./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i -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 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 13:46:12,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 13:46:12,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 13:46:12,795 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 13:46:12,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 13:46:12,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 13:46:12,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 13:46:12,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 13:46:12,805 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 13:46:12,811 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 13:46:12,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 13:46:12,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 13:46:12,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 13:46:12,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 13:46:12,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 13:46:12,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 13:46:12,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 13:46:12,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 13:46:12,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 13:46:12,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 13:46:12,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 13:46:12,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 13:46:12,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 13:46:12,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 13:46:12,844 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 13:46:12,844 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 13:46:12,844 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 13:46:12,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 13:46:12,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 13:46:12,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 13:46:12,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 13:46:12,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 13:46:12,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 13:46:12,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 13:46:12,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 13:46:12,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 13:46:12,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 13:46:12,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 13:46:12,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 13:46:12,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 13:46:12,857 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 13:46:12,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 13:46:12,891 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 13:46:12,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 13:46:12,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 13:46:12,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 13:46:12,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 13:46:12,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 13:46:12,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 13:46:12,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 13:46:12,894 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 13:46:12,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 13:46:12,895 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 13:46:12,896 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 13:46:12,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 13:46:12,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 13:46:12,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 13:46:12,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 13:46:12,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 13:46:12,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 13:46:12,897 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 13:46:12,897 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 13:46:12,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 13:46:12,897 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 13:46:12,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 13:46:12,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 13:46:12,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 13:46:12,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 13:46:12,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:46:12,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 13:46:12,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 13:46:12,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 13:46:12,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 13:46:12,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 13:46:12,900 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 13:46:12,900 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 13:46:12,900 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 13:46:12,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 13:46:12,901 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 13:46:12,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bf2f5f336333cdf96c271b32cdeb9b70ee932e1c07acf27a63b4425ec902f3e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 13:46:13,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 13:46:13,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 13:46:13,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 13:46:13,226 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 13:46:13,227 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 13:46:13,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-30 13:46:14,452 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 13:46:14,803 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 13:46:14,804 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_36-trylock_nr.i [2023-08-30 13:46:14,839 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e62c4c08/07a98e0add6b4350a8ea691c46c67a1a/FLAG2cc23bbc3 [2023-08-30 13:46:14,860 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e62c4c08/07a98e0add6b4350a8ea691c46c67a1a [2023-08-30 13:46:14,864 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 13:46:14,865 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 13:46:14,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 13:46:14,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 13:46:14,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 13:46:14,869 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:46:14" (1/1) ... [2023-08-30 13:46:14,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ec284e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:14, skipping insertion in model container [2023-08-30 13:46:14,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:46:14" (1/1) ... [2023-08-30 13:46:14,876 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 13:46:14,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 13:46:15,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:46:15,525 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 13:46:15,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 13:46:15,718 WARN L667 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:46:15,719 WARN L667 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:46:15,719 WARN L667 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:46:15,719 WARN L667 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 13:46:15,725 INFO L208 MainTranslator]: Completed translation [2023-08-30 13:46:15,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15 WrapperNode [2023-08-30 13:46:15,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 13:46:15,727 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 13:46:15,727 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 13:46:15,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 13:46:15,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,821 INFO L138 Inliner]: procedures = 524, calls = 69, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 133 [2023-08-30 13:46:15,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 13:46:15,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 13:46:15,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 13:46:15,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 13:46:15,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,858 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,884 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 13:46:15,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 13:46:15,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 13:46:15,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 13:46:15,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (1/1) ... [2023-08-30 13:46:15,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 13:46:15,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:15,943 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 13:46:15,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 13:46:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure counter_thread [2023-08-30 13:46:15,975 INFO L138 BoogieDeclarations]: Found implementation of procedure counter_thread [2023-08-30 13:46:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-30 13:46:15,975 INFO L130 BoogieDeclarations]: Found specification of procedure monitor_thread [2023-08-30 13:46:15,976 INFO L138 BoogieDeclarations]: Found implementation of procedure monitor_thread [2023-08-30 13:46:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-08-30 13:46:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 13:46:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 13:46:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 13:46:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 13:46:15,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 13:46:15,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 13:46:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2023-08-30 13:46:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 13:46:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-30 13:46:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-08-30 13:46:15,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 13:46:15,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 13:46:15,981 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 13:46:16,295 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 13:46:16,297 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 13:46:16,536 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 13:46:16,544 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 13:46:16,552 INFO L302 CfgBuilder]: Removed 19 assume(true) statements. [2023-08-30 13:46:16,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:46:16 BoogieIcfgContainer [2023-08-30 13:46:16,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 13:46:16,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 13:46:16,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 13:46:16,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 13:46:16,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:46:14" (1/3) ... [2023-08-30 13:46:16,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3f1c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:46:16, skipping insertion in model container [2023-08-30 13:46:16,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:46:15" (2/3) ... [2023-08-30 13:46:16,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c3f1c0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:46:16, skipping insertion in model container [2023-08-30 13:46:16,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:46:16" (3/3) ... [2023-08-30 13:46:16,563 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_36-trylock_nr.i [2023-08-30 13:46:16,571 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 13:46:16,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 13:46:16,579 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 13:46:16,579 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 13:46:16,685 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 13:46:16,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 250 transitions, 516 flow [2023-08-30 13:46:16,825 INFO L130 PetriNetUnfolder]: 32/248 cut-off events. [2023-08-30 13:46:16,825 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 13:46:16,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 248 events. 32/248 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 559 event pairs, 0 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-08-30 13:46:16,833 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 250 transitions, 516 flow [2023-08-30 13:46:16,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 221 transitions, 451 flow [2023-08-30 13:46:16,846 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 13:46:16,863 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 221 transitions, 451 flow [2023-08-30 13:46:16,865 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 221 transitions, 451 flow [2023-08-30 13:46:16,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 221 transitions, 451 flow [2023-08-30 13:46:16,908 INFO L130 PetriNetUnfolder]: 28/221 cut-off events. [2023-08-30 13:46:16,908 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 13:46:16,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 221 events. 28/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 500 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 150. Up to 5 conditions per place. [2023-08-30 13:46:16,920 INFO L119 LiptonReduction]: Number of co-enabled transitions 13862 [2023-08-30 13:46:27,707 INFO L134 LiptonReduction]: Checked pairs total: 14838 [2023-08-30 13:46:27,707 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-08-30 13:46:27,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 13:46:27,724 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;@53c4704c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 13:46:27,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-30 13:46:27,726 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 13:46:27,726 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 13:46:27,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:27,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 13:46:27,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:27,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1025, now seen corresponding path program 1 times [2023-08-30 13:46:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124563480] [2023-08-30 13:46:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:27,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:28,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:28,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:28,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124563480] [2023-08-30 13:46:28,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124563480] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:46:28,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:46:28,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 13:46:28,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954432333] [2023-08-30 13:46:28,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:46:28,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 13:46:28,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:28,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 13:46:28,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 13:46:28,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 497 [2023-08-30 13:46:28,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 50 transitions, 109 flow. Second operand has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:28,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 497 [2023-08-30 13:46:28,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:28,240 INFO L130 PetriNetUnfolder]: 328/595 cut-off events. [2023-08-30 13:46:28,240 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-30 13:46:28,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 595 events. 328/595 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 2837 event pairs, 234 based on Foata normal form. 79/340 useless extension candidates. Maximal degree in co-relation 1056. Up to 512 conditions per place. [2023-08-30 13:46:28,246 INFO L137 encePairwiseOnDemand]: 484/497 looper letters, 25 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2023-08-30 13:46:28,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 117 flow [2023-08-30 13:46:28,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 13:46:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 13:46:28,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 476 transitions. [2023-08-30 13:46:28,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4788732394366197 [2023-08-30 13:46:28,265 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 476 transitions. [2023-08-30 13:46:28,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 476 transitions. [2023-08-30 13:46:28,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:28,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 476 transitions. [2023-08-30 13:46:28,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 238.0) internal successors, (476), 2 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,279 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 497.0) internal successors, (1491), 3 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,281 INFO L175 Difference]: Start difference. First operand has 39 places, 50 transitions, 109 flow. Second operand 2 states and 476 transitions. [2023-08-30 13:46:28,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 117 flow [2023-08-30 13:46:28,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 13:46:28,284 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 62 flow [2023-08-30 13:46:28,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2023-08-30 13:46:28,289 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 13:46:28,289 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 62 flow [2023-08-30 13:46:28,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:28,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 13:46:28,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 13:46:28,291 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:28,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:28,291 INFO L85 PathProgramCache]: Analyzing trace with hash 968796351, now seen corresponding path program 1 times [2023-08-30 13:46:28,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:28,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278153279] [2023-08-30 13:46:28,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:28,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:28,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:28,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278153279] [2023-08-30 13:46:28,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278153279] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:46:28,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:46:28,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 13:46:28,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552497137] [2023-08-30 13:46:28,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:46:28,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:46:28,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:28,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:46:28,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:46:28,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:28,552 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:28,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:28,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:28,693 INFO L130 PetriNetUnfolder]: 585/918 cut-off events. [2023-08-30 13:46:28,693 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 13:46:28,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1836 conditions, 918 events. 585/918 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3882 event pairs, 157 based on Foata normal form. 28/446 useless extension candidates. Maximal degree in co-relation 1833. Up to 603 conditions per place. [2023-08-30 13:46:28,698 INFO L137 encePairwiseOnDemand]: 490/497 looper letters, 44 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-30 13:46:28,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 199 flow [2023-08-30 13:46:28,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:46:28,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:46:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 696 transitions. [2023-08-30 13:46:28,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46680080482897385 [2023-08-30 13:46:28,701 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 696 transitions. [2023-08-30 13:46:28,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 696 transitions. [2023-08-30 13:46:28,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:28,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 696 transitions. [2023-08-30 13:46:28,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,711 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 62 flow. Second operand 3 states and 696 transitions. [2023-08-30 13:46:28,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 199 flow [2023-08-30 13:46:28,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 199 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:46:28,713 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 87 flow [2023-08-30 13:46:28,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-08-30 13:46:28,714 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -6 predicate places. [2023-08-30 13:46:28,715 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 87 flow [2023-08-30 13:46:28,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 216.66666666666666) internal successors, (650), 3 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:28,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:46:28,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 13:46:28,716 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting counter_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:28,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash -32081301, now seen corresponding path program 1 times [2023-08-30 13:46:28,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:28,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928692598] [2023-08-30 13:46:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:28,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:28,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928692598] [2023-08-30 13:46:28,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928692598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:46:28,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:46:28,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:46:28,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425469484] [2023-08-30 13:46:28,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:46:28,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:46:28,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:28,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:46:28,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:46:28,802 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:28,803 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,803 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:28,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:28,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:28,937 INFO L130 PetriNetUnfolder]: 566/909 cut-off events. [2023-08-30 13:46:28,937 INFO L131 PetriNetUnfolder]: For 11/20 co-relation queries the response was YES. [2023-08-30 13:46:28,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 909 events. 566/909 cut-off events. For 11/20 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4121 event pairs, 106 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 1962. Up to 670 conditions per place. [2023-08-30 13:46:28,942 INFO L137 encePairwiseOnDemand]: 495/497 looper letters, 41 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-30 13:46:28,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 199 flow [2023-08-30 13:46:28,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:46:28,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:46:28,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 687 transitions. [2023-08-30 13:46:28,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2023-08-30 13:46:28,945 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 687 transitions. [2023-08-30 13:46:28,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 687 transitions. [2023-08-30 13:46:28,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:28,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 687 transitions. [2023-08-30 13:46:28,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,950 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,951 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 87 flow. Second operand 3 states and 687 transitions. [2023-08-30 13:46:28,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 199 flow [2023-08-30 13:46:28,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:46:28,952 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 83 flow [2023-08-30 13:46:28,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-08-30 13:46:28,953 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 13:46:28,954 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 83 flow [2023-08-30 13:46:28,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:28,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:28,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:46:28,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 13:46:28,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:28,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:28,955 INFO L85 PathProgramCache]: Analyzing trace with hash -29932719, now seen corresponding path program 1 times [2023-08-30 13:46:28,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:28,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074226764] [2023-08-30 13:46:28,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:28,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:29,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:29,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074226764] [2023-08-30 13:46:29,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074226764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:46:29,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 13:46:29,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 13:46:29,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197237545] [2023-08-30 13:46:29,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:46:29,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 13:46:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:29,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 13:46:29,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 13:46:29,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 13:46:29,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:29,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 13:46:29,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:29,219 INFO L130 PetriNetUnfolder]: 891/1562 cut-off events. [2023-08-30 13:46:29,220 INFO L131 PetriNetUnfolder]: For 185/185 co-relation queries the response was YES. [2023-08-30 13:46:29,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3333 conditions, 1562 events. 891/1562 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 8839 event pairs, 410 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 3328. Up to 874 conditions per place. [2023-08-30 13:46:29,227 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 42 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-30 13:46:29,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 48 transitions, 221 flow [2023-08-30 13:46:29,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 13:46:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 13:46:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 693 transitions. [2023-08-30 13:46:29,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4647887323943662 [2023-08-30 13:46:29,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 693 transitions. [2023-08-30 13:46:29,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 693 transitions. [2023-08-30 13:46:29,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:29,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 693 transitions. [2023-08-30 13:46:29,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 231.0) internal successors, (693), 3 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 497.0) internal successors, (1988), 4 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,236 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 83 flow. Second operand 3 states and 693 transitions. [2023-08-30 13:46:29,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 48 transitions, 221 flow [2023-08-30 13:46:29,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 13:46:29,238 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 97 flow [2023-08-30 13:46:29,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-30 13:46:29,239 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-30 13:46:29,239 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 97 flow [2023-08-30 13:46:29,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.0) internal successors, (657), 3 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:29,240 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:46:29,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 13:46:29,240 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:29,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:29,241 INFO L85 PathProgramCache]: Analyzing trace with hash -32081364, now seen corresponding path program 1 times [2023-08-30 13:46:29,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:29,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064141329] [2023-08-30 13:46:29,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:29,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:29,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:29,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:29,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064141329] [2023-08-30 13:46:29,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064141329] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:29,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685685510] [2023-08-30 13:46:29,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:29,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:29,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:29,329 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:29,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 13:46:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:29,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:46:29,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:29,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:29,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:29,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685685510] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:29,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:29,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 13:46:29,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556867510] [2023-08-30 13:46:29,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:29,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:46:29,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:29,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:46:29,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:46:29,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:29,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 217.42857142857142) internal successors, (1522), 7 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:29,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:29,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:29,965 INFO L130 PetriNetUnfolder]: 1999/3086 cut-off events. [2023-08-30 13:46:29,965 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2023-08-30 13:46:29,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7441 conditions, 3086 events. 1999/3086 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 15329 event pairs, 357 based on Foata normal form. 78/2208 useless extension candidates. Maximal degree in co-relation 7434. Up to 698 conditions per place. [2023-08-30 13:46:29,981 INFO L137 encePairwiseOnDemand]: 491/497 looper letters, 122 selfloop transitions, 14 changer transitions 0/138 dead transitions. [2023-08-30 13:46:29,982 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 138 transitions, 692 flow [2023-08-30 13:46:29,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 13:46:29,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 13:46:29,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1642 transitions. [2023-08-30 13:46:29,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4719747053751078 [2023-08-30 13:46:29,986 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1642 transitions. [2023-08-30 13:46:29,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1642 transitions. [2023-08-30 13:46:29,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:29,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1642 transitions. [2023-08-30 13:46:29,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 234.57142857142858) internal successors, (1642), 7 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:29,998 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 97 flow. Second operand 7 states and 1642 transitions. [2023-08-30 13:46:29,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 138 transitions, 692 flow [2023-08-30 13:46:30,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 138 transitions, 680 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 13:46:30,002 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 215 flow [2023-08-30 13:46:30,002 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=215, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-30 13:46:30,002 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 7 predicate places. [2023-08-30 13:46:30,003 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 215 flow [2023-08-30 13:46:30,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 217.42857142857142) internal successors, (1522), 7 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:30,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:30,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 13:46:30,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 13:46:30,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:30,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting counter_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:30,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:30,210 INFO L85 PathProgramCache]: Analyzing trace with hash -32081365, now seen corresponding path program 1 times [2023-08-30 13:46:30,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:30,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824190624] [2023-08-30 13:46:30,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:30,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:30,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:30,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:30,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824190624] [2023-08-30 13:46:30,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824190624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:30,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204698996] [2023-08-30 13:46:30,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:30,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:30,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:30,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:30,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 13:46:30,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:30,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:46:30,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:30,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:46:30,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204698996] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:46:30,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:46:30,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 13:46:30,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663292532] [2023-08-30 13:46:30,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:46:30,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:46:30,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:30,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:46:30,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:46:30,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:30,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 215 flow. Second operand has 4 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:30,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:30,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:30,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:30,694 INFO L130 PetriNetUnfolder]: 1603/2520 cut-off events. [2023-08-30 13:46:30,695 INFO L131 PetriNetUnfolder]: For 1349/1361 co-relation queries the response was YES. [2023-08-30 13:46:30,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6453 conditions, 2520 events. 1603/2520 cut-off events. For 1349/1361 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 12541 event pairs, 357 based on Foata normal form. 256/2110 useless extension candidates. Maximal degree in co-relation 6442. Up to 1750 conditions per place. [2023-08-30 13:46:30,708 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 47 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-30 13:46:30,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 51 transitions, 284 flow [2023-08-30 13:46:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:46:30,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:46:30,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 905 transitions. [2023-08-30 13:46:30,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552313883299799 [2023-08-30 13:46:30,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 905 transitions. [2023-08-30 13:46:30,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 905 transitions. [2023-08-30 13:46:30,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:30,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 905 transitions. [2023-08-30 13:46:30,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 226.25) internal successors, (905), 4 states have internal predecessors, (905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:30,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:30,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:30,717 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 215 flow. Second operand 4 states and 905 transitions. [2023-08-30 13:46:30,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 51 transitions, 284 flow [2023-08-30 13:46:30,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 51 transitions, 272 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 13:46:30,724 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 125 flow [2023-08-30 13:46:30,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-30 13:46:30,725 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 5 predicate places. [2023-08-30 13:46:30,725 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 125 flow [2023-08-30 13:46:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:30,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:30,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:46:30,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 13:46:30,932 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,SelfDestructingSolverStorable5 [2023-08-30 13:46:30,932 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:30,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:30,933 INFO L85 PathProgramCache]: Analyzing trace with hash -927912851, now seen corresponding path program 1 times [2023-08-30 13:46:30,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:30,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760742877] [2023-08-30 13:46:30,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:30,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:31,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760742877] [2023-08-30 13:46:31,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760742877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:31,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244220685] [2023-08-30 13:46:31,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:31,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:31,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:31,047 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:31,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 13:46:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:31,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:46:31,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:31,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:31,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:31,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244220685] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:31,191 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:31,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-30 13:46:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026512804] [2023-08-30 13:46:31,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:31,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 13:46:31,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 13:46:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 13:46:31,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 13:46:31,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 125 flow. Second operand has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:31,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:31,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 13:46:31,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:31,822 INFO L130 PetriNetUnfolder]: 3461/5866 cut-off events. [2023-08-30 13:46:31,822 INFO L131 PetriNetUnfolder]: For 2829/2829 co-relation queries the response was YES. [2023-08-30 13:46:31,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13737 conditions, 5866 events. 3461/5866 cut-off events. For 2829/2829 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 38485 event pairs, 613 based on Foata normal form. 0/4375 useless extension candidates. Maximal degree in co-relation 13726. Up to 1353 conditions per place. [2023-08-30 13:46:31,853 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 117 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2023-08-30 13:46:31,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 129 transitions, 758 flow [2023-08-30 13:46:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 13:46:31,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 13:46:31,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1618 transitions. [2023-08-30 13:46:31,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46507617131359585 [2023-08-30 13:46:31,858 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1618 transitions. [2023-08-30 13:46:31,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1618 transitions. [2023-08-30 13:46:31,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:31,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1618 transitions. [2023-08-30 13:46:31,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 231.14285714285714) internal successors, (1618), 7 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:31,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:31,869 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 497.0) internal successors, (3976), 8 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:31,870 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 125 flow. Second operand 7 states and 1618 transitions. [2023-08-30 13:46:31,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 129 transitions, 758 flow [2023-08-30 13:46:31,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:46:31,875 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 181 flow [2023-08-30 13:46:31,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=181, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-08-30 13:46:31,876 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-30 13:46:31,876 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 181 flow [2023-08-30 13:46:31,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 218.71428571428572) internal successors, (1531), 7 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:31,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:31,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 13:46:31,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 13:46:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:32,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:32,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash -927912853, now seen corresponding path program 1 times [2023-08-30 13:46:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:32,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272191686] [2023-08-30 13:46:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:32,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:32,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:32,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:32,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272191686] [2023-08-30 13:46:32,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272191686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:32,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536051565] [2023-08-30 13:46:32,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:32,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:32,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:32,190 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:32,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 13:46:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:32,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 13:46:32,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:32,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 13:46:32,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536051565] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 13:46:32,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 13:46:32,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 13:46:32,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935161639] [2023-08-30 13:46:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 13:46:32,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 13:46:32,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 13:46:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 13:46:32,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 13:46:32,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:32,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:32,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 13:46:32,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:32,883 INFO L130 PetriNetUnfolder]: 3132/5468 cut-off events. [2023-08-30 13:46:32,883 INFO L131 PetriNetUnfolder]: For 2736/2736 co-relation queries the response was YES. [2023-08-30 13:46:32,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13429 conditions, 5468 events. 3132/5468 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 36950 event pairs, 90 based on Foata normal form. 138/4479 useless extension candidates. Maximal degree in co-relation 13415. Up to 3616 conditions per place. [2023-08-30 13:46:32,914 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 63 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-30 13:46:32,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 68 transitions, 420 flow [2023-08-30 13:46:32,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 13:46:32,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 13:46:32,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 916 transitions. [2023-08-30 13:46:32,917 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4607645875251509 [2023-08-30 13:46:32,917 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 916 transitions. [2023-08-30 13:46:32,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 916 transitions. [2023-08-30 13:46:32,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:32,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 916 transitions. [2023-08-30 13:46:32,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:32,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:32,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 497.0) internal successors, (2485), 5 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:32,923 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 181 flow. Second operand 4 states and 916 transitions. [2023-08-30 13:46:32,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 68 transitions, 420 flow [2023-08-30 13:46:32,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 68 transitions, 412 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 13:46:32,933 INFO L231 Difference]: Finished difference. Result has 51 places, 34 transitions, 150 flow [2023-08-30 13:46:32,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=34} [2023-08-30 13:46:32,935 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 12 predicate places. [2023-08-30 13:46:32,936 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 34 transitions, 150 flow [2023-08-30 13:46:32,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:32,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:32,936 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-30 13:46:32,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 13:46:33,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:33,142 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:33,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2044599295, now seen corresponding path program 2 times [2023-08-30 13:46:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:33,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515807041] [2023-08-30 13:46:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:33,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:33,256 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:33,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:33,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515807041] [2023-08-30 13:46:33,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515807041] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:33,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1378738790] [2023-08-30 13:46:33,257 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:46:33,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:33,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:33,258 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:33,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 13:46:33,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:46:33,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:46:33,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 13:46:33,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:33,405 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:33,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:33,469 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:33,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1378738790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:33,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:33,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 13:46:33,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797425954] [2023-08-30 13:46:33,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:33,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 13:46:33,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:33,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 13:46:33,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 13:46:33,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:33,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 34 transitions, 150 flow. Second operand has 13 states, 13 states have (on average 216.76923076923077) internal successors, (2818), 13 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:33,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:33,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:33,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:34,447 INFO L130 PetriNetUnfolder]: 6269/9613 cut-off events. [2023-08-30 13:46:34,448 INFO L131 PetriNetUnfolder]: For 9326/9356 co-relation queries the response was YES. [2023-08-30 13:46:34,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24565 conditions, 9613 events. 6269/9613 cut-off events. For 9326/9356 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 53907 event pairs, 731 based on Foata normal form. 774/8143 useless extension candidates. Maximal degree in co-relation 24550. Up to 1617 conditions per place. [2023-08-30 13:46:34,500 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 237 selfloop transitions, 11 changer transitions 0/250 dead transitions. [2023-08-30 13:46:34,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 250 transitions, 1492 flow [2023-08-30 13:46:34,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:46:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:46:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2795 transitions. [2023-08-30 13:46:34,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686452045606975 [2023-08-30 13:46:34,507 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2795 transitions. [2023-08-30 13:46:34,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2795 transitions. [2023-08-30 13:46:34,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:34,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2795 transitions. [2023-08-30 13:46:34,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 232.91666666666666) internal successors, (2795), 12 states have internal predecessors, (2795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:34,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:34,523 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:34,523 INFO L175 Difference]: Start difference. First operand has 51 places, 34 transitions, 150 flow. Second operand 12 states and 2795 transitions. [2023-08-30 13:46:34,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 250 transitions, 1492 flow [2023-08-30 13:46:34,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 250 transitions, 1459 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 13:46:34,534 INFO L231 Difference]: Finished difference. Result has 66 places, 40 transitions, 243 flow [2023-08-30 13:46:34,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=243, PETRI_PLACES=66, PETRI_TRANSITIONS=40} [2023-08-30 13:46:34,535 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 27 predicate places. [2023-08-30 13:46:34,535 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 40 transitions, 243 flow [2023-08-30 13:46:34,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 216.76923076923077) internal successors, (2818), 13 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:34,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:34,536 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-08-30 13:46:34,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 13:46:34,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:34,742 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:34,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:34,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1040860717, now seen corresponding path program 2 times [2023-08-30 13:46:34,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310855082] [2023-08-30 13:46:34,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:34,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:34,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:34,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310855082] [2023-08-30 13:46:34,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310855082] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:34,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382189600] [2023-08-30 13:46:34,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 13:46:34,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:34,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:34,894 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:34,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 13:46:35,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 13:46:35,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:46:35,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 13:46:35,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:35,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:35,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:35,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382189600] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:35,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:35,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-30 13:46:35,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934847275] [2023-08-30 13:46:35,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:35,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 13:46:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:35,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 13:46:35,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 13:46:35,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 13:46:35,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 40 transitions, 243 flow. Second operand has 13 states, 13 states have (on average 218.3846153846154) internal successors, (2839), 13 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:35,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:35,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 13:46:35,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:37,096 INFO L130 PetriNetUnfolder]: 12828/22274 cut-off events. [2023-08-30 13:46:37,097 INFO L131 PetriNetUnfolder]: For 32740/32740 co-relation queries the response was YES. [2023-08-30 13:46:37,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56154 conditions, 22274 events. 12828/22274 cut-off events. For 32740/32740 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 172441 event pairs, 1213 based on Foata normal form. 810/18375 useless extension candidates. Maximal degree in co-relation 56133. Up to 3276 conditions per place. [2023-08-30 13:46:37,251 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 282 selfloop transitions, 11 changer transitions 0/296 dead transitions. [2023-08-30 13:46:37,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 296 transitions, 2405 flow [2023-08-30 13:46:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 13:46:37,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 13:46:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2782 transitions. [2023-08-30 13:46:37,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664654594232059 [2023-08-30 13:46:37,258 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2782 transitions. [2023-08-30 13:46:37,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2782 transitions. [2023-08-30 13:46:37,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:37,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2782 transitions. [2023-08-30 13:46:37,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 231.83333333333334) internal successors, (2782), 12 states have internal predecessors, (2782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:37,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:37,272 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 497.0) internal successors, (6461), 13 states have internal predecessors, (6461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:37,273 INFO L175 Difference]: Start difference. First operand has 66 places, 40 transitions, 243 flow. Second operand 12 states and 2782 transitions. [2023-08-30 13:46:37,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 296 transitions, 2405 flow [2023-08-30 13:46:37,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 296 transitions, 2029 flow, removed 143 selfloop flow, removed 5 redundant places. [2023-08-30 13:46:37,308 INFO L231 Difference]: Finished difference. Result has 78 places, 46 transitions, 291 flow [2023-08-30 13:46:37,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=291, PETRI_PLACES=78, PETRI_TRANSITIONS=46} [2023-08-30 13:46:37,309 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 39 predicate places. [2023-08-30 13:46:37,309 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 46 transitions, 291 flow [2023-08-30 13:46:37,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 218.3846153846154) internal successors, (2839), 13 states have internal predecessors, (2839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:37,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:37,310 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2023-08-30 13:46:37,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 13:46:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:37,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:37,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1915454241, now seen corresponding path program 3 times [2023-08-30 13:46:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581622611] [2023-08-30 13:46:37,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:37,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:37,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581622611] [2023-08-30 13:46:37,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581622611] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336913679] [2023-08-30 13:46:37,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:46:37,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:37,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:37,748 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:37,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 13:46:37,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 13:46:37,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:46:37,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 13:46:37,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:38,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:38,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336913679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:38,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:38,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-30 13:46:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133202857] [2023-08-30 13:46:38,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:38,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 13:46:38,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 13:46:38,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 13:46:38,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:38,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 46 transitions, 291 flow. Second operand has 25 states, 25 states have (on average 216.4) internal successors, (5410), 25 states have internal predecessors, (5410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:38,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:38,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:38,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:42,188 INFO L130 PetriNetUnfolder]: 25673/38785 cut-off events. [2023-08-30 13:46:42,188 INFO L131 PetriNetUnfolder]: For 187396/187462 co-relation queries the response was YES. [2023-08-30 13:46:42,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104704 conditions, 38785 events. 25673/38785 cut-off events. For 187396/187462 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 241376 event pairs, 1541 based on Foata normal form. 3210/32605 useless extension candidates. Maximal degree in co-relation 104677. Up to 6693 conditions per place. [2023-08-30 13:46:42,476 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 627 selfloop transitions, 23 changer transitions 0/652 dead transitions. [2023-08-30 13:46:42,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 652 transitions, 5227 flow [2023-08-30 13:46:42,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 13:46:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 13:46:42,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5603 transitions. [2023-08-30 13:46:42,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46973507712944335 [2023-08-30 13:46:42,489 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5603 transitions. [2023-08-30 13:46:42,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5603 transitions. [2023-08-30 13:46:42,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:42,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5603 transitions. [2023-08-30 13:46:42,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 233.45833333333334) internal successors, (5603), 24 states have internal predecessors, (5603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:42,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:42,519 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:42,519 INFO L175 Difference]: Start difference. First operand has 78 places, 46 transitions, 291 flow. Second operand 24 states and 5603 transitions. [2023-08-30 13:46:42,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 652 transitions, 5227 flow [2023-08-30 13:46:42,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 652 transitions, 4399 flow, removed 299 selfloop flow, removed 5 redundant places. [2023-08-30 13:46:42,593 INFO L231 Difference]: Finished difference. Result has 108 places, 58 transitions, 447 flow [2023-08-30 13:46:42,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=255, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=447, PETRI_PLACES=108, PETRI_TRANSITIONS=58} [2023-08-30 13:46:42,593 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 69 predicate places. [2023-08-30 13:46:42,593 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 58 transitions, 447 flow [2023-08-30 13:46:42,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 216.4) internal successors, (5410), 25 states have internal predecessors, (5410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:42,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:42,595 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-08-30 13:46:42,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 13:46:42,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:42,801 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:42,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:42,802 INFO L85 PathProgramCache]: Analyzing trace with hash 723178387, now seen corresponding path program 3 times [2023-08-30 13:46:42,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:42,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813573446] [2023-08-30 13:46:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:42,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813573446] [2023-08-30 13:46:43,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813573446] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:43,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025982473] [2023-08-30 13:46:43,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 13:46:43,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:43,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:43,030 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:43,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 13:46:43,180 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 13:46:43,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:46:43,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 13:46:43,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:43,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:43,427 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:43,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025982473] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:43,427 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:43,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-08-30 13:46:43,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855192779] [2023-08-30 13:46:43,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:43,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 13:46:43,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:43,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 13:46:43,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-30 13:46:43,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 13:46:43,461 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 58 transitions, 447 flow. Second operand has 25 states, 25 states have (on average 218.2) internal successors, (5455), 25 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:43,461 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:43,461 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 13:46:43,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:46:52,045 INFO L130 PetriNetUnfolder]: 51876/89798 cut-off events. [2023-08-30 13:46:52,045 INFO L131 PetriNetUnfolder]: For 337063/337063 co-relation queries the response was YES. [2023-08-30 13:46:52,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 228240 conditions, 89798 events. 51876/89798 cut-off events. For 337063/337063 co-relation queries the response was YES. Maximal size of possible extension queue 1499. Compared 773745 event pairs, 2413 based on Foata normal form. 3204/73785 useless extension candidates. Maximal degree in co-relation 228201. Up to 13464 conditions per place. [2023-08-30 13:46:52,894 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 858 selfloop transitions, 23 changer transitions 0/884 dead transitions. [2023-08-30 13:46:52,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 884 transitions, 8573 flow [2023-08-30 13:46:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 13:46:52,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 13:46:52,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5572 transitions. [2023-08-30 13:46:52,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4671361502347418 [2023-08-30 13:46:52,907 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5572 transitions. [2023-08-30 13:46:52,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5572 transitions. [2023-08-30 13:46:52,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:46:52,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5572 transitions. [2023-08-30 13:46:52,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 232.16666666666666) internal successors, (5572), 24 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:52,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:52,936 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 497.0) internal successors, (12425), 25 states have internal predecessors, (12425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:52,936 INFO L175 Difference]: Start difference. First operand has 108 places, 58 transitions, 447 flow. Second operand 24 states and 5572 transitions. [2023-08-30 13:46:52,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 884 transitions, 8573 flow [2023-08-30 13:46:53,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 884 transitions, 6961 flow, removed 575 selfloop flow, removed 11 redundant places. [2023-08-30 13:46:53,391 INFO L231 Difference]: Finished difference. Result has 132 places, 70 transitions, 543 flow [2023-08-30 13:46:53,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=543, PETRI_PLACES=132, PETRI_TRANSITIONS=70} [2023-08-30 13:46:53,393 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2023-08-30 13:46:53,393 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 70 transitions, 543 flow [2023-08-30 13:46:53,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 218.2) internal successors, (5455), 25 states have internal predecessors, (5455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:53,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:46:53,394 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1] [2023-08-30 13:46:53,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-30 13:46:53,600 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,SelfDestructingSolverStorable11 [2023-08-30 13:46:53,600 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:46:53,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:46:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1727871329, now seen corresponding path program 4 times [2023-08-30 13:46:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:46:53,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265020416] [2023-08-30 13:46:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:46:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:46:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:46:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:54,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:46:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265020416] [2023-08-30 13:46:54,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265020416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:46:54,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459552325] [2023-08-30 13:46:54,193 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:46:54,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:46:54,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:46:54,195 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:46:54,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 13:46:54,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:46:54,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:46:54,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 13:46:54,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:46:54,380 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:54,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:46:54,994 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:46:54,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459552325] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:46:54,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:46:54,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 47 [2023-08-30 13:46:54,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291159639] [2023-08-30 13:46:54,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:46:54,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 13:46:54,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:46:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 13:46:54,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 13:46:55,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:46:55,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 70 transitions, 543 flow. Second operand has 49 states, 49 states have (on average 216.20408163265307) internal successors, (10594), 49 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:46:55,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:46:55,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:46:55,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:47:13,563 INFO L130 PetriNetUnfolder]: 103793/155449 cut-off events. [2023-08-30 13:47:13,563 INFO L131 PetriNetUnfolder]: For 3300832/3300970 co-relation queries the response was YES. [2023-08-30 13:47:15,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422662 conditions, 155449 events. 103793/155449 cut-off events. For 3300832/3300970 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 1060582 event pairs, 3161 based on Foata normal form. 13050/130129 useless extension candidates. Maximal degree in co-relation 422611. Up to 27213 conditions per place. [2023-08-30 13:47:15,461 INFO L137 encePairwiseOnDemand]: 493/497 looper letters, 1839 selfloop transitions, 47 changer transitions 0/1888 dead transitions. [2023-08-30 13:47:15,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1888 transitions, 17983 flow [2023-08-30 13:47:15,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 13:47:15,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 13:47:15,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11219 transitions. [2023-08-30 13:47:15,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47028001341381626 [2023-08-30 13:47:15,472 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11219 transitions. [2023-08-30 13:47:15,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11219 transitions. [2023-08-30 13:47:15,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:47:15,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11219 transitions. [2023-08-30 13:47:15,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 233.72916666666666) internal successors, (11219), 48 states have internal predecessors, (11219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:47:15,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:47:15,513 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:47:15,513 INFO L175 Difference]: Start difference. First operand has 132 places, 70 transitions, 543 flow. Second operand 48 states and 11219 transitions. [2023-08-30 13:47:15,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1888 transitions, 17983 flow [2023-08-30 13:47:16,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 1888 transitions, 14599 flow, removed 1175 selfloop flow, removed 11 redundant places. [2023-08-30 13:47:16,117 INFO L231 Difference]: Finished difference. Result has 192 places, 94 transitions, 855 flow [2023-08-30 13:47:16,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=855, PETRI_PLACES=192, PETRI_TRANSITIONS=94} [2023-08-30 13:47:16,117 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 153 predicate places. [2023-08-30 13:47:16,117 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 94 transitions, 855 flow [2023-08-30 13:47:16,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 216.20408163265307) internal successors, (10594), 49 states have internal predecessors, (10594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:47:16,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:47:16,119 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2023-08-30 13:47:16,124 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-30 13:47:16,320 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,SelfDestructingSolverStorable12 [2023-08-30 13:47:16,321 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:47:16,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:47:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 344069907, now seen corresponding path program 4 times [2023-08-30 13:47:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:47:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920449777] [2023-08-30 13:47:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:47:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:47:16,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:47:16,845 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:47:16,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:47:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920449777] [2023-08-30 13:47:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920449777] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:47:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8753882] [2023-08-30 13:47:16,846 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 13:47:16,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:47:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:47:16,847 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:47:16,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 13:47:17,147 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 13:47:17,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:47:17,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 13:47:17,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:47:17,194 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:47:17,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:47:17,760 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:47:17,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8753882] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:47:17,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:47:17,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-08-30 13:47:17,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660905747] [2023-08-30 13:47:17,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:47:17,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-08-30 13:47:17,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:47:17,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-08-30 13:47:17,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-08-30 13:47:17,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 497 [2023-08-30 13:47:17,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 94 transitions, 855 flow. Second operand has 49 states, 49 states have (on average 218.10204081632654) internal successors, (10687), 49 states have internal predecessors, (10687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:47:17,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:47:17,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 497 [2023-08-30 13:47:17,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 13:48:10,474 INFO L130 PetriNetUnfolder]: 208596/360494 cut-off events. [2023-08-30 13:48:10,474 INFO L131 PetriNetUnfolder]: For 4360885/4360885 co-relation queries the response was YES. [2023-08-30 13:48:17,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 920172 conditions, 360494 events. 208596/360494 cut-off events. For 4360885/4360885 co-relation queries the response was YES. Maximal size of possible extension queue 3083. Compared 3407078 event pairs, 4813 based on Foata normal form. 12744/295629 useless extension candidates. Maximal degree in co-relation 920097. Up to 54576 conditions per place. [2023-08-30 13:48:19,267 INFO L137 encePairwiseOnDemand]: 494/497 looper letters, 2874 selfloop transitions, 47 changer transitions 0/2924 dead transitions. [2023-08-30 13:48:19,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 2924 transitions, 32141 flow [2023-08-30 13:48:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-30 13:48:19,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-30 13:48:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11152 transitions. [2023-08-30 13:48:19,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674714956405097 [2023-08-30 13:48:19,308 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11152 transitions. [2023-08-30 13:48:19,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11152 transitions. [2023-08-30 13:48:19,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 13:48:19,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11152 transitions. [2023-08-30 13:48:19,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 232.33333333333334) internal successors, (11152), 48 states have internal predecessors, (11152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:19,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:19,367 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 497.0) internal successors, (24353), 49 states have internal predecessors, (24353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:19,367 INFO L175 Difference]: Start difference. First operand has 192 places, 94 transitions, 855 flow. Second operand 48 states and 11152 transitions. [2023-08-30 13:48:19,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 2924 transitions, 32141 flow [2023-08-30 13:48:22,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 2924 transitions, 25465 flow, removed 2303 selfloop flow, removed 23 redundant places. [2023-08-30 13:48:22,448 INFO L231 Difference]: Finished difference. Result has 240 places, 118 transitions, 1047 flow [2023-08-30 13:48:22,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=497, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=1047, PETRI_PLACES=240, PETRI_TRANSITIONS=118} [2023-08-30 13:48:22,451 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 201 predicate places. [2023-08-30 13:48:22,451 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 118 transitions, 1047 flow [2023-08-30 13:48:22,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 218.10204081632654) internal successors, (10687), 49 states have internal predecessors, (10687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:22,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 13:48:22,453 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 1, 1, 1, 1, 1] [2023-08-30 13:48:22,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-30 13:48:22,659 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,SelfDestructingSolverStorable13 [2023-08-30 13:48:22,660 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting counter_threadErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [monitor_threadErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, monitor_threadErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-30 13:48:22,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 13:48:22,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1504541215, now seen corresponding path program 5 times [2023-08-30 13:48:22,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 13:48:22,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791110867] [2023-08-30 13:48:22,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 13:48:22,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 13:48:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 13:48:24,753 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:24,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 13:48:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791110867] [2023-08-30 13:48:24,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791110867] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 13:48:24,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800440875] [2023-08-30 13:48:24,753 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 13:48:24,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 13:48:24,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 13:48:24,777 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 13:48:24,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 13:48:25,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-08-30 13:48:25,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 13:48:25,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-30 13:48:25,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 13:48:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:25,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 13:48:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 13:48:27,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800440875] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 13:48:27,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 13:48:27,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 95 [2023-08-30 13:48:27,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452614150] [2023-08-30 13:48:27,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 13:48:27,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-08-30 13:48:27,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 13:48:27,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-08-30 13:48:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-08-30 13:48:28,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 497 [2023-08-30 13:48:28,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 118 transitions, 1047 flow. Second operand has 97 states, 97 states have (on average 216.10309278350516) internal successors, (20962), 97 states have internal predecessors, (20962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 13:48:28,272 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 13:48:28,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 497 [2023-08-30 13:48:28,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand