./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:48:55,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:48:55,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:48:56,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:48:56,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:48:56,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:48:56,016 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:48:56,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:48:56,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:48:56,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:48:56,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:48:56,030 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:48:56,030 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:48:56,032 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:48:56,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:48:56,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:48:56,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:48:56,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:48:56,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:48:56,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:48:56,047 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:48:56,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:48:56,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:48:56,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:48:56,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:48:56,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:48:56,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:48:56,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:48:56,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:48:56,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:48:56,062 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:48:56,069 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:48:56,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:48:56,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:48:56,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:48:56,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:48:56,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:48:56,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:48:56,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:48:56,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:48:56,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:48:56,077 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:48:56,109 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:48:56,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:48:56,111 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:48:56,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:48:56,112 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:48:56,112 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:48:56,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:48:56,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:48:56,113 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:48:56,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:48:56,114 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:48:56,114 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:48:56,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:48:56,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:48:56,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:48:56,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:48:56,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:48:56,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:48:56,116 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:48:56,116 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:48:56,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:48:56,116 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:48:56,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:48:56,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:48:56,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:48:56,117 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:48:56,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:56,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:48:56,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:48:56,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:48:56,118 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:48:56,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:48:56,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:48:56,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:48:56,119 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:48:56,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:48:56,119 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:48:56,120 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:48:56,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:48:56,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:48:56,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:48:56,475 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:48:56,475 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:48:56,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-09-01 07:48:57,619 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:48:57,852 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:48:57,853 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-09-01 07:48:57,860 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3312ec3b/177d21b15d9848ea9f4c172ba9892915/FLAG81d8964f9 [2023-09-01 07:48:57,886 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3312ec3b/177d21b15d9848ea9f4c172ba9892915 [2023-09-01 07:48:57,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:48:57,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:48:57,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:57,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:48:57,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:48:57,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:57" (1/1) ... [2023-09-01 07:48:57,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cf804d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:57, skipping insertion in model container [2023-09-01 07:48:57,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:48:57" (1/1) ... [2023-09-01 07:48:57,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:48:57,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:48:58,118 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-09-01 07:48:58,123 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:58,135 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:48:58,176 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-09-01 07:48:58,178 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:48:58,189 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:58,190 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:48:58,196 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:48:58,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58 WrapperNode [2023-09-01 07:48:58,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:48:58,198 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:58,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:48:58,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:48:58,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,219 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,251 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 165 [2023-09-01 07:48:58,252 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:48:58,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:48:58,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:48:58,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:48:58,262 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,302 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,304 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:48:58,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:48:58,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:48:58,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:48:58,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (1/1) ... [2023-09-01 07:48:58,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:48:58,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:48:58,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:48:58,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:48:58,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:48:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:48:58,413 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:48:58,413 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:48:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:48:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:48:58,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:48:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:48:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:48:58,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:48:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:48:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:48:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:48:58,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:48:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:48:58,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:48:58,417 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:48:58,498 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:48:58,500 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:48:58,852 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:48:59,078 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:48:59,078 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 07:48:59,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:59 BoogieIcfgContainer [2023-09-01 07:48:59,080 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:48:59,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:48:59,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:48:59,085 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:48:59,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:48:57" (1/3) ... [2023-09-01 07:48:59,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb2ca65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:59, skipping insertion in model container [2023-09-01 07:48:59,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:48:58" (2/3) ... [2023-09-01 07:48:59,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb2ca65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:48:59, skipping insertion in model container [2023-09-01 07:48:59,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:48:59" (3/3) ... [2023-09-01 07:48:59,088 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-09-01 07:48:59,094 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:48:59,102 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:48:59,102 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 07:48:59,103 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:48:59,198 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 07:48:59,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 272 flow [2023-09-01 07:48:59,325 INFO L130 PetriNetUnfolder]: 7/121 cut-off events. [2023-09-01 07:48:59,325 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:48:59,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 7/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-09-01 07:48:59,331 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 272 flow [2023-09-01 07:48:59,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 106 transitions, 224 flow [2023-09-01 07:48:59,339 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:48:59,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 106 transitions, 224 flow [2023-09-01 07:48:59,357 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 106 transitions, 224 flow [2023-09-01 07:48:59,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 106 transitions, 224 flow [2023-09-01 07:48:59,397 INFO L130 PetriNetUnfolder]: 7/106 cut-off events. [2023-09-01 07:48:59,398 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 07:48:59,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 106 events. 7/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 173 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-09-01 07:48:59,401 INFO L119 LiptonReduction]: Number of co-enabled transitions 2456 [2023-09-01 07:49:04,490 INFO L134 LiptonReduction]: Checked pairs total: 4008 [2023-09-01 07:49:04,490 INFO L136 LiptonReduction]: Total number of compositions: 125 [2023-09-01 07:49:04,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:49:04,508 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;@4ce3b41c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:49:04,508 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-09-01 07:49:04,512 INFO L130 PetriNetUnfolder]: 0/5 cut-off events. [2023-09-01 07:49:04,512 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:49:04,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:04,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:49:04,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:04,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:04,517 INFO L85 PathProgramCache]: Analyzing trace with hash 18741990, now seen corresponding path program 1 times [2023-09-01 07:49:04,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:04,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432761392] [2023-09-01 07:49:04,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:04,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:04,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:04,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:04,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432761392] [2023-09-01 07:49:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432761392] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:04,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:49:04,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108100524] [2023-09-01 07:49:04,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:04,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:04,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:04,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:04,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:04,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:04,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:04,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:04,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:04,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:05,319 INFO L130 PetriNetUnfolder]: 1625/2579 cut-off events. [2023-09-01 07:49:05,319 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-09-01 07:49:05,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5420 conditions, 2579 events. 1625/2579 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 17812 event pairs, 459 based on Foata normal form. 0/1205 useless extension candidates. Maximal degree in co-relation 4985. Up to 1761 conditions per place. [2023-09-01 07:49:05,342 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 47 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-09-01 07:49:05,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 225 flow [2023-09-01 07:49:05,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:05,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:05,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 334 transitions. [2023-09-01 07:49:05,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44712182061579653 [2023-09-01 07:49:05,361 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 334 transitions. [2023-09-01 07:49:05,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 334 transitions. [2023-09-01 07:49:05,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:05,366 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 334 transitions. [2023-09-01 07:49:05,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.33333333333333) internal successors, (334), 3 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,379 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 80 flow. Second operand 3 states and 334 transitions. [2023-09-01 07:49:05,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 225 flow [2023-09-01 07:49:05,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 215 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 07:49:05,389 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 90 flow [2023-09-01 07:49:05,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-09-01 07:49:05,396 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-09-01 07:49:05,396 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 90 flow [2023-09-01 07:49:05,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:05,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 07:49:05,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:49:05,400 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:05,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:05,401 INFO L85 PathProgramCache]: Analyzing trace with hash 18741992, now seen corresponding path program 1 times [2023-09-01 07:49:05,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:05,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034178635] [2023-09-01 07:49:05,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:05,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:05,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:05,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034178635] [2023-09-01 07:49:05,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034178635] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:05,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:05,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:49:05,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391720771] [2023-09-01 07:49:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:05,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:05,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:05,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:05,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:05,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:05,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:05,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:05,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:05,916 INFO L130 PetriNetUnfolder]: 2221/3195 cut-off events. [2023-09-01 07:49:05,916 INFO L131 PetriNetUnfolder]: For 164/164 co-relation queries the response was YES. [2023-09-01 07:49:05,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7099 conditions, 3195 events. 2221/3195 cut-off events. For 164/164 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 16601 event pairs, 511 based on Foata normal form. 0/1435 useless extension candidates. Maximal degree in co-relation 6384. Up to 3037 conditions per place. [2023-09-01 07:49:05,952 INFO L137 encePairwiseOnDemand]: 237/249 looper letters, 38 selfloop transitions, 6 changer transitions 0/48 dead transitions. [2023-09-01 07:49:05,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 48 transitions, 216 flow [2023-09-01 07:49:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-09-01 07:49:05,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4350736278447122 [2023-09-01 07:49:05,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-09-01 07:49:05,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-09-01 07:49:05,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:05,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-09-01 07:49:05,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,961 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 90 flow. Second operand 3 states and 325 transitions. [2023-09-01 07:49:05,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 48 transitions, 216 flow [2023-09-01 07:49:05,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 48 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:05,964 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 140 flow [2023-09-01 07:49:05,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-09-01 07:49:05,965 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-09-01 07:49:05,965 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 140 flow [2023-09-01 07:49:05,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.0) internal successors, (279), 3 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:05,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:05,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:49:05,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:49:05,967 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:05,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:05,969 INFO L85 PathProgramCache]: Analyzing trace with hash 831194038, now seen corresponding path program 1 times [2023-09-01 07:49:05,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:05,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367857347] [2023-09-01 07:49:05,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:05,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:06,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:06,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:06,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367857347] [2023-09-01 07:49:06,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367857347] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:06,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:06,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:49:06,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128872873] [2023-09-01 07:49:06,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:06,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:06,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:06,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:06,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:06,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:06,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:06,052 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:06,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:06,302 INFO L130 PetriNetUnfolder]: 1435/2194 cut-off events. [2023-09-01 07:49:06,302 INFO L131 PetriNetUnfolder]: For 410/410 co-relation queries the response was YES. [2023-09-01 07:49:06,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5924 conditions, 2194 events. 1435/2194 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 13757 event pairs, 1211 based on Foata normal form. 0/1311 useless extension candidates. Maximal degree in co-relation 3665. Up to 2172 conditions per place. [2023-09-01 07:49:06,317 INFO L137 encePairwiseOnDemand]: 246/249 looper letters, 31 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-09-01 07:49:06,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 196 flow [2023-09-01 07:49:06,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:06,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-09-01 07:49:06,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069611780455154 [2023-09-01 07:49:06,319 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-09-01 07:49:06,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-09-01 07:49:06,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:06,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-09-01 07:49:06,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,322 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 140 flow. Second operand 3 states and 304 transitions. [2023-09-01 07:49:06,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 196 flow [2023-09-01 07:49:06,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:06,325 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 128 flow [2023-09-01 07:49:06,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-09-01 07:49:06,326 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-09-01 07:49:06,326 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 128 flow [2023-09-01 07:49:06,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:06,327 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:49:06,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 07:49:06,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:06,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:06,328 INFO L85 PathProgramCache]: Analyzing trace with hash 831194033, now seen corresponding path program 1 times [2023-09-01 07:49:06,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:06,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901638679] [2023-09-01 07:49:06,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:06,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:06,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:06,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:06,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901638679] [2023-09-01 07:49:06,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901638679] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:06,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:06,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:49:06,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360575884] [2023-09-01 07:49:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:06,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:06,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:06,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:06,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:06,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:06,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:06,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:06,591 INFO L130 PetriNetUnfolder]: 1330/2032 cut-off events. [2023-09-01 07:49:06,591 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2023-09-01 07:49:06,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 2032 events. 1330/2032 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 12427 event pairs, 1107 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 5397. Up to 2012 conditions per place. [2023-09-01 07:49:06,603 INFO L137 encePairwiseOnDemand]: 247/249 looper letters, 30 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-09-01 07:49:06,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 186 flow [2023-09-01 07:49:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:06,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:06,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 302 transitions. [2023-09-01 07:49:06,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042838018741633 [2023-09-01 07:49:06,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 302 transitions. [2023-09-01 07:49:06,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 302 transitions. [2023-09-01 07:49:06,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:06,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 302 transitions. [2023-09-01 07:49:06,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,609 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,609 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 128 flow. Second operand 3 states and 302 transitions. [2023-09-01 07:49:06,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 186 flow [2023-09-01 07:49:06,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:06,612 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 125 flow [2023-09-01 07:49:06,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-09-01 07:49:06,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-09-01 07:49:06,614 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 125 flow [2023-09-01 07:49:06,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:06,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:06,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:49:06,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 07:49:06,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:06,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:06,615 INFO L85 PathProgramCache]: Analyzing trace with hash 831194036, now seen corresponding path program 1 times [2023-09-01 07:49:06,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:06,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855140965] [2023-09-01 07:49:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:06,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:06,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:06,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:06,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855140965] [2023-09-01 07:49:06,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855140965] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:06,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804155096] [2023-09-01 07:49:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:06,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:06,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:06,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:06,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:49:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:06,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:49:06,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:07,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:07,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:07,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:07,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804155096] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:07,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:07,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-09-01 07:49:07,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064062348] [2023-09-01 07:49:07,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:07,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:49:07,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:49:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:49:07,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 249 [2023-09-01 07:49:07,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 125 flow. Second operand has 8 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:07,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:07,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 249 [2023-09-01 07:49:07,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:08,449 INFO L130 PetriNetUnfolder]: 4261/6319 cut-off events. [2023-09-01 07:49:08,450 INFO L131 PetriNetUnfolder]: For 900/900 co-relation queries the response was YES. [2023-09-01 07:49:08,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16535 conditions, 6319 events. 4261/6319 cut-off events. For 900/900 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 36225 event pairs, 145 based on Foata normal form. 20/3851 useless extension candidates. Maximal degree in co-relation 16524. Up to 2787 conditions per place. [2023-09-01 07:49:08,493 INFO L137 encePairwiseOnDemand]: 235/249 looper letters, 101 selfloop transitions, 54 changer transitions 0/159 dead transitions. [2023-09-01 07:49:08,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 159 transitions, 836 flow [2023-09-01 07:49:08,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 07:49:08,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 07:49:08,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 978 transitions. [2023-09-01 07:49:08,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364123159303882 [2023-09-01 07:49:08,497 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 978 transitions. [2023-09-01 07:49:08,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 978 transitions. [2023-09-01 07:49:08,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:08,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 978 transitions. [2023-09-01 07:49:08,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 108.66666666666667) internal successors, (978), 9 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:08,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:08,506 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 249.0) internal successors, (2490), 10 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:08,507 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 125 flow. Second operand 9 states and 978 transitions. [2023-09-01 07:49:08,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 159 transitions, 836 flow [2023-09-01 07:49:08,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 159 transitions, 835 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:08,512 INFO L231 Difference]: Finished difference. Result has 53 places, 86 transitions, 590 flow [2023-09-01 07:49:08,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=590, PETRI_PLACES=53, PETRI_TRANSITIONS=86} [2023-09-01 07:49:08,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-09-01 07:49:08,514 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 86 transitions, 590 flow [2023-09-01 07:49:08,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 91.5) internal successors, (732), 8 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:08,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:08,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:49:08,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:08,720 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 [2023-09-01 07:49:08,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:08,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:08,721 INFO L85 PathProgramCache]: Analyzing trace with hash 836238345, now seen corresponding path program 1 times [2023-09-01 07:49:08,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:08,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742827093] [2023-09-01 07:49:08,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:08,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:08,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:08,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:08,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742827093] [2023-09-01 07:49:08,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742827093] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:08,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:08,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:49:08,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958321026] [2023-09-01 07:49:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:08,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:08,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:08,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:08,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:08,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 249 [2023-09-01 07:49:08,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 86 transitions, 590 flow. Second operand has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:08,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:08,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 249 [2023-09-01 07:49:08,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:09,400 INFO L130 PetriNetUnfolder]: 3631/5301 cut-off events. [2023-09-01 07:49:09,400 INFO L131 PetriNetUnfolder]: For 11594/11594 co-relation queries the response was YES. [2023-09-01 07:49:09,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19500 conditions, 5301 events. 3631/5301 cut-off events. For 11594/11594 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 29190 event pairs, 673 based on Foata normal form. 84/4477 useless extension candidates. Maximal degree in co-relation 19482. Up to 4283 conditions per place. [2023-09-01 07:49:09,444 INFO L137 encePairwiseOnDemand]: 243/249 looper letters, 99 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2023-09-01 07:49:09,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 109 transitions, 931 flow [2023-09-01 07:49:09,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:09,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-09-01 07:49:09,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42168674698795183 [2023-09-01 07:49:09,447 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-09-01 07:49:09,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-09-01 07:49:09,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:09,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-09-01 07:49:09,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,450 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,450 INFO L175 Difference]: Start difference. First operand has 53 places, 86 transitions, 590 flow. Second operand 3 states and 315 transitions. [2023-09-01 07:49:09,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 109 transitions, 931 flow [2023-09-01 07:49:09,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 109 transitions, 886 flow, removed 21 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:09,489 INFO L231 Difference]: Finished difference. Result has 55 places, 83 transitions, 574 flow [2023-09-01 07:49:09,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=55, PETRI_TRANSITIONS=83} [2023-09-01 07:49:09,492 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-09-01 07:49:09,492 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 83 transitions, 574 flow [2023-09-01 07:49:09,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:09,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:09,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:49:09,493 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:09,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:09,494 INFO L85 PathProgramCache]: Analyzing trace with hash 466034312, now seen corresponding path program 1 times [2023-09-01 07:49:09,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:09,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789782041] [2023-09-01 07:49:09,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:09,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:09,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:09,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:09,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789782041] [2023-09-01 07:49:09,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789782041] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:09,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:09,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:49:09,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760028166] [2023-09-01 07:49:09,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:09,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:49:09,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:09,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:49:09,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:49:09,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 249 [2023-09-01 07:49:09,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 83 transitions, 574 flow. Second operand has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:09,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:09,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 249 [2023-09-01 07:49:09,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:10,287 INFO L130 PetriNetUnfolder]: 3233/4769 cut-off events. [2023-09-01 07:49:10,287 INFO L131 PetriNetUnfolder]: For 11642/11642 co-relation queries the response was YES. [2023-09-01 07:49:10,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17688 conditions, 4769 events. 3233/4769 cut-off events. For 11642/11642 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 26080 event pairs, 323 based on Foata normal form. 90/4315 useless extension candidates. Maximal degree in co-relation 17668. Up to 3726 conditions per place. [2023-09-01 07:49:10,320 INFO L137 encePairwiseOnDemand]: 245/249 looper letters, 97 selfloop transitions, 7 changer transitions 0/108 dead transitions. [2023-09-01 07:49:10,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 880 flow [2023-09-01 07:49:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:49:10,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:49:10,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 486 transitions. [2023-09-01 07:49:10,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39036144578313253 [2023-09-01 07:49:10,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 486 transitions. [2023-09-01 07:49:10,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 486 transitions. [2023-09-01 07:49:10,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:10,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 486 transitions. [2023-09-01 07:49:10,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:10,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:10,327 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 249.0) internal successors, (1494), 6 states have internal predecessors, (1494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:10,327 INFO L175 Difference]: Start difference. First operand has 55 places, 83 transitions, 574 flow. Second operand 5 states and 486 transitions. [2023-09-01 07:49:10,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 880 flow [2023-09-01 07:49:10,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 108 transitions, 862 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 07:49:10,378 INFO L231 Difference]: Finished difference. Result has 54 places, 74 transitions, 505 flow [2023-09-01 07:49:10,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=505, PETRI_PLACES=54, PETRI_TRANSITIONS=74} [2023-09-01 07:49:10,379 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-09-01 07:49:10,379 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 74 transitions, 505 flow [2023-09-01 07:49:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 88.4) internal successors, (442), 5 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:10,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:10,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:10,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:49:10,380 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:10,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:10,381 INFO L85 PathProgramCache]: Analyzing trace with hash 465530248, now seen corresponding path program 1 times [2023-09-01 07:49:10,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:10,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070750313] [2023-09-01 07:49:10,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:10,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:10,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:10,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070750313] [2023-09-01 07:49:10,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070750313] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:10,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:10,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:49:10,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350637433] [2023-09-01 07:49:10,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:10,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:10,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:10,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:10,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:10,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:10,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 74 transitions, 505 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:10,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:10,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:10,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:11,022 INFO L130 PetriNetUnfolder]: 3309/5170 cut-off events. [2023-09-01 07:49:11,022 INFO L131 PetriNetUnfolder]: For 13142/13142 co-relation queries the response was YES. [2023-09-01 07:49:11,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18358 conditions, 5170 events. 3309/5170 cut-off events. For 13142/13142 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 32722 event pairs, 859 based on Foata normal form. 149/4786 useless extension candidates. Maximal degree in co-relation 18339. Up to 3449 conditions per place. [2023-09-01 07:49:11,059 INFO L137 encePairwiseOnDemand]: 244/249 looper letters, 105 selfloop transitions, 8 changer transitions 0/117 dead transitions. [2023-09-01 07:49:11,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 117 transitions, 1012 flow [2023-09-01 07:49:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:11,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-09-01 07:49:11,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428380187416332 [2023-09-01 07:49:11,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-09-01 07:49:11,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-09-01 07:49:11,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:11,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-09-01 07:49:11,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,065 INFO L175 Difference]: Start difference. First operand has 54 places, 74 transitions, 505 flow. Second operand 3 states and 320 transitions. [2023-09-01 07:49:11,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 117 transitions, 1012 flow [2023-09-01 07:49:11,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 117 transitions, 1002 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:49:11,081 INFO L231 Difference]: Finished difference. Result has 54 places, 77 transitions, 574 flow [2023-09-01 07:49:11,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=574, PETRI_PLACES=54, PETRI_TRANSITIONS=77} [2023-09-01 07:49:11,083 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-09-01 07:49:11,083 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 77 transitions, 574 flow [2023-09-01 07:49:11,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:11,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:11,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:49:11,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:11,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:11,086 INFO L85 PathProgramCache]: Analyzing trace with hash -75606043, now seen corresponding path program 1 times [2023-09-01 07:49:11,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:11,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985163608] [2023-09-01 07:49:11,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:11,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:11,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:11,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:11,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985163608] [2023-09-01 07:49:11,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985163608] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:11,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:11,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:49:11,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761627441] [2023-09-01 07:49:11,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:11,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:49:11,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:11,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:49:11,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:49:11,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:11,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 77 transitions, 574 flow. Second operand has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:11,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:11,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:11,833 INFO L130 PetriNetUnfolder]: 3303/5301 cut-off events. [2023-09-01 07:49:11,833 INFO L131 PetriNetUnfolder]: For 13260/13260 co-relation queries the response was YES. [2023-09-01 07:49:11,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19395 conditions, 5301 events. 3303/5301 cut-off events. For 13260/13260 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 34035 event pairs, 169 based on Foata normal form. 130/5067 useless extension candidates. Maximal degree in co-relation 19376. Up to 3433 conditions per place. [2023-09-01 07:49:11,882 INFO L137 encePairwiseOnDemand]: 236/249 looper letters, 77 selfloop transitions, 41 changer transitions 0/122 dead transitions. [2023-09-01 07:49:11,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 122 transitions, 1082 flow [2023-09-01 07:49:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:49:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:49:11,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 426 transitions. [2023-09-01 07:49:11,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42771084337349397 [2023-09-01 07:49:11,885 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 426 transitions. [2023-09-01 07:49:11,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 426 transitions. [2023-09-01 07:49:11,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:11,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 426 transitions. [2023-09-01 07:49:11,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,888 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 249.0) internal successors, (1245), 5 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,888 INFO L175 Difference]: Start difference. First operand has 54 places, 77 transitions, 574 flow. Second operand 4 states and 426 transitions. [2023-09-01 07:49:11,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 122 transitions, 1082 flow [2023-09-01 07:49:11,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 1072 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:11,912 INFO L231 Difference]: Finished difference. Result has 58 places, 102 transitions, 1015 flow [2023-09-01 07:49:11,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1015, PETRI_PLACES=58, PETRI_TRANSITIONS=102} [2023-09-01 07:49:11,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 16 predicate places. [2023-09-01 07:49:11,913 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 102 transitions, 1015 flow [2023-09-01 07:49:11,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 93.5) internal successors, (374), 4 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:11,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-09-01 07:49:11,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 07:49:11,915 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:11,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:11,915 INFO L85 PathProgramCache]: Analyzing trace with hash -86438593, now seen corresponding path program 1 times [2023-09-01 07:49:11,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:11,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752814198] [2023-09-01 07:49:11,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:11,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:11,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:11,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:11,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752814198] [2023-09-01 07:49:11,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752814198] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:11,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:49:11,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:49:11,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752161538] [2023-09-01 07:49:11,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:11,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:11,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:49:11,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:11,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 102 transitions, 1015 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:11,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:11,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:11,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:12,493 INFO L130 PetriNetUnfolder]: 2333/3634 cut-off events. [2023-09-01 07:49:12,494 INFO L131 PetriNetUnfolder]: For 22369/22369 co-relation queries the response was YES. [2023-09-01 07:49:12,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14741 conditions, 3634 events. 2333/3634 cut-off events. For 22369/22369 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 22278 event pairs, 1459 based on Foata normal form. 391/3608 useless extension candidates. Maximal degree in co-relation 14719. Up to 3510 conditions per place. [2023-09-01 07:49:12,530 INFO L137 encePairwiseOnDemand]: 246/249 looper letters, 73 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-09-01 07:49:12,531 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 853 flow [2023-09-01 07:49:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:12,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:12,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 300 transitions. [2023-09-01 07:49:12,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40160642570281124 [2023-09-01 07:49:12,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 300 transitions. [2023-09-01 07:49:12,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 300 transitions. [2023-09-01 07:49:12,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:12,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 300 transitions. [2023-09-01 07:49:12,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,536 INFO L175 Difference]: Start difference. First operand has 58 places, 102 transitions, 1015 flow. Second operand 3 states and 300 transitions. [2023-09-01 07:49:12,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 853 flow [2023-09-01 07:49:12,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 78 transitions, 835 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 07:49:12,557 INFO L231 Difference]: Finished difference. Result has 55 places, 78 transitions, 689 flow [2023-09-01 07:49:12,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=687, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=689, PETRI_PLACES=55, PETRI_TRANSITIONS=78} [2023-09-01 07:49:12,559 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places. [2023-09-01 07:49:12,559 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 78 transitions, 689 flow [2023-09-01 07:49:12,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:12,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:12,560 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-09-01 07:49:12,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 07:49:12,560 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:12,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash -86438590, now seen corresponding path program 1 times [2023-09-01 07:49:12,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:12,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019197451] [2023-09-01 07:49:12,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:12,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:12,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:12,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019197451] [2023-09-01 07:49:12,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019197451] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:12,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155368744] [2023-09-01 07:49:12,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:12,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:12,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:12,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:12,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:49:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:12,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 07:49:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:12,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:13,375 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:13,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155368744] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:13,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:13,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2023-09-01 07:49:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513180823] [2023-09-01 07:49:13,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:13,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 07:49:13,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:13,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 07:49:13,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-09-01 07:49:13,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 249 [2023-09-01 07:49:13,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 78 transitions, 689 flow. Second operand has 10 states, 10 states have (on average 91.4) internal successors, (914), 10 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:13,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:13,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 249 [2023-09-01 07:49:13,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:14,273 INFO L130 PetriNetUnfolder]: 3489/5589 cut-off events. [2023-09-01 07:49:14,273 INFO L131 PetriNetUnfolder]: For 21818/21818 co-relation queries the response was YES. [2023-09-01 07:49:14,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21660 conditions, 5589 events. 3489/5589 cut-off events. For 21818/21818 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 34201 event pairs, 57 based on Foata normal form. 450/5483 useless extension candidates. Maximal degree in co-relation 21638. Up to 2025 conditions per place. [2023-09-01 07:49:14,316 INFO L137 encePairwiseOnDemand]: 238/249 looper letters, 124 selfloop transitions, 98 changer transitions 0/226 dead transitions. [2023-09-01 07:49:14,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 226 transitions, 2018 flow [2023-09-01 07:49:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 07:49:14,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 07:49:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1157 transitions. [2023-09-01 07:49:14,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224169404892296 [2023-09-01 07:49:14,321 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1157 transitions. [2023-09-01 07:49:14,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1157 transitions. [2023-09-01 07:49:14,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:14,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1157 transitions. [2023-09-01 07:49:14,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:14,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 249.0) internal successors, (2988), 12 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:14,330 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 249.0) internal successors, (2988), 12 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:14,330 INFO L175 Difference]: Start difference. First operand has 55 places, 78 transitions, 689 flow. Second operand 11 states and 1157 transitions. [2023-09-01 07:49:14,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 226 transitions, 2018 flow [2023-09-01 07:49:14,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 226 transitions, 2017 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:14,355 INFO L231 Difference]: Finished difference. Result has 68 places, 139 transitions, 1657 flow [2023-09-01 07:49:14,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1657, PETRI_PLACES=68, PETRI_TRANSITIONS=139} [2023-09-01 07:49:14,356 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-09-01 07:49:14,356 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 139 transitions, 1657 flow [2023-09-01 07:49:14,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.4) internal successors, (914), 10 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:14,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:14,357 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-09-01 07:49:14,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:14,563 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,SelfDestructingSolverStorable10 [2023-09-01 07:49:14,564 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:14,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash -86438592, now seen corresponding path program 1 times [2023-09-01 07:49:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:14,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856774172] [2023-09-01 07:49:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:14,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:14,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856774172] [2023-09-01 07:49:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856774172] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:14,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356341942] [2023-09-01 07:49:14,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:14,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:14,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:14,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:14,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:49:14,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:14,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:49:14,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:14,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:15,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:15,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356341942] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:15,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:15,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-09-01 07:49:15,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823772187] [2023-09-01 07:49:15,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:15,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 07:49:15,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:15,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 07:49:15,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2023-09-01 07:49:15,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 249 [2023-09-01 07:49:15,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 139 transitions, 1657 flow. Second operand has 11 states, 11 states have (on average 91.36363636363636) internal successors, (1005), 11 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:15,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:15,326 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 249 [2023-09-01 07:49:15,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:17,063 INFO L130 PetriNetUnfolder]: 6123/9849 cut-off events. [2023-09-01 07:49:17,064 INFO L131 PetriNetUnfolder]: For 60610/60610 co-relation queries the response was YES. [2023-09-01 07:49:17,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45669 conditions, 9849 events. 6123/9849 cut-off events. For 60610/60610 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 66990 event pairs, 193 based on Foata normal form. 106/9427 useless extension candidates. Maximal degree in co-relation 45642. Up to 3347 conditions per place. [2023-09-01 07:49:17,160 INFO L137 encePairwiseOnDemand]: 238/249 looper letters, 296 selfloop transitions, 148 changer transitions 0/448 dead transitions. [2023-09-01 07:49:17,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 448 transitions, 5266 flow [2023-09-01 07:49:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 07:49:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 07:49:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1680 transitions. [2023-09-01 07:49:17,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42168674698795183 [2023-09-01 07:49:17,166 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1680 transitions. [2023-09-01 07:49:17,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1680 transitions. [2023-09-01 07:49:17,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:17,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1680 transitions. [2023-09-01 07:49:17,170 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 105.0) internal successors, (1680), 16 states have internal predecessors, (1680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:17,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 249.0) internal successors, (4233), 17 states have internal predecessors, (4233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:17,177 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 249.0) internal successors, (4233), 17 states have internal predecessors, (4233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:17,177 INFO L175 Difference]: Start difference. First operand has 68 places, 139 transitions, 1657 flow. Second operand 16 states and 1680 transitions. [2023-09-01 07:49:17,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 448 transitions, 5266 flow [2023-09-01 07:49:17,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 448 transitions, 4619 flow, removed 242 selfloop flow, removed 4 redundant places. [2023-09-01 07:49:17,332 INFO L231 Difference]: Finished difference. Result has 90 places, 248 transitions, 3271 flow [2023-09-01 07:49:17,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=1225, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3271, PETRI_PLACES=90, PETRI_TRANSITIONS=248} [2023-09-01 07:49:17,333 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-09-01 07:49:17,334 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 248 transitions, 3271 flow [2023-09-01 07:49:17,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 91.36363636363636) internal successors, (1005), 11 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:17,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:17,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:17,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:17,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:17,546 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:17,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:17,546 INFO L85 PathProgramCache]: Analyzing trace with hash -178247048, now seen corresponding path program 1 times [2023-09-01 07:49:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785150601] [2023-09-01 07:49:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:17,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:17,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:17,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785150601] [2023-09-01 07:49:17,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785150601] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:17,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [875596366] [2023-09-01 07:49:17,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:17,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:17,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:17,779 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:17,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:49:17,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:17,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:49:17,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:17,899 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:17,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:49:17,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [875596366] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:17,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:49:17,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-09-01 07:49:17,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607359974] [2023-09-01 07:49:17,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:17,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:17,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:17,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:17,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:49:17,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:17,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 248 transitions, 3271 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:17,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:17,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:17,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:19,047 INFO L130 PetriNetUnfolder]: 5341/8748 cut-off events. [2023-09-01 07:49:19,047 INFO L131 PetriNetUnfolder]: For 84324/84324 co-relation queries the response was YES. [2023-09-01 07:49:19,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41629 conditions, 8748 events. 5341/8748 cut-off events. For 84324/84324 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 62753 event pairs, 3525 based on Foata normal form. 658/8859 useless extension candidates. Maximal degree in co-relation 41591. Up to 8244 conditions per place. [2023-09-01 07:49:19,152 INFO L137 encePairwiseOnDemand]: 247/249 looper letters, 194 selfloop transitions, 1 changer transitions 0/199 dead transitions. [2023-09-01 07:49:19,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 199 transitions, 3011 flow [2023-09-01 07:49:19,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:19,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-09-01 07:49:19,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3989290495314592 [2023-09-01 07:49:19,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-09-01 07:49:19,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-09-01 07:49:19,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:19,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-09-01 07:49:19,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:19,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:19,157 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:19,157 INFO L175 Difference]: Start difference. First operand has 90 places, 248 transitions, 3271 flow. Second operand 3 states and 298 transitions. [2023-09-01 07:49:19,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 199 transitions, 3011 flow [2023-09-01 07:49:19,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 199 transitions, 2825 flow, removed 86 selfloop flow, removed 4 redundant places. [2023-09-01 07:49:19,557 INFO L231 Difference]: Finished difference. Result has 86 places, 199 transitions, 2437 flow [2023-09-01 07:49:19,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=2435, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2437, PETRI_PLACES=86, PETRI_TRANSITIONS=199} [2023-09-01 07:49:19,559 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 44 predicate places. [2023-09-01 07:49:19,560 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 199 transitions, 2437 flow [2023-09-01 07:49:19,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:19,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:19,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:19,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-09-01 07:49:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:19,764 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:19,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1511696266, now seen corresponding path program 1 times [2023-09-01 07:49:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:19,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305003380] [2023-09-01 07:49:19,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:19,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:19,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:19,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305003380] [2023-09-01 07:49:19,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305003380] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:19,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411078152] [2023-09-01 07:49:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:19,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:19,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:19,906 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:19,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:49:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:19,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 07:49:19,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:20,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:20,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:20,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411078152] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:20,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:20,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 6 [2023-09-01 07:49:20,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620029963] [2023-09-01 07:49:20,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 07:49:20,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:20,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 07:49:20,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:49:20,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 249 [2023-09-01 07:49:20,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 199 transitions, 2437 flow. Second operand has 8 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:20,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:20,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 249 [2023-09-01 07:49:20,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:22,297 INFO L130 PetriNetUnfolder]: 9911/16699 cut-off events. [2023-09-01 07:49:22,298 INFO L131 PetriNetUnfolder]: For 133792/133792 co-relation queries the response was YES. [2023-09-01 07:49:22,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76418 conditions, 16699 events. 9911/16699 cut-off events. For 133792/133792 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 131126 event pairs, 791 based on Foata normal form. 236/16679 useless extension candidates. Maximal degree in co-relation 76380. Up to 4133 conditions per place. [2023-09-01 07:49:22,452 INFO L137 encePairwiseOnDemand]: 244/249 looper letters, 446 selfloop transitions, 100 changer transitions 0/550 dead transitions. [2023-09-01 07:49:22,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 550 transitions, 7735 flow [2023-09-01 07:49:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 07:49:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 07:49:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 813 transitions. [2023-09-01 07:49:22,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40813253012048195 [2023-09-01 07:49:22,456 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 813 transitions. [2023-09-01 07:49:22,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 813 transitions. [2023-09-01 07:49:22,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:22,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 813 transitions. [2023-09-01 07:49:22,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.625) internal successors, (813), 8 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:22,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:22,464 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 249.0) internal successors, (2241), 9 states have internal predecessors, (2241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:22,464 INFO L175 Difference]: Start difference. First operand has 86 places, 199 transitions, 2437 flow. Second operand 8 states and 813 transitions. [2023-09-01 07:49:22,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 550 transitions, 7735 flow [2023-09-01 07:49:23,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 550 transitions, 7734 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:23,157 INFO L231 Difference]: Finished difference. Result has 95 places, 246 transitions, 3536 flow [2023-09-01 07:49:23,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=2286, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3536, PETRI_PLACES=95, PETRI_TRANSITIONS=246} [2023-09-01 07:49:23,157 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 53 predicate places. [2023-09-01 07:49:23,158 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 246 transitions, 3536 flow [2023-09-01 07:49:23,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.375) internal successors, (723), 8 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:23,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:23,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:23,167 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 07:49:23,365 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:23,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash 2048919237, now seen corresponding path program 1 times [2023-09-01 07:49:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7770280] [2023-09-01 07:49:23,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:23,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:23,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:23,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:23,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7770280] [2023-09-01 07:49:23,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7770280] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:23,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177440762] [2023-09-01 07:49:23,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:23,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:23,564 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:23,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:49:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:23,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 07:49:23,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:23,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:24,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:24,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177440762] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:24,745 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:24,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2023-09-01 07:49:24,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037411787] [2023-09-01 07:49:24,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:24,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 07:49:24,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:24,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 07:49:24,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=108, Unknown=0, NotChecked=0, Total=182 [2023-09-01 07:49:24,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 249 [2023-09-01 07:49:24,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 246 transitions, 3536 flow. Second operand has 14 states, 14 states have (on average 89.71428571428571) internal successors, (1256), 14 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:24,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:24,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 249 [2023-09-01 07:49:24,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:29,398 INFO L130 PetriNetUnfolder]: 18105/29459 cut-off events. [2023-09-01 07:49:29,399 INFO L131 PetriNetUnfolder]: For 378216/378216 co-relation queries the response was YES. [2023-09-01 07:49:29,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152546 conditions, 29459 events. 18105/29459 cut-off events. For 378216/378216 co-relation queries the response was YES. Maximal size of possible extension queue 1744. Compared 238805 event pairs, 409 based on Foata normal form. 1388/30789 useless extension candidates. Maximal degree in co-relation 152504. Up to 7793 conditions per place. [2023-09-01 07:49:29,729 INFO L137 encePairwiseOnDemand]: 239/249 looper letters, 276 selfloop transitions, 422 changer transitions 0/702 dead transitions. [2023-09-01 07:49:29,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 702 transitions, 10474 flow [2023-09-01 07:49:29,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 07:49:29,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 07:49:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1932 transitions. [2023-09-01 07:49:29,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083703233988586 [2023-09-01 07:49:29,737 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1932 transitions. [2023-09-01 07:49:29,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1932 transitions. [2023-09-01 07:49:29,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:29,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1932 transitions. [2023-09-01 07:49:29,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 101.6842105263158) internal successors, (1932), 19 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:29,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 249.0) internal successors, (4980), 20 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:29,754 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 249.0) internal successors, (4980), 20 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:29,755 INFO L175 Difference]: Start difference. First operand has 95 places, 246 transitions, 3536 flow. Second operand 19 states and 1932 transitions. [2023-09-01 07:49:29,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 702 transitions, 10474 flow [2023-09-01 07:49:31,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 702 transitions, 10380 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-09-01 07:49:31,389 INFO L231 Difference]: Finished difference. Result has 124 places, 549 transitions, 10282 flow [2023-09-01 07:49:31,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=3334, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10282, PETRI_PLACES=124, PETRI_TRANSITIONS=549} [2023-09-01 07:49:31,390 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 82 predicate places. [2023-09-01 07:49:31,390 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 549 transitions, 10282 flow [2023-09-01 07:49:31,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 89.71428571428571) internal successors, (1256), 14 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:31,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:31,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:31,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 07:49:31,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 07:49:31,591 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:31,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:31,592 INFO L85 PathProgramCache]: Analyzing trace with hash 745819166, now seen corresponding path program 1 times [2023-09-01 07:49:31,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:31,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946112916] [2023-09-01 07:49:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:31,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:31,736 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:31,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:31,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946112916] [2023-09-01 07:49:31,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946112916] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:31,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960669796] [2023-09-01 07:49:31,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:31,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:31,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:31,738 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:31,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:49:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:31,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 07:49:31,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:49:31,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:49:31,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960669796] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:49:31,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:49:31,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2023-09-01 07:49:31,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588813403] [2023-09-01 07:49:31,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:49:31,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:49:31,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:31,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:49:31,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:49:31,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 249 [2023-09-01 07:49:31,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 549 transitions, 10282 flow. Second operand has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:31,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:31,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 249 [2023-09-01 07:49:31,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:36,871 INFO L130 PetriNetUnfolder]: 15757/25922 cut-off events. [2023-09-01 07:49:36,872 INFO L131 PetriNetUnfolder]: For 538690/538690 co-relation queries the response was YES. [2023-09-01 07:49:37,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151052 conditions, 25922 events. 15757/25922 cut-off events. For 538690/538690 co-relation queries the response was YES. Maximal size of possible extension queue 1610. Compared 217034 event pairs, 10381 based on Foata normal form. 1592/27315 useless extension candidates. Maximal degree in co-relation 150997. Up to 24142 conditions per place. [2023-09-01 07:49:37,191 INFO L137 encePairwiseOnDemand]: 247/249 looper letters, 438 selfloop transitions, 1 changer transitions 0/443 dead transitions. [2023-09-01 07:49:37,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 443 transitions, 9156 flow [2023-09-01 07:49:37,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:49:37,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:49:37,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-09-01 07:49:37,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39759036144578314 [2023-09-01 07:49:37,192 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-09-01 07:49:37,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-09-01 07:49:37,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:37,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-09-01 07:49:37,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:37,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:37,195 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 249.0) internal successors, (996), 4 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:37,195 INFO L175 Difference]: Start difference. First operand has 124 places, 549 transitions, 10282 flow. Second operand 3 states and 297 transitions. [2023-09-01 07:49:37,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 443 transitions, 9156 flow [2023-09-01 07:49:42,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 443 transitions, 7977 flow, removed 537 selfloop flow, removed 2 redundant places. [2023-09-01 07:49:42,009 INFO L231 Difference]: Finished difference. Result has 121 places, 443 transitions, 7101 flow [2023-09-01 07:49:42,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=7099, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=7101, PETRI_PLACES=121, PETRI_TRANSITIONS=443} [2023-09-01 07:49:42,010 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2023-09-01 07:49:42,010 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 443 transitions, 7101 flow [2023-09-01 07:49:42,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.66666666666667) internal successors, (284), 3 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:42,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:42,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:49:42,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:49:42,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:42,212 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:42,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:42,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2048284621, now seen corresponding path program 1 times [2023-09-01 07:49:42,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:42,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403063021] [2023-09-01 07:49:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:42,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:42,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403063021] [2023-09-01 07:49:42,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403063021] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:42,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110512944] [2023-09-01 07:49:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:42,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:42,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:42,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:49:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:42,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 07:49:42,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:42,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110512944] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:43,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:43,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2023-09-01 07:49:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468168693] [2023-09-01 07:49:43,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:43,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:49:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:49:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:49:43,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 249 [2023-09-01 07:49:43,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 443 transitions, 7101 flow. Second operand has 13 states, 13 states have (on average 86.76923076923077) internal successors, (1128), 13 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:43,529 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:43,529 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 249 [2023-09-01 07:49:43,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:49:49,231 INFO L130 PetriNetUnfolder]: 17833/29679 cut-off events. [2023-09-01 07:49:49,232 INFO L131 PetriNetUnfolder]: For 468780/468780 co-relation queries the response was YES. [2023-09-01 07:49:49,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158697 conditions, 29679 events. 17833/29679 cut-off events. For 468780/468780 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 248962 event pairs, 511 based on Foata normal form. 886/30561 useless extension candidates. Maximal degree in co-relation 158642. Up to 12071 conditions per place. [2023-09-01 07:49:49,588 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 332 selfloop transitions, 363 changer transitions 0/699 dead transitions. [2023-09-01 07:49:49,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 699 transitions, 11278 flow [2023-09-01 07:49:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 07:49:49,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 07:49:49,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1657 transitions. [2023-09-01 07:49:49,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39144814552326956 [2023-09-01 07:49:49,593 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1657 transitions. [2023-09-01 07:49:49,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1657 transitions. [2023-09-01 07:49:49,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:49:49,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1657 transitions. [2023-09-01 07:49:49,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 97.47058823529412) internal successors, (1657), 17 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:49,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 249.0) internal successors, (4482), 18 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:49,604 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 249.0) internal successors, (4482), 18 states have internal predecessors, (4482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:49,604 INFO L175 Difference]: Start difference. First operand has 121 places, 443 transitions, 7101 flow. Second operand 17 states and 1657 transitions. [2023-09-01 07:49:49,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 699 transitions, 11278 flow [2023-09-01 07:49:53,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 699 transitions, 11277 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:49:53,577 INFO L231 Difference]: Finished difference. Result has 143 places, 569 transitions, 10874 flow [2023-09-01 07:49:53,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=6870, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10874, PETRI_PLACES=143, PETRI_TRANSITIONS=569} [2023-09-01 07:49:53,578 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 101 predicate places. [2023-09-01 07:49:53,578 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 569 transitions, 10874 flow [2023-09-01 07:49:53,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 86.76923076923077) internal successors, (1128), 13 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:53,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:49:53,579 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1] [2023-09-01 07:49:53,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 07:49:53,784 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,SelfDestructingSolverStorable16 [2023-09-01 07:49:53,785 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:49:53,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:49:53,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1582341477, now seen corresponding path program 2 times [2023-09-01 07:49:53,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:49:53,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736551736] [2023-09-01 07:49:53,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:49:53,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:49:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:49:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:54,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:49:54,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736551736] [2023-09-01 07:49:54,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736551736] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:49:54,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564541902] [2023-09-01 07:49:54,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:49:54,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:49:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:49:54,111 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:49:54,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:49:54,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:49:54,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:49:54,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 07:49:54,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:49:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:54,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:49:55,376 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:49:55,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564541902] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:49:55,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:49:55,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-09-01 07:49:55,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372845074] [2023-09-01 07:49:55,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:49:55,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 07:49:55,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:49:55,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 07:49:55,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2023-09-01 07:49:55,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 249 [2023-09-01 07:49:55,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 569 transitions, 10874 flow. Second operand has 16 states, 16 states have (on average 91.1875) internal successors, (1459), 16 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:49:55,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:49:55,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 249 [2023-09-01 07:49:55,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:50:03,119 INFO L130 PetriNetUnfolder]: 20451/33925 cut-off events. [2023-09-01 07:50:03,119 INFO L131 PetriNetUnfolder]: For 712542/712542 co-relation queries the response was YES. [2023-09-01 07:50:03,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 199623 conditions, 33925 events. 20451/33925 cut-off events. For 712542/712542 co-relation queries the response was YES. Maximal size of possible extension queue 2048. Compared 285785 event pairs, 1229 based on Foata normal form. 802/34723 useless extension candidates. Maximal degree in co-relation 199560. Up to 16843 conditions per place. [2023-09-01 07:50:03,630 INFO L137 encePairwiseOnDemand]: 241/249 looper letters, 539 selfloop transitions, 412 changer transitions 0/955 dead transitions. [2023-09-01 07:50:03,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 955 transitions, 16973 flow [2023-09-01 07:50:03,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-09-01 07:50:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-09-01 07:50:03,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2747 transitions. [2023-09-01 07:50:03,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40859735237245276 [2023-09-01 07:50:03,635 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2747 transitions. [2023-09-01 07:50:03,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2747 transitions. [2023-09-01 07:50:03,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:50:03,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2747 transitions. [2023-09-01 07:50:03,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 101.74074074074075) internal successors, (2747), 27 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:03,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 249.0) internal successors, (6972), 28 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:03,652 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 249.0) internal successors, (6972), 28 states have internal predecessors, (6972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:03,652 INFO L175 Difference]: Start difference. First operand has 143 places, 569 transitions, 10874 flow. Second operand 27 states and 2747 transitions. [2023-09-01 07:50:03,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 955 transitions, 16973 flow [2023-09-01 07:50:11,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 955 transitions, 15736 flow, removed 551 selfloop flow, removed 6 redundant places. [2023-09-01 07:50:11,898 INFO L231 Difference]: Finished difference. Result has 176 places, 747 transitions, 14869 flow [2023-09-01 07:50:11,898 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=9567, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14869, PETRI_PLACES=176, PETRI_TRANSITIONS=747} [2023-09-01 07:50:11,899 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 134 predicate places. [2023-09-01 07:50:11,899 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 747 transitions, 14869 flow [2023-09-01 07:50:11,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 91.1875) internal successors, (1459), 16 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:11,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:50:11,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:50:11,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:50:12,108 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,SelfDestructingSolverStorable17 [2023-09-01 07:50:12,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:50:12,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:50:12,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1375895626, now seen corresponding path program 2 times [2023-09-01 07:50:12,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:50:12,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295208110] [2023-09-01 07:50:12,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:50:12,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:50:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:50:12,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:12,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:50:12,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295208110] [2023-09-01 07:50:12,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295208110] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:50:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1919421756] [2023-09-01 07:50:12,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:50:12,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:50:12,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:50:12,397 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:50:12,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 07:50:12,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:50:12,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:50:12,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 07:50:12,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:50:12,655 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:50:12,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:50:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 07:50:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1919421756] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:50:13,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:50:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2023-09-01 07:50:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463536574] [2023-09-01 07:50:13,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:50:13,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 07:50:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:50:13,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 07:50:13,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:50:13,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 249 [2023-09-01 07:50:13,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 747 transitions, 14869 flow. Second operand has 15 states, 15 states have (on average 91.8) internal successors, (1377), 15 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:13,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:50:13,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 249 [2023-09-01 07:50:13,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:50:23,743 INFO L130 PetriNetUnfolder]: 24901/41205 cut-off events. [2023-09-01 07:50:23,743 INFO L131 PetriNetUnfolder]: For 1026238/1026238 co-relation queries the response was YES. [2023-09-01 07:50:24,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248652 conditions, 41205 events. 24901/41205 cut-off events. For 1026238/1026238 co-relation queries the response was YES. Maximal size of possible extension queue 2556. Compared 354685 event pairs, 1201 based on Foata normal form. 1174/42375 useless extension candidates. Maximal degree in co-relation 248576. Up to 16759 conditions per place. [2023-09-01 07:50:24,370 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 647 selfloop transitions, 683 changer transitions 0/1334 dead transitions. [2023-09-01 07:50:24,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1334 transitions, 25953 flow [2023-09-01 07:50:24,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 07:50:24,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 07:50:24,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3379 transitions. [2023-09-01 07:50:24,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112206401363028 [2023-09-01 07:50:24,376 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3379 transitions. [2023-09-01 07:50:24,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3379 transitions. [2023-09-01 07:50:24,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:50:24,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3379 transitions. [2023-09-01 07:50:24,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 102.39393939393939) internal successors, (3379), 33 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:24,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 249.0) internal successors, (8466), 34 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:24,390 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 249.0) internal successors, (8466), 34 states have internal predecessors, (8466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:24,390 INFO L175 Difference]: Start difference. First operand has 176 places, 747 transitions, 14869 flow. Second operand 33 states and 3379 transitions. [2023-09-01 07:50:24,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1334 transitions, 25953 flow [2023-09-01 07:50:36,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1334 transitions, 24205 flow, removed 866 selfloop flow, removed 4 redundant places. [2023-09-01 07:50:36,709 INFO L231 Difference]: Finished difference. Result has 221 places, 1060 transitions, 22782 flow [2023-09-01 07:50:36,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=13368, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=22782, PETRI_PLACES=221, PETRI_TRANSITIONS=1060} [2023-09-01 07:50:36,710 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 179 predicate places. [2023-09-01 07:50:36,710 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 1060 transitions, 22782 flow [2023-09-01 07:50:36,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.8) internal successors, (1377), 15 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:36,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:50:36,711 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:50:36,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 07:50:36,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:50:36,912 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:50:36,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:50:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1477056893, now seen corresponding path program 1 times [2023-09-01 07:50:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:50:36,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26325652] [2023-09-01 07:50:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:50:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:50:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:50:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:37,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:50:37,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26325652] [2023-09-01 07:50:37,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26325652] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:50:37,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57176757] [2023-09-01 07:50:37,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:50:37,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:50:37,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:50:37,275 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:50:37,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 07:50:37,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:50:37,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 07:50:37,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:50:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:37,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:50:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:50:40,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57176757] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:50:40,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:50:40,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 07:50:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723041704] [2023-09-01 07:50:40,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:50:40,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 07:50:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:50:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 07:50:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=214, Unknown=0, NotChecked=0, Total=342 [2023-09-01 07:50:40,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 249 [2023-09-01 07:50:40,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 1060 transitions, 22782 flow. Second operand has 19 states, 19 states have (on average 86.52631578947368) internal successors, (1644), 19 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:40,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:50:40,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 249 [2023-09-01 07:50:40,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:50:58,367 INFO L130 PetriNetUnfolder]: 31263/51525 cut-off events. [2023-09-01 07:50:58,367 INFO L131 PetriNetUnfolder]: For 1650934/1650934 co-relation queries the response was YES. [2023-09-01 07:50:59,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339006 conditions, 51525 events. 31263/51525 cut-off events. For 1650934/1650934 co-relation queries the response was YES. Maximal size of possible extension queue 3119. Compared 451564 event pairs, 317 based on Foata normal form. 2072/53581 useless extension candidates. Maximal degree in co-relation 338914. Up to 13147 conditions per place. [2023-09-01 07:50:59,576 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 545 selfloop transitions, 991 changer transitions 0/1540 dead transitions. [2023-09-01 07:50:59,577 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 1540 transitions, 33801 flow [2023-09-01 07:50:59,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-09-01 07:50:59,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-09-01 07:50:59,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2557 transitions. [2023-09-01 07:50:59,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39496447327772627 [2023-09-01 07:50:59,581 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2557 transitions. [2023-09-01 07:50:59,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2557 transitions. [2023-09-01 07:50:59,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:50:59,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2557 transitions. [2023-09-01 07:50:59,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 98.34615384615384) internal successors, (2557), 26 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:59,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 249.0) internal successors, (6723), 27 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:59,591 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 249.0) internal successors, (6723), 27 states have internal predecessors, (6723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:50:59,592 INFO L175 Difference]: Start difference. First operand has 221 places, 1060 transitions, 22782 flow. Second operand 26 states and 2557 transitions. [2023-09-01 07:50:59,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 1540 transitions, 33801 flow [2023-09-01 07:51:27,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 1540 transitions, 30447 flow, removed 1666 selfloop flow, removed 4 redundant places. [2023-09-01 07:51:27,736 INFO L231 Difference]: Finished difference. Result has 250 places, 1324 transitions, 30042 flow [2023-09-01 07:51:27,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=18720, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=968, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=698, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=30042, PETRI_PLACES=250, PETRI_TRANSITIONS=1324} [2023-09-01 07:51:27,737 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 208 predicate places. [2023-09-01 07:51:27,737 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 1324 transitions, 30042 flow [2023-09-01 07:51:27,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.52631578947368) internal successors, (1644), 19 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:51:27,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:51:27,738 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:51:27,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-09-01 07:51:27,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:51:27,938 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:51:27,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:51:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1964001879, now seen corresponding path program 1 times [2023-09-01 07:51:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:51:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797089866] [2023-09-01 07:51:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:51:27,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:51:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:51:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:51:28,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:51:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797089866] [2023-09-01 07:51:28,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797089866] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:51:28,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049143019] [2023-09-01 07:51:28,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:51:28,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:51:28,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:51:28,131 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:51:28,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 07:51:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:51:28,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:51:28,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:51:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:51:28,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:51:29,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:51:29,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049143019] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:51:29,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:51:29,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 07:51:29,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535604513] [2023-09-01 07:51:29,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:51:29,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 07:51:29,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:51:29,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 07:51:29,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-09-01 07:51:29,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 249 [2023-09-01 07:51:29,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 1324 transitions, 30042 flow. Second operand has 15 states, 15 states have (on average 89.86666666666666) internal successors, (1348), 15 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:51:29,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:51:29,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 249 [2023-09-01 07:51:29,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:51:56,332 INFO L130 PetriNetUnfolder]: 41499/69255 cut-off events. [2023-09-01 07:51:56,332 INFO L131 PetriNetUnfolder]: For 2162210/2162210 co-relation queries the response was YES. [2023-09-01 07:51:57,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460192 conditions, 69255 events. 41499/69255 cut-off events. For 2162210/2162210 co-relation queries the response was YES. Maximal size of possible extension queue 4287. Compared 643123 event pairs, 3019 based on Foata normal form. 1950/71189 useless extension candidates. Maximal degree in co-relation 460092. Up to 19547 conditions per place. [2023-09-01 07:51:58,092 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 1448 selfloop transitions, 758 changer transitions 0/2210 dead transitions. [2023-09-01 07:51:58,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 2210 transitions, 53380 flow [2023-09-01 07:51:58,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 07:51:58,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 07:51:58,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1945 transitions. [2023-09-01 07:51:58,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41111815683787784 [2023-09-01 07:51:58,096 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1945 transitions. [2023-09-01 07:51:58,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1945 transitions. [2023-09-01 07:51:58,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:51:58,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1945 transitions. [2023-09-01 07:51:58,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 102.36842105263158) internal successors, (1945), 19 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:51:58,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 249.0) internal successors, (4980), 20 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:51:58,104 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 249.0) internal successors, (4980), 20 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:51:58,104 INFO L175 Difference]: Start difference. First operand has 250 places, 1324 transitions, 30042 flow. Second operand 19 states and 1945 transitions. [2023-09-01 07:51:58,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 2210 transitions, 53380 flow [2023-09-01 07:52:55,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 2210 transitions, 47501 flow, removed 2857 selfloop flow, removed 8 redundant places. [2023-09-01 07:52:55,517 INFO L231 Difference]: Finished difference. Result has 270 places, 1605 transitions, 36440 flow [2023-09-01 07:52:55,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=24330, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=427, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=36440, PETRI_PLACES=270, PETRI_TRANSITIONS=1605} [2023-09-01 07:52:55,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 228 predicate places. [2023-09-01 07:52:55,519 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 1605 transitions, 36440 flow [2023-09-01 07:52:55,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 89.86666666666666) internal successors, (1348), 15 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:55,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:55,520 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:52:55,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 07:52:55,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 07:52:55,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:52:55,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:55,726 INFO L85 PathProgramCache]: Analyzing trace with hash 224585094, now seen corresponding path program 1 times [2023-09-01 07:52:55,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:55,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660831676] [2023-09-01 07:52:55,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:55,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:56,016 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:56,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660831676] [2023-09-01 07:52:56,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660831676] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:52:56,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693799523] [2023-09-01 07:52:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:56,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:52:56,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:52:56,019 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:52:56,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 07:52:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:56,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 07:52:56,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:52:56,526 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:56,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:52:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:58,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693799523] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:52:58,499 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:52:58,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 07:52:58,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341493897] [2023-09-01 07:52:58,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:52:58,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 07:52:58,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 07:52:58,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=234, Unknown=0, NotChecked=0, Total=380 [2023-09-01 07:52:58,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 249 [2023-09-01 07:52:58,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1605 transitions, 36440 flow. Second operand has 20 states, 20 states have (on average 89.5) internal successors, (1790), 20 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:58,585 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:58,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 249 [2023-09-01 07:52:58,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:39,190 INFO L130 PetriNetUnfolder]: 56755/93209 cut-off events. [2023-09-01 07:53:39,190 INFO L131 PetriNetUnfolder]: For 3150932/3150932 co-relation queries the response was YES. [2023-09-01 07:53:41,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 609810 conditions, 93209 events. 56755/93209 cut-off events. For 3150932/3150932 co-relation queries the response was YES. Maximal size of possible extension queue 5699. Compared 877130 event pairs, 2097 based on Foata normal form. 4112/97305 useless extension candidates. Maximal degree in co-relation 609700. Up to 29821 conditions per place. [2023-09-01 07:53:41,975 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 858 selfloop transitions, 1739 changer transitions 0/2601 dead transitions. [2023-09-01 07:53:41,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 2601 transitions, 61309 flow [2023-09-01 07:53:41,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 07:53:41,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 07:53:41,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3001 transitions. [2023-09-01 07:53:41,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017402945113788 [2023-09-01 07:53:41,979 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3001 transitions. [2023-09-01 07:53:41,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3001 transitions. [2023-09-01 07:53:41,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:41,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3001 transitions. [2023-09-01 07:53:41,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 100.03333333333333) internal successors, (3001), 30 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 249.0) internal successors, (7719), 31 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:41,991 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 249.0) internal successors, (7719), 31 states have internal predecessors, (7719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:41,991 INFO L175 Difference]: Start difference. First operand has 270 places, 1605 transitions, 36440 flow. Second operand 30 states and 3001 transitions. [2023-09-01 07:53:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 2601 transitions, 61309 flow [2023-09-01 07:55:21,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 2601 transitions, 60004 flow, removed 639 selfloop flow, removed 5 redundant places. [2023-09-01 07:55:21,786 INFO L231 Difference]: Finished difference. Result has 312 places, 2351 transitions, 60522 flow [2023-09-01 07:55:21,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=33938, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=60522, PETRI_PLACES=312, PETRI_TRANSITIONS=2351} [2023-09-01 07:55:21,788 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 270 predicate places. [2023-09-01 07:55:21,789 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 2351 transitions, 60522 flow [2023-09-01 07:55:21,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 89.5) internal successors, (1790), 20 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:55:21,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:55:21,789 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:55:21,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 07:55:22,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 07:55:22,002 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 07:55:22,002 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:55:22,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1940308919, now seen corresponding path program 2 times [2023-09-01 07:55:22,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:55:22,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911957408] [2023-09-01 07:55:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:55:22,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:55:22,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:55:22,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:55:22,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:55:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911957408] [2023-09-01 07:55:22,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911957408] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:55:22,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560555799] [2023-09-01 07:55:22,265 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:55:22,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:55:22,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:55:22,266 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:55:22,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 07:55:22,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:55:22,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:55:22,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 07:55:22,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:55:22,815 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:55:22,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:55:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:55:24,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560555799] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:55:24,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:55:24,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 17 [2023-09-01 07:55:24,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027436402] [2023-09-01 07:55:24,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:55:24,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 07:55:24,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:55:24,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 07:55:24,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2023-09-01 07:55:24,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 249 [2023-09-01 07:55:24,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 2351 transitions, 60522 flow. Second operand has 19 states, 19 states have (on average 89.57894736842105) internal successors, (1702), 19 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:55:24,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:55:24,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 249 [2023-09-01 07:55:24,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:38,633 INFO L130 PetriNetUnfolder]: 72287/119703 cut-off events. [2023-09-01 07:56:38,634 INFO L131 PetriNetUnfolder]: For 5099136/5099136 co-relation queries the response was YES. [2023-09-01 07:56:42,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872125 conditions, 119703 events. 72287/119703 cut-off events. For 5099136/5099136 co-relation queries the response was YES. Maximal size of possible extension queue 6966. Compared 1173926 event pairs, 3787 based on Foata normal form. 3428/123115 useless extension candidates. Maximal degree in co-relation 871996. Up to 25569 conditions per place. [2023-09-01 07:56:42,784 INFO L137 encePairwiseOnDemand]: 240/249 looper letters, 1906 selfloop transitions, 1962 changer transitions 0/3872 dead transitions. [2023-09-01 07:56:42,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 3872 transitions, 105991 flow [2023-09-01 07:56:42,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-09-01 07:56:42,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-09-01 07:56:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3408 transitions. [2023-09-01 07:56:42,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025513819985826 [2023-09-01 07:56:42,788 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3408 transitions. [2023-09-01 07:56:42,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3408 transitions. [2023-09-01 07:56:42,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:42,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3408 transitions. [2023-09-01 07:56:42,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 100.23529411764706) internal successors, (3408), 34 states have internal predecessors, (3408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:42,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 249.0) internal successors, (8715), 35 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:42,801 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 249.0) internal successors, (8715), 35 states have internal predecessors, (8715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:42,801 INFO L175 Difference]: Start difference. First operand has 312 places, 2351 transitions, 60522 flow. Second operand 34 states and 3408 transitions. [2023-09-01 07:56:42,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 3872 transitions, 105991 flow [2023-09-01 08:00:42,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 3872 transitions, 100198 flow, removed 2306 selfloop flow, removed 7 redundant places. [2023-09-01 08:00:42,546 INFO L231 Difference]: Finished difference. Result has 351 places, 3103 transitions, 86741 flow [2023-09-01 08:00:42,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=249, PETRI_DIFFERENCE_MINUEND_FLOW=51806, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=86741, PETRI_PLACES=351, PETRI_TRANSITIONS=3103} [2023-09-01 08:00:42,549 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 309 predicate places. [2023-09-01 08:00:42,549 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 3103 transitions, 86741 flow [2023-09-01 08:00:42,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 89.57894736842105) internal successors, (1702), 19 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:00:42,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:00:42,550 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:00:42,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-09-01 08:00:42,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:00:42,759 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-09-01 08:00:42,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:00:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1548000516, now seen corresponding path program 2 times [2023-09-01 08:00:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:00:42,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710584909] [2023-09-01 08:00:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:00:42,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:00:42,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:00:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:00:43,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:00:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710584909] [2023-09-01 08:00:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710584909] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:00:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97408585] [2023-09-01 08:00:43,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:00:43,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:00:43,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:00:43,333 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:00:43,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 08:00:43,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:00:43,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:00:43,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 08:00:43,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:00:43,912 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:00:43,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:00:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:00:46,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97408585] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:00:46,750 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:00:46,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-09-01 08:00:46,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157615618] [2023-09-01 08:00:46,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:00:46,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 08:00:46,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:00:46,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 08:00:46,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=289, Unknown=0, NotChecked=0, Total=462 [2023-09-01 08:00:46,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 249 [2023-09-01 08:00:46,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 3103 transitions, 86741 flow. Second operand has 22 states, 22 states have (on average 89.45454545454545) internal successors, (1968), 22 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:00:46,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:00:46,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 249 [2023-09-01 08:00:46,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15