./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.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 ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:45:46,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:45:46,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:45:46,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:45:46,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:45:46,958 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:45:46,960 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:45:46,963 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:45:46,965 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:45:46,970 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:45:46,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:45:46,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:45:46,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:45:46,975 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:45:46,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:45:46,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:45:46,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:45:46,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:45:46,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:45:46,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:45:47,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:45:47,002 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:45:47,003 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:45:47,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:45:47,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:45:47,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:45:47,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:45:47,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:45:47,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:45:47,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:45:47,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:45:47,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:45:47,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:45:47,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:45:47,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:45:47,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:45:47,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:45:47,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:45:47,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:45:47,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:45:47,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:45:47,023 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:45:47,056 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:45:47,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:45:47,058 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:45:47,058 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:45:47,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:45:47,059 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:45:47,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:45:47,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:45:47,060 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:45:47,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:45:47,061 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:45:47,061 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:45:47,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:45:47,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:45:47,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:45:47,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:45:47,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:45:47,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:45:47,062 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:45:47,063 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:45:47,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:45:47,063 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:45:47,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:45:47,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:45:47,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:45:47,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:45:47,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:45:47,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:45:47,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:45:47,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:45:47,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:45:47,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:45:47,065 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:45:47,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:45:47,066 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:45:47,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:45:47,066 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:45:47,066 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec11f673f0852354e1b011c47ea1690182c02849435cfe6b9232c63dc6ffceb8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:45:47,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:45:47,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:45:47,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:45:47,412 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:45:47,414 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:45:47,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-30 15:45:48,535 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:45:48,753 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:45:48,754 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-30 15:45:48,761 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b47c423e/6b0c47a2760f4a35b691a9cd493a0682/FLAG46b221b03 [2023-08-30 15:45:48,783 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b47c423e/6b0c47a2760f4a35b691a9cd493a0682 [2023-08-30 15:45:48,786 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:45:48,787 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:45:48,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:45:48,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:45:48,793 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:45:48,794 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:45:48" (1/1) ... [2023-08-30 15:45:48,795 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cf602a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:48, skipping insertion in model container [2023-08-30 15:45:48,796 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:45:48" (1/1) ... [2023-08-30 15:45:48,801 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:45:48,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:45:49,010 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-08-30 15:45:49,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:45:49,027 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:45:49,066 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-08-30 15:45:49,069 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:45:49,076 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:45:49,078 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:45:49,083 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:45:49,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49 WrapperNode [2023-08-30 15:45:49,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:45:49,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:45:49,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:45:49,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:45:49,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,140 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 145 [2023-08-30 15:45:49,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:45:49,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:45:49,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:45:49,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:45:49,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,151 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,173 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:45:49,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:45:49,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:45:49,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:45:49,195 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (1/1) ... [2023-08-30 15:45:49,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:45:49,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:45:49,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 15:45:49,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 15:45:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:45:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:45:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:45:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:45:49,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:45:49,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:45:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:45:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 15:45:49,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 15:45:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:45:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:45:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:45:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:45:49,259 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:45:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:45:49,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:45:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:45:49,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:45:49,261 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 15:45:49,392 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:45:49,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:45:49,731 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:45:49,871 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:45:49,871 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 15:45:49,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:45:49 BoogieIcfgContainer [2023-08-30 15:45:49,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:45:49,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:45:49,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:45:49,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:45:49,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:45:48" (1/3) ... [2023-08-30 15:45:49,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6567c3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:45:49, skipping insertion in model container [2023-08-30 15:45:49,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:45:49" (2/3) ... [2023-08-30 15:45:49,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6567c3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:45:49, skipping insertion in model container [2023-08-30 15:45:49,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:45:49" (3/3) ... [2023-08-30 15:45:49,881 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-30 15:45:49,888 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:45:49,896 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:45:49,896 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 15:45:49,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:45:49,998 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 15:45:50,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2023-08-30 15:45:50,092 INFO L130 PetriNetUnfolder]: 10/138 cut-off events. [2023-08-30 15:45:50,093 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 15:45:50,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 125 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-30 15:45:50,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2023-08-30 15:45:50,102 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 118 transitions, 257 flow [2023-08-30 15:45:50,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:45:50,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 118 transitions, 257 flow [2023-08-30 15:45:50,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 118 transitions, 257 flow [2023-08-30 15:45:50,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 118 transitions, 257 flow [2023-08-30 15:45:50,139 INFO L130 PetriNetUnfolder]: 9/118 cut-off events. [2023-08-30 15:45:50,140 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:45:50,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 118 events. 9/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 122 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-30 15:45:50,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-30 15:45:54,908 INFO L134 LiptonReduction]: Checked pairs total: 3120 [2023-08-30 15:45:54,908 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-30 15:45:54,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:45:54,926 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;@2b6d989c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:45:54,926 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-08-30 15:45:54,928 INFO L130 PetriNetUnfolder]: 1/3 cut-off events. [2023-08-30 15:45:54,929 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:45:54,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:45:54,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:45:54,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:45:54,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:45:54,934 INFO L85 PathProgramCache]: Analyzing trace with hash 628002, now seen corresponding path program 1 times [2023-08-30 15:45:54,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:45:54,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403081921] [2023-08-30 15:45:54,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:54,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:45:55,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:45:55,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:45:55,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403081921] [2023-08-30 15:45:55,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403081921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:45:55,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:45:55,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:45:55,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701554548] [2023-08-30 15:45:55,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:45:55,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:45:55,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:45:55,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:45:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:45:55,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:45:55,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:55,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:45:55,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:45:55,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:45:56,300 INFO L130 PetriNetUnfolder]: 8857/11548 cut-off events. [2023-08-30 15:45:56,300 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-08-30 15:45:56,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23763 conditions, 11548 events. 8857/11548 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 53280 event pairs, 2817 based on Foata normal form. 0/3638 useless extension candidates. Maximal degree in co-relation 21576. Up to 11343 conditions per place. [2023-08-30 15:45:56,371 INFO L137 encePairwiseOnDemand]: 225/246 looper letters, 51 selfloop transitions, 7 changer transitions 2/60 dead transitions. [2023-08-30 15:45:56,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 279 flow [2023-08-30 15:45:56,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:45:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:45:56,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 394 transitions. [2023-08-30 15:45:56,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338753387533876 [2023-08-30 15:45:56,383 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 394 transitions. [2023-08-30 15:45:56,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 394 transitions. [2023-08-30 15:45:56,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:45:56,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 394 transitions. [2023-08-30 15:45:56,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:56,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:56,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:56,396 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 99 flow. Second operand 3 states and 394 transitions. [2023-08-30 15:45:56,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 279 flow [2023-08-30 15:45:56,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-08-30 15:45:56,406 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 151 flow [2023-08-30 15:45:56,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-30 15:45:56,411 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -6 predicate places. [2023-08-30 15:45:56,411 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 151 flow [2023-08-30 15:45:56,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:56,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:45:56,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:45:56,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:45:56,412 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:45:56,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:45:56,413 INFO L85 PathProgramCache]: Analyzing trace with hash 19468720, now seen corresponding path program 1 times [2023-08-30 15:45:56,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:45:56,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771262467] [2023-08-30 15:45:56,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:56,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:45:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:56,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:45:56,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:45:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771262467] [2023-08-30 15:45:56,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771262467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:45:56,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083500067] [2023-08-30 15:45:56,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:56,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:45:56,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:45:56,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:45:56,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 15:45:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:56,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:45:56,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:45:56,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:45:56,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:45:56,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:45:56,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083500067] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:45:56,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:45:56,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 4 [2023-08-30 15:45:56,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603275470] [2023-08-30 15:45:56,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:45:56,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 15:45:56,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:45:56,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 15:45:56,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 15:45:56,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:45:56,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:45:56,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:45:56,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:45:56,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:45:59,715 INFO L130 PetriNetUnfolder]: 34367/44442 cut-off events. [2023-08-30 15:45:59,715 INFO L131 PetriNetUnfolder]: For 2405/2405 co-relation queries the response was YES. [2023-08-30 15:45:59,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120980 conditions, 44442 events. 34367/44442 cut-off events. For 2405/2405 co-relation queries the response was YES. Maximal size of possible extension queue 2138. Compared 238022 event pairs, 7837 based on Foata normal form. 0/21114 useless extension candidates. Maximal degree in co-relation 57652. Up to 30473 conditions per place. [2023-08-30 15:46:00,070 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 168 selfloop transitions, 10 changer transitions 0/178 dead transitions. [2023-08-30 15:46:00,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 178 transitions, 938 flow [2023-08-30 15:46:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:46:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:46:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 813 transitions. [2023-08-30 15:46:00,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508130081300813 [2023-08-30 15:46:00,075 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 813 transitions. [2023-08-30 15:46:00,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 813 transitions. [2023-08-30 15:46:00,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:00,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 813 transitions. [2023-08-30 15:46:00,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:00,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:00,083 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 246.0) internal successors, (1722), 7 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:00,083 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 151 flow. Second operand 6 states and 813 transitions. [2023-08-30 15:46:00,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 178 transitions, 938 flow [2023-08-30 15:46:00,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 178 transitions, 932 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:46:00,087 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 221 flow [2023-08-30 15:46:00,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=221, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2023-08-30 15:46:00,088 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-30 15:46:00,089 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 221 flow [2023-08-30 15:46:00,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.33333333333333) internal successors, (644), 6 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:00,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:00,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:46:00,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 15:46:00,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:46:00,295 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:00,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:00,296 INFO L85 PathProgramCache]: Analyzing trace with hash 19468719, now seen corresponding path program 1 times [2023-08-30 15:46:00,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:00,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189529035] [2023-08-30 15:46:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:00,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:00,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:00,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189529035] [2023-08-30 15:46:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189529035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:46:00,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:46:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:46:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279400043] [2023-08-30 15:46:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:46:00,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:46:00,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:46:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 15:46:00,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:46:00,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:00,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:00,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:46:00,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:02,603 INFO L130 PetriNetUnfolder]: 31609/41312 cut-off events. [2023-08-30 15:46:02,603 INFO L131 PetriNetUnfolder]: For 14262/14262 co-relation queries the response was YES. [2023-08-30 15:46:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116649 conditions, 41312 events. 31609/41312 cut-off events. For 14262/14262 co-relation queries the response was YES. Maximal size of possible extension queue 1954. Compared 220847 event pairs, 17393 based on Foata normal form. 1878/24602 useless extension candidates. Maximal degree in co-relation 64951. Up to 33598 conditions per place. [2023-08-30 15:46:02,858 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 73 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-30 15:46:02,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 76 transitions, 433 flow [2023-08-30 15:46:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:46:02,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:46:02,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 495 transitions. [2023-08-30 15:46:02,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030487804878049 [2023-08-30 15:46:02,861 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 495 transitions. [2023-08-30 15:46:02,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 495 transitions. [2023-08-30 15:46:02,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:02,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 495 transitions. [2023-08-30 15:46:02,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.75) internal successors, (495), 4 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:02,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:02,866 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:02,866 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 221 flow. Second operand 4 states and 495 transitions. [2023-08-30 15:46:02,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 76 transitions, 433 flow [2023-08-30 15:46:02,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 15:46:02,882 INFO L231 Difference]: Finished difference. Result has 52 places, 44 transitions, 186 flow [2023-08-30 15:46:02,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=52, PETRI_TRANSITIONS=44} [2023-08-30 15:46:02,883 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 4 predicate places. [2023-08-30 15:46:02,884 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 44 transitions, 186 flow [2023-08-30 15:46:02,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 107.0) internal successors, (428), 4 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:02,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:02,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:46:02,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 15:46:02,885 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:02,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:02,885 INFO L85 PathProgramCache]: Analyzing trace with hash 19468718, now seen corresponding path program 1 times [2023-08-30 15:46:02,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:02,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503135076] [2023-08-30 15:46:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:02,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:02,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:02,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503135076] [2023-08-30 15:46:02,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503135076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:46:02,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439547005] [2023-08-30 15:46:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:02,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:46:02,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:46:02,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:46:02,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 15:46:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:03,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:46:03,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:46:03,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:03,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:46:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:03,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439547005] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:46:03,051 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:46:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:46:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216839147] [2023-08-30 15:46:03,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:46:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:46:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:46:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:46:03,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:46:03,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:03,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:03,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:46:03,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:08,961 INFO L130 PetriNetUnfolder]: 79173/108458 cut-off events. [2023-08-30 15:46:08,961 INFO L131 PetriNetUnfolder]: For 34471/34471 co-relation queries the response was YES. [2023-08-30 15:46:09,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303504 conditions, 108458 events. 79173/108458 cut-off events. For 34471/34471 co-relation queries the response was YES. Maximal size of possible extension queue 5083. Compared 747825 event pairs, 10227 based on Foata normal form. 4092/73486 useless extension candidates. Maximal degree in co-relation 159600. Up to 65395 conditions per place. [2023-08-30 15:46:09,582 INFO L137 encePairwiseOnDemand]: 228/246 looper letters, 128 selfloop transitions, 70 changer transitions 0/198 dead transitions. [2023-08-30 15:46:09,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 198 transitions, 1201 flow [2023-08-30 15:46:09,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 15:46:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 15:46:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 946 transitions. [2023-08-30 15:46:09,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5493612078977933 [2023-08-30 15:46:09,586 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 946 transitions. [2023-08-30 15:46:09,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 946 transitions. [2023-08-30 15:46:09,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:09,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 946 transitions. [2023-08-30 15:46:09,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 135.14285714285714) internal successors, (946), 7 states have internal predecessors, (946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:09,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 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) [2023-08-30 15:46:09,593 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 246.0) internal successors, (1968), 8 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) [2023-08-30 15:46:09,593 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 186 flow. Second operand 7 states and 946 transitions. [2023-08-30 15:46:09,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 198 transitions, 1201 flow [2023-08-30 15:46:09,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 198 transitions, 1192 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 15:46:09,676 INFO L231 Difference]: Finished difference. Result has 61 places, 109 transitions, 950 flow [2023-08-30 15:46:09,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=950, PETRI_PLACES=61, PETRI_TRANSITIONS=109} [2023-08-30 15:46:09,677 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-08-30 15:46:09,677 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 109 transitions, 950 flow [2023-08-30 15:46:09,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.57142857142857) internal successors, (753), 7 states have internal predecessors, (753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:09,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:09,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 15:46:09,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 15:46:09,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 15:46:09,883 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:09,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:09,883 INFO L85 PathProgramCache]: Analyzing trace with hash 19468717, now seen corresponding path program 1 times [2023-08-30 15:46:09,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:09,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720562680] [2023-08-30 15:46:09,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:09,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:09,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:09,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:09,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720562680] [2023-08-30 15:46:09,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720562680] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:46:09,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:46:09,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:46:09,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749982473] [2023-08-30 15:46:09,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:46:09,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:46:09,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:09,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:46:09,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:46:09,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:46:09,915 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 109 transitions, 950 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:09,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:09,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:46:09,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:14,099 INFO L130 PetriNetUnfolder]: 51043/68174 cut-off events. [2023-08-30 15:46:14,099 INFO L131 PetriNetUnfolder]: For 147364/147364 co-relation queries the response was YES. [2023-08-30 15:46:14,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303284 conditions, 68174 events. 51043/68174 cut-off events. For 147364/147364 co-relation queries the response was YES. Maximal size of possible extension queue 3018. Compared 402118 event pairs, 32031 based on Foata normal form. 7166/55916 useless extension candidates. Maximal degree in co-relation 245592. Up to 68174 conditions per place. [2023-08-30 15:46:14,561 INFO L137 encePairwiseOnDemand]: 243/246 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-30 15:46:14,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 90 transitions, 958 flow [2023-08-30 15:46:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:46:14,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:46:14,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2023-08-30 15:46:14,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4796747967479675 [2023-08-30 15:46:14,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 354 transitions. [2023-08-30 15:46:14,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 354 transitions. [2023-08-30 15:46:14,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:14,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 354 transitions. [2023-08-30 15:46:14,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:14,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:14,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:14,566 INFO L175 Difference]: Start difference. First operand has 61 places, 109 transitions, 950 flow. Second operand 3 states and 354 transitions. [2023-08-30 15:46:14,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 90 transitions, 958 flow [2023-08-30 15:46:15,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 878 flow, removed 40 selfloop flow, removed 1 redundant places. [2023-08-30 15:46:15,940 INFO L231 Difference]: Finished difference. Result has 59 places, 90 transitions, 700 flow [2023-08-30 15:46:15,940 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=700, PETRI_PLACES=59, PETRI_TRANSITIONS=90} [2023-08-30 15:46:15,941 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 11 predicate places. [2023-08-30 15:46:15,941 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 90 transitions, 700 flow [2023-08-30 15:46:15,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:15,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:15,942 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:46:15,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:46:15,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:15,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:15,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1529643427, now seen corresponding path program 1 times [2023-08-30 15:46:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:15,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006393136] [2023-08-30 15:46:15,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:15,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:15,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:15,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:15,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006393136] [2023-08-30 15:46:15,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006393136] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:46:15,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:46:15,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:46:15,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412706155] [2023-08-30 15:46:15,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:46:15,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:46:15,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:15,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:46:16,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:46:16,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:46:16,005 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 90 transitions, 700 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:16,005 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:16,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:46:16,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:22,239 INFO L130 PetriNetUnfolder]: 78213/104434 cut-off events. [2023-08-30 15:46:22,239 INFO L131 PetriNetUnfolder]: For 130979/130979 co-relation queries the response was YES. [2023-08-30 15:46:22,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417681 conditions, 104434 events. 78213/104434 cut-off events. For 130979/130979 co-relation queries the response was YES. Maximal size of possible extension queue 4500. Compared 664361 event pairs, 20641 based on Foata normal form. 0/77738 useless extension candidates. Maximal degree in co-relation 417661. Up to 70613 conditions per place. [2023-08-30 15:46:22,898 INFO L137 encePairwiseOnDemand]: 242/246 looper letters, 162 selfloop transitions, 4 changer transitions 0/166 dead transitions. [2023-08-30 15:46:22,898 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 166 transitions, 1631 flow [2023-08-30 15:46:22,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:46:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:46:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-08-30 15:46:22,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176151761517616 [2023-08-30 15:46:22,900 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-08-30 15:46:22,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-08-30 15:46:22,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:22,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-08-30 15:46:22,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:22,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:22,903 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:22,903 INFO L175 Difference]: Start difference. First operand has 59 places, 90 transitions, 700 flow. Second operand 3 states and 382 transitions. [2023-08-30 15:46:22,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 166 transitions, 1631 flow [2023-08-30 15:46:24,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 166 transitions, 1630 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:46:24,295 INFO L231 Difference]: Finished difference. Result has 61 places, 93 transitions, 751 flow [2023-08-30 15:46:24,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=751, PETRI_PLACES=61, PETRI_TRANSITIONS=93} [2023-08-30 15:46:24,298 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 13 predicate places. [2023-08-30 15:46:24,298 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 93 transitions, 751 flow [2023-08-30 15:46:24,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:24,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:24,298 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:46:24,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:46:24,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:24,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:24,299 INFO L85 PathProgramCache]: Analyzing trace with hash 172613605, now seen corresponding path program 2 times [2023-08-30 15:46:24,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:24,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813743582] [2023-08-30 15:46:24,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:24,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:24,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:24,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813743582] [2023-08-30 15:46:24,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813743582] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:46:24,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1912719534] [2023-08-30 15:46:24,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:46:24,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:46:24,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:46:24,376 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:46:24,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 15:46:24,449 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:46:24,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:46:24,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-30 15:46:24,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:46:24,495 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 15:46:24,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:46:24,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1912719534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:46:24,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:46:24,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:46:24,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253239764] [2023-08-30 15:46:24,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:46:24,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:46:24,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:46:24,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:46:24,503 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 246 [2023-08-30 15:46:24,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 93 transitions, 751 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:24,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:24,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 246 [2023-08-30 15:46:24,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:30,477 INFO L130 PetriNetUnfolder]: 73705/98500 cut-off events. [2023-08-30 15:46:30,477 INFO L131 PetriNetUnfolder]: For 175994/175994 co-relation queries the response was YES. [2023-08-30 15:46:30,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402498 conditions, 98500 events. 73705/98500 cut-off events. For 175994/175994 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 609105 event pairs, 47991 based on Foata normal form. 1426/74694 useless extension candidates. Maximal degree in co-relation 402476. Up to 98500 conditions per place. [2023-08-30 15:46:31,340 INFO L137 encePairwiseOnDemand]: 244/246 looper letters, 87 selfloop transitions, 1 changer transitions 0/88 dead transitions. [2023-08-30 15:46:31,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 88 transitions, 854 flow [2023-08-30 15:46:31,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:46:31,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:46:31,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-30 15:46:31,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47289972899729 [2023-08-30 15:46:31,342 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-30 15:46:31,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-30 15:46:31,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:31,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-30 15:46:31,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:31,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:31,345 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:31,345 INFO L175 Difference]: Start difference. First operand has 61 places, 93 transitions, 751 flow. Second operand 3 states and 349 transitions. [2023-08-30 15:46:31,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 88 transitions, 854 flow [2023-08-30 15:46:31,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 88 transitions, 812 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 15:46:32,000 INFO L231 Difference]: Finished difference. Result has 57 places, 88 transitions, 638 flow [2023-08-30 15:46:32,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=636, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=638, PETRI_PLACES=57, PETRI_TRANSITIONS=88} [2023-08-30 15:46:32,001 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-30 15:46:32,001 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 88 transitions, 638 flow [2023-08-30 15:46:32,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:32,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:32,001 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-30 15:46:32,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:46:32,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:46:32,206 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:32,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:32,206 INFO L85 PathProgramCache]: Analyzing trace with hash 172613603, now seen corresponding path program 2 times [2023-08-30 15:46:32,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:32,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790253098] [2023-08-30 15:46:32,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:32,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:32,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790253098] [2023-08-30 15:46:32,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790253098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:46:32,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392674004] [2023-08-30 15:46:32,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:46:32,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:46:32,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:46:32,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:46:32,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 15:46:32,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 15:46:32,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:46:32,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-30 15:46:32,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:46:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:32,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:46:32,442 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:32,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392674004] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:46:32,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:46:32,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-30 15:46:32,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169704360] [2023-08-30 15:46:32,443 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:46:32,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 15:46:32,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:32,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 15:46:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-30 15:46:32,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:46:32,459 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 88 transitions, 638 flow. Second operand has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:32,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:32,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:46:32,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:50,734 INFO L130 PetriNetUnfolder]: 225857/302332 cut-off events. [2023-08-30 15:46:50,735 INFO L131 PetriNetUnfolder]: For 761151/761151 co-relation queries the response was YES. [2023-08-30 15:46:51,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1174847 conditions, 302332 events. 225857/302332 cut-off events. For 761151/761151 co-relation queries the response was YES. Maximal size of possible extension queue 9488. Compared 2104718 event pairs, 21345 based on Foata normal form. 43700/262448 useless extension candidates. Maximal degree in co-relation 1174828. Up to 132229 conditions per place. [2023-08-30 15:46:52,713 INFO L137 encePairwiseOnDemand]: 231/246 looper letters, 214 selfloop transitions, 233 changer transitions 0/447 dead transitions. [2023-08-30 15:46:52,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 447 transitions, 3586 flow [2023-08-30 15:46:52,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 15:46:52,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 15:46:52,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1615 transitions. [2023-08-30 15:46:52,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470867208672087 [2023-08-30 15:46:52,717 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1615 transitions. [2023-08-30 15:46:52,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1615 transitions. [2023-08-30 15:46:52,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:46:52,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1615 transitions. [2023-08-30 15:46:52,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 134.58333333333334) internal successors, (1615), 12 states have internal predecessors, (1615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:52,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:52,725 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 246.0) internal successors, (3198), 13 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:52,726 INFO L175 Difference]: Start difference. First operand has 57 places, 88 transitions, 638 flow. Second operand 12 states and 1615 transitions. [2023-08-30 15:46:52,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 447 transitions, 3586 flow [2023-08-30 15:46:54,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 447 transitions, 3585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 15:46:54,381 INFO L231 Difference]: Finished difference. Result has 77 places, 277 transitions, 3328 flow [2023-08-30 15:46:54,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3328, PETRI_PLACES=77, PETRI_TRANSITIONS=277} [2023-08-30 15:46:54,382 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 29 predicate places. [2023-08-30 15:46:54,382 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 277 transitions, 3328 flow [2023-08-30 15:46:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 107.3076923076923) internal successors, (1395), 13 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:46:54,383 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:46:54,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:46:54,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 15:46:54,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:46:54,587 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:46:54,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:46:54,588 INFO L85 PathProgramCache]: Analyzing trace with hash 225126105, now seen corresponding path program 1 times [2023-08-30 15:46:54,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:46:54,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608882486] [2023-08-30 15:46:54,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:46:54,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:46:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:46:54,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:46:54,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:46:54,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608882486] [2023-08-30 15:46:54,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608882486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:46:54,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:46:54,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:46:54,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096784371] [2023-08-30 15:46:54,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:46:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:46:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:54,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:46:54,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:46:54,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:46:54,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 277 transitions, 3328 flow. Second operand has 3 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) [2023-08-30 15:46:54,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:54,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:46:54,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:47:14,140 INFO L130 PetriNetUnfolder]: 171649/230064 cut-off events. [2023-08-30 15:47:14,140 INFO L131 PetriNetUnfolder]: For 795545/795545 co-relation queries the response was YES. [2023-08-30 15:47:15,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169764 conditions, 230064 events. 171649/230064 cut-off events. For 795545/795545 co-relation queries the response was YES. Maximal size of possible extension queue 7310. Compared 1550576 event pairs, 94207 based on Foata normal form. 0/175948 useless extension candidates. Maximal degree in co-relation 1169734. Up to 230064 conditions per place. [2023-08-30 15:47:16,218 INFO L137 encePairwiseOnDemand]: 244/246 looper letters, 256 selfloop transitions, 1 changer transitions 0/257 dead transitions. [2023-08-30 15:47:16,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 257 transitions, 3638 flow [2023-08-30 15:47:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:47:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:47:16,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-30 15:47:16,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47560975609756095 [2023-08-30 15:47:16,220 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-30 15:47:16,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-30 15:47:16,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:47:16,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-30 15:47:16,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:47:16,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:47:16,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 15:47:16,223 INFO L175 Difference]: Start difference. First operand has 77 places, 277 transitions, 3328 flow. Second operand 3 states and 351 transitions. [2023-08-30 15:47:16,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 257 transitions, 3638 flow [2023-08-30 15:47:33,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 257 transitions, 2938 flow, removed 350 selfloop flow, removed 0 redundant places. [2023-08-30 15:47:33,512 INFO L231 Difference]: Finished difference. Result has 78 places, 257 transitions, 2426 flow [2023-08-30 15:47:33,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=2424, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2426, PETRI_PLACES=78, PETRI_TRANSITIONS=257} [2023-08-30 15:47:33,513 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 30 predicate places. [2023-08-30 15:47:33,513 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 257 transitions, 2426 flow [2023-08-30 15:47:33,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 15:47:33,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:47:33,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:47:33,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 15:47:33,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-08-30 15:47:33,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:47:33,514 INFO L85 PathProgramCache]: Analyzing trace with hash 225126106, now seen corresponding path program 1 times [2023-08-30 15:47:33,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:47:33,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277944910] [2023-08-30 15:47:33,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:47:33,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:47:33,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:47:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 15:47:33,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:47:33,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277944910] [2023-08-30 15:47:33,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277944910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:47:33,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:47:33,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:47:33,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318815575] [2023-08-30 15:47:33,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:47:33,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:47:33,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:47:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:47:33,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:47:33,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 246 [2023-08-30 15:47:33,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 257 transitions, 2426 flow. Second operand has 3 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) [2023-08-30 15:47:33,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:47:33,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 246 [2023-08-30 15:47:33,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand