./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.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 d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:52:05,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:52:05,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:52:05,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:52:05,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:52:05,986 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:52:05,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:52:05,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:52:05,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:52:05,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:52:05,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:52:05,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:52:05,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:52:06,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:52:06,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:52:06,005 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:52:06,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:52:06,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:52:06,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:52:06,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:52:06,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:52:06,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:52:06,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:52:06,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:52:06,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:52:06,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:52:06,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:52:06,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:52:06,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:52:06,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:52:06,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:52:06,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:52:06,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:52:06,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:52:06,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:52:06,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:52:06,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:52:06,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:52:06,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:52:06,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:52:06,028 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:52:06,029 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:52:06,054 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:52:06,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:52:06,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:52:06,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:52:06,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:52:06,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:52:06,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:52:06,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:52:06,057 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:52:06,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:52:06,058 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:52:06,058 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:52:06,059 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:52:06,060 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:52:06,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:52:06,060 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:52:06,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:52:06,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:52:06,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:52:06,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:52:06,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:52:06,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:52:06,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:52:06,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:52:06,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:52:06,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:52:06,062 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:52:06,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:52:06,062 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:52:06,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:52:06,062 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:52:06,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d721a74d879c75d156b7dfbd9383140c70ef6831602ea84a0f8988cd7fdc0c32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:52:06,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:52:06,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:52:06,361 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:52:06,362 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:52:06,362 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:52:06,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-09-01 07:52:07,501 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:52:07,707 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:52:07,713 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-09-01 07:52:07,721 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046d2d764/82d899326bcd45f69ab7f91da35d4a29/FLAGd4c767b0b [2023-09-01 07:52:07,732 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/046d2d764/82d899326bcd45f69ab7f91da35d4a29 [2023-09-01 07:52:07,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:52:07,735 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:52:07,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:52:07,736 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:52:07,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:52:07,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:07,741 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd0e3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07, skipping insertion in model container [2023-09-01 07:52:07,741 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:07,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:52:07,761 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:52:07,885 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-09-01 07:52:07,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:52:07,901 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:52:07,933 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-09-01 07:52:07,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:52:07,959 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:52:07,960 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:52:07,974 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:52:07,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07 WrapperNode [2023-09-01 07:52:07,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:52:07,976 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:52:07,976 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:52:07,976 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:52:07,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:07,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,008 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 309 [2023-09-01 07:52:08,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:52:08,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:52:08,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:52:08,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:52:08,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,034 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:52:08,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:52:08,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:52:08,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:52:08,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (1/1) ... [2023-09-01 07:52:08,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:52:08,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:52:08,079 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:52:08,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:52:08,129 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:52:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:52:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:52:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:52:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:52:08,130 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:52:08,130 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:52:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:52:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:52:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:52:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 07:52:08,131 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 07:52:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:52:08,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:52:08,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:52:08,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:52:08,133 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:52:08,221 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:52:08,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:52:08,686 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:52:08,950 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:52:08,951 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 07:52:08,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:52:08 BoogieIcfgContainer [2023-09-01 07:52:08,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:52:08,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:52:08,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:52:08,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:52:08,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:52:07" (1/3) ... [2023-09-01 07:52:08,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de2630b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:52:08, skipping insertion in model container [2023-09-01 07:52:08,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:52:07" (2/3) ... [2023-09-01 07:52:08,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de2630b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:52:08, skipping insertion in model container [2023-09-01 07:52:08,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:52:08" (3/3) ... [2023-09-01 07:52:08,959 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-09-01 07:52:08,965 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:52:08,970 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:52:08,971 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-09-01 07:52:08,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:52:09,097 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 07:52:09,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 236 transitions, 516 flow [2023-09-01 07:52:09,225 INFO L130 PetriNetUnfolder]: 14/221 cut-off events. [2023-09-01 07:52:09,226 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 07:52:09,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 221 events. 14/221 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-09-01 07:52:09,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 236 transitions, 516 flow [2023-09-01 07:52:09,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 205 transitions, 437 flow [2023-09-01 07:52:09,242 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:52:09,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 205 transitions, 437 flow [2023-09-01 07:52:09,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 205 transitions, 437 flow [2023-09-01 07:52:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 205 transitions, 437 flow [2023-09-01 07:52:09,285 INFO L130 PetriNetUnfolder]: 13/205 cut-off events. [2023-09-01 07:52:09,285 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:52:09,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 205 events. 13/205 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 322 event pairs, 0 based on Foata normal form. 0/164 useless extension candidates. Maximal degree in co-relation 188. Up to 3 conditions per place. [2023-09-01 07:52:09,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 5456 [2023-09-01 07:52:16,604 INFO L134 LiptonReduction]: Checked pairs total: 22240 [2023-09-01 07:52:16,604 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-09-01 07:52:16,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:52:16,622 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;@6c2f1b24, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:52:16,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 58 error locations. [2023-09-01 07:52:16,636 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 07:52:16,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:52:16,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:16,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 07:52:16,637 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:16,641 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1306, now seen corresponding path program 1 times [2023-09-01 07:52:16,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:16,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670206851] [2023-09-01 07:52:16,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:16,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:16,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:16,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670206851] [2023-09-01 07:52:16,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670206851] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:16,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:52:16,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 07:52:16,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656124718] [2023-09-01 07:52:16,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:16,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 07:52:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 07:52:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 07:52:16,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 429 [2023-09-01 07:52:16,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 157 flow. Second operand has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:16,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:16,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 429 [2023-09-01 07:52:16,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:18,670 INFO L130 PetriNetUnfolder]: 11217/15499 cut-off events. [2023-09-01 07:52:18,671 INFO L131 PetriNetUnfolder]: For 802/802 co-relation queries the response was YES. [2023-09-01 07:52:18,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31801 conditions, 15499 events. 11217/15499 cut-off events. For 802/802 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 83743 event pairs, 9848 based on Foata normal form. 0/6999 useless extension candidates. Maximal degree in co-relation 31700. Up to 15100 conditions per place. [2023-09-01 07:52:18,744 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 48 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-09-01 07:52:18,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 237 flow [2023-09-01 07:52:18,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 07:52:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 07:52:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 416 transitions. [2023-09-01 07:52:18,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-09-01 07:52:18,754 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 416 transitions. [2023-09-01 07:52:18,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 416 transitions. [2023-09-01 07:52:18,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:18,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 416 transitions. [2023-09-01 07:52:18,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 208.0) internal successors, (416), 2 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:18,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:18,764 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:18,765 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 157 flow. Second operand 2 states and 416 transitions. [2023-09-01 07:52:18,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 237 flow [2023-09-01 07:52:18,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 07:52:18,853 INFO L231 Difference]: Finished difference. Result has 58 places, 57 transitions, 124 flow [2023-09-01 07:52:18,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=57} [2023-09-01 07:52:18,856 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -14 predicate places. [2023-09-01 07:52:18,856 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 57 transitions, 124 flow [2023-09-01 07:52:18,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 180.5) internal successors, (361), 2 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:18,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:18,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:52:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:52:18,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:18,858 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:18,858 INFO L85 PathProgramCache]: Analyzing trace with hash 41847, now seen corresponding path program 1 times [2023-09-01 07:52:18,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:18,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294410816] [2023-09-01 07:52:18,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:18,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:18,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:18,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:18,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294410816] [2023-09-01 07:52:18,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294410816] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:18,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:52:18,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:52:18,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886183283] [2023-09-01 07:52:18,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:18,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:52:18,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:18,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:52:18,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:52:18,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-09-01 07:52:18,965 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 57 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:18,965 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:18,966 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-09-01 07:52:18,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:21,850 INFO L130 PetriNetUnfolder]: 22433/30995 cut-off events. [2023-09-01 07:52:21,851 INFO L131 PetriNetUnfolder]: For 200/200 co-relation queries the response was YES. [2023-09-01 07:52:21,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62367 conditions, 30995 events. 22433/30995 cut-off events. For 200/200 co-relation queries the response was YES. Maximal size of possible extension queue 1791. Compared 182088 event pairs, 19696 based on Foata normal form. 0/14077 useless extension candidates. Maximal degree in co-relation 62364. Up to 15100 conditions per place. [2023-09-01 07:52:22,013 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 91 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-09-01 07:52:22,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 410 flow [2023-09-01 07:52:22,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:52:22,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:52:22,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 626 transitions. [2023-09-01 07:52:22,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4864024864024864 [2023-09-01 07:52:22,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 626 transitions. [2023-09-01 07:52:22,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 626 transitions. [2023-09-01 07:52:22,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:22,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 626 transitions. [2023-09-01 07:52:22,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 208.66666666666666) internal successors, (626), 3 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:22,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:22,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:22,024 INFO L175 Difference]: Start difference. First operand has 58 places, 57 transitions, 124 flow. Second operand 3 states and 626 transitions. [2023-09-01 07:52:22,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 410 flow [2023-09-01 07:52:22,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 102 transitions, 410 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 07:52:22,027 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 138 flow [2023-09-01 07:52:22,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2023-09-01 07:52:22,028 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-09-01 07:52:22,028 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 138 flow [2023-09-01 07:52:22,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:22,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:22,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:52:22,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:52:22,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:22,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:22,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1299021, now seen corresponding path program 1 times [2023-09-01 07:52:22,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:22,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522777939] [2023-09-01 07:52:22,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:22,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:22,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:22,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:22,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:22,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522777939] [2023-09-01 07:52:22,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522777939] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:52:22,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143990636] [2023-09-01 07:52:22,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:22,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:52:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:52:22,152 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:52:22,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:52:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:22,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:52:22,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:52:22,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:22,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:52:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:22,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143990636] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:52:22,319 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:52:22,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:52:22,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890143848] [2023-09-01 07:52:22,320 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:52:22,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:52:22,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:22,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:52:22,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:52:22,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-09-01 07:52:22,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:22,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:22,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-09-01 07:52:22,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:30,415 INFO L130 PetriNetUnfolder]: 56084/77486 cut-off events. [2023-09-01 07:52:30,415 INFO L131 PetriNetUnfolder]: For 500/500 co-relation queries the response was YES. [2023-09-01 07:52:30,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155924 conditions, 77486 events. 56084/77486 cut-off events. For 500/500 co-relation queries the response was YES. Maximal size of possible extension queue 3854. Compared 507417 event pairs, 49240 based on Foata normal form. 0/35236 useless extension candidates. Maximal degree in co-relation 155919. Up to 15099 conditions per place. [2023-09-01 07:52:30,909 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 222 selfloop transitions, 9 changer transitions 0/240 dead transitions. [2023-09-01 07:52:30,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 240 transitions, 1016 flow [2023-09-01 07:52:30,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:52:30,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:52:30,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1473 transitions. [2023-09-01 07:52:30,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4905094905094905 [2023-09-01 07:52:30,914 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1473 transitions. [2023-09-01 07:52:30,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1473 transitions. [2023-09-01 07:52:30,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:30,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1473 transitions. [2023-09-01 07:52:30,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 210.42857142857142) internal successors, (1473), 7 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:30,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:30,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:30,924 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 138 flow. Second operand 7 states and 1473 transitions. [2023-09-01 07:52:30,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 240 transitions, 1016 flow [2023-09-01 07:52:30,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 240 transitions, 1014 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:52:30,929 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 195 flow [2023-09-01 07:52:30,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=195, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-09-01 07:52:30,931 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-09-01 07:52:30,931 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 195 flow [2023-09-01 07:52:30,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 178.14285714285714) internal successors, (1247), 7 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:30,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:30,932 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-09-01 07:52:30,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 07:52:31,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:52:31,139 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:31,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:31,140 INFO L85 PathProgramCache]: Analyzing trace with hash 40271416, now seen corresponding path program 1 times [2023-09-01 07:52:31,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327349021] [2023-09-01 07:52:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:31,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:31,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327349021] [2023-09-01 07:52:31,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327349021] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:52:31,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931410902] [2023-09-01 07:52:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:31,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:52:31,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:52:31,196 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:52:31,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:52:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:31,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 07:52:31,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:52:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:31,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:52:31,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931410902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:31,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:52:31,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-09-01 07:52:31,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801568288] [2023-09-01 07:52:31,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:31,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:52:31,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:31,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:52:31,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 07:52:31,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 429 [2023-09-01 07:52:31,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:31,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:31,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 429 [2023-09-01 07:52:31,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:38,740 INFO L130 PetriNetUnfolder]: 56081/77482 cut-off events. [2023-09-01 07:52:38,740 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2023-09-01 07:52:38,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155926 conditions, 77482 events. 56081/77482 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 3512. Compared 505618 event pairs, 49240 based on Foata normal form. 2/35319 useless extension candidates. Maximal degree in co-relation 155918. Up to 45290 conditions per place. [2023-09-01 07:52:39,191 INFO L137 encePairwiseOnDemand]: 426/429 looper letters, 136 selfloop transitions, 3 changer transitions 0/148 dead transitions. [2023-09-01 07:52:39,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 148 transitions, 642 flow [2023-09-01 07:52:39,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:52:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:52:39,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2023-09-01 07:52:39,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4773892773892774 [2023-09-01 07:52:39,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2023-09-01 07:52:39,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2023-09-01 07:52:39,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:39,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2023-09-01 07:52:39,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:39,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:39,200 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:39,200 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 195 flow. Second operand 5 states and 1024 transitions. [2023-09-01 07:52:39,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 148 transitions, 642 flow [2023-09-01 07:52:39,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 148 transitions, 634 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 07:52:39,203 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 166 flow [2023-09-01 07:52:39,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-09-01 07:52:39,204 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-09-01 07:52:39,204 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 166 flow [2023-09-01 07:52:39,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:39,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:39,205 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:52:39,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 07:52:39,410 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 [2023-09-01 07:52:39,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:39,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:39,411 INFO L85 PathProgramCache]: Analyzing trace with hash 46180599, now seen corresponding path program 2 times [2023-09-01 07:52:39,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:39,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092818530] [2023-09-01 07:52:39,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:39,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:39,511 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:39,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:39,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092818530] [2023-09-01 07:52:39,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092818530] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:52:39,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462867936] [2023-09-01 07:52:39,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:52:39,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:52:39,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:52:39,514 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:52:39,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:52:39,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:52:39,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:52:39,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 07:52:39,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:52:39,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:52:39,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:52:39,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462867936] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:39,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:52:39,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:52:39,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817910063] [2023-09-01 07:52:39,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:52:39,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:39,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:52:39,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:52:39,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-09-01 07:52:39,696 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:39,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:39,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-09-01 07:52:39,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:46,747 INFO L130 PetriNetUnfolder]: 56081/77481 cut-off events. [2023-09-01 07:52:46,748 INFO L131 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2023-09-01 07:52:46,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155920 conditions, 77481 events. 56081/77481 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 3858. Compared 507766 event pairs, 49240 based on Foata normal form. 1/34997 useless extension candidates. Maximal degree in co-relation 155911. Up to 75481 conditions per place. [2023-09-01 07:52:47,121 INFO L137 encePairwiseOnDemand]: 427/429 looper letters, 49 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2023-09-01 07:52:47,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 256 flow [2023-09-01 07:52:47,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:52:47,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:52:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 581 transitions. [2023-09-01 07:52:47,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45143745143745145 [2023-09-01 07:52:47,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 581 transitions. [2023-09-01 07:52:47,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 581 transitions. [2023-09-01 07:52:47,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:47,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 581 transitions. [2023-09-01 07:52:47,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 193.66666666666666) internal successors, (581), 3 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:47,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:47,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:47,128 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 166 flow. Second operand 3 states and 581 transitions. [2023-09-01 07:52:47,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 256 flow [2023-09-01 07:52:47,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 59 transitions, 241 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-09-01 07:52:47,130 INFO L231 Difference]: Finished difference. Result has 64 places, 59 transitions, 143 flow [2023-09-01 07:52:47,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=64, PETRI_TRANSITIONS=59} [2023-09-01 07:52:47,133 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -8 predicate places. [2023-09-01 07:52:47,133 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 59 transitions, 143 flow [2023-09-01 07:52:47,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:47,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:47,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:52:47,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 07:52:47,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:52:47,341 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:47,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:47,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1381981626, now seen corresponding path program 1 times [2023-09-01 07:52:47,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:47,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057214895] [2023-09-01 07:52:47,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:47,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:47,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:47,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057214895] [2023-09-01 07:52:47,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057214895] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:47,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:52:47,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:52:47,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735767725] [2023-09-01 07:52:47,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:47,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:52:47,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:47,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:52:47,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:52:47,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-09-01 07:52:47,403 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 59 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:47,403 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:47,403 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-09-01 07:52:47,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:52:54,274 INFO L130 PetriNetUnfolder]: 60591/82691 cut-off events. [2023-09-01 07:52:54,275 INFO L131 PetriNetUnfolder]: For 1000/1000 co-relation queries the response was YES. [2023-09-01 07:52:54,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167680 conditions, 82691 events. 60591/82691 cut-off events. For 1000/1000 co-relation queries the response was YES. Maximal size of possible extension queue 4149. Compared 533558 event pairs, 42805 based on Foata normal form. 0/38036 useless extension candidates. Maximal degree in co-relation 167675. Up to 76237 conditions per place. [2023-09-01 07:52:54,653 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 73 selfloop transitions, 3 changer transitions 0/85 dead transitions. [2023-09-01 07:52:54,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 85 transitions, 355 flow [2023-09-01 07:52:54,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:52:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:52:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 610 transitions. [2023-09-01 07:52:54,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.473970473970474 [2023-09-01 07:52:54,667 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 610 transitions. [2023-09-01 07:52:54,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 610 transitions. [2023-09-01 07:52:54,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:52:54,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 610 transitions. [2023-09-01 07:52:54,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:54,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:54,670 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:54,670 INFO L175 Difference]: Start difference. First operand has 64 places, 59 transitions, 143 flow. Second operand 3 states and 610 transitions. [2023-09-01 07:52:54,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 85 transitions, 355 flow [2023-09-01 07:52:54,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:52:54,672 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 167 flow [2023-09-01 07:52:54,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-09-01 07:52:54,672 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-09-01 07:52:54,673 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 167 flow [2023-09-01 07:52:54,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:54,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:52:54,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:52:54,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:52:54,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:52:54,674 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:52:54,674 INFO L85 PathProgramCache]: Analyzing trace with hash -726265181, now seen corresponding path program 1 times [2023-09-01 07:52:54,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:52:54,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286991025] [2023-09-01 07:52:54,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:52:54,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:52:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:52:54,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:52:54,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:52:54,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286991025] [2023-09-01 07:52:54,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286991025] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:52:54,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:52:54,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 07:52:54,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629998787] [2023-09-01 07:52:54,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:52:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:52:54,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:52:54,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:52:54,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:52:54,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-09-01 07:52:54,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:52:54,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:52:54,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-09-01 07:52:54,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:01,284 INFO L130 PetriNetUnfolder]: 51998/72364 cut-off events. [2023-09-01 07:53:01,285 INFO L131 PetriNetUnfolder]: For 4443/4443 co-relation queries the response was YES. [2023-09-01 07:53:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157651 conditions, 72364 events. 51998/72364 cut-off events. For 4443/4443 co-relation queries the response was YES. Maximal size of possible extension queue 3742. Compared 479360 event pairs, 42349 based on Foata normal form. 0/38904 useless extension candidates. Maximal degree in co-relation 157645. Up to 65346 conditions per place. [2023-09-01 07:53:01,648 INFO L137 encePairwiseOnDemand]: 416/429 looper letters, 106 selfloop transitions, 4 changer transitions 10/129 dead transitions. [2023-09-01 07:53:01,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 129 transitions, 594 flow [2023-09-01 07:53:01,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 07:53:01,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 07:53:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 972 transitions. [2023-09-01 07:53:01,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45314685314685316 [2023-09-01 07:53:01,666 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 972 transitions. [2023-09-01 07:53:01,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 972 transitions. [2023-09-01 07:53:01,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:01,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 972 transitions. [2023-09-01 07:53:01,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:01,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:01,685 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 429.0) internal successors, (2574), 6 states have internal predecessors, (2574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:01,685 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 167 flow. Second operand 5 states and 972 transitions. [2023-09-01 07:53:01,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 129 transitions, 594 flow [2023-09-01 07:53:01,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 585 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:53:01,690 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 208 flow [2023-09-01 07:53:01,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2023-09-01 07:53:01,691 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-09-01 07:53:01,691 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 208 flow [2023-09-01 07:53:01,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:01,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:01,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:01,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 07:53:01,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:01,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:01,692 INFO L85 PathProgramCache]: Analyzing trace with hash -108241470, now seen corresponding path program 1 times [2023-09-01 07:53:01,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:01,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841276805] [2023-09-01 07:53:01,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:01,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:01,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:01,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:01,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841276805] [2023-09-01 07:53:01,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841276805] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:53:01,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:53:01,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 07:53:01,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423345414] [2023-09-01 07:53:01,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:53:01,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 07:53:01,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:01,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 07:53:01,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 07:53:01,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 429 [2023-09-01 07:53:01,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:01,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:01,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 429 [2023-09-01 07:53:01,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:07,856 INFO L130 PetriNetUnfolder]: 47120/66196 cut-off events. [2023-09-01 07:53:07,856 INFO L131 PetriNetUnfolder]: For 21270/21270 co-relation queries the response was YES. [2023-09-01 07:53:08,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160811 conditions, 66196 events. 47120/66196 cut-off events. For 21270/21270 co-relation queries the response was YES. Maximal size of possible extension queue 3705. Compared 446657 event pairs, 29764 based on Foata normal form. 1288/40991 useless extension candidates. Maximal degree in co-relation 160802. Up to 46454 conditions per place. [2023-09-01 07:53:08,244 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 75 selfloop transitions, 4 changer transitions 26/114 dead transitions. [2023-09-01 07:53:08,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 114 transitions, 557 flow [2023-09-01 07:53:08,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:53:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:53:08,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1128 transitions. [2023-09-01 07:53:08,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382284382284382 [2023-09-01 07:53:08,247 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1128 transitions. [2023-09-01 07:53:08,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1128 transitions. [2023-09-01 07:53:08,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:08,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1128 transitions. [2023-09-01 07:53:08,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:08,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:08,252 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 429.0) internal successors, (3003), 7 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:08,252 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 208 flow. Second operand 6 states and 1128 transitions. [2023-09-01 07:53:08,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 114 transitions, 557 flow [2023-09-01 07:53:08,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 114 transitions, 551 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 07:53:08,283 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 234 flow [2023-09-01 07:53:08,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=234, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2023-09-01 07:53:08,284 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2023-09-01 07:53:08,284 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 234 flow [2023-09-01 07:53:08,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.4) internal successors, (857), 5 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:08,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:08,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:08,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 07:53:08,285 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:08,285 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:08,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1972283143, now seen corresponding path program 1 times [2023-09-01 07:53:08,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:08,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139529451] [2023-09-01 07:53:08,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:08,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:08,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:08,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:08,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139529451] [2023-09-01 07:53:08,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139529451] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:53:08,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953379656] [2023-09-01 07:53:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:08,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:53:08,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:53:08,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 07:53:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:08,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:53:08,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:53:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:08,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:53:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:08,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953379656] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:53:08,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:53:08,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-09-01 07:53:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982184119] [2023-09-01 07:53:08,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:53:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 07:53:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 07:53:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-09-01 07:53:08,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-09-01 07:53:08,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 234 flow. Second operand has 11 states, 11 states have (on average 169.45454545454547) internal successors, (1864), 11 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:08,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:08,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-09-01 07:53:08,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:14,795 INFO L130 PetriNetUnfolder]: 38560/54065 cut-off events. [2023-09-01 07:53:14,795 INFO L131 PetriNetUnfolder]: For 36626/36626 co-relation queries the response was YES. [2023-09-01 07:53:15,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144279 conditions, 54065 events. 38560/54065 cut-off events. For 36626/36626 co-relation queries the response was YES. Maximal size of possible extension queue 2951. Compared 355364 event pairs, 27718 based on Foata normal form. 588/33300 useless extension candidates. Maximal degree in co-relation 144267. Up to 42965 conditions per place. [2023-09-01 07:53:15,230 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 134 selfloop transitions, 6 changer transitions 21/170 dead transitions. [2023-09-01 07:53:15,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 170 transitions, 946 flow [2023-09-01 07:53:15,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:53:15,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:53:15,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1330 transitions. [2023-09-01 07:53:15,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4428904428904429 [2023-09-01 07:53:15,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1330 transitions. [2023-09-01 07:53:15,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1330 transitions. [2023-09-01 07:53:15,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:15,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1330 transitions. [2023-09-01 07:53:15,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 190.0) internal successors, (1330), 7 states have internal predecessors, (1330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:15,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:15,242 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:15,242 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 234 flow. Second operand 7 states and 1330 transitions. [2023-09-01 07:53:15,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 170 transitions, 946 flow [2023-09-01 07:53:15,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 170 transitions, 920 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-09-01 07:53:15,280 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 285 flow [2023-09-01 07:53:15,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=285, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2023-09-01 07:53:15,281 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 10 predicate places. [2023-09-01 07:53:15,281 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 285 flow [2023-09-01 07:53:15,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.45454545454547) internal successors, (1864), 11 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:15,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:15,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:15,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 07:53:15,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:15,488 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:15,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:15,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1704660436, now seen corresponding path program 1 times [2023-09-01 07:53:15,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:15,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488635816] [2023-09-01 07:53:15,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:15,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:15,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488635816] [2023-09-01 07:53:15,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488635816] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:53:15,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112181348] [2023-09-01 07:53:15,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:15,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:53:15,593 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:53:15,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 07:53:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:15,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 07:53:15,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:53:15,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:15,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:53:15,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:15,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [112181348] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:53:15,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:53:15,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 07:53:15,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718670184] [2023-09-01 07:53:15,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:53:15,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 07:53:15,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:15,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 07:53:15,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-09-01 07:53:15,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-09-01 07:53:15,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 285 flow. Second operand has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:15,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:15,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-09-01 07:53:15,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:22,787 INFO L130 PetriNetUnfolder]: 35402/49783 cut-off events. [2023-09-01 07:53:22,788 INFO L131 PetriNetUnfolder]: For 55191/55191 co-relation queries the response was YES. [2023-09-01 07:53:22,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149732 conditions, 49783 events. 35402/49783 cut-off events. For 55191/55191 co-relation queries the response was YES. Maximal size of possible extension queue 2943. Compared 325952 event pairs, 22223 based on Foata normal form. 48/29780 useless extension candidates. Maximal degree in co-relation 149718. Up to 34841 conditions per place. [2023-09-01 07:53:23,159 INFO L137 encePairwiseOnDemand]: 421/429 looper letters, 74 selfloop transitions, 5 changer transitions 28/116 dead transitions. [2023-09-01 07:53:23,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 116 transitions, 671 flow [2023-09-01 07:53:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:53:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:53:23,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1279 transitions. [2023-09-01 07:53:23,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4259074259074259 [2023-09-01 07:53:23,164 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1279 transitions. [2023-09-01 07:53:23,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1279 transitions. [2023-09-01 07:53:23,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:23,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1279 transitions. [2023-09-01 07:53:23,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 182.71428571428572) internal successors, (1279), 7 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:23,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:23,172 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:23,172 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 285 flow. Second operand 7 states and 1279 transitions. [2023-09-01 07:53:23,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 116 transitions, 671 flow [2023-09-01 07:53:23,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 116 transitions, 619 flow, removed 24 selfloop flow, removed 4 redundant places. [2023-09-01 07:53:23,232 INFO L231 Difference]: Finished difference. Result has 86 places, 63 transitions, 251 flow [2023-09-01 07:53:23,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=86, PETRI_TRANSITIONS=63} [2023-09-01 07:53:23,233 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 14 predicate places. [2023-09-01 07:53:23,233 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 63 transitions, 251 flow [2023-09-01 07:53:23,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 169.66666666666666) internal successors, (2036), 12 states have internal predecessors, (2036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:23,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:23,234 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:23,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 07:53:23,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-09-01 07:53:23,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:23,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:23,440 INFO L85 PathProgramCache]: Analyzing trace with hash -272064547, now seen corresponding path program 2 times [2023-09-01 07:53:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97457139] [2023-09-01 07:53:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:23,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:23,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97457139] [2023-09-01 07:53:23,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97457139] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:53:23,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76644126] [2023-09-01 07:53:23,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:53:23,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:23,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:53:23,758 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:53:23,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 07:53:23,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:53:23,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:53:23,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 07:53:23,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:53:23,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 07:53:23,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:53:23,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 07:53:23,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:53:23,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 07:53:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:24,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:53:24,055 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_262 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_262) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456))) is different from false [2023-09-01 07:53:24,079 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_261 (Array Int Int)) (v_ArrVal_262 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_261) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_262) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456))) is different from false [2023-09-01 07:53:24,091 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:53:24,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-09-01 07:53:24,099 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:53:24,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 147 [2023-09-01 07:53:24,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2023-09-01 07:53:24,118 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 20 [2023-09-01 07:53:24,171 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-09-01 07:53:24,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76644126] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:53:24,171 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:53:24,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 07:53:24,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15431518] [2023-09-01 07:53:24,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:53:24,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 07:53:24,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:24,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 07:53:24,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=255, Unknown=2, NotChecked=66, Total=380 [2023-09-01 07:53:24,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 429 [2023-09-01 07:53:24,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 63 transitions, 251 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:24,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:24,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 429 [2023-09-01 07:53:24,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:30,379 INFO L130 PetriNetUnfolder]: 39901/55554 cut-off events. [2023-09-01 07:53:30,379 INFO L131 PetriNetUnfolder]: For 42237/42237 co-relation queries the response was YES. [2023-09-01 07:53:30,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154317 conditions, 55554 events. 39901/55554 cut-off events. For 42237/42237 co-relation queries the response was YES. Maximal size of possible extension queue 2894. Compared 351547 event pairs, 21402 based on Foata normal form. 0/33537 useless extension candidates. Maximal degree in co-relation 154302. Up to 54319 conditions per place. [2023-09-01 07:53:30,824 INFO L137 encePairwiseOnDemand]: 417/429 looper letters, 68 selfloop transitions, 11 changer transitions 0/84 dead transitions. [2023-09-01 07:53:30,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 84 transitions, 487 flow [2023-09-01 07:53:30,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:53:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:53:30,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1119 transitions. [2023-09-01 07:53:30,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3726273726273726 [2023-09-01 07:53:30,828 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1119 transitions. [2023-09-01 07:53:30,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1119 transitions. [2023-09-01 07:53:30,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:30,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1119 transitions. [2023-09-01 07:53:30,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:30,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:30,848 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:30,848 INFO L175 Difference]: Start difference. First operand has 86 places, 63 transitions, 251 flow. Second operand 7 states and 1119 transitions. [2023-09-01 07:53:30,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 84 transitions, 487 flow [2023-09-01 07:53:30,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 84 transitions, 461 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-09-01 07:53:30,960 INFO L231 Difference]: Finished difference. Result has 83 places, 69 transitions, 304 flow [2023-09-01 07:53:30,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=304, PETRI_PLACES=83, PETRI_TRANSITIONS=69} [2023-09-01 07:53:30,960 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 11 predicate places. [2023-09-01 07:53:30,960 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 69 transitions, 304 flow [2023-09-01 07:53:30,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:30,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:30,962 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:30,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 07:53:31,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:31,168 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:31,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash 155935032, now seen corresponding path program 1 times [2023-09-01 07:53:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:31,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840136469] [2023-09-01 07:53:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:31,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:31,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:31,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840136469] [2023-09-01 07:53:31,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840136469] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:53:31,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19263283] [2023-09-01 07:53:31,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:31,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:31,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:53:31,325 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:53:31,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 07:53:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:31,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 07:53:31,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:53:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:31,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:53:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:31,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19263283] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:53:31,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:53:31,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 07:53:31,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296333283] [2023-09-01 07:53:31,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:53:31,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 07:53:31,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:31,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 07:53:31,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-09-01 07:53:31,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 429 [2023-09-01 07:53:31,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 69 transitions, 304 flow. Second operand has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:31,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:31,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 429 [2023-09-01 07:53:31,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:36,793 INFO L130 PetriNetUnfolder]: 32815/45861 cut-off events. [2023-09-01 07:53:36,794 INFO L131 PetriNetUnfolder]: For 34225/34225 co-relation queries the response was YES. [2023-09-01 07:53:36,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133679 conditions, 45861 events. 32815/45861 cut-off events. For 34225/34225 co-relation queries the response was YES. Maximal size of possible extension queue 2453. Compared 295628 event pairs, 16383 based on Foata normal form. 948/28460 useless extension candidates. Maximal degree in co-relation 133665. Up to 28724 conditions per place. [2023-09-01 07:53:37,157 INFO L137 encePairwiseOnDemand]: 415/429 looper letters, 211 selfloop transitions, 18 changer transitions 14/253 dead transitions. [2023-09-01 07:53:37,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 253 transitions, 1475 flow [2023-09-01 07:53:37,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 07:53:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 07:53:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1905 transitions. [2023-09-01 07:53:37,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44405594405594406 [2023-09-01 07:53:37,161 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1905 transitions. [2023-09-01 07:53:37,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1905 transitions. [2023-09-01 07:53:37,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:37,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1905 transitions. [2023-09-01 07:53:37,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 190.5) internal successors, (1905), 10 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:37,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 429.0) internal successors, (4719), 11 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:37,183 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 429.0) internal successors, (4719), 11 states have internal predecessors, (4719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:37,183 INFO L175 Difference]: Start difference. First operand has 83 places, 69 transitions, 304 flow. Second operand 10 states and 1905 transitions. [2023-09-01 07:53:37,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 253 transitions, 1475 flow [2023-09-01 07:53:37,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 253 transitions, 1436 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-09-01 07:53:37,246 INFO L231 Difference]: Finished difference. Result has 92 places, 83 transitions, 480 flow [2023-09-01 07:53:37,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=480, PETRI_PLACES=92, PETRI_TRANSITIONS=83} [2023-09-01 07:53:37,247 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 20 predicate places. [2023-09-01 07:53:37,247 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 83 transitions, 480 flow [2023-09-01 07:53:37,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 169.35294117647058) internal successors, (2879), 17 states have internal predecessors, (2879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:37,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:37,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:37,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 07:53:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:37,450 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread4Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:37,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash -272064546, now seen corresponding path program 1 times [2023-09-01 07:53:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:37,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591984449] [2023-09-01 07:53:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:37,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:37,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:37,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591984449] [2023-09-01 07:53:37,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591984449] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:53:37,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591574723] [2023-09-01 07:53:37,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:37,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:53:37,779 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:53:37,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 07:53:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:37,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 07:53:37,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:53:37,948 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 07:53:37,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:53:37,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:53:38,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:53:38,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:53:38,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:38,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:53:38,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:53:38,152 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 07:53:38,159 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:53:38,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-09-01 07:53:38,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-09-01 07:53:38,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2023-09-01 07:53:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:38,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591574723] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:53:38,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:53:38,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-09-01 07:53:38,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915526864] [2023-09-01 07:53:38,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:53:38,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 07:53:38,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:38,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 07:53:38,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=315, Unknown=4, NotChecked=0, Total=380 [2023-09-01 07:53:38,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 429 [2023-09-01 07:53:38,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 83 transitions, 480 flow. Second operand has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:38,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:38,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 429 [2023-09-01 07:53:38,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:44,308 INFO L130 PetriNetUnfolder]: 37226/52019 cut-off events. [2023-09-01 07:53:44,308 INFO L131 PetriNetUnfolder]: For 70058/70058 co-relation queries the response was YES. [2023-09-01 07:53:44,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177212 conditions, 52019 events. 37226/52019 cut-off events. For 70058/70058 co-relation queries the response was YES. Maximal size of possible extension queue 2548. Compared 328080 event pairs, 20612 based on Foata normal form. 0/31886 useless extension candidates. Maximal degree in co-relation 177195. Up to 50865 conditions per place. [2023-09-01 07:53:44,715 INFO L137 encePairwiseOnDemand]: 420/429 looper letters, 78 selfloop transitions, 15 changer transitions 0/98 dead transitions. [2023-09-01 07:53:44,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 98 transitions, 756 flow [2023-09-01 07:53:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 07:53:44,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 07:53:44,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1116 transitions. [2023-09-01 07:53:44,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37162837162837165 [2023-09-01 07:53:44,718 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1116 transitions. [2023-09-01 07:53:44,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1116 transitions. [2023-09-01 07:53:44,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:44,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1116 transitions. [2023-09-01 07:53:44,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.42857142857142) internal successors, (1116), 7 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:44,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:44,722 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 429.0) internal successors, (3432), 8 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:44,722 INFO L175 Difference]: Start difference. First operand has 92 places, 83 transitions, 480 flow. Second operand 7 states and 1116 transitions. [2023-09-01 07:53:44,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 98 transitions, 756 flow [2023-09-01 07:53:45,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 98 transitions, 694 flow, removed 28 selfloop flow, removed 5 redundant places. [2023-09-01 07:53:45,485 INFO L231 Difference]: Finished difference. Result has 93 places, 81 transitions, 444 flow [2023-09-01 07:53:45,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=444, PETRI_PLACES=93, PETRI_TRANSITIONS=81} [2023-09-01 07:53:45,486 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 21 predicate places. [2023-09-01 07:53:45,486 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 81 transitions, 444 flow [2023-09-01 07:53:45,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 150.5) internal successors, (3010), 20 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:45,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:45,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:45,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-09-01 07:53:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 07:53:45,694 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:45,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash -272064545, now seen corresponding path program 1 times [2023-09-01 07:53:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000879438] [2023-09-01 07:53:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:45,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:53:45,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:45,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000879438] [2023-09-01 07:53:45,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000879438] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:53:45,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:53:45,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:53:45,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926246951] [2023-09-01 07:53:45,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:53:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:53:45,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:53:45,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:53:45,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-09-01 07:53:45,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 81 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:45,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:45,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-09-01 07:53:45,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:53:52,490 INFO L130 PetriNetUnfolder]: 45075/62590 cut-off events. [2023-09-01 07:53:52,490 INFO L131 PetriNetUnfolder]: For 63948/63948 co-relation queries the response was YES. [2023-09-01 07:53:52,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202095 conditions, 62590 events. 45075/62590 cut-off events. For 63948/63948 co-relation queries the response was YES. Maximal size of possible extension queue 3349. Compared 410588 event pairs, 21513 based on Foata normal form. 4/37621 useless extension candidates. Maximal degree in co-relation 202079. Up to 36680 conditions per place. [2023-09-01 07:53:53,115 INFO L137 encePairwiseOnDemand]: 425/429 looper letters, 98 selfloop transitions, 8 changer transitions 0/116 dead transitions. [2023-09-01 07:53:53,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 116 transitions, 782 flow [2023-09-01 07:53:53,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:53:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:53:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 619 transitions. [2023-09-01 07:53:53,117 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48096348096348096 [2023-09-01 07:53:53,117 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 619 transitions. [2023-09-01 07:53:53,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 619 transitions. [2023-09-01 07:53:53,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:53:53,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 619 transitions. [2023-09-01 07:53:53,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.33333333333334) internal successors, (619), 3 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:53,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:53,119 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:53,120 INFO L175 Difference]: Start difference. First operand has 93 places, 81 transitions, 444 flow. Second operand 3 states and 619 transitions. [2023-09-01 07:53:53,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 116 transitions, 782 flow [2023-09-01 07:53:53,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 760 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 07:53:53,744 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 400 flow [2023-09-01 07:53:53,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-09-01 07:53:53,745 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 18 predicate places. [2023-09-01 07:53:53,745 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 400 flow [2023-09-01 07:53:53,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:53,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:53:53,746 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:53:53,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 07:53:53,746 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:53:53,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:53:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash 345959171, now seen corresponding path program 1 times [2023-09-01 07:53:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:53:53,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845093726] [2023-09-01 07:53:53,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:53,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:53:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:54,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:53:54,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845093726] [2023-09-01 07:53:54,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845093726] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:53:54,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252406677] [2023-09-01 07:53:54,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:53:54,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:53:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:53:54,073 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:53:54,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 07:53:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:53:54,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 07:53:54,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:53:54,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 07:53:54,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:53:54,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:53:54,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:53:54,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 07:53:54,342 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2023-09-01 07:53:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:53:54,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:53:54,444 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_399 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_399) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 4294967296)) is different from false [2023-09-01 07:53:54,454 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_37| Int) (v_ArrVal_399 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_37| v_ArrVal_399) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_37| |c_#StackHeapBarrier|))) is different from false [2023-09-01 07:53:54,469 WARN L839 $PredicateComparison]: unable to prove that (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_37| Int) (v_ArrVal_399 (Array Int Int)) (v_ArrVal_398 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_398) |v_thread1Thread1of1ForFork0_~#t2~0.base_37| v_ArrVal_399) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 4294967296) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_37| |c_#StackHeapBarrier|))) is different from false [2023-09-01 07:53:54,481 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:53:54,481 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 07:53:54,488 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:53:54,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 65 [2023-09-01 07:53:54,492 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-09-01 07:53:54,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2023-09-01 07:53:54,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-09-01 07:53:54,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252406677] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:53:54,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:53:54,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-09-01 07:53:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946495684] [2023-09-01 07:53:54,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:53:54,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 07:53:54,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:53:54,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 07:53:54,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=296, Unknown=3, NotChecked=108, Total=462 [2023-09-01 07:53:54,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 429 [2023-09-01 07:53:54,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 400 flow. Second operand has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:53:54,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:53:54,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 429 [2023-09-01 07:53:54,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:54:06,964 INFO L130 PetriNetUnfolder]: 85604/117938 cut-off events. [2023-09-01 07:54:06,964 INFO L131 PetriNetUnfolder]: For 163422/163422 co-relation queries the response was YES. [2023-09-01 07:54:07,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 388394 conditions, 117938 events. 85604/117938 cut-off events. For 163422/163422 co-relation queries the response was YES. Maximal size of possible extension queue 5600. Compared 803812 event pairs, 32112 based on Foata normal form. 0/75126 useless extension candidates. Maximal degree in co-relation 388377. Up to 63872 conditions per place. [2023-09-01 07:54:07,764 INFO L137 encePairwiseOnDemand]: 416/429 looper letters, 166 selfloop transitions, 31 changer transitions 0/202 dead transitions. [2023-09-01 07:54:07,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 202 transitions, 1406 flow [2023-09-01 07:54:07,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 07:54:07,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 07:54:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2023 transitions. [2023-09-01 07:54:07,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3627398242782858 [2023-09-01 07:54:07,768 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2023 transitions. [2023-09-01 07:54:07,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2023 transitions. [2023-09-01 07:54:07,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:54:07,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2023 transitions. [2023-09-01 07:54:07,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 155.6153846153846) internal successors, (2023), 13 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:07,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 429.0) internal successors, (6006), 14 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:07,775 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 429.0) internal successors, (6006), 14 states have internal predecessors, (6006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:07,775 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 400 flow. Second operand 13 states and 2023 transitions. [2023-09-01 07:54:07,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 202 transitions, 1406 flow [2023-09-01 07:54:08,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 202 transitions, 1390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:54:08,095 INFO L231 Difference]: Finished difference. Result has 107 places, 104 transitions, 607 flow [2023-09-01 07:54:08,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=607, PETRI_PLACES=107, PETRI_TRANSITIONS=104} [2023-09-01 07:54:08,096 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-09-01 07:54:08,096 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 104 transitions, 607 flow [2023-09-01 07:54:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:08,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:54:08,096 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:54:08,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 07:54:08,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 07:54:08,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:54:08,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:54:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash 345959173, now seen corresponding path program 1 times [2023-09-01 07:54:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:54:08,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654579576] [2023-09-01 07:54:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:54:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:54:08,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:54:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 07:54:08,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:54:08,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654579576] [2023-09-01 07:54:08,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654579576] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:54:08,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:54:08,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:54:08,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769552802] [2023-09-01 07:54:08,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:54:08,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:54:08,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:54:08,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:54:08,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:54:08,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 429 [2023-09-01 07:54:08,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 104 transitions, 607 flow. Second operand has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:08,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:54:08,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 429 [2023-09-01 07:54:08,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:54:24,538 INFO L130 PetriNetUnfolder]: 100504/138425 cut-off events. [2023-09-01 07:54:24,539 INFO L131 PetriNetUnfolder]: For 218621/218784 co-relation queries the response was YES. [2023-09-01 07:54:25,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501418 conditions, 138425 events. 100504/138425 cut-off events. For 218621/218784 co-relation queries the response was YES. Maximal size of possible extension queue 6195. Compared 980919 event pairs, 59201 based on Foata normal form. 21/96185 useless extension candidates. Maximal degree in co-relation 501396. Up to 104389 conditions per place. [2023-09-01 07:54:25,818 INFO L137 encePairwiseOnDemand]: 422/429 looper letters, 125 selfloop transitions, 5 changer transitions 0/155 dead transitions. [2023-09-01 07:54:25,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 155 transitions, 1187 flow [2023-09-01 07:54:25,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:54:25,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:54:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 620 transitions. [2023-09-01 07:54:25,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48174048174048173 [2023-09-01 07:54:25,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 620 transitions. [2023-09-01 07:54:25,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 620 transitions. [2023-09-01 07:54:25,820 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:54:25,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 620 transitions. [2023-09-01 07:54:25,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.66666666666666) internal successors, (620), 3 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:25,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:25,836 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 429.0) internal successors, (1716), 4 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:25,837 INFO L175 Difference]: Start difference. First operand has 107 places, 104 transitions, 607 flow. Second operand 3 states and 620 transitions. [2023-09-01 07:54:25,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 155 transitions, 1187 flow [2023-09-01 07:54:28,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 155 transitions, 1180 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 07:54:28,362 INFO L231 Difference]: Finished difference. Result has 107 places, 107 transitions, 646 flow [2023-09-01 07:54:28,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=429, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=646, PETRI_PLACES=107, PETRI_TRANSITIONS=107} [2023-09-01 07:54:28,362 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 35 predicate places. [2023-09-01 07:54:28,362 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 107 transitions, 646 flow [2023-09-01 07:54:28,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 180.66666666666666) internal successors, (542), 3 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:28,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:54:28,363 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 07:54:28,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 07:54:28,363 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 55 more)] === [2023-09-01 07:54:28,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:54:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 345959170, now seen corresponding path program 2 times [2023-09-01 07:54:28,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:54:28,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129845745] [2023-09-01 07:54:28,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:54:28,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:54:28,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:54:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:54:28,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:54:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129845745] [2023-09-01 07:54:28,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129845745] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:54:28,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260806355] [2023-09-01 07:54:28,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:54:28,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:54:28,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:54:28,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:54:28,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 07:54:28,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 07:54:28,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:54:28,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 07:54:28,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:54:28,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 07:54:28,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:54:28,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 07:54:29,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 07:54:29,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 07:54:29,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-09-01 07:54:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:54:29,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:54:29,084 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_469) c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) 9223372039002259456))) is different from false [2023-09-01 07:54:29,094 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (|v_thread1Thread1of1ForFork0_~#t2~0.base_39| Int)) (or (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_39| |c_#StackHeapBarrier|) (< 0 (+ (select (select (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_39| v_ArrVal_469) c_~X_0~0.base) (+ c_~X_0~0.offset 4)) 9223372039002259456)))) is different from false [2023-09-01 07:54:29,113 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_468 (Array Int Int)) (|v_thread1Thread1of1ForFork0_~#t2~0.base_39| Int)) (or (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_468) |v_thread1Thread1of1ForFork0_~#t2~0.base_39| v_ArrVal_469) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ 4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 9223372039002259456)) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_39| |c_#StackHeapBarrier|))) is different from false [2023-09-01 07:54:29,124 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:54:29,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-09-01 07:54:29,131 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 07:54:29,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 81 treesize of output 75 [2023-09-01 07:54:29,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-09-01 07:54:29,142 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2023-09-01 07:54:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-09-01 07:54:29,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260806355] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:54:29,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:54:29,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2023-09-01 07:54:29,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581881181] [2023-09-01 07:54:29,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:54:29,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 07:54:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:54:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 07:54:29,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=296, Unknown=3, NotChecked=108, Total=462 [2023-09-01 07:54:29,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 429 [2023-09-01 07:54:29,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 107 transitions, 646 flow. Second operand has 22 states, 22 states have (on average 144.3181818181818) internal successors, (3175), 22 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:54:29,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:54:29,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 429 [2023-09-01 07:54:29,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand