./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.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 a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:40:35,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:40:35,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:40:35,872 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:40:35,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:40:35,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:40:35,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:40:35,882 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:40:35,883 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:40:35,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:40:35,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:40:35,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:40:35,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:40:35,893 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:40:35,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:40:35,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:40:35,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:40:35,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:40:35,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:40:35,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:40:35,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:40:35,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:40:35,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:40:35,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:40:35,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:40:35,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:40:35,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:40:35,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:40:35,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:40:35,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:40:35,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:40:35,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:40:35,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:40:35,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:40:35,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:40:35,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:40:35,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:40:35,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:40:35,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:40:35,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:40:35,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:40:35,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:40:35,964 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:40:35,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:40:35,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:40:35,965 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:40:35,966 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:40:35,966 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:40:35,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:40:35,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:40:35,967 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:40:35,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:40:35,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:40:35,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:40:35,969 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:40:35,969 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:40:35,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:40:35,969 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:40:35,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:40:35,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:40:35,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:40:35,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:40:35,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:40:35,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:40:35,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:40:35,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:40:35,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:40:35,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:40:35,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:40:35,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:40:35,971 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:40:35,971 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:40:35,971 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:40:35,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1648913be4b4e88120f8ece4966a58804b334c451c87254dfc42f8e396f396f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:40:36,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:40:36,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:40:36,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:40:36,252 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:40:36,252 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:40:36,253 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2023-08-30 11:40:37,377 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:40:37,564 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:40:37,564 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c [2023-08-30 11:40:37,584 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048a5cf76/fd4806e3c6784c148be58a791de30418/FLAG8bbc42e55 [2023-08-30 11:40:37,595 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/048a5cf76/fd4806e3c6784c148be58a791de30418 [2023-08-30 11:40:37,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:40:37,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:40:37,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:40:37,599 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:40:37,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:40:37,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495ab0be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37, skipping insertion in model container [2023-08-30 11:40:37,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:40:37,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:40:37,736 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2023-08-30 11:40:37,742 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:40:37,752 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:40:37,785 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-inc-dec.wvr.c[3271,3284] [2023-08-30 11:40:37,793 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:40:37,802 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:40:37,802 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:40:37,806 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:40:37,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37 WrapperNode [2023-08-30 11:40:37,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:40:37,808 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:40:37,808 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:40:37,808 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:40:37,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,854 INFO L138 Inliner]: procedures = 27, calls = 75, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 186 [2023-08-30 11:40:37,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:40:37,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:40:37,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:40:37,856 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:40:37,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,917 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,928 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:40:37,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:40:37,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:40:37,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:40:37,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (1/1) ... [2023-08-30 11:40:37,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:40:37,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:37,961 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:40:37,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:40:37,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:40:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:40:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:40:37,991 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:40:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:40:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:40:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 11:40:37,992 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 11:40:37,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-30 11:40:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-30 11:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:40:37,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:40:37,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:40:37,994 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:40:38,131 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:40:38,142 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:40:38,405 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:40:38,526 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:40:38,526 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 11:40:38,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:40:38 BoogieIcfgContainer [2023-08-30 11:40:38,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:40:38,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:40:38,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:40:38,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:40:38,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:40:37" (1/3) ... [2023-08-30 11:40:38,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5693c9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:40:38, skipping insertion in model container [2023-08-30 11:40:38,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:40:37" (2/3) ... [2023-08-30 11:40:38,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5693c9a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:40:38, skipping insertion in model container [2023-08-30 11:40:38,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:40:38" (3/3) ... [2023-08-30 11:40:38,536 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-inc-dec.wvr.c [2023-08-30 11:40:38,548 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:40:38,556 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:40:38,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-30 11:40:38,557 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:40:38,674 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-30 11:40:38,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 209 transitions, 458 flow [2023-08-30 11:40:38,804 INFO L130 PetriNetUnfolder]: 14/204 cut-off events. [2023-08-30 11:40:38,805 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 11:40:38,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 204 events. 14/204 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2023-08-30 11:40:38,814 INFO L82 GeneralOperation]: Start removeDead. Operand has 211 places, 209 transitions, 458 flow [2023-08-30 11:40:38,823 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 182 transitions, 391 flow [2023-08-30 11:40:38,825 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:40:38,833 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 182 transitions, 391 flow [2023-08-30 11:40:38,835 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 182 transitions, 391 flow [2023-08-30 11:40:38,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 182 transitions, 391 flow [2023-08-30 11:40:38,860 INFO L130 PetriNetUnfolder]: 13/182 cut-off events. [2023-08-30 11:40:38,861 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 11:40:38,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 182 events. 13/182 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 243 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2023-08-30 11:40:38,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 6742 [2023-08-30 11:40:46,671 INFO L134 LiptonReduction]: Checked pairs total: 10395 [2023-08-30 11:40:46,674 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-08-30 11:40:46,699 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:40:46,707 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;@30a34196, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:40:46,708 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-30 11:40:46,712 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:40:46,712 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:40:46,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:46,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:40:46,714 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:40:46,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:46,718 INFO L85 PathProgramCache]: Analyzing trace with hash 28746, now seen corresponding path program 1 times [2023-08-30 11:40:46,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:46,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628738132] [2023-08-30 11:40:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:46,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:47,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:40:47,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:47,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628738132] [2023-08-30 11:40:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628738132] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:40:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:40:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:40:47,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69223786] [2023-08-30 11:40:47,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:40:47,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:40:47,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:40:47,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:40:47,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 381 [2023-08-30 11:40:47,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 131 flow. Second operand has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:40:47,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:47,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 381 [2023-08-30 11:40:47,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:40:57,404 INFO L130 PetriNetUnfolder]: 127619/152501 cut-off events. [2023-08-30 11:40:57,405 INFO L131 PetriNetUnfolder]: For 2314/2314 co-relation queries the response was YES. [2023-08-30 11:40:57,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312327 conditions, 152501 events. 127619/152501 cut-off events. For 2314/2314 co-relation queries the response was YES. Maximal size of possible extension queue 7422. Compared 759330 event pairs, 81886 based on Foata normal form. 0/61233 useless extension candidates. Maximal degree in co-relation 137400. Up to 76025 conditions per place. [2023-08-30 11:40:58,139 INFO L137 encePairwiseOnDemand]: 374/381 looper letters, 89 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-08-30 11:40:58,140 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 422 flow [2023-08-30 11:40:58,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:40:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:40:58,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-30 11:40:58,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5406824146981627 [2023-08-30 11:40:58,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-30 11:40:58,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-30 11:40:58,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:40:58,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-30 11:40:58,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:40:58,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:40:58,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:40:58,172 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 131 flow. Second operand 3 states and 618 transitions. [2023-08-30 11:40:58,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 422 flow [2023-08-30 11:40:59,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 93 transitions, 388 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-30 11:40:59,178 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 122 flow [2023-08-30 11:40:59,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-30 11:40:59,181 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2023-08-30 11:40:59,181 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 122 flow [2023-08-30 11:40:59,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.66666666666666) internal successors, (521), 3 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:40:59,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:40:59,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:40:59,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:40:59,182 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:40:59,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:40:59,197 INFO L85 PathProgramCache]: Analyzing trace with hash 892005, now seen corresponding path program 1 times [2023-08-30 11:40:59,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:40:59,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414672420] [2023-08-30 11:40:59,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:59,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:40:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:59,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:40:59,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:40:59,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414672420] [2023-08-30 11:40:59,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414672420] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:40:59,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113911327] [2023-08-30 11:40:59,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:40:59,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:40:59,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:40:59,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:40:59,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:40:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:40:59,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:40:59,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:40:59,426 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:40:59,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:40:59,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:40:59,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113911327] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:40:59,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:40:59,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:40:59,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561737902] [2023-08-30 11:40:59,467 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:40:59,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:40:59,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:40:59,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:40:59,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:40:59,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 381 [2023-08-30 11:40:59,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 174.14285714285714) internal successors, (1219), 7 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:40:59,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:40:59,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 381 [2023-08-30 11:40:59,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:20,672 INFO L130 PetriNetUnfolder]: 319049/381251 cut-off events. [2023-08-30 11:41:20,672 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:41:21,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775633 conditions, 381251 events. 319049/381251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16365. Compared 2047361 event pairs, 204715 based on Foata normal form. 0/153428 useless extension candidates. Maximal degree in co-relation 620503. Up to 76024 conditions per place. [2023-08-30 11:41:22,429 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 217 selfloop transitions, 9 changer transitions 0/228 dead transitions. [2023-08-30 11:41:22,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 228 transitions, 982 flow [2023-08-30 11:41:22,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 11:41:22,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 11:41:22,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1440 transitions. [2023-08-30 11:41:22,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5399325084364455 [2023-08-30 11:41:22,432 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1440 transitions. [2023-08-30 11:41:22,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1440 transitions. [2023-08-30 11:41:22,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:22,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1440 transitions. [2023-08-30 11:41:22,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.71428571428572) internal successors, (1440), 7 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:22,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 381.0) internal successors, (3048), 8 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:22,440 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 381.0) internal successors, (3048), 8 states have internal predecessors, (3048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:22,440 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 122 flow. Second operand 7 states and 1440 transitions. [2023-08-30 11:41:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 228 transitions, 982 flow [2023-08-30 11:41:22,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 228 transitions, 980 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:41:22,444 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 179 flow [2023-08-30 11:41:22,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=179, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 11:41:22,444 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -1 predicate places. [2023-08-30 11:41:22,445 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 179 flow [2023-08-30 11:41:22,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 174.14285714285714) internal successors, (1219), 7 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:22,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:22,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-08-30 11:41:22,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 11:41:22,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:22,650 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:41:22,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 27652970, now seen corresponding path program 1 times [2023-08-30 11:41:22,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:22,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108387526] [2023-08-30 11:41:22,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:22,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:41:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108387526] [2023-08-30 11:41:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108387526] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738169387] [2023-08-30 11:41:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:22,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:22,777 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:41:22,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:41:22,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:22,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:41:22,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:22,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:41:22,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:41:22,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738169387] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:41:22,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:41:22,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-30 11:41:22,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951614431] [2023-08-30 11:41:22,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:41:22,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:41:22,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:22,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:41:22,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 11:41:22,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 381 [2023-08-30 11:41:22,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:22,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:22,881 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 381 [2023-08-30 11:41:22,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:41:43,667 INFO L130 PetriNetUnfolder]: 319046/381247 cut-off events. [2023-08-30 11:41:43,667 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 11:41:44,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775635 conditions, 381247 events. 319046/381247 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16365. Compared 2048276 event pairs, 204715 based on Foata normal form. 2/153431 useless extension candidates. Maximal degree in co-relation 465371. Up to 228065 conditions per place. [2023-08-30 11:41:45,247 INFO L137 encePairwiseOnDemand]: 378/381 looper letters, 133 selfloop transitions, 3 changer transitions 0/138 dead transitions. [2023-08-30 11:41:45,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 138 transitions, 616 flow [2023-08-30 11:41:45,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 11:41:45,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 11:41:45,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1001 transitions. [2023-08-30 11:41:45,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254593175853018 [2023-08-30 11:41:45,250 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1001 transitions. [2023-08-30 11:41:45,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1001 transitions. [2023-08-30 11:41:45,250 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:41:45,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1001 transitions. [2023-08-30 11:41:45,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 200.2) internal successors, (1001), 5 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:45,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:45,255 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:45,255 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 179 flow. Second operand 5 states and 1001 transitions. [2023-08-30 11:41:45,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 138 transitions, 616 flow [2023-08-30 11:41:45,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 138 transitions, 608 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 11:41:45,258 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 150 flow [2023-08-30 11:41:45,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2023-08-30 11:41:45,259 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2023-08-30 11:41:45,259 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 150 flow [2023-08-30 11:41:45,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.8) internal successors, (869), 5 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:45,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:41:45,259 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:41:45,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:41:45,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:41:45,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:41:45,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:41:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash 804728460, now seen corresponding path program 2 times [2023-08-30 11:41:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:41:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862872955] [2023-08-30 11:41:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:41:45,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:41:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:41:45,549 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:41:45,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:41:45,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862872955] [2023-08-30 11:41:45,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862872955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:41:45,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268101920] [2023-08-30 11:41:45,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:41:45,551 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:41:45,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:41:45,565 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:41:45,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:41:45,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:41:45,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:41:45,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:41:45,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:41:45,651 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:41:45,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:41:45,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268101920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:41:45,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:41:45,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:41:45,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84761330] [2023-08-30 11:41:45,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:41:45,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:41:45,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:41:45,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:41:45,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:41:45,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 381 [2023-08-30 11:41:45,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:41:45,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:41:45,660 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 381 [2023-08-30 11:41:45,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:05,899 INFO L130 PetriNetUnfolder]: 319046/381246 cut-off events. [2023-08-30 11:42:05,900 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:42:06,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775629 conditions, 381246 events. 319046/381246 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16365. Compared 2045712 event pairs, 204715 based on Foata normal form. 1/152547 useless extension candidates. Maximal degree in co-relation 620489. Up to 380106 conditions per place. [2023-08-30 11:42:07,682 INFO L137 encePairwiseOnDemand]: 379/381 looper letters, 48 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-08-30 11:42:07,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 51 transitions, 238 flow [2023-08-30 11:42:07,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:42:07,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:42:07,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 568 transitions. [2023-08-30 11:42:07,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969378827646544 [2023-08-30 11:42:07,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 568 transitions. [2023-08-30 11:42:07,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 568 transitions. [2023-08-30 11:42:07,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:07,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 568 transitions. [2023-08-30 11:42:07,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.33333333333334) internal successors, (568), 3 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:07,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:07,691 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:07,691 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 150 flow. Second operand 3 states and 568 transitions. [2023-08-30 11:42:07,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 51 transitions, 238 flow [2023-08-30 11:42:07,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 223 flow, removed 1 selfloop flow, removed 7 redundant places. [2023-08-30 11:42:07,692 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 127 flow [2023-08-30 11:42:07,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-30 11:42:07,693 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -6 predicate places. [2023-08-30 11:42:07,693 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 127 flow [2023-08-30 11:42:07,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.0) internal successors, (525), 3 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:07,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:07,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:42:07,697 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 11:42:07,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:07,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:42:07,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 806169829, now seen corresponding path program 1 times [2023-08-30 11:42:07,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:07,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472627789] [2023-08-30 11:42:07,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:07,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:07,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:07,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472627789] [2023-08-30 11:42:07,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472627789] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:42:07,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:42:07,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:42:07,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325342173] [2023-08-30 11:42:07,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:42:07,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:42:07,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:07,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:42:07,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:42:07,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 381 [2023-08-30 11:42:07,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:07,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:07,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 381 [2023-08-30 11:42:07,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:42:36,607 INFO L130 PetriNetUnfolder]: 453606/541716 cut-off events. [2023-08-30 11:42:36,607 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:42:37,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101339 conditions, 541716 events. 453606/541716 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21848. Compared 3030364 event pairs, 204965 based on Foata normal form. 0/217161 useless extension candidates. Maximal degree in co-relation 1101331. Up to 380507 conditions per place. [2023-08-30 11:42:38,995 INFO L137 encePairwiseOnDemand]: 377/381 looper letters, 84 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-30 11:42:38,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 88 transitions, 382 flow [2023-08-30 11:42:38,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:42:38,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:42:38,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 606 transitions. [2023-08-30 11:42:38,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5301837270341208 [2023-08-30 11:42:38,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 606 transitions. [2023-08-30 11:42:38,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 606 transitions. [2023-08-30 11:42:38,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:42:38,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 606 transitions. [2023-08-30 11:42:38,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 202.0) internal successors, (606), 3 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:39,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:39,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:39,001 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 127 flow. Second operand 3 states and 606 transitions. [2023-08-30 11:42:39,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 88 transitions, 382 flow [2023-08-30 11:42:39,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 88 transitions, 381 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:42:39,003 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 140 flow [2023-08-30 11:42:39,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-30 11:42:39,004 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2023-08-30 11:42:39,004 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 140 flow [2023-08-30 11:42:39,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:39,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:42:39,004 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:42:39,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:42:39,005 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:42:39,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:42:39,005 INFO L85 PathProgramCache]: Analyzing trace with hash -778537989, now seen corresponding path program 1 times [2023-08-30 11:42:39,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:42:39,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234359454] [2023-08-30 11:42:39,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:39,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:42:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:42:39,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:42:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234359454] [2023-08-30 11:42:39,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234359454] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:42:39,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948380063] [2023-08-30 11:42:39,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:42:39,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:42:39,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:42:39,046 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:42:39,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:42:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:42:39,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 11:42:39,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:42:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:42:39,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:42:39,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948380063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:42:39,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:42:39,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-30 11:42:39,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097151124] [2023-08-30 11:42:39,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:42:39,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:42:39,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:42:39,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:42:39,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:42:39,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 381 [2023-08-30 11:42:39,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:42:39,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:42:39,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 381 [2023-08-30 11:42:39,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:01,585 INFO L130 PetriNetUnfolder]: 360229/430718 cut-off events. [2023-08-30 11:43:01,586 INFO L131 PetriNetUnfolder]: For 35468/35468 co-relation queries the response was YES. [2023-08-30 11:43:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 918077 conditions, 430718 events. 360229/430718 cut-off events. For 35468/35468 co-relation queries the response was YES. Maximal size of possible extension queue 18138. Compared 2341593 event pairs, 233204 based on Foata normal form. 1/186919 useless extension candidates. Maximal degree in co-relation 918068. Up to 429518 conditions per place. [2023-08-30 11:43:03,439 INFO L137 encePairwiseOnDemand]: 378/381 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-30 11:43:03,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 52 transitions, 240 flow [2023-08-30 11:43:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:43:03,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:43:03,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 563 transitions. [2023-08-30 11:43:03,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4925634295713036 [2023-08-30 11:43:03,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 563 transitions. [2023-08-30 11:43:03,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 563 transitions. [2023-08-30 11:43:03,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:03,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 563 transitions. [2023-08-30 11:43:03,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.66666666666666) internal successors, (563), 3 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:03,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:03,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 381.0) internal successors, (1524), 4 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:03,444 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 140 flow. Second operand 3 states and 563 transitions. [2023-08-30 11:43:03,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 52 transitions, 240 flow [2023-08-30 11:43:03,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 52 transitions, 236 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:43:03,472 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 144 flow [2023-08-30 11:43:03,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-08-30 11:43:03,472 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -2 predicate places. [2023-08-30 11:43:03,473 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 144 flow [2023-08-30 11:43:03,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:03,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:03,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:43:03,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:43:03,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:03,677 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:43:03,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash 294645634, now seen corresponding path program 1 times [2023-08-30 11:43:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:03,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750885150] [2023-08-30 11:43:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:43:03,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750885150] [2023-08-30 11:43:03,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750885150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:43:03,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176036286] [2023-08-30 11:43:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:03,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:03,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:03,724 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:43:03,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:43:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:03,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 11:43:03,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:43:03,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:03,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:43:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:43:03,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176036286] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:43:03,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:43:03,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 12 [2023-08-30 11:43:03,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295519965] [2023-08-30 11:43:03,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:43:03,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 11:43:03,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:03,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 11:43:03,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-08-30 11:43:04,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 381 [2023-08-30 11:43:04,071 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 144 flow. Second operand has 13 states, 13 states have (on average 165.69230769230768) internal successors, (2154), 13 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:04,071 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:04,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 381 [2023-08-30 11:43:04,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:43:30,308 INFO L130 PetriNetUnfolder]: 383907/460566 cut-off events. [2023-08-30 11:43:30,308 INFO L131 PetriNetUnfolder]: For 11815/11815 co-relation queries the response was YES. [2023-08-30 11:43:30,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 976323 conditions, 460566 events. 383907/460566 cut-off events. For 11815/11815 co-relation queries the response was YES. Maximal size of possible extension queue 18084. Compared 2643370 event pairs, 76915 based on Foata normal form. 1062/211702 useless extension candidates. Maximal degree in co-relation 976312. Up to 134231 conditions per place. [2023-08-30 11:43:32,568 INFO L137 encePairwiseOnDemand]: 370/381 looper letters, 304 selfloop transitions, 14 changer transitions 0/320 dead transitions. [2023-08-30 11:43:32,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 320 transitions, 1388 flow [2023-08-30 11:43:32,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 11:43:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 11:43:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2470 transitions. [2023-08-30 11:43:32,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49868766404199477 [2023-08-30 11:43:32,573 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2470 transitions. [2023-08-30 11:43:32,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2470 transitions. [2023-08-30 11:43:32,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:43:32,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2470 transitions. [2023-08-30 11:43:32,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.0) internal successors, (2470), 13 states have internal predecessors, (2470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:32,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 381.0) internal successors, (5334), 14 states have internal predecessors, (5334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:32,582 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 381.0) internal successors, (5334), 14 states have internal predecessors, (5334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:32,582 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 144 flow. Second operand 13 states and 2470 transitions. [2023-08-30 11:43:32,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 320 transitions, 1388 flow [2023-08-30 11:43:32,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 320 transitions, 1384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:43:32,597 INFO L231 Difference]: Finished difference. Result has 80 places, 61 transitions, 270 flow [2023-08-30 11:43:32,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=381, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=270, PETRI_PLACES=80, PETRI_TRANSITIONS=61} [2023-08-30 11:43:32,597 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 17 predicate places. [2023-08-30 11:43:32,598 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 61 transitions, 270 flow [2023-08-30 11:43:32,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 165.69230769230768) internal successors, (2154), 13 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:32,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:43:32,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:43:32,605 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:43:32,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:43:32,803 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-30 11:43:32,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:43:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash 735096487, now seen corresponding path program 1 times [2023-08-30 11:43:32,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:43:32,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480056335] [2023-08-30 11:43:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:43:32,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:43:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:43:32,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:43:32,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:43:32,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480056335] [2023-08-30 11:43:32,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480056335] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:43:32,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:43:32,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:43:32,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935733180] [2023-08-30 11:43:32,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:43:32,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:43:32,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:43:32,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:43:32,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:43:32,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 174 out of 381 [2023-08-30 11:43:32,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 61 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:43:32,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:43:32,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 174 of 381 [2023-08-30 11:43:32,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand