./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.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 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 07:55:34,861 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 07:55:34,863 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 07:55:34,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 07:55:34,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 07:55:34,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 07:55:34,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 07:55:34,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 07:55:34,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 07:55:34,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 07:55:34,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 07:55:34,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 07:55:34,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 07:55:34,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 07:55:34,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 07:55:34,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 07:55:34,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 07:55:34,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 07:55:34,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 07:55:34,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 07:55:34,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 07:55:34,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 07:55:34,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 07:55:34,941 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 07:55:34,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 07:55:34,947 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 07:55:34,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 07:55:34,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 07:55:34,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 07:55:34,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 07:55:34,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 07:55:34,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 07:55:34,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 07:55:34,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 07:55:34,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 07:55:34,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 07:55:34,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 07:55:34,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 07:55:34,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 07:55:34,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 07:55:34,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 07:55:34,962 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 07:55:34,987 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 07:55:34,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 07:55:34,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 07:55:34,990 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 07:55:34,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 07:55:34,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 07:55:34,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 07:55:34,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 07:55:34,992 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 07:55:34,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 07:55:34,993 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 07:55:34,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 07:55:34,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 07:55:34,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 07:55:34,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 07:55:34,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 07:55:34,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 07:55:34,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 07:55:34,994 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 07:55:34,995 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 07:55:34,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 07:55:34,995 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 07:55:34,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 07:55:34,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 07:55:34,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 07:55:34,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 07:55:34,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:55:34,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 07:55:34,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 07:55:34,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 07:55:34,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 07:55:34,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 07:55:34,997 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 07:55:34,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 07:55:34,997 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 07:55:34,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 07:55:34,998 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 07:55:34,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ceec73f9e554c485344f34d2b1865bfa0707ac614302bf3f054f6fb35398f61 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 07:55:35,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 07:55:35,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 07:55:35,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 07:55:35,334 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 07:55:35,335 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 07:55:35,336 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-09-01 07:55:36,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 07:55:36,584 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 07:55:36,584 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-buffer-mult-alt.wvr.c [2023-09-01 07:55:36,595 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25484563e/3f59659bed584d6096138dc1430a1d9a/FLAG6cb786241 [2023-09-01 07:55:36,617 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25484563e/3f59659bed584d6096138dc1430a1d9a [2023-09-01 07:55:36,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 07:55:36,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 07:55:36,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 07:55:36,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 07:55:36,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 07:55:36,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20feb0a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36, skipping insertion in model container [2023-09-01 07:55:36,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 07:55:36,670 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 07:55:36,829 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2023-09-01 07:55:36,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:55:36,857 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 07:55:36,880 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-bad-buffer-mult-alt.wvr.c[4293,4306] [2023-09-01 07:55:36,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 07:55:36,893 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:55:36,894 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 07:55:36,899 INFO L208 MainTranslator]: Completed translation [2023-09-01 07:55:36,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36 WrapperNode [2023-09-01 07:55:36,900 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 07:55:36,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 07:55:36,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 07:55:36,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 07:55:36,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,945 INFO L138 Inliner]: procedures = 26, calls = 79, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 376 [2023-09-01 07:55:36,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 07:55:36,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 07:55:36,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 07:55:36,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 07:55:36,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,977 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 07:55:36,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 07:55:36,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 07:55:36,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 07:55:36,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (1/1) ... [2023-09-01 07:55:36,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 07:55:37,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:55:37,014 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 07:55:37,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 07:55:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 07:55:37,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 07:55:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 07:55:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 07:55:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 07:55:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 07:55:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 07:55:37,060 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 07:55:37,060 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 07:55:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 07:55:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 07:55:37,061 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 07:55:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 07:55:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 07:55:37,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 07:55:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 07:55:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 07:55:37,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 07:55:37,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 07:55:37,064 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 07:55:37,250 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 07:55:37,252 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 07:55:37,815 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 07:55:38,138 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 07:55:38,138 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 07:55:38,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:55:38 BoogieIcfgContainer [2023-09-01 07:55:38,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 07:55:38,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 07:55:38,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 07:55:38,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 07:55:38,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 07:55:36" (1/3) ... [2023-09-01 07:55:38,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec1271f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:55:38, skipping insertion in model container [2023-09-01 07:55:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 07:55:36" (2/3) ... [2023-09-01 07:55:38,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec1271f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 07:55:38, skipping insertion in model container [2023-09-01 07:55:38,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 07:55:38" (3/3) ... [2023-09-01 07:55:38,147 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-buffer-mult-alt.wvr.c [2023-09-01 07:55:38,154 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 07:55:38,162 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 07:55:38,162 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 07:55:38,163 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 07:55:38,343 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 07:55:38,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 271 transitions, 574 flow [2023-09-01 07:55:38,509 INFO L130 PetriNetUnfolder]: 19/267 cut-off events. [2023-09-01 07:55:38,510 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 07:55:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 267 events. 19/267 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 287 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-09-01 07:55:38,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 271 transitions, 574 flow [2023-09-01 07:55:38,524 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 247 transitions, 515 flow [2023-09-01 07:55:38,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 07:55:38,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 247 transitions, 515 flow [2023-09-01 07:55:38,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 247 transitions, 515 flow [2023-09-01 07:55:38,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 247 transitions, 515 flow [2023-09-01 07:55:38,602 INFO L130 PetriNetUnfolder]: 18/247 cut-off events. [2023-09-01 07:55:38,603 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:55:38,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 247 events. 18/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 0 based on Foata normal form. 0/199 useless extension candidates. Maximal degree in co-relation 224. Up to 2 conditions per place. [2023-09-01 07:55:38,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 4644 [2023-09-01 07:55:53,078 INFO L134 LiptonReduction]: Checked pairs total: 9440 [2023-09-01 07:55:53,078 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-09-01 07:55:53,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 07:55:53,094 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;@7234fed8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 07:55:53,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-09-01 07:55:53,096 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 07:55:53,096 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:55:53,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:55:53,097 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 07:55:53,097 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:55:53,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:55:53,101 INFO L85 PathProgramCache]: Analyzing trace with hash 44345, now seen corresponding path program 1 times [2023-09-01 07:55:53,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:55:53,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179663719] [2023-09-01 07:55:53,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:55:53,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:55:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:55:53,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:55:53,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:55:53,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179663719] [2023-09-01 07:55:53,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179663719] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:55:53,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:55:53,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:55:53,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508784243] [2023-09-01 07:55:53,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:55:53,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:55:53,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:55:53,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:55:53,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:55:53,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-09-01 07:55:53,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:55:53,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:55:53,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-09-01 07:55:53,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:03,862 INFO L130 PetriNetUnfolder]: 90903/113049 cut-off events. [2023-09-01 07:56:03,862 INFO L131 PetriNetUnfolder]: For 1376/1376 co-relation queries the response was YES. [2023-09-01 07:56:04,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227446 conditions, 113049 events. 90903/113049 cut-off events. For 1376/1376 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 667550 event pairs, 60600 based on Foata normal form. 0/34898 useless extension candidates. Maximal degree in co-relation 102115. Up to 55401 conditions per place. [2023-09-01 07:56:04,593 INFO L137 encePairwiseOnDemand]: 506/522 looper letters, 93 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-09-01 07:56:04,594 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 103 transitions, 442 flow [2023-09-01 07:56:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:56:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:56:04,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2023-09-01 07:56:04,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4789272030651341 [2023-09-01 07:56:04,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2023-09-01 07:56:04,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2023-09-01 07:56:04,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:04,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2023-09-01 07:56:04,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:04,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:04,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:04,624 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 750 transitions. [2023-09-01 07:56:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 103 transitions, 442 flow [2023-09-01 07:56:04,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 416 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 07:56:04,842 INFO L231 Difference]: Finished difference. Result has 61 places, 60 transitions, 158 flow [2023-09-01 07:56:04,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=61, PETRI_TRANSITIONS=60} [2023-09-01 07:56:04,854 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-09-01 07:56:04,855 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 60 transitions, 158 flow [2023-09-01 07:56:04,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:04,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:04,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:56:04,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 07:56:04,857 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:04,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:04,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1376942, now seen corresponding path program 1 times [2023-09-01 07:56:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:04,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093973604] [2023-09-01 07:56:04,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:04,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:04,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:04,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:04,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093973604] [2023-09-01 07:56:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093973604] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:56:04,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:56:04,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:56:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948214505] [2023-09-01 07:56:04,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:56:04,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:56:04,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:04,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:56:04,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:56:04,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-09-01 07:56:04,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 60 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:04,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:04,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-09-01 07:56:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:13,636 INFO L130 PetriNetUnfolder]: 90903/113047 cut-off events. [2023-09-01 07:56:13,637 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:56:13,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226015 conditions, 113047 events. 90903/113047 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9860. Compared 667089 event pairs, 60600 based on Foata normal form. 0/34895 useless extension candidates. Maximal degree in co-relation 112996. Up to 110793 conditions per place. [2023-09-01 07:56:14,246 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 51 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-09-01 07:56:14,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 254 flow [2023-09-01 07:56:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:56:14,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:56:14,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2023-09-01 07:56:14,250 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367816091954023 [2023-09-01 07:56:14,250 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2023-09-01 07:56:14,250 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2023-09-01 07:56:14,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:14,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2023-09-01 07:56:14,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:14,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:14,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:14,257 INFO L175 Difference]: Start difference. First operand has 61 places, 60 transitions, 158 flow. Second operand 3 states and 684 transitions. [2023-09-01 07:56:14,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 254 flow [2023-09-01 07:56:14,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:56:14,259 INFO L231 Difference]: Finished difference. Result has 59 places, 58 transitions, 144 flow [2023-09-01 07:56:14,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=59, PETRI_TRANSITIONS=58} [2023-09-01 07:56:14,260 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -13 predicate places. [2023-09-01 07:56:14,260 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 58 transitions, 144 flow [2023-09-01 07:56:14,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:14,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:14,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 07:56:14,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 07:56:14,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:14,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:14,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1376954, now seen corresponding path program 1 times [2023-09-01 07:56:14,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:14,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250015778] [2023-09-01 07:56:14,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:14,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:14,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:14,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250015778] [2023-09-01 07:56:14,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250015778] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:56:14,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807058462] [2023-09-01 07:56:14,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:14,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:14,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:56:14,320 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:56:14,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 07:56:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:14,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 07:56:14,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:56:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:14,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:56:14,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:14,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807058462] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:56:14,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:56:14,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 07:56:14,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695196728] [2023-09-01 07:56:14,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:56:14,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 07:56:14,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 07:56:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 07:56:14,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-09-01 07:56:14,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 144 flow. Second operand has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:14,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:14,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-09-01 07:56:14,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:56:35,943 INFO L130 PetriNetUnfolder]: 227256/282613 cut-off events. [2023-09-01 07:56:35,943 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 07:56:36,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565009 conditions, 282613 events. 227256/282613 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19990. Compared 1796789 event pairs, 151500 based on Foata normal form. 0/87259 useless extension candidates. Maximal degree in co-relation 565001. Up to 55399 conditions per place. [2023-09-01 07:56:37,517 INFO L137 encePairwiseOnDemand]: 516/522 looper letters, 220 selfloop transitions, 13 changer transitions 0/239 dead transitions. [2023-09-01 07:56:37,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 239 transitions, 1022 flow [2023-09-01 07:56:37,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 07:56:37,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 07:56:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1505 transitions. [2023-09-01 07:56:37,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48052362707535123 [2023-09-01 07:56:37,522 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1505 transitions. [2023-09-01 07:56:37,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1505 transitions. [2023-09-01 07:56:37,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:56:37,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1505 transitions. [2023-09-01 07:56:37,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 250.83333333333334) internal successors, (1505), 6 states have internal predecessors, (1505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:37,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:37,533 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:37,533 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 144 flow. Second operand 6 states and 1505 transitions. [2023-09-01 07:56:37,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 239 transitions, 1022 flow [2023-09-01 07:56:37,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 239 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:56:37,710 INFO L231 Difference]: Finished difference. Result has 66 places, 67 transitions, 236 flow [2023-09-01 07:56:37,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=66, PETRI_TRANSITIONS=67} [2023-09-01 07:56:37,711 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-09-01 07:56:37,711 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 67 transitions, 236 flow [2023-09-01 07:56:37,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 212.14285714285714) internal successors, (1485), 7 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:37,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:56:37,712 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 07:56:37,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 07:56:37,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:37,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:56:37,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:56:37,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1926962555, now seen corresponding path program 2 times [2023-09-01 07:56:37,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:56:37,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996171576] [2023-09-01 07:56:37,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:56:37,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:56:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:56:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:56:38,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:56:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996171576] [2023-09-01 07:56:38,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996171576] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:56:38,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090934676] [2023-09-01 07:56:38,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 07:56:38,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:56:38,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:56:38,148 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:56:38,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 07:56:38,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 07:56:38,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 07:56:38,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 07:56:38,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:56:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-09-01 07:56:38,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 07:56:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090934676] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:56:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 07:56:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 07:56:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205467306] [2023-09-01 07:56:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:56:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:56:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:56:38,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:56:38,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 07:56:38,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 522 [2023-09-01 07:56:38,341 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 67 transitions, 236 flow. Second operand has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:56:38,341 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:56:38,341 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 522 [2023-09-01 07:56:38,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:57:00,788 INFO L130 PetriNetUnfolder]: 227256/282612 cut-off events. [2023-09-01 07:57:00,788 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 07:57:01,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565036 conditions, 282612 events. 227256/282612 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 19738. Compared 1798450 event pairs, 151500 based on Foata normal form. 1/87236 useless extension candidates. Maximal degree in co-relation 565024. Up to 276972 conditions per place. [2023-09-01 07:57:02,388 INFO L137 encePairwiseOnDemand]: 519/522 looper letters, 54 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-09-01 07:57:02,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 346 flow [2023-09-01 07:57:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:57:02,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:57:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 688 transitions. [2023-09-01 07:57:02,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4393358876117497 [2023-09-01 07:57:02,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 688 transitions. [2023-09-01 07:57:02,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 688 transitions. [2023-09-01 07:57:02,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:57:02,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 688 transitions. [2023-09-01 07:57:02,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:02,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:02,397 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:02,398 INFO L175 Difference]: Start difference. First operand has 66 places, 67 transitions, 236 flow. Second operand 3 states and 688 transitions. [2023-09-01 07:57:02,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 346 flow [2023-09-01 07:57:02,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 66 transitions, 327 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 07:57:02,400 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 219 flow [2023-09-01 07:57:02,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-09-01 07:57:02,401 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -6 predicate places. [2023-09-01 07:57:02,401 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 219 flow [2023-09-01 07:57:02,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:02,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:57:02,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:57:02,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 07:57:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 07:57:02,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:57:02,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:57:02,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1920836304, now seen corresponding path program 1 times [2023-09-01 07:57:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:57:02,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787458011] [2023-09-01 07:57:02,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:57:02,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:57:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:57:02,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:57:02,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:57:02,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787458011] [2023-09-01 07:57:02,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787458011] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:57:02,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:57:02,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 07:57:02,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30881568] [2023-09-01 07:57:02,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:57:02,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 07:57:02,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:57:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 07:57:02,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 07:57:02,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 522 [2023-09-01 07:57:02,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:02,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:57:02,671 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 522 [2023-09-01 07:57:02,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:57:31,920 INFO L130 PetriNetUnfolder]: 296791/377172 cut-off events. [2023-09-01 07:57:31,920 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 07:57:32,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758872 conditions, 377172 events. 296791/377172 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25830. Compared 2684212 event pairs, 90805 based on Foata normal form. 0/123717 useless extension candidates. Maximal degree in co-relation 758859. Up to 225566 conditions per place. [2023-09-01 07:57:33,996 INFO L137 encePairwiseOnDemand]: 518/522 looper letters, 97 selfloop transitions, 2 changer transitions 0/105 dead transitions. [2023-09-01 07:57:33,996 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 105 transitions, 502 flow [2023-09-01 07:57:33,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 07:57:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 07:57:33,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 737 transitions. [2023-09-01 07:57:33,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4706257982120051 [2023-09-01 07:57:33,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 737 transitions. [2023-09-01 07:57:33,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 737 transitions. [2023-09-01 07:57:33,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:57:33,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 737 transitions. [2023-09-01 07:57:34,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.66666666666666) internal successors, (737), 3 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:34,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:34,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:34,004 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 219 flow. Second operand 3 states and 737 transitions. [2023-09-01 07:57:34,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 105 transitions, 502 flow [2023-09-01 07:57:34,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 105 transitions, 490 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 07:57:34,008 INFO L231 Difference]: Finished difference. Result has 67 places, 67 transitions, 221 flow [2023-09-01 07:57:34,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=221, PETRI_PLACES=67, PETRI_TRANSITIONS=67} [2023-09-01 07:57:34,009 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-09-01 07:57:34,009 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 67 transitions, 221 flow [2023-09-01 07:57:34,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:34,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:57:34,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 07:57:34,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 07:57:34,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:57:34,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:57:34,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1920836456, now seen corresponding path program 1 times [2023-09-01 07:57:34,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:57:34,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569275964] [2023-09-01 07:57:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:57:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:57:34,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:57:34,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:57:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:57:34,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569275964] [2023-09-01 07:57:34,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569275964] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 07:57:34,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 07:57:34,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 07:57:34,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720262783] [2023-09-01 07:57:34,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 07:57:34,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 07:57:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:57:34,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 07:57:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 07:57:34,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 522 [2023-09-01 07:57:34,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 67 transitions, 221 flow. Second operand has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:57:34,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:57:34,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 522 [2023-09-01 07:57:34,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 07:58:06,674 INFO L130 PetriNetUnfolder]: 314091/402268 cut-off events. [2023-09-01 07:58:06,675 INFO L131 PetriNetUnfolder]: For 19636/19636 co-relation queries the response was YES. [2023-09-01 07:58:07,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837174 conditions, 402268 events. 314091/402268 cut-off events. For 19636/19636 co-relation queries the response was YES. Maximal size of possible extension queue 28006. Compared 2901999 event pairs, 239665 based on Foata normal form. 0/145562 useless extension candidates. Maximal degree in co-relation 837160. Up to 373946 conditions per place. [2023-09-01 07:58:08,978 INFO L137 encePairwiseOnDemand]: 511/522 looper letters, 96 selfloop transitions, 3 changer transitions 0/105 dead transitions. [2023-09-01 07:58:08,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 530 flow [2023-09-01 07:58:08,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 07:58:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 07:58:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 920 transitions. [2023-09-01 07:58:08,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44061302681992337 [2023-09-01 07:58:08,981 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 920 transitions. [2023-09-01 07:58:08,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 920 transitions. [2023-09-01 07:58:08,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 07:58:08,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 920 transitions. [2023-09-01 07:58:08,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 230.0) internal successors, (920), 4 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:58:08,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:58:08,986 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:58:08,986 INFO L175 Difference]: Start difference. First operand has 67 places, 67 transitions, 221 flow. Second operand 4 states and 920 transitions. [2023-09-01 07:58:08,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 530 flow [2023-09-01 07:58:08,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 528 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 07:58:08,997 INFO L231 Difference]: Finished difference. Result has 70 places, 67 transitions, 242 flow [2023-09-01 07:58:08,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=70, PETRI_TRANSITIONS=67} [2023-09-01 07:58:08,998 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2023-09-01 07:58:08,998 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 67 transitions, 242 flow [2023-09-01 07:58:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.25) internal successors, (833), 4 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:58:08,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 07:58:08,999 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-09-01 07:58:08,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 07:58:09,000 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-09-01 07:58:09,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 07:58:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash 575022788, now seen corresponding path program 1 times [2023-09-01 07:58:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 07:58:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810306736] [2023-09-01 07:58:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:58:09,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 07:58:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:58:09,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:58:09,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 07:58:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810306736] [2023-09-01 07:58:09,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810306736] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 07:58:09,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461689381] [2023-09-01 07:58:09,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 07:58:09,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 07:58:09,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 07:58:09,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 07:58:09,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 07:58:09,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 07:58:09,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 07:58:09,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 07:58:09,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:58:09,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 07:58:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 07:58:09,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461689381] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 07:58:09,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 07:58:09,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-09-01 07:58:09,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786908257] [2023-09-01 07:58:09,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 07:58:09,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 07:58:09,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 07:58:09,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 07:58:09,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-09-01 07:58:09,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-09-01 07:58:09,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 212.15384615384616) internal successors, (2758), 13 states have internal predecessors, (2758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 07:58:09,373 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 07:58:09,373 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-09-01 07:58:09,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand