./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-three-array-max.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-three-array-max.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 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad --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 08:34:34,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 08:34:34,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 08:34:34,779 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 08:34:34,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 08:34:34,782 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 08:34:34,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 08:34:34,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 08:34:34,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 08:34:34,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 08:34:34,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 08:34:34,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 08:34:34,797 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 08:34:34,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 08:34:34,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 08:34:34,805 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 08:34:34,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 08:34:34,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 08:34:34,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 08:34:34,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 08:34:34,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 08:34:34,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 08:34:34,825 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 08:34:34,826 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 08:34:34,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 08:34:34,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 08:34:34,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 08:34:34,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 08:34:34,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 08:34:34,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 08:34:34,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 08:34:34,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 08:34:34,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 08:34:34,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 08:34:34,841 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 08:34:34,842 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 08:34:34,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 08:34:34,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 08:34:34,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 08:34:34,843 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 08:34:34,844 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 08:34:34,845 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 08:34:34,878 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 08:34:34,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 08:34:34,880 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 08:34:34,880 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 08:34:34,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 08:34:34,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 08:34:34,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 08:34:34,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 08:34:34,882 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 08:34:34,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 08:34:34,883 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 08:34:34,883 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 08:34:34,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 08:34:34,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 08:34:34,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 08:34:34,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 08:34:34,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 08:34:34,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 08:34:34,884 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 08:34:34,884 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 08:34:34,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 08:34:34,885 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 08:34:34,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 08:34:34,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 08:34:34,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 08:34:34,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 08:34:34,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:34:34,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 08:34:34,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 08:34:34,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 08:34:34,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 08:34:34,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 08:34:34,887 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 08:34:34,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 08:34:34,888 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 08:34:34,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 08:34:34,888 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 08:34:34,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 306d85d0b5300749928a8392783cd7ec5acf0c4622b6bdba80c3589786dd98ad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 08:34:35,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 08:34:35,213 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 08:34:35,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 08:34:35,217 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 08:34:35,218 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 08:34:35,219 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-09-01 08:34:36,326 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 08:34:36,568 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 08:34:36,569 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-three-array-max.wvr.c [2023-09-01 08:34:36,577 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1819f2da9/4e4ec13ab45f4828880d80223ff44831/FLAG106cacb55 [2023-09-01 08:34:36,593 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1819f2da9/4e4ec13ab45f4828880d80223ff44831 [2023-09-01 08:34:36,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 08:34:36,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 08:34:36,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 08:34:36,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 08:34:36,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 08:34:36,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,607 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9ca2ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36, skipping insertion in model container [2023-09-01 08:34:36,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 08:34:36,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 08:34:36,804 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-three-array-max.wvr.c[2823,2836] [2023-09-01 08:34:36,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:34:36,826 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 08:34:36,868 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-three-array-max.wvr.c[2823,2836] [2023-09-01 08:34:36,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 08:34:36,888 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:34:36,889 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 08:34:36,895 INFO L208 MainTranslator]: Completed translation [2023-09-01 08:34:36,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36 WrapperNode [2023-09-01 08:34:36,895 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 08:34:36,897 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 08:34:36,897 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 08:34:36,897 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 08:34:36,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,965 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 288 [2023-09-01 08:34:36,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 08:34:36,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 08:34:36,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 08:34:36,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 08:34:36,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:36,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:37,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:37,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:37,030 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:37,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:37,039 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 08:34:37,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 08:34:37,041 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 08:34:37,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 08:34:37,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (1/1) ... [2023-09-01 08:34:37,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 08:34:37,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:37,070 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 08:34:37,098 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 08:34:37,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 08:34:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 08:34:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 08:34:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 08:34:37,118 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 08:34:37,118 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 08:34:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 08:34:37,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 08:34:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 08:34:37,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 08:34:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 08:34:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 08:34:37,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 08:34:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 08:34:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 08:34:37,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 08:34:37,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 08:34:37,122 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 08:34:37,263 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 08:34:37,278 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 08:34:37,846 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 08:34:38,169 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 08:34:38,170 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 08:34:38,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:38 BoogieIcfgContainer [2023-09-01 08:34:38,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 08:34:38,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 08:34:38,176 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 08:34:38,179 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 08:34:38,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 08:34:36" (1/3) ... [2023-09-01 08:34:38,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acdfd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:34:38, skipping insertion in model container [2023-09-01 08:34:38,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 08:34:36" (2/3) ... [2023-09-01 08:34:38,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1acdfd7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 08:34:38, skipping insertion in model container [2023-09-01 08:34:38,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 08:34:38" (3/3) ... [2023-09-01 08:34:38,182 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-three-array-max.wvr.c [2023-09-01 08:34:38,189 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 08:34:38,197 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 08:34:38,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 08:34:38,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 08:34:38,341 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 08:34:38,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 338 places, 359 transitions, 742 flow [2023-09-01 08:34:38,548 INFO L130 PetriNetUnfolder]: 31/356 cut-off events. [2023-09-01 08:34:38,548 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:34:38,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 369 conditions, 356 events. 31/356 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 418 event pairs, 0 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-09-01 08:34:38,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 338 places, 359 transitions, 742 flow [2023-09-01 08:34:38,568 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:38,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 08:34:38,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:38,581 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:38,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 335 transitions, 688 flow [2023-09-01 08:34:38,630 INFO L130 PetriNetUnfolder]: 30/335 cut-off events. [2023-09-01 08:34:38,631 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 08:34:38,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348 conditions, 335 events. 30/335 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 419 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 272. Up to 3 conditions per place. [2023-09-01 08:34:38,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 4714 [2023-09-01 08:34:56,078 INFO L134 LiptonReduction]: Checked pairs total: 8688 [2023-09-01 08:34:56,078 INFO L136 LiptonReduction]: Total number of compositions: 386 [2023-09-01 08:34:56,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 08:34:56,095 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;@79a81a0c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 08:34:56,095 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2023-09-01 08:34:56,097 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 08:34:56,104 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 08:34:56,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:56,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 08:34:56,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:34:56,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:56,109 INFO L85 PathProgramCache]: Analyzing trace with hash 47728, now seen corresponding path program 1 times [2023-09-01 08:34:56,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:56,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602547797] [2023-09-01 08:34:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:56,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:56,363 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 08:34:56,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:56,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602547797] [2023-09-01 08:34:56,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602547797] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:56,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:56,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 08:34:56,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741931768] [2023-09-01 08:34:56,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:56,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:56,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:56,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:56,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:56,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-09-01 08:34:56,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:56,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:56,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-09-01 08:34:56,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:57,828 INFO L130 PetriNetUnfolder]: 7903/10259 cut-off events. [2023-09-01 08:34:57,829 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-09-01 08:34:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20817 conditions, 10259 events. 7903/10259 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50743 event pairs, 4208 based on Foata normal form. 0/4235 useless extension candidates. Maximal degree in co-relation 9320. Up to 5058 conditions per place. [2023-09-01 08:34:57,925 INFO L137 encePairwiseOnDemand]: 725/745 looper letters, 95 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-09-01 08:34:57,926 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 448 flow [2023-09-01 08:34:57,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1068 transitions. [2023-09-01 08:34:57,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778523489932886 [2023-09-01 08:34:57,947 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1068 transitions. [2023-09-01 08:34:57,947 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1068 transitions. [2023-09-01 08:34:57,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:57,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1068 transitions. [2023-09-01 08:34:57,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 356.0) internal successors, (1068), 3 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:57,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:57,971 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:57,973 INFO L175 Difference]: Start difference. First operand has 68 places, 66 transitions, 150 flow. Second operand 3 states and 1068 transitions. [2023-09-01 08:34:57,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 448 flow [2023-09-01 08:34:57,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 105 transitions, 424 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 08:34:57,999 INFO L231 Difference]: Finished difference. Result has 58 places, 63 transitions, 178 flow [2023-09-01 08:34:58,001 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=58, PETRI_TRANSITIONS=63} [2023-09-01 08:34:58,004 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-09-01 08:34:58,004 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 63 transitions, 178 flow [2023-09-01 08:34:58,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 315.6666666666667) internal successors, (947), 3 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:58,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:58,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:34:58,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 08:34:58,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:34:58,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:58,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1480951, now seen corresponding path program 1 times [2023-09-01 08:34:58,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:58,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931043862] [2023-09-01 08:34:58,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:58,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:58,090 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 08:34:58,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:58,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931043862] [2023-09-01 08:34:58,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931043862] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:34:58,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:34:58,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:34:58,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653058598] [2023-09-01 08:34:58,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:34:58,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:34:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:34:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:34:58,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-09-01 08:34:58,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:58,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:58,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-09-01 08:34:58,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:34:59,356 INFO L130 PetriNetUnfolder]: 7903/10256 cut-off events. [2023-09-01 08:34:59,357 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-09-01 08:34:59,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20546 conditions, 10256 events. 7903/10256 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 50867 event pairs, 4208 based on Foata normal form. 0/4221 useless extension candidates. Maximal degree in co-relation 10253. Up to 10104 conditions per place. [2023-09-01 08:34:59,414 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 55 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2023-09-01 08:34:59,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 60 transitions, 278 flow [2023-09-01 08:34:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:34:59,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:34:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 999 transitions. [2023-09-01 08:34:59,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4469798657718121 [2023-09-01 08:34:59,418 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 999 transitions. [2023-09-01 08:34:59,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 999 transitions. [2023-09-01 08:34:59,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:34:59,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 999 transitions. [2023-09-01 08:34:59,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 333.0) internal successors, (999), 3 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:59,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:59,427 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:59,427 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 178 flow. Second operand 3 states and 999 transitions. [2023-09-01 08:34:59,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 60 transitions, 278 flow [2023-09-01 08:34:59,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 60 transitions, 266 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:34:59,430 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 156 flow [2023-09-01 08:34:59,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-09-01 08:34:59,431 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -13 predicate places. [2023-09-01 08:34:59,432 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 156 flow [2023-09-01 08:34:59,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 316.0) internal successors, (948), 3 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:59,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:34:59,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 08:34:59,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 08:34:59,434 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:34:59,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:34:59,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1480949, now seen corresponding path program 1 times [2023-09-01 08:34:59,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:34:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940421914] [2023-09-01 08:34:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:59,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:34:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:59,532 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 08:34:59,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:34:59,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940421914] [2023-09-01 08:34:59,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940421914] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:34:59,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808316782] [2023-09-01 08:34:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:34:59,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:34:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:34:59,536 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 08:34:59,551 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 08:34:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:34:59,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 08:34:59,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:34:59,720 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 08:34:59,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:34:59,735 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 08:34:59,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808316782] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:34:59,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:34:59,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-09-01 08:34:59,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286723240] [2023-09-01 08:34:59,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:34:59,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 08:34:59,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:34:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 08:34:59,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 08:34:59,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 745 [2023-09-01 08:34:59,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 156 flow. Second operand has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:34:59,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:34:59,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 745 [2023-09-01 08:34:59,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:02,389 INFO L130 PetriNetUnfolder]: 19756/25634 cut-off events. [2023-09-01 08:35:02,390 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2023-09-01 08:35:02,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51327 conditions, 25634 events. 19756/25634 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141218 event pairs, 10520 based on Foata normal form. 0/10621 useless extension candidates. Maximal degree in co-relation 51319. Up to 5056 conditions per place. [2023-09-01 08:35:02,541 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 218 selfloop transitions, 21 changer transitions 0/243 dead transitions. [2023-09-01 08:35:02,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 243 transitions, 1054 flow [2023-09-01 08:35:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2138 transitions. [2023-09-01 08:35:02,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47829977628635345 [2023-09-01 08:35:02,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2138 transitions. [2023-09-01 08:35:02,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2138 transitions. [2023-09-01 08:35:02,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:02,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2138 transitions. [2023-09-01 08:35:02,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 356.3333333333333) internal successors, (2138), 6 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:02,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:02,562 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:02,562 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 156 flow. Second operand 6 states and 2138 transitions. [2023-09-01 08:35:02,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 243 transitions, 1054 flow [2023-09-01 08:35:02,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 243 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:02,569 INFO L231 Difference]: Finished difference. Result has 62 places, 75 transitions, 305 flow [2023-09-01 08:35:02,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=305, PETRI_PLACES=62, PETRI_TRANSITIONS=75} [2023-09-01 08:35:02,571 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -6 predicate places. [2023-09-01 08:35:02,571 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 75 transitions, 305 flow [2023-09-01 08:35:02,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 316.14285714285717) internal successors, (2213), 7 states have internal predecessors, (2213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:02,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:02,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 08:35:02,581 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 08:35:02,779 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 08:35:02,779 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:02,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash 45951744, now seen corresponding path program 1 times [2023-09-01 08:35:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355340815] [2023-09-01 08:35:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:02,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:02,939 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 08:35:02,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:02,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355340815] [2023-09-01 08:35:02,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355340815] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:02,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:02,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:02,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946205392] [2023-09-01 08:35:02,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:02,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:02,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:02,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:02,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:02,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 745 [2023-09-01 08:35:02,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 75 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:02,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:02,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 745 [2023-09-01 08:35:02,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:05,269 INFO L130 PetriNetUnfolder]: 19755/25633 cut-off events. [2023-09-01 08:35:05,269 INFO L131 PetriNetUnfolder]: For 139/139 co-relation queries the response was YES. [2023-09-01 08:35:05,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51375 conditions, 25633 events. 19755/25633 cut-off events. For 139/139 co-relation queries the response was YES. Maximal size of possible extension queue 1670. Compared 141483 event pairs, 10520 based on Foata normal form. 1/10550 useless extension candidates. Maximal degree in co-relation 51363. Up to 25253 conditions per place. [2023-09-01 08:35:05,418 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 68 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-09-01 08:35:05,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 74 transitions, 441 flow [2023-09-01 08:35:05,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:05,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 989 transitions. [2023-09-01 08:35:05,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4425055928411633 [2023-09-01 08:35:05,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 989 transitions. [2023-09-01 08:35:05,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 989 transitions. [2023-09-01 08:35:05,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:05,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 989 transitions. [2023-09-01 08:35:05,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 329.6666666666667) internal successors, (989), 3 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:05,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:05,431 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:05,431 INFO L175 Difference]: Start difference. First operand has 62 places, 75 transitions, 305 flow. Second operand 3 states and 989 transitions. [2023-09-01 08:35:05,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 74 transitions, 441 flow [2023-09-01 08:35:05,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 74 transitions, 411 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:05,435 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 275 flow [2023-09-01 08:35:05,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=275, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2023-09-01 08:35:05,437 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2023-09-01 08:35:05,437 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 275 flow [2023-09-01 08:35:05,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:05,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:05,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 08:35:05,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 08:35:05,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:05,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:05,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1423279047, now seen corresponding path program 1 times [2023-09-01 08:35:05,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:05,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026636457] [2023-09-01 08:35:05,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:05,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:05,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:05,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026636457] [2023-09-01 08:35:05,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026636457] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:05,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:05,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 08:35:05,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406937620] [2023-09-01 08:35:05,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:05,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:35:05,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:05,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:35:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 08:35:05,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 745 [2023-09-01 08:35:05,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 275 flow. Second operand has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:05,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:05,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 745 [2023-09-01 08:35:05,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:07,233 INFO L130 PetriNetUnfolder]: 15805/20511 cut-off events. [2023-09-01 08:35:07,233 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-09-01 08:35:07,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41110 conditions, 20511 events. 15805/20511 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110490 event pairs, 8416 based on Foata normal form. 2/8447 useless extension candidates. Maximal degree in co-relation 41097. Up to 20198 conditions per place. [2023-09-01 08:35:07,346 INFO L137 encePairwiseOnDemand]: 734/745 looper letters, 57 selfloop transitions, 12 changer transitions 0/73 dead transitions. [2023-09-01 08:35:07,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 409 flow [2023-09-01 08:35:07,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 08:35:07,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 08:35:07,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1300 transitions. [2023-09-01 08:35:07,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.436241610738255 [2023-09-01 08:35:07,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1300 transitions. [2023-09-01 08:35:07,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1300 transitions. [2023-09-01 08:35:07,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:07,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1300 transitions. [2023-09-01 08:35:07,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 325.0) internal successors, (1300), 4 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:07,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:07,362 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 745.0) internal successors, (3725), 5 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:07,363 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 275 flow. Second operand 4 states and 1300 transitions. [2023-09-01 08:35:07,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 409 flow [2023-09-01 08:35:07,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 73 transitions, 405 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:07,367 INFO L231 Difference]: Finished difference. Result has 66 places, 73 transitions, 313 flow [2023-09-01 08:35:07,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=66, PETRI_TRANSITIONS=73} [2023-09-01 08:35:07,370 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-09-01 08:35:07,370 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 73 transitions, 313 flow [2023-09-01 08:35:07,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.25) internal successors, (1245), 4 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:07,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:07,371 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 08:35:07,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 08:35:07,371 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:07,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1170711598, now seen corresponding path program 2 times [2023-09-01 08:35:07,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:07,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416623682] [2023-09-01 08:35:07,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:07,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:07,461 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 08:35:07,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416623682] [2023-09-01 08:35:07,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416623682] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:07,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010077308] [2023-09-01 08:35:07,466 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:35:07,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:07,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:07,468 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 08:35:07,471 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 08:35:07,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:35:07,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:35:07,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:35:07,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:07,591 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 08:35:07,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:35:07,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010077308] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:07,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:35:07,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-09-01 08:35:07,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499758477] [2023-09-01 08:35:07,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:07,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:07,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:07,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-09-01 08:35:07,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 745 [2023-09-01 08:35:07,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 73 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:07,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:07,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 745 [2023-09-01 08:35:07,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:09,108 INFO L130 PetriNetUnfolder]: 15805/20510 cut-off events. [2023-09-01 08:35:09,109 INFO L131 PetriNetUnfolder]: For 136/136 co-relation queries the response was YES. [2023-09-01 08:35:09,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41138 conditions, 20510 events. 15805/20510 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110426 event pairs, 8416 based on Foata normal form. 1/8447 useless extension candidates. Maximal degree in co-relation 41123. Up to 20201 conditions per place. [2023-09-01 08:35:09,253 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 63 selfloop transitions, 5 changer transitions 0/72 dead transitions. [2023-09-01 08:35:09,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 72 transitions, 439 flow [2023-09-01 08:35:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:09,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:09,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1005 transitions. [2023-09-01 08:35:09,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44966442953020136 [2023-09-01 08:35:09,257 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1005 transitions. [2023-09-01 08:35:09,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1005 transitions. [2023-09-01 08:35:09,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:09,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1005 transitions. [2023-09-01 08:35:09,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:09,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:09,264 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:09,265 INFO L175 Difference]: Start difference. First operand has 66 places, 73 transitions, 313 flow. Second operand 3 states and 1005 transitions. [2023-09-01 08:35:09,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 72 transitions, 439 flow [2023-09-01 08:35:09,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 72 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:09,268 INFO L231 Difference]: Finished difference. Result has 65 places, 72 transitions, 300 flow [2023-09-01 08:35:09,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=65, PETRI_TRANSITIONS=72} [2023-09-01 08:35:09,269 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -3 predicate places. [2023-09-01 08:35:09,269 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 72 transitions, 300 flow [2023-09-01 08:35:09,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 319.0) internal successors, (957), 3 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:09,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:09,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:09,279 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 08:35:09,475 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,SelfDestructingSolverStorable5 [2023-09-01 08:35:09,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:09,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:09,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529539, now seen corresponding path program 1 times [2023-09-01 08:35:09,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:09,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701038820] [2023-09-01 08:35:09,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:09,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:09,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:09,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701038820] [2023-09-01 08:35:09,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701038820] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:09,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148685901] [2023-09-01 08:35:09,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:09,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:09,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:09,841 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 08:35:09,873 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 08:35:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:09,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 08:35:09,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:10,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:10,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:10,072 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:10,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:10,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:10,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:10,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:10,124 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_208 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_208) c_~B~0.base) c_~B~0.offset) 4294967296)) is different from false [2023-09-01 08:35:10,165 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:10,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2023-09-01 08:35:10,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:10,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2023-09-01 08:35:10,181 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2023-09-01 08:35:10,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-09-01 08:35:10,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148685901] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:10,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:10,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:35:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725540797] [2023-09-01 08:35:10,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:10,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:10,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:10,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=81, Unknown=1, NotChecked=18, Total=132 [2023-09-01 08:35:10,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-09-01 08:35:10,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 72 transitions, 300 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:10,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:10,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-09-01 08:35:10,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:12,615 INFO L130 PetriNetUnfolder]: 15805/20506 cut-off events. [2023-09-01 08:35:12,615 INFO L131 PetriNetUnfolder]: For 143/143 co-relation queries the response was YES. [2023-09-01 08:35:12,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41122 conditions, 20506 events. 15805/20506 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110543 event pairs, 8416 based on Foata normal form. 0/8446 useless extension candidates. Maximal degree in co-relation 41107. Up to 20165 conditions per place. [2023-09-01 08:35:12,743 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 54 selfloop transitions, 13 changer transitions 0/71 dead transitions. [2023-09-01 08:35:12,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 71 transitions, 430 flow [2023-09-01 08:35:12,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:12,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:12,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1655 transitions. [2023-09-01 08:35:12,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37024608501118567 [2023-09-01 08:35:12,749 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1655 transitions. [2023-09-01 08:35:12,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1655 transitions. [2023-09-01 08:35:12,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:12,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1655 transitions. [2023-09-01 08:35:12,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.8333333333333) internal successors, (1655), 6 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:12,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:12,762 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:12,762 INFO L175 Difference]: Start difference. First operand has 65 places, 72 transitions, 300 flow. Second operand 6 states and 1655 transitions. [2023-09-01 08:35:12,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 71 transitions, 430 flow [2023-09-01 08:35:12,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 71 transitions, 420 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:12,765 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 312 flow [2023-09-01 08:35:12,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-09-01 08:35:12,766 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -1 predicate places. [2023-09-01 08:35:12,766 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 312 flow [2023-09-01 08:35:12,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:12,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:12,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:12,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:12,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:12,974 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:12,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529549, now seen corresponding path program 1 times [2023-09-01 08:35:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:12,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506885974] [2023-09-01 08:35:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:13,347 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:13,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:13,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506885974] [2023-09-01 08:35:13,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506885974] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:13,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6171322] [2023-09-01 08:35:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:13,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:13,350 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:13,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 08:35:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:13,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 08:35:13,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:13,554 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-09-01 08:35:13,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-09-01 08:35:13,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:13,640 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:35:13,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:35:13,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:13,708 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:13,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:13,726 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:13,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:13,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:13,977 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2023-09-01 08:35:13,986 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:13,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 59 [2023-09-01 08:35:13,994 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2023-09-01 08:35:14,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2023-09-01 08:35:14,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:14,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6171322] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:14,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:14,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 08:35:14,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715974499] [2023-09-01 08:35:14,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:14,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 08:35:14,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:14,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 08:35:14,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=191, Unknown=2, NotChecked=0, Total=240 [2023-09-01 08:35:16,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:35:16,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-09-01 08:35:16,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 312 flow. Second operand has 16 states, 16 states have (on average 268.1875) internal successors, (4291), 16 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:16,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:16,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-09-01 08:35:16,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:18,339 INFO L130 PetriNetUnfolder]: 15805/20502 cut-off events. [2023-09-01 08:35:18,339 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2023-09-01 08:35:18,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41121 conditions, 20502 events. 15805/20502 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110435 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41106. Up to 20165 conditions per place. [2023-09-01 08:35:18,439 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 53 selfloop transitions, 13 changer transitions 0/70 dead transitions. [2023-09-01 08:35:18,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 440 flow [2023-09-01 08:35:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:18,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:18,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1654 transitions. [2023-09-01 08:35:18,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37002237136465327 [2023-09-01 08:35:18,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1654 transitions. [2023-09-01 08:35:18,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1654 transitions. [2023-09-01 08:35:18,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:18,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1654 transitions. [2023-09-01 08:35:18,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.6666666666667) internal successors, (1654), 6 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:18,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:18,457 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:18,457 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 312 flow. Second operand 6 states and 1654 transitions. [2023-09-01 08:35:18,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 440 flow [2023-09-01 08:35:18,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 413 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:18,460 INFO L231 Difference]: Finished difference. Result has 68 places, 70 transitions, 307 flow [2023-09-01 08:35:18,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=70} [2023-09-01 08:35:18,461 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-09-01 08:35:18,461 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 70 transitions, 307 flow [2023-09-01 08:35:18,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 268.1875) internal successors, (4291), 16 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:18,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:18,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:18,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:18,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:18,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:18,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:18,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529548, now seen corresponding path program 1 times [2023-09-01 08:35:18,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:18,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552584797] [2023-09-01 08:35:18,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:18,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:18,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:19,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552584797] [2023-09-01 08:35:19,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552584797] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:19,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497927526] [2023-09-01 08:35:19,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:19,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:19,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:19,062 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:19,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 08:35:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:19,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 08:35:19,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:19,229 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2023-09-01 08:35:19,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2023-09-01 08:35:19,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:19,295 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:35:19,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:35:19,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:19,352 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:19,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:19,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 08:35:19,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:19,559 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_322) c_~A~0.base) c_~A~0.offset) 2147483648))) is different from false [2023-09-01 08:35:19,659 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:19,659 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2023-09-01 08:35:19,669 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:19,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 69 [2023-09-01 08:35:19,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2023-09-01 08:35:19,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 08:35:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-09-01 08:35:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497927526] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:19,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 08:35:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55651537] [2023-09-01 08:35:19,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:19,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 08:35:19,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:19,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 08:35:19,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=245, Unknown=2, NotChecked=32, Total=342 [2023-09-01 08:35:19,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 745 [2023-09-01 08:35:19,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 70 transitions, 307 flow. Second operand has 19 states, 19 states have (on average 256.05263157894734) internal successors, (4865), 19 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:19,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:19,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 745 [2023-09-01 08:35:19,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:21,567 INFO L130 PetriNetUnfolder]: 15805/20498 cut-off events. [2023-09-01 08:35:21,567 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-09-01 08:35:21,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41108 conditions, 20498 events. 15805/20498 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 1378. Compared 110491 event pairs, 8416 based on Foata normal form. 0/8450 useless extension candidates. Maximal degree in co-relation 41093. Up to 20165 conditions per place. [2023-09-01 08:35:21,690 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 52 selfloop transitions, 13 changer transitions 0/69 dead transitions. [2023-09-01 08:35:21,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 69 transitions, 433 flow [2023-09-01 08:35:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:21,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:21,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1581 transitions. [2023-09-01 08:35:21,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35369127516778526 [2023-09-01 08:35:21,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1581 transitions. [2023-09-01 08:35:21,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1581 transitions. [2023-09-01 08:35:21,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:21,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1581 transitions. [2023-09-01 08:35:21,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 263.5) internal successors, (1581), 6 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:21,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:21,705 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:21,706 INFO L175 Difference]: Start difference. First operand has 68 places, 70 transitions, 307 flow. Second operand 6 states and 1581 transitions. [2023-09-01 08:35:21,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 69 transitions, 433 flow [2023-09-01 08:35:21,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 69 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 08:35:21,708 INFO L231 Difference]: Finished difference. Result has 70 places, 69 transitions, 325 flow [2023-09-01 08:35:21,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=70, PETRI_TRANSITIONS=69} [2023-09-01 08:35:21,709 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-09-01 08:35:21,709 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 69 transitions, 325 flow [2023-09-01 08:35:21,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 256.05263157894734) internal successors, (4865), 19 states have internal predecessors, (4865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:21,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:21,710 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:21,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 08:35:21,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:21,916 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:21,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1970529536, now seen corresponding path program 1 times [2023-09-01 08:35:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084716149] [2023-09-01 08:35:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:22,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:22,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084716149] [2023-09-01 08:35:22,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084716149] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:22,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107523119] [2023-09-01 08:35:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:22,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:22,161 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:22,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 08:35:22,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:22,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 08:35:22,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:22,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:22,314 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:22,331 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:22,332 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:22,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:22,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:22,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:22,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-09-01 08:35:22,424 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:22,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-09-01 08:35:22,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-09-01 08:35:22,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:22,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107523119] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:22,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:22,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:35:22,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063891475] [2023-09-01 08:35:22,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:22,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:22,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:22,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:22,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=96, Unknown=2, NotChecked=0, Total=132 [2023-09-01 08:35:22,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 745 [2023-09-01 08:35:22,894 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 325 flow. Second operand has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:22,894 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:22,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 745 [2023-09-01 08:35:22,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:24,330 INFO L130 PetriNetUnfolder]: 15805/20494 cut-off events. [2023-09-01 08:35:24,330 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2023-09-01 08:35:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41107 conditions, 20494 events. 15805/20494 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 1368. Compared 110363 event pairs, 8416 based on Foata normal form. 4/8450 useless extension candidates. Maximal degree in co-relation 41092. Up to 20165 conditions per place. [2023-09-01 08:35:24,420 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 51 selfloop transitions, 13 changer transitions 0/68 dead transitions. [2023-09-01 08:35:24,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 68 transitions, 449 flow [2023-09-01 08:35:24,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 08:35:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 08:35:24,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1652 transitions. [2023-09-01 08:35:24,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36957494407158836 [2023-09-01 08:35:24,425 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1652 transitions. [2023-09-01 08:35:24,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1652 transitions. [2023-09-01 08:35:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:24,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1652 transitions. [2023-09-01 08:35:24,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:24,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:24,435 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 745.0) internal successors, (5215), 7 states have internal predecessors, (5215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:24,435 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 325 flow. Second operand 6 states and 1652 transitions. [2023-09-01 08:35:24,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 68 transitions, 449 flow [2023-09-01 08:35:24,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 409 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 08:35:24,438 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 307 flow [2023-09-01 08:35:24,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-09-01 08:35:24,440 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-09-01 08:35:24,440 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 307 flow [2023-09-01 08:35:24,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 268.25) internal successors, (3219), 12 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:24,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:24,441 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-09-01 08:35:24,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:24,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:24,649 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:24,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:24,650 INFO L85 PathProgramCache]: Analyzing trace with hash 955798492, now seen corresponding path program 1 times [2023-09-01 08:35:24,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:24,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590518046] [2023-09-01 08:35:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:24,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-09-01 08:35:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590518046] [2023-09-01 08:35:24,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590518046] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:24,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89935387] [2023-09-01 08:35:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:24,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:24,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:24,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:24,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 08:35:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:24,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 08:35:24,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:24,928 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:24,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:24,982 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:24,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89935387] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:24,982 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:24,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-09-01 08:35:24,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701437166] [2023-09-01 08:35:24,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:24,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 08:35:24,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 08:35:24,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-09-01 08:35:25,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 745 [2023-09-01 08:35:25,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 307 flow. Second operand has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:25,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:25,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 745 [2023-09-01 08:35:25,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:27,352 INFO L130 PetriNetUnfolder]: 18831/24440 cut-off events. [2023-09-01 08:35:27,352 INFO L131 PetriNetUnfolder]: For 183/183 co-relation queries the response was YES. [2023-09-01 08:35:27,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49010 conditions, 24440 events. 18831/24440 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 1497. Compared 133438 event pairs, 10030 based on Foata normal form. 2/10228 useless extension candidates. Maximal degree in co-relation 48996. Up to 15123 conditions per place. [2023-09-01 08:35:27,425 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 119 selfloop transitions, 22 changer transitions 0/145 dead transitions. [2023-09-01 08:35:27,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 145 transitions, 788 flow [2023-09-01 08:35:27,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:35:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:35:27,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2871 transitions. [2023-09-01 08:35:27,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42818791946308726 [2023-09-01 08:35:27,434 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2871 transitions. [2023-09-01 08:35:27,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2871 transitions. [2023-09-01 08:35:27,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:27,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2871 transitions. [2023-09-01 08:35:27,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 319.0) internal successors, (2871), 9 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:27,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:27,448 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:27,449 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 307 flow. Second operand 9 states and 2871 transitions. [2023-09-01 08:35:27,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 145 transitions, 788 flow [2023-09-01 08:35:27,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 145 transitions, 752 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 08:35:27,453 INFO L231 Difference]: Finished difference. Result has 73 places, 73 transitions, 368 flow [2023-09-01 08:35:27,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=368, PETRI_PLACES=73, PETRI_TRANSITIONS=73} [2023-09-01 08:35:27,454 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-09-01 08:35:27,454 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 73 transitions, 368 flow [2023-09-01 08:35:27,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 305.2857142857143) internal successors, (4274), 14 states have internal predecessors, (4274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:27,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:27,455 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1] [2023-09-01 08:35:27,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:27,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:27,661 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:27,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1575423709, now seen corresponding path program 2 times [2023-09-01 08:35:27,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:27,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855647991] [2023-09-01 08:35:27,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:27,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:27,745 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:27,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855647991] [2023-09-01 08:35:27,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855647991] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:27,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515758642] [2023-09-01 08:35:27,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:35:27,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:27,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:27,749 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:27,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 08:35:27,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 08:35:27,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:35:27,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 08:35:27,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-09-01 08:35:27,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 08:35:27,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515758642] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:27,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 08:35:27,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-09-01 08:35:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387007091] [2023-09-01 08:35:27,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:27,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 08:35:27,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 08:35:27,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-09-01 08:35:27,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 316 out of 745 [2023-09-01 08:35:27,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 73 transitions, 368 flow. Second operand has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:27,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:27,955 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 316 of 745 [2023-09-01 08:35:27,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:29,402 INFO L130 PetriNetUnfolder]: 17448/22677 cut-off events. [2023-09-01 08:35:29,403 INFO L131 PetriNetUnfolder]: For 2215/2215 co-relation queries the response was YES. [2023-09-01 08:35:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45482 conditions, 22677 events. 17448/22677 cut-off events. For 2215/2215 co-relation queries the response was YES. Maximal size of possible extension queue 1305. Compared 122414 event pairs, 9295 based on Foata normal form. 695/10232 useless extension candidates. Maximal degree in co-relation 45466. Up to 22337 conditions per place. [2023-09-01 08:35:29,510 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 65 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2023-09-01 08:35:29,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 470 flow [2023-09-01 08:35:29,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:29,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:29,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 994 transitions. [2023-09-01 08:35:29,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44474272930648767 [2023-09-01 08:35:29,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 994 transitions. [2023-09-01 08:35:29,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 994 transitions. [2023-09-01 08:35:29,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:29,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 994 transitions. [2023-09-01 08:35:29,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 331.3333333333333) internal successors, (994), 3 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:29,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:29,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:29,518 INFO L175 Difference]: Start difference. First operand has 73 places, 73 transitions, 368 flow. Second operand 3 states and 994 transitions. [2023-09-01 08:35:29,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 470 flow [2023-09-01 08:35:29,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 407 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 08:35:29,521 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 277 flow [2023-09-01 08:35:29,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=277, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-09-01 08:35:29,521 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2023-09-01 08:35:29,521 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 277 flow [2023-09-01 08:35:29,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 317.25) internal successors, (1269), 4 states have internal predecessors, (1269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:29,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:29,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:29,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:29,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 08:35:29,728 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:29,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash 282061342, now seen corresponding path program 1 times [2023-09-01 08:35:29,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:29,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683261828] [2023-09-01 08:35:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:29,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:29,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:29,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683261828] [2023-09-01 08:35:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683261828] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:29,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:29,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:29,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322504747] [2023-09-01 08:35:29,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:29,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:29,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-09-01 08:35:29,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:29,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:29,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-09-01 08:35:29,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:31,559 INFO L130 PetriNetUnfolder]: 26243/35227 cut-off events. [2023-09-01 08:35:31,560 INFO L131 PetriNetUnfolder]: For 346/346 co-relation queries the response was YES. [2023-09-01 08:35:31,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71033 conditions, 35227 events. 26243/35227 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 2011. Compared 208892 event pairs, 10010 based on Foata normal form. 0/16872 useless extension candidates. Maximal degree in co-relation 71021. Up to 19928 conditions per place. [2023-09-01 08:35:31,714 INFO L137 encePairwiseOnDemand]: 742/745 looper letters, 97 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-09-01 08:35:31,714 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 102 transitions, 543 flow [2023-09-01 08:35:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:31,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1043 transitions. [2023-09-01 08:35:31,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-09-01 08:35:31,717 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1043 transitions. [2023-09-01 08:35:31,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1043 transitions. [2023-09-01 08:35:31,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:31,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1043 transitions. [2023-09-01 08:35:31,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.6666666666667) internal successors, (1043), 3 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:31,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:31,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:31,722 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 277 flow. Second operand 3 states and 1043 transitions. [2023-09-01 08:35:31,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 102 transitions, 543 flow [2023-09-01 08:35:31,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 102 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:31,724 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 288 flow [2023-09-01 08:35:31,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=288, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2023-09-01 08:35:31,725 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-09-01 08:35:31,725 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 288 flow [2023-09-01 08:35:31,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 326.0) internal successors, (978), 3 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:31,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:31,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 08:35:31,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:31,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 282061337, now seen corresponding path program 1 times [2023-09-01 08:35:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:31,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544399054] [2023-09-01 08:35:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:31,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:31,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:31,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:31,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:31,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544399054] [2023-09-01 08:35:31,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544399054] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:31,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215939343] [2023-09-01 08:35:31,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:31,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:31,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:31,845 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:31,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 08:35:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:32,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:35:32,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:32,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:32,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:32,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:32,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215939343] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:32,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:32,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-09-01 08:35:32,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13231315] [2023-09-01 08:35:32,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:32,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:32,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:32,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:32,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:35:32,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-09-01 08:35:32,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 288 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:32,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:32,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-09-01 08:35:32,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:33,797 INFO L130 PetriNetUnfolder]: 16969/23187 cut-off events. [2023-09-01 08:35:33,797 INFO L131 PetriNetUnfolder]: For 2604/2604 co-relation queries the response was YES. [2023-09-01 08:35:33,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48638 conditions, 23187 events. 16969/23187 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 135558 event pairs, 8841 based on Foata normal form. 248/12743 useless extension candidates. Maximal degree in co-relation 48625. Up to 16918 conditions per place. [2023-09-01 08:35:33,901 INFO L137 encePairwiseOnDemand]: 731/745 looper letters, 116 selfloop transitions, 21 changer transitions 0/140 dead transitions. [2023-09-01 08:35:33,901 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 140 transitions, 713 flow [2023-09-01 08:35:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:35:33,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:35:33,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2531 transitions. [2023-09-01 08:35:33,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42466442953020134 [2023-09-01 08:35:33,905 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2531 transitions. [2023-09-01 08:35:33,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2531 transitions. [2023-09-01 08:35:33,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:33,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2531 transitions. [2023-09-01 08:35:33,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 316.375) internal successors, (2531), 8 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:33,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:33,914 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:33,915 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 288 flow. Second operand 8 states and 2531 transitions. [2023-09-01 08:35:33,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 140 transitions, 713 flow [2023-09-01 08:35:33,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 140 transitions, 710 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:33,924 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 365 flow [2023-09-01 08:35:33,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=365, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-09-01 08:35:33,925 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-09-01 08:35:33,925 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 365 flow [2023-09-01 08:35:33,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:33,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:33,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:33,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:34,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-09-01 08:35:34,132 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:34,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash -154369339, now seen corresponding path program 1 times [2023-09-01 08:35:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:34,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736329842] [2023-09-01 08:35:34,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:34,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:34,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:34,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736329842] [2023-09-01 08:35:34,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736329842] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:34,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645550707] [2023-09-01 08:35:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:34,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:34,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:34,245 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:34,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 08:35:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:34,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 08:35:34,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:34,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:34,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645550707] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:34,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:34,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-09-01 08:35:34,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386865255] [2023-09-01 08:35:34,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:34,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 08:35:34,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:34,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 08:35:34,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-09-01 08:35:34,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 745 [2023-09-01 08:35:34,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 365 flow. Second operand has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:34,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:34,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 745 [2023-09-01 08:35:34,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:36,376 INFO L130 PetriNetUnfolder]: 13627/18958 cut-off events. [2023-09-01 08:35:36,376 INFO L131 PetriNetUnfolder]: For 2926/3562 co-relation queries the response was YES. [2023-09-01 08:35:36,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43889 conditions, 18958 events. 13627/18958 cut-off events. For 2926/3562 co-relation queries the response was YES. Maximal size of possible extension queue 1290. Compared 118064 event pairs, 7331 based on Foata normal form. 636/11464 useless extension candidates. Maximal degree in co-relation 43872. Up to 14011 conditions per place. [2023-09-01 08:35:36,469 INFO L137 encePairwiseOnDemand]: 735/745 looper letters, 102 selfloop transitions, 21 changer transitions 0/127 dead transitions. [2023-09-01 08:35:36,469 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 127 transitions, 750 flow [2023-09-01 08:35:36,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 08:35:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 08:35:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2512 transitions. [2023-09-01 08:35:36,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4214765100671141 [2023-09-01 08:35:36,473 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2512 transitions. [2023-09-01 08:35:36,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2512 transitions. [2023-09-01 08:35:36,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:36,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2512 transitions. [2023-09-01 08:35:36,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 314.0) internal successors, (2512), 8 states have internal predecessors, (2512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:36,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:36,481 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 745.0) internal successors, (6705), 9 states have internal predecessors, (6705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:36,481 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 365 flow. Second operand 8 states and 2512 transitions. [2023-09-01 08:35:36,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 127 transitions, 750 flow [2023-09-01 08:35:36,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 726 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:36,493 INFO L231 Difference]: Finished difference. Result has 82 places, 75 transitions, 410 flow [2023-09-01 08:35:36,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=82, PETRI_TRANSITIONS=75} [2023-09-01 08:35:36,493 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-09-01 08:35:36,493 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 75 transitions, 410 flow [2023-09-01 08:35:36,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.8333333333333) internal successors, (3622), 12 states have internal predecessors, (3622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:36,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:36,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:36,500 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:36,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 08:35:36,699 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:36,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:36,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2068436720, now seen corresponding path program 1 times [2023-09-01 08:35:36,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:36,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805321193] [2023-09-01 08:35:36,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 08:35:36,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:36,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805321193] [2023-09-01 08:35:36,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805321193] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 08:35:36,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 08:35:36,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 08:35:36,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035829360] [2023-09-01 08:35:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 08:35:36,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 08:35:36,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 08:35:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 08:35:36,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 322 out of 745 [2023-09-01 08:35:36,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 75 transitions, 410 flow. Second operand has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:36,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:36,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 322 of 745 [2023-09-01 08:35:36,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:38,536 INFO L130 PetriNetUnfolder]: 20291/28006 cut-off events. [2023-09-01 08:35:38,537 INFO L131 PetriNetUnfolder]: For 7221/8141 co-relation queries the response was YES. [2023-09-01 08:35:38,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69729 conditions, 28006 events. 20291/28006 cut-off events. For 7221/8141 co-relation queries the response was YES. Maximal size of possible extension queue 1599. Compared 179992 event pairs, 10260 based on Foata normal form. 920/19077 useless extension candidates. Maximal degree in co-relation 69708. Up to 18987 conditions per place. [2023-09-01 08:35:38,731 INFO L137 encePairwiseOnDemand]: 741/745 looper letters, 100 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-09-01 08:35:38,731 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 107 transitions, 709 flow [2023-09-01 08:35:38,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 08:35:38,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 08:35:38,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1041 transitions. [2023-09-01 08:35:38,733 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4657718120805369 [2023-09-01 08:35:38,733 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1041 transitions. [2023-09-01 08:35:38,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1041 transitions. [2023-09-01 08:35:38,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:38,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1041 transitions. [2023-09-01 08:35:38,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 347.0) internal successors, (1041), 3 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:38,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:38,738 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 745.0) internal successors, (2980), 4 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:38,738 INFO L175 Difference]: Start difference. First operand has 82 places, 75 transitions, 410 flow. Second operand 3 states and 1041 transitions. [2023-09-01 08:35:38,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 107 transitions, 709 flow [2023-09-01 08:35:38,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 107 transitions, 685 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:38,766 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 400 flow [2023-09-01 08:35:38,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=400, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2023-09-01 08:35:38,767 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 14 predicate places. [2023-09-01 08:35:38,767 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 400 flow [2023-09-01 08:35:38,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 327.0) internal successors, (981), 3 states have internal predecessors, (981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:38,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:38,768 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:38,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 08:35:38,768 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:38,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:38,768 INFO L85 PathProgramCache]: Analyzing trace with hash 462161766, now seen corresponding path program 1 times [2023-09-01 08:35:38,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:38,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213584075] [2023-09-01 08:35:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:38,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 08:35:39,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213584075] [2023-09-01 08:35:39,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213584075] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:39,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007578573] [2023-09-01 08:35:39,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:39,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:39,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:39,559 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:39,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 08:35:39,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:39,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 08:35:39,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:39,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:39,860 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:39,910 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:39,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:39,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:39,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:39,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:40,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:40,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:40,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:40,072 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:40,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:40,119 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_733) c_~B~0.base) (+ 4 c_~B~0.offset)) 4294967296)) is different from false [2023-09-01 08:35:40,250 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:40,250 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-09-01 08:35:40,260 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:40,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1105 treesize of output 1057 [2023-09-01 08:35:40,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-09-01 08:35:40,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 47 [2023-09-01 08:35:40,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 46 [2023-09-01 08:35:40,463 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:40,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-09-01 08:35:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:35:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007578573] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:40,516 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:40,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 9] total 28 [2023-09-01 08:35:40,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210454846] [2023-09-01 08:35:40,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:40,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 08:35:40,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:40,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 08:35:40,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=699, Unknown=14, NotChecked=54, Total=870 [2023-09-01 08:35:40,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 745 [2023-09-01 08:35:40,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 400 flow. Second operand has 30 states, 30 states have (on average 240.36666666666667) internal successors, (7211), 30 states have internal predecessors, (7211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:40,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:40,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 745 [2023-09-01 08:35:40,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:45,250 INFO L130 PetriNetUnfolder]: 29863/41553 cut-off events. [2023-09-01 08:35:45,250 INFO L131 PetriNetUnfolder]: For 13056/13173 co-relation queries the response was YES. [2023-09-01 08:35:45,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106882 conditions, 41553 events. 29863/41553 cut-off events. For 13056/13173 co-relation queries the response was YES. Maximal size of possible extension queue 2345. Compared 272929 event pairs, 6243 based on Foata normal form. 117/26527 useless extension candidates. Maximal degree in co-relation 106860. Up to 16600 conditions per place. [2023-09-01 08:35:45,516 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 207 selfloop transitions, 54 changer transitions 0/265 dead transitions. [2023-09-01 08:35:45,516 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 265 transitions, 1512 flow [2023-09-01 08:35:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 08:35:45,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 08:35:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5746 transitions. [2023-09-01 08:35:45,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33533702947184124 [2023-09-01 08:35:45,525 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5746 transitions. [2023-09-01 08:35:45,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5746 transitions. [2023-09-01 08:35:45,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:45,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5746 transitions. [2023-09-01 08:35:45,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 249.82608695652175) internal successors, (5746), 23 states have internal predecessors, (5746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:45,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 745.0) internal successors, (17880), 24 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:45,542 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 745.0) internal successors, (17880), 24 states have internal predecessors, (17880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:45,542 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 400 flow. Second operand 23 states and 5746 transitions. [2023-09-01 08:35:45,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 265 transitions, 1512 flow [2023-09-01 08:35:45,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 1506 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 08:35:45,591 INFO L231 Difference]: Finished difference. Result has 108 places, 110 transitions, 701 flow [2023-09-01 08:35:45,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=701, PETRI_PLACES=108, PETRI_TRANSITIONS=110} [2023-09-01 08:35:45,591 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 40 predicate places. [2023-09-01 08:35:45,591 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 110 transitions, 701 flow [2023-09-01 08:35:45,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 240.36666666666667) internal successors, (7211), 30 states have internal predecessors, (7211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:45,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:45,593 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:45,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:45,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 08:35:45,799 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:45,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:45,799 INFO L85 PathProgramCache]: Analyzing trace with hash 462161765, now seen corresponding path program 2 times [2023-09-01 08:35:45,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:45,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198275840] [2023-09-01 08:35:45,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:45,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:35:46,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198275840] [2023-09-01 08:35:46,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198275840] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:46,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689831279] [2023-09-01 08:35:46,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 08:35:46,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:46,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:46,416 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:46,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 08:35:46,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 08:35:46,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 08:35:46,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core [2023-09-01 08:35:46,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:46,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 08:35:46,663 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:46,707 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:46,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:46,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:46,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:46,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:46,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:46,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:46,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:35:46,844 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:46,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:46,886 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_808 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_808) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-09-01 08:35:46,927 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_807 (Array Int Int)) (v_ArrVal_806 (Array Int Int)) (v_ArrVal_808 (Array Int Int))) (< 0 (+ (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_806) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_807) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_808) c_~B~0.base) (+ 4 c_~B~0.offset)) 9223372039002259456))) is different from false [2023-09-01 08:35:46,981 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:46,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2023-09-01 08:35:46,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:46,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 311 treesize of output 299 [2023-09-01 08:35:47,001 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 122 [2023-09-01 08:35:47,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 55 [2023-09-01 08:35:47,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 54 [2023-09-01 08:35:47,386 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:47,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2023-09-01 08:35:47,436 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 2 not checked. [2023-09-01 08:35:47,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689831279] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:47,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:47,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 25 [2023-09-01 08:35:47,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429754268] [2023-09-01 08:35:47,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:47,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 08:35:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 08:35:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=508, Unknown=5, NotChecked=94, Total=702 [2023-09-01 08:35:47,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 745 [2023-09-01 08:35:47,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 110 transitions, 701 flow. Second operand has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:47,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:47,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 745 [2023-09-01 08:35:47,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:35:50,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:35:53,264 INFO L130 PetriNetUnfolder]: 29729/41393 cut-off events. [2023-09-01 08:35:53,265 INFO L131 PetriNetUnfolder]: For 28871/28986 co-relation queries the response was YES. [2023-09-01 08:35:53,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113674 conditions, 41393 events. 29729/41393 cut-off events. For 28871/28986 co-relation queries the response was YES. Maximal size of possible extension queue 2340. Compared 272918 event pairs, 6521 based on Foata normal form. 115/27967 useless extension candidates. Maximal degree in co-relation 113646. Up to 24810 conditions per place. [2023-09-01 08:35:53,614 INFO L137 encePairwiseOnDemand]: 730/745 looper letters, 128 selfloop transitions, 54 changer transitions 0/186 dead transitions. [2023-09-01 08:35:53,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 186 transitions, 1285 flow [2023-09-01 08:35:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 08:35:53,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 08:35:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4015 transitions. [2023-09-01 08:35:53,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3592841163310962 [2023-09-01 08:35:53,618 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4015 transitions. [2023-09-01 08:35:53,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4015 transitions. [2023-09-01 08:35:53,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:35:53,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4015 transitions. [2023-09-01 08:35:53,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 267.6666666666667) internal successors, (4015), 15 states have internal predecessors, (4015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:53,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 745.0) internal successors, (11920), 16 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:53,630 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 745.0) internal successors, (11920), 16 states have internal predecessors, (11920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:53,630 INFO L175 Difference]: Start difference. First operand has 108 places, 110 transitions, 701 flow. Second operand 15 states and 4015 transitions. [2023-09-01 08:35:53,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 186 transitions, 1285 flow [2023-09-01 08:35:53,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 186 transitions, 1246 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-09-01 08:35:53,702 INFO L231 Difference]: Finished difference. Result has 119 places, 113 transitions, 784 flow [2023-09-01 08:35:53,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=784, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2023-09-01 08:35:53,703 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 51 predicate places. [2023-09-01 08:35:53,703 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 784 flow [2023-09-01 08:35:53,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 259.44444444444446) internal successors, (7005), 27 states have internal predecessors, (7005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:53,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:35:53,704 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:35:53,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 08:35:53,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 08:35:53,910 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:35:53,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:35:53,910 INFO L85 PathProgramCache]: Analyzing trace with hash 462161769, now seen corresponding path program 1 times [2023-09-01 08:35:53,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:35:53,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701391383] [2023-09-01 08:35:53,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:35:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:54,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:35:54,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701391383] [2023-09-01 08:35:54,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701391383] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:35:54,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795199523] [2023-09-01 08:35:54,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:35:54,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:35:54,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:35:54,673 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:35:54,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 08:35:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:35:54,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 43 conjunts are in the unsatisfiable core [2023-09-01 08:35:54,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:35:54,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:54,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:54,920 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-09-01 08:35:54,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-09-01 08:35:54,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:35:55,044 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:35:55,044 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:35:55,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:55,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:55,472 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:35:55,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:35:55,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:55,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:55,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:55,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:55,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:35:55,643 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-09-01 08:35:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:35:55,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:35:55,708 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-09-01 08:35:55,719 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_889 (Array Int Int)) (v_ArrVal_888 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_888) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_889) c_~A~0.base) (+ c_~A~0.offset 4)) 2147483648)) is different from false [2023-09-01 08:35:55,958 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:55,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2023-09-01 08:35:55,976 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:35:55,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2193 treesize of output 2145 [2023-09-01 08:35:56,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 258 treesize of output 250 [2023-09-01 08:35:56,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 250 treesize of output 234 [2023-09-01 08:35:56,081 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 114 [2023-09-01 08:35:56,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 198 [2023-09-01 08:35:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 2 not checked. [2023-09-01 08:35:56,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795199523] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:35:56,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:35:56,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-09-01 08:35:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668294368] [2023-09-01 08:35:56,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:35:56,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 08:35:56,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:35:56,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 08:35:56,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=625, Unknown=7, NotChecked=106, Total=870 [2023-09-01 08:35:56,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 745 [2023-09-01 08:35:56,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 784 flow. Second operand has 30 states, 30 states have (on average 260.4) internal successors, (7812), 30 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:35:56,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:35:56,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 745 [2023-09-01 08:35:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:00,956 INFO L130 PetriNetUnfolder]: 28564/39710 cut-off events. [2023-09-01 08:36:00,957 INFO L131 PetriNetUnfolder]: For 39856/39975 co-relation queries the response was YES. [2023-09-01 08:36:01,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113324 conditions, 39710 events. 28564/39710 cut-off events. For 39856/39975 co-relation queries the response was YES. Maximal size of possible extension queue 2347. Compared 259581 event pairs, 8932 based on Foata normal form. 119/27884 useless extension candidates. Maximal degree in co-relation 113296. Up to 34590 conditions per place. [2023-09-01 08:36:01,308 INFO L137 encePairwiseOnDemand]: 737/745 looper letters, 133 selfloop transitions, 33 changer transitions 0/170 dead transitions. [2023-09-01 08:36:01,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 170 transitions, 1308 flow [2023-09-01 08:36:01,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 08:36:01,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 08:36:01,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2442 transitions. [2023-09-01 08:36:01,311 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642058165548098 [2023-09-01 08:36:01,311 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2442 transitions. [2023-09-01 08:36:01,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2442 transitions. [2023-09-01 08:36:01,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:01,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2442 transitions. [2023-09-01 08:36:01,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 271.3333333333333) internal successors, (2442), 9 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:01,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:01,319 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 745.0) internal successors, (7450), 10 states have internal predecessors, (7450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:01,319 INFO L175 Difference]: Start difference. First operand has 119 places, 113 transitions, 784 flow. Second operand 9 states and 2442 transitions. [2023-09-01 08:36:01,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 170 transitions, 1308 flow [2023-09-01 08:36:01,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 170 transitions, 1246 flow, removed 3 selfloop flow, removed 9 redundant places. [2023-09-01 08:36:01,428 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 837 flow [2023-09-01 08:36:01,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=716, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=837, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2023-09-01 08:36:01,429 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 51 predicate places. [2023-09-01 08:36:01,429 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 837 flow [2023-09-01 08:36:01,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 260.4) internal successors, (7812), 30 states have internal predecessors, (7812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:01,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:01,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:36:01,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-09-01 08:36:01,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:01,637 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:36:01,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 462161768, now seen corresponding path program 1 times [2023-09-01 08:36:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834035973] [2023-09-01 08:36:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:36:02,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:36:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834035973] [2023-09-01 08:36:02,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834035973] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:36:02,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678943823] [2023-09-01 08:36:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:02,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:02,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:36:02,377 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:36:02,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 08:36:02,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:36:02,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 36 conjunts are in the unsatisfiable core [2023-09-01 08:36:02,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:36:02,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:36:02,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:36:02,618 INFO L321 Elim1Store]: treesize reduction 43, result has 41.9 percent of original size [2023-09-01 08:36:02,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 36 [2023-09-01 08:36:02,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-09-01 08:36:02,743 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:36:02,743 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:36:02,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:36:02,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:36:02,849 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-09-01 08:36:02,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:36:02,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:36:02,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:36:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:36:02,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:36:03,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 08:36:03,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-09-01 08:36:03,078 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-09-01 08:36:03,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:36:07,290 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset 4))) (and (forall ((~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse0 (select (select .cse1 c_~B~0.base) (+ ~B~0.offset 4)))) (or (< 0 .cse0) (< .cse0 0) (<= 0 (+ .cse0 (select (select .cse1 c_~A~0.base) .cse2) 2147483648)))))) (forall ((~B~0.offset Int) (v_ArrVal_970 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_970))) (let ((.cse3 (select (select .cse4 c_~B~0.base) (+ ~B~0.offset 4)))) (or (<= .cse3 0) (< 4294967295 .cse3) (<= 0 (+ .cse3 (select (select .cse4 c_~A~0.base) .cse2) 2147483648)))))))) is different from false [2023-09-01 08:36:12,394 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:12,395 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 297 treesize of output 214 [2023-09-01 08:36:12,499 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:12,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3167629 treesize of output 3118429 [2023-09-01 08:36:13,644 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:13,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6591 treesize of output 6056 [2023-09-01 08:36:13,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:13,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 6047 treesize of output 5784 [2023-09-01 08:36:13,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:13,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5775 treesize of output 5680 [2023-09-01 08:36:13,990 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:13,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5671 treesize of output 5544 [2023-09-01 08:36:14,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:14,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 5535 treesize of output 5000 [2023-09-01 08:36:14,194 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:14,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4991 treesize of output 4728 [2023-09-01 08:36:14,301 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:14,302 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4719 treesize of output 4624 [2023-09-01 08:36:14,410 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:36:14,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 4615 treesize of output 4488 [2023-09-01 08:36:23,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:36:23,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678943823] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 08:36:23,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 08:36:23,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 10] total 29 [2023-09-01 08:36:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486386006] [2023-09-01 08:36:23,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 08:36:23,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 08:36:23,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 08:36:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 08:36:23,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=742, Unknown=14, NotChecked=56, Total=930 [2023-09-01 08:36:23,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 745 [2023-09-01 08:36:23,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 837 flow. Second operand has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:23,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 08:36:23,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 745 [2023-09-01 08:36:23,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 08:36:26,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:28,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:30,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:33,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:35,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:37,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:39,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:41,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:43,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:45,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:47,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:49,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:52,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:54,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:56,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 08:36:58,710 INFO L130 PetriNetUnfolder]: 27968/38578 cut-off events. [2023-09-01 08:36:58,710 INFO L131 PetriNetUnfolder]: For 41537/41656 co-relation queries the response was YES. [2023-09-01 08:36:58,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112582 conditions, 38578 events. 27968/38578 cut-off events. For 41537/41656 co-relation queries the response was YES. Maximal size of possible extension queue 2128. Compared 245989 event pairs, 9848 based on Foata normal form. 143/28170 useless extension candidates. Maximal degree in co-relation 112553. Up to 33554 conditions per place. [2023-09-01 08:36:58,967 INFO L137 encePairwiseOnDemand]: 736/745 looper letters, 127 selfloop transitions, 39 changer transitions 0/170 dead transitions. [2023-09-01 08:36:58,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 170 transitions, 1347 flow [2023-09-01 08:36:58,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 08:36:58,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 08:36:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2680 transitions. [2023-09-01 08:36:58,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3597315436241611 [2023-09-01 08:36:58,972 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2680 transitions. [2023-09-01 08:36:58,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2680 transitions. [2023-09-01 08:36:58,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 08:36:58,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2680 transitions. [2023-09-01 08:36:58,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 268.0) internal successors, (2680), 10 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,981 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 745.0) internal successors, (8195), 11 states have internal predecessors, (8195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:58,981 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 837 flow. Second operand 10 states and 2680 transitions. [2023-09-01 08:36:58,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 170 transitions, 1347 flow [2023-09-01 08:36:59,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 170 transitions, 1336 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 08:36:59,058 INFO L231 Difference]: Finished difference. Result has 126 places, 116 transitions, 914 flow [2023-09-01 08:36:59,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=745, PETRI_DIFFERENCE_MINUEND_FLOW=818, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=914, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2023-09-01 08:36:59,059 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 58 predicate places. [2023-09-01 08:36:59,059 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 914 flow [2023-09-01 08:36:59,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 258.4193548387097) internal successors, (8011), 31 states have internal predecessors, (8011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 08:36:59,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 08:36:59,061 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 08:36:59,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 08:36:59,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:36:59,262 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2023-09-01 08:36:59,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 08:36:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1442416826, now seen corresponding path program 1 times [2023-09-01 08:36:59,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 08:36:59,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68349087] [2023-09-01 08:36:59,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:36:59,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 08:36:59,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:00,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:00,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 08:37:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68349087] [2023-09-01 08:37:00,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68349087] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 08:37:00,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715142401] [2023-09-01 08:37:00,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 08:37:00,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 08:37:00,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 08:37:00,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 08:37:00,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 08:37:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 08:37:00,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 41 conjunts are in the unsatisfiable core [2023-09-01 08:37:00,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 08:37:00,543 INFO L321 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2023-09-01 08:37:00,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 47 [2023-09-01 08:37:00,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 08:37:00,651 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-09-01 08:37:00,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-09-01 08:37:00,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,738 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 08:37:00,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-09-01 08:37:00,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-09-01 08:37:00,888 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 08:37:00,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 08:37:05,072 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1060 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse2 (select (select .cse0 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) .cse2 2147483648)) (< 0 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_1060 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse4 (select (select .cse3 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) .cse4 2147483648)) (< 4294967295 .cse4) (<= .cse4 0))))))) is different from false [2023-09-01 08:37:05,377 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset 4))) (and (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int)) (v_ArrVal_1058 (Array Int Int)) (v_ArrVal_1057 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse0 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1057) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1058) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse2 (select (select .cse0 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse0 c_~A~0.base) .cse1) .cse2 2147483648)) (< 0 .cse2) (< .cse2 0))))) (forall ((v_ArrVal_1060 (Array Int Int)) (v_ArrVal_1059 (Array Int Int)) (v_ArrVal_1058 (Array Int Int)) (v_ArrVal_1057 (Array Int Int)) (~B~0.offset Int) (~B~0.base Int)) (let ((.cse3 (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_1057) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_1058) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1059) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1060))) (let ((.cse4 (select (select .cse3 ~B~0.base) (+ ~B~0.offset 4)))) (or (<= 0 (+ (select (select .cse3 c_~A~0.base) .cse1) .cse4 2147483648)) (<= .cse4 0) (< 4294967295 .cse4))))))) is different from false [2023-09-01 08:37:06,164 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:06,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 321 treesize of output 238 [2023-09-01 08:37:06,483 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:06,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 28537613 treesize of output 28094448 [2023-09-01 08:37:26,346 WARN L222 SmtUtils]: Spent 19.85s on a formula simplification. DAG size of input: 4697 DAG size of output: 1029 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-09-01 08:37:26,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:26,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50767 treesize of output 50248 [2023-09-01 08:37:27,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:27,047 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50239 treesize of output 49984 [2023-09-01 08:37:27,763 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:27,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49975 treesize of output 48928 [2023-09-01 08:37:28,409 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:28,410 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48919 treesize of output 46816 [2023-09-01 08:37:29,047 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:29,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46807 treesize of output 42592 [2023-09-01 08:37:29,703 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:29,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42583 treesize of output 41536 [2023-09-01 08:37:30,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:30,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41527 treesize of output 41272 [2023-09-01 08:37:31,145 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:31,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41263 treesize of output 40744 [2023-09-01 08:37:31,829 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:31,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40735 treesize of output 36520 [2023-09-01 08:37:32,583 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 08:37:32,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36511 treesize of output 34408 Killed by 15