./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.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 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 11:43:47,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 11:43:47,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 11:43:47,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 11:43:47,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 11:43:47,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 11:43:47,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 11:43:47,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 11:43:47,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 11:43:47,795 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 11:43:47,796 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 11:43:47,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 11:43:47,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 11:43:47,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 11:43:47,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 11:43:47,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 11:43:47,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 11:43:47,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 11:43:47,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 11:43:47,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 11:43:47,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 11:43:47,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 11:43:47,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 11:43:47,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 11:43:47,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 11:43:47,813 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 11:43:47,813 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 11:43:47,814 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 11:43:47,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 11:43:47,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 11:43:47,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 11:43:47,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 11:43:47,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 11:43:47,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 11:43:47,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 11:43:47,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 11:43:47,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 11:43:47,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 11:43:47,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 11:43:47,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 11:43:47,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 11:43:47,821 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 11:43:47,863 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 11:43:47,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 11:43:47,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 11:43:47,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 11:43:47,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 11:43:47,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 11:43:47,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 11:43:47,864 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 11:43:47,864 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 11:43:47,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 11:43:47,864 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 11:43:47,864 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 11:43:47,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 11:43:47,865 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 11:43:47,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:43:47,866 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 11:43:47,866 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 11:43:47,867 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 11:43:48,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 11:43:48,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 11:43:48,159 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 11:43:48,160 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 11:43:48,160 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 11:43:48,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-30 11:43:49,191 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 11:43:49,375 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 11:43:49,375 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-30 11:43:49,381 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870043854/e6ff80b7a22047f7a9ad075d942b5c1c/FLAGbbdfcbc1b [2023-08-30 11:43:49,391 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/870043854/e6ff80b7a22047f7a9ad075d942b5c1c [2023-08-30 11:43:49,394 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 11:43:49,394 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 11:43:49,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 11:43:49,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 11:43:49,399 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 11:43:49,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dc560d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49, skipping insertion in model container [2023-08-30 11:43:49,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 11:43:49,422 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 11:43:49,541 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-more-array-sum2.wvr.c[2599,2612] [2023-08-30 11:43:49,561 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:43:49,573 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 11:43:49,609 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-more-array-sum2.wvr.c[2599,2612] [2023-08-30 11:43:49,615 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 11:43:49,623 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:43:49,624 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 11:43:49,630 INFO L208 MainTranslator]: Completed translation [2023-08-30 11:43:49,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49 WrapperNode [2023-08-30 11:43:49,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 11:43:49,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 11:43:49,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 11:43:49,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 11:43:49,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,688 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 369 [2023-08-30 11:43:49,688 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 11:43:49,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 11:43:49,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 11:43:49,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 11:43:49,696 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,716 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 11:43:49,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 11:43:49,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 11:43:49,722 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 11:43:49,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (1/1) ... [2023-08-30 11:43:49,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 11:43:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:43:49,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 11:43:49,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 11:43:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 11:43:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 11:43:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 11:43:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 11:43:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 11:43:49,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 11:43:49,918 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 11:43:49,918 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 11:43:49,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 11:43:49,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 11:43:49,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 11:43:49,920 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 11:43:50,072 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 11:43:50,074 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 11:43:50,581 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 11:43:51,659 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 11:43:51,659 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 11:43:51,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:43:51 BoogieIcfgContainer [2023-08-30 11:43:51,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 11:43:51,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 11:43:51,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 11:43:51,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 11:43:51,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:43:49" (1/3) ... [2023-08-30 11:43:51,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa01a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:43:51, skipping insertion in model container [2023-08-30 11:43:51,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:43:49" (2/3) ... [2023-08-30 11:43:51,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa01a49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:43:51, skipping insertion in model container [2023-08-30 11:43:51,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:43:51" (3/3) ... [2023-08-30 11:43:51,669 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-08-30 11:43:51,677 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 11:43:51,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 11:43:51,685 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-08-30 11:43:51,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 11:43:52,016 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 11:43:52,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 234 transitions, 492 flow [2023-08-30 11:43:52,178 INFO L130 PetriNetUnfolder]: 16/231 cut-off events. [2023-08-30 11:43:52,178 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 11:43:52,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 231 events. 16/231 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 390 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-30 11:43:52,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 234 transitions, 492 flow [2023-08-30 11:43:52,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 213 transitions, 441 flow [2023-08-30 11:43:52,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 11:43:52,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 213 transitions, 441 flow [2023-08-30 11:43:52,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 213 transitions, 441 flow [2023-08-30 11:43:52,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 213 transitions, 441 flow [2023-08-30 11:43:52,261 INFO L130 PetriNetUnfolder]: 15/213 cut-off events. [2023-08-30 11:43:52,262 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 11:43:52,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 213 events. 15/213 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 381 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 181. Up to 2 conditions per place. [2023-08-30 11:43:52,266 INFO L119 LiptonReduction]: Number of co-enabled transitions 5928 [2023-08-30 11:44:33,014 INFO L134 LiptonReduction]: Checked pairs total: 7777 [2023-08-30 11:44:33,014 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-08-30 11:44:33,027 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 11:44:33,033 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;@5a75c0cb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 11:44:33,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-08-30 11:44:33,039 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 11:44:33,039 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 11:44:33,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:33,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 11:44:33,040 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:44:33,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:33,045 INFO L85 PathProgramCache]: Analyzing trace with hash 52974, now seen corresponding path program 1 times [2023-08-30 11:44:33,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:33,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084728769] [2023-08-30 11:44:33,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:33,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:33,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:33,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084728769] [2023-08-30 11:44:33,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084728769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:33,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:44:33,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:44:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038401544] [2023-08-30 11:44:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:33,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:44:33,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:33,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:44:33,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:44:33,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-08-30 11:44:33,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:33,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:33,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-08-30 11:44:33,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:41,782 INFO L130 PetriNetUnfolder]: 26723/33113 cut-off events. [2023-08-30 11:44:41,782 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2023-08-30 11:44:41,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66772 conditions, 33113 events. 26723/33113 cut-off events. For 332/332 co-relation queries the response was YES. Maximal size of possible extension queue 4000. Compared 172929 event pairs, 12995 based on Foata normal form. 0/6652 useless extension candidates. Maximal degree in co-relation 31112. Up to 16552 conditions per place. [2023-08-30 11:44:41,919 INFO L137 encePairwiseOnDemand]: 432/458 looper letters, 89 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-30 11:44:41,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 408 flow [2023-08-30 11:44:41,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:44:41,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:44:41,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-30 11:44:41,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016011644832606 [2023-08-30 11:44:41,930 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-30 11:44:41,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-30 11:44:41,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:41,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-30 11:44:41,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:41,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:41,940 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:41,941 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 155 flow. Second operand 3 states and 646 transitions. [2023-08-30 11:44:41,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 408 flow [2023-08-30 11:44:42,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 96 transitions, 390 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-30 11:44:42,087 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 146 flow [2023-08-30 11:44:42,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-08-30 11:44:42,093 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-08-30 11:44:42,095 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 146 flow [2023-08-30 11:44:42,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:42,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:42,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:44:42,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 11:44:42,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:44:42,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:42,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1643863, now seen corresponding path program 1 times [2023-08-30 11:44:42,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:42,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536334092] [2023-08-30 11:44:42,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:42,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:42,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:42,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536334092] [2023-08-30 11:44:42,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536334092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:42,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051630304] [2023-08-30 11:44:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:42,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:42,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:42,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:42,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 11:44:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:42,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:44:42,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:42,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:42,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:44:42,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051630304] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:44:42,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:44:42,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 11:44:42,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434193164] [2023-08-30 11:44:42,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:44:42,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 11:44:42,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:42,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 11:44:42,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:44:42,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-08-30 11:44:42,561 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:42,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:42,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-08-30 11:44:42,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:44:50,467 INFO L130 PetriNetUnfolder]: 26723/33111 cut-off events. [2023-08-30 11:44:50,467 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 11:44:50,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66492 conditions, 33111 events. 26723/33111 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 3361. Compared 171773 event pairs, 12995 based on Foata normal form. 0/6656 useless extension candidates. Maximal degree in co-relation 33477. Up to 16552 conditions per place. [2023-08-30 11:44:50,592 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 87 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-08-30 11:44:50,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 408 flow [2023-08-30 11:44:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:44:50,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:44:50,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2023-08-30 11:44:50,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42412663755458513 [2023-08-30 11:44:50,595 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2023-08-30 11:44:50,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2023-08-30 11:44:50,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:44:50,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2023-08-30 11:44:50,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 194.25) internal successors, (777), 4 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:50,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:50,600 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:50,601 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 146 flow. Second operand 4 states and 777 transitions. [2023-08-30 11:44:50,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 408 flow [2023-08-30 11:44:50,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 94 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:44:50,603 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 138 flow [2023-08-30 11:44:50,603 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=55, PETRI_TRANSITIONS=53} [2023-08-30 11:44:50,604 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-08-30 11:44:50,604 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 138 flow [2023-08-30 11:44:50,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:50,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:44:50,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 11:44:50,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 11:44:50,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:50,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:44:50,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:44:50,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1643864, now seen corresponding path program 1 times [2023-08-30 11:44:50,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:44:50,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020037604] [2023-08-30 11:44:50,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:50,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:44:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:44:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020037604] [2023-08-30 11:44:50,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020037604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:44:50,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578754112] [2023-08-30 11:44:50,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:44:50,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:44:50,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:44:50,909 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:44:50,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 11:44:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:44:51,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 11:44:51,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:44:51,260 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:51,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:44:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:44:51,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578754112] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:44:51,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:44:51,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 11:44:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246472365] [2023-08-30 11:44:51,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:44:51,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 11:44:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:44:51,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 11:44:51,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 11:44:51,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-08-30 11:44:51,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 53 transitions, 138 flow. Second operand has 7 states, 7 states have (on average 172.14285714285714) internal successors, (1205), 7 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:44:51,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:44:51,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-08-30 11:44:51,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:09,868 INFO L130 PetriNetUnfolder]: 66446/82413 cut-off events. [2023-08-30 11:45:09,868 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 11:45:09,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165471 conditions, 82413 events. 66446/82413 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 7083. Compared 466349 event pairs, 32456 based on Foata normal form. 0/16619 useless extension candidates. Maximal degree in co-relation 131947. Up to 16555 conditions per place. [2023-08-30 11:45:10,159 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 210 selfloop transitions, 13 changer transitions 0/226 dead transitions. [2023-08-30 11:45:10,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 226 transitions, 978 flow [2023-08-30 11:45:10,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 11:45:10,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 11:45:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1255 transitions. [2023-08-30 11:45:10,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566957787481805 [2023-08-30 11:45:10,162 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1255 transitions. [2023-08-30 11:45:10,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1255 transitions. [2023-08-30 11:45:10,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:10,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1255 transitions. [2023-08-30 11:45:10,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 209.16666666666666) internal successors, (1255), 6 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,169 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 458.0) internal successors, (3206), 7 states have internal predecessors, (3206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,169 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 138 flow. Second operand 6 states and 1255 transitions. [2023-08-30 11:45:10,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 226 transitions, 978 flow [2023-08-30 11:45:10,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 226 transitions, 970 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:10,176 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 229 flow [2023-08-30 11:45:10,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2023-08-30 11:45:10,177 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 11:45:10,177 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 229 flow [2023-08-30 11:45:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 172.14285714285714) internal successors, (1205), 7 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:10,178 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 11:45:10,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 11:45:10,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-30 11:45:10,384 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:45:10,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:10,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1729339695, now seen corresponding path program 2 times [2023-08-30 11:45:10,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:10,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750800443] [2023-08-30 11:45:10,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:10,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:10,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:10,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750800443] [2023-08-30 11:45:10,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750800443] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:45:10,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192496500] [2023-08-30 11:45:10,477 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 11:45:10,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:10,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:45:10,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:45:10,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 11:45:10,770 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 11:45:10,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 11:45:10,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 11:45:10,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:45:10,786 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-30 11:45:10,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 11:45:10,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192496500] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:10,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 11:45:10,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 11:45:10,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681350542] [2023-08-30 11:45:10,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:10,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:10,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:10,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:10,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 11:45:10,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 458 [2023-08-30 11:45:10,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:10,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:10,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 458 [2023-08-30 11:45:10,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:28,872 INFO L130 PetriNetUnfolder]: 67406/83372 cut-off events. [2023-08-30 11:45:28,873 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 11:45:28,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167457 conditions, 83372 events. 67406/83372 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 7124. Compared 467071 event pairs, 32540 based on Foata normal form. 1/16673 useless extension candidates. Maximal degree in co-relation 133921. Up to 82757 conditions per place. [2023-08-30 11:45:29,158 INFO L137 encePairwiseOnDemand]: 455/458 looper letters, 52 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-30 11:45:29,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 335 flow [2023-08-30 11:45:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:29,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:29,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-30 11:45:29,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119359534206696 [2023-08-30 11:45:29,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-30 11:45:29,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-30 11:45:29,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:29,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-30 11:45:29,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:29,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:29,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:29,164 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 229 flow. Second operand 3 states and 566 transitions. [2023-08-30 11:45:29,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 335 flow [2023-08-30 11:45:29,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 61 transitions, 316 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-30 11:45:29,165 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 212 flow [2023-08-30 11:45:29,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-08-30 11:45:29,166 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 11:45:29,166 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 212 flow [2023-08-30 11:45:29,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:29,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:29,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:45:29,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 11:45:29,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:45:29,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:45:29,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:29,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1747061066, now seen corresponding path program 1 times [2023-08-30 11:45:29,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:29,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298802060] [2023-08-30 11:45:29,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:29,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:29,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:29,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:29,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:29,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298802060] [2023-08-30 11:45:29,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298802060] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:29,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:29,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 11:45:29,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586712005] [2023-08-30 11:45:29,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:29,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:45:29,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:29,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:45:29,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:45:29,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 458 [2023-08-30 11:45:29,449 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:29,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:29,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 458 [2023-08-30 11:45:29,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:45:52,719 INFO L130 PetriNetUnfolder]: 102581/130507 cut-off events. [2023-08-30 11:45:52,719 INFO L131 PetriNetUnfolder]: For 612/612 co-relation queries the response was YES. [2023-08-30 11:45:52,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262643 conditions, 130507 events. 102581/130507 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 11535. Compared 833462 event pairs, 27690 based on Foata normal form. 0/29207 useless extension candidates. Maximal degree in co-relation 262587. Up to 70793 conditions per place. [2023-08-30 11:45:53,225 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 94 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 11:45:53,225 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 483 flow [2023-08-30 11:45:53,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:45:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:45:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 11:45:53,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44468704512372637 [2023-08-30 11:45:53,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 11:45:53,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 11:45:53,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:45:53,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 11:45:53,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:53,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:53,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:53,231 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 212 flow. Second operand 3 states and 611 transitions. [2023-08-30 11:45:53,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 483 flow [2023-08-30 11:45:53,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 98 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:45:53,232 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 214 flow [2023-08-30 11:45:53,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=62, PETRI_TRANSITIONS=62} [2023-08-30 11:45:53,233 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-08-30 11:45:53,233 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 214 flow [2023-08-30 11:45:53,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.0) internal successors, (531), 3 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:53,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:45:53,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 11:45:53,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 11:45:53,234 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:45:53,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:45:53,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1747060959, now seen corresponding path program 1 times [2023-08-30 11:45:53,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:45:53,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789308534] [2023-08-30 11:45:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:45:53,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:45:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:45:53,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:45:53,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:45:53,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789308534] [2023-08-30 11:45:53,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789308534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:45:53,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:45:53,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 11:45:53,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440850913] [2023-08-30 11:45:53,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:45:53,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 11:45:53,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:45:53,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 11:45:53,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 11:45:53,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 458 [2023-08-30 11:45:53,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 62 transitions, 214 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:45:53,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:45:53,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 458 [2023-08-30 11:45:53,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:11,623 INFO L130 PetriNetUnfolder]: 79073/101417 cut-off events. [2023-08-30 11:46:11,624 INFO L131 PetriNetUnfolder]: For 5134/5134 co-relation queries the response was YES. [2023-08-30 11:46:11,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209994 conditions, 101417 events. 79073/101417 cut-off events. For 5134/5134 co-relation queries the response was YES. Maximal size of possible extension queue 10133. Compared 660226 event pairs, 46316 based on Foata normal form. 3/25112 useless extension candidates. Maximal degree in co-relation 209938. Up to 100644 conditions per place. [2023-08-30 11:46:12,064 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 52 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2023-08-30 11:46:12,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 334 flow [2023-08-30 11:46:12,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 11:46:12,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 11:46:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 709 transitions. [2023-08-30 11:46:12,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38700873362445415 [2023-08-30 11:46:12,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 709 transitions. [2023-08-30 11:46:12,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 709 transitions. [2023-08-30 11:46:12,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:12,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 709 transitions. [2023-08-30 11:46:12,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.25) internal successors, (709), 4 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,072 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 458.0) internal successors, (2290), 5 states have internal predecessors, (2290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,073 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 214 flow. Second operand 4 states and 709 transitions. [2023-08-30 11:46:12,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 334 flow [2023-08-30 11:46:12,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 62 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 11:46:12,077 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 233 flow [2023-08-30 11:46:12,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-30 11:46:12,078 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-08-30 11:46:12,078 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 233 flow [2023-08-30 11:46:12,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:12,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:46:12,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 11:46:12,079 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:46:12,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:12,080 INFO L85 PathProgramCache]: Analyzing trace with hash 292825151, now seen corresponding path program 1 times [2023-08-30 11:46:12,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:12,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965068915] [2023-08-30 11:46:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:12,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 11:46:12,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:12,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965068915] [2023-08-30 11:46:12,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965068915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 11:46:12,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 11:46:12,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 11:46:12,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585879755] [2023-08-30 11:46:12,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 11:46:12,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 11:46:12,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:46:12,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 11:46:12,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 11:46:12,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 458 [2023-08-30 11:46:12,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:12,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:46:12,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 458 [2023-08-30 11:46:12,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:46:28,816 INFO L130 PetriNetUnfolder]: 72385/91540 cut-off events. [2023-08-30 11:46:28,817 INFO L131 PetriNetUnfolder]: For 1124/2136 co-relation queries the response was YES. [2023-08-30 11:46:28,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188566 conditions, 91540 events. 72385/91540 cut-off events. For 1124/2136 co-relation queries the response was YES. Maximal size of possible extension queue 8908. Compared 571906 event pairs, 14972 based on Foata normal form. 1012/22904 useless extension candidates. Maximal degree in co-relation 188502. Up to 58997 conditions per place. [2023-08-30 11:46:29,223 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 90 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-30 11:46:29,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 490 flow [2023-08-30 11:46:29,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 11:46:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 11:46:29,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 11:46:29,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44468704512372637 [2023-08-30 11:46:29,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 11:46:29,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 11:46:29,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:46:29,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 11:46:29,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 203.66666666666666) internal successors, (611), 3 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:29,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:29,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:29,228 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 233 flow. Second operand 3 states and 611 transitions. [2023-08-30 11:46:29,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 490 flow [2023-08-30 11:46:29,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 95 transitions, 474 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 11:46:29,231 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 227 flow [2023-08-30 11:46:29,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2023-08-30 11:46:29,233 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-08-30 11:46:29,233 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 227 flow [2023-08-30 11:46:29,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.33333333333334) internal successors, (535), 3 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:46:29,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:46:29,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:46:29,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 11:46:29,233 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:46:29,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:46:29,234 INFO L85 PathProgramCache]: Analyzing trace with hash 292825145, now seen corresponding path program 1 times [2023-08-30 11:46:29,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:46:29,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287757429] [2023-08-30 11:46:29,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:29,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:46:29,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:29,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:46:29,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:46:29,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287757429] [2023-08-30 11:46:29,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287757429] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:46:29,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909005745] [2023-08-30 11:46:29,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:46:29,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:46:29,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:46:29,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:46:29,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 11:46:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:46:30,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 11:46:30,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:46:30,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:46:30,386 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 11:46:30,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 11:46:30,431 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 [2023-08-30 11:46:30,462 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 11:46:30,462 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 [2023-08-30 11:46:30,489 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 [2023-08-30 11:46:30,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:46:30,518 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 [2023-08-30 11:46:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:46:30,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:46:32,713 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_246 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse0 (select (select .cse1 ~B~0.base) ~B~0.offset))) (or (<= (+ .cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)) 2147483647) (<= 0 .cse0) (< (+ 9223372039002259455 .cse0) 0))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_246 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse2 (select (select .cse3 ~B~0.base) ~B~0.offset))) (or (< 0 .cse2) (<= (+ .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) 2147483647) (< .cse2 0)))))) is different from false [2023-08-30 11:46:34,785 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_245 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_245) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse0 (select (select .cse1 ~B~0.base) ~B~0.offset))) (or (<= (+ .cse0 (select (select .cse1 c_~A~0.base) c_~A~0.offset)) 2147483647) (< 0 .cse0) (< .cse0 0))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_245 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_245) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246))) (let ((.cse2 (select (select .cse3 ~B~0.base) ~B~0.offset))) (or (<= 0 .cse2) (<= (+ .cse2 (select (select .cse3 c_~A~0.base) c_~A~0.offset)) 2147483647) (< (+ 9223372039002259455 .cse2) 0)))))) is different from false [2023-08-30 11:46:36,235 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:46:36,235 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 215 treesize of output 132 [2023-08-30 11:46:36,292 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:46:36,293 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 1941 treesize of output 1820 [2023-08-30 11:46:36,369 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:46:36,370 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 765 treesize of output 754 [2023-08-30 11:46:36,421 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:46:36,422 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 745 treesize of output 714 [2023-08-30 11:46:36,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:46:36,470 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 705 treesize of output 674 [2023-08-30 11:46:36,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:46:36,519 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 665 treesize of output 654 [2023-08-30 11:53:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 11:53:55,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909005745] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:53:55,605 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:53:55,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 11:53:55,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386303763] [2023-08-30 11:53:55,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:53:55,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 11:53:55,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:53:55,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 11:53:55,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=189, Unknown=3, NotChecked=58, Total=306 [2023-08-30 11:53:55,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 458 [2023-08-30 11:53:55,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 227 flow. Second operand has 18 states, 18 states have (on average 132.16666666666666) internal successors, (2379), 18 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:53:55,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:53:55,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 458 [2023-08-30 11:53:55,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:53:58,023 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] [2023-08-30 11:54:00,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:02,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:04,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:06,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:08,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:10,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:12,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:14,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:16,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:18,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:20,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:22,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:24,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:26,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:28,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:30,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:32,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:34,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:36,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:37,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:39,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:41,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:43,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:45,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:47,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:49,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:51,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:53,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:55,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:57,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:54:59,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:55:01,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:55:18,032 INFO L130 PetriNetUnfolder]: 77589/99920 cut-off events. [2023-08-30 11:55:18,032 INFO L131 PetriNetUnfolder]: For 6184/6184 co-relation queries the response was YES. [2023-08-30 11:55:18,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210108 conditions, 99920 events. 77589/99920 cut-off events. For 6184/6184 co-relation queries the response was YES. Maximal size of possible extension queue 10515. Compared 661250 event pairs, 34512 based on Foata normal form. 0/26148 useless extension candidates. Maximal degree in co-relation 210050. Up to 88661 conditions per place. [2023-08-30 11:55:18,470 INFO L137 encePairwiseOnDemand]: 449/458 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2023-08-30 11:55:18,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 533 flow [2023-08-30 11:55:18,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 11:55:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 11:55:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1139 transitions. [2023-08-30 11:55:18,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31086244541484714 [2023-08-30 11:55:18,473 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1139 transitions. [2023-08-30 11:55:18,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1139 transitions. [2023-08-30 11:55:18,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:55:18,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1139 transitions. [2023-08-30 11:55:18,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:18,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:18,480 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 458.0) internal successors, (4122), 9 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:18,480 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 227 flow. Second operand 8 states and 1139 transitions. [2023-08-30 11:55:18,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 533 flow [2023-08-30 11:55:18,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 103 transitions, 527 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 11:55:18,485 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 293 flow [2023-08-30 11:55:18,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=293, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2023-08-30 11:55:18,486 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-08-30 11:55:18,486 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 293 flow [2023-08-30 11:55:18,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 132.16666666666666) internal successors, (2379), 18 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:18,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:55:18,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:55:18,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 11:55:18,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:55:18,692 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:55:18,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:55:18,693 INFO L85 PathProgramCache]: Analyzing trace with hash 292825142, now seen corresponding path program 1 times [2023-08-30 11:55:18,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:55:18,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453386599] [2023-08-30 11:55:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:55:18,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:55:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:55:18,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:55:18,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:55:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453386599] [2023-08-30 11:55:18,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453386599] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:55:18,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203859908] [2023-08-30 11:55:18,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:55:18,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:55:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:55:18,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 11:55:18,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 11:55:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:55:19,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 11:55:19,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:55:19,207 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 [2023-08-30 11:55:19,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:55:19,239 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 [2023-08-30 11:55:19,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:55:19,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:55:19,290 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:19,290 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 [2023-08-30 11:55:19,297 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:19,297 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 [2023-08-30 11:55:19,301 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 5 treesize of output 3 [2023-08-30 11:55:19,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 11:55:19,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203859908] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:55:19,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:55:19,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 11:55:19,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841418674] [2023-08-30 11:55:19,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:55:19,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 11:55:19,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:55:19,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 11:55:19,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-30 11:55:19,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 458 [2023-08-30 11:55:19,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:19,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:55:19,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 458 [2023-08-30 11:55:19,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:55:43,025 INFO L130 PetriNetUnfolder]: 102953/133712 cut-off events. [2023-08-30 11:55:43,026 INFO L131 PetriNetUnfolder]: For 17197/17197 co-relation queries the response was YES. [2023-08-30 11:55:43,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284828 conditions, 133712 events. 102953/133712 cut-off events. For 17197/17197 co-relation queries the response was YES. Maximal size of possible extension queue 15082. Compared 946290 event pairs, 30448 based on Foata normal form. 0/37400 useless extension candidates. Maximal degree in co-relation 284762. Up to 80620 conditions per place. [2023-08-30 11:55:43,704 INFO L137 encePairwiseOnDemand]: 441/458 looper letters, 72 selfloop transitions, 30 changer transitions 0/104 dead transitions. [2023-08-30 11:55:43,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 589 flow [2023-08-30 11:55:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 11:55:43,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 11:55:43,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1504 transitions. [2023-08-30 11:55:43,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648714216399806 [2023-08-30 11:55:43,707 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1504 transitions. [2023-08-30 11:55:43,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1504 transitions. [2023-08-30 11:55:43,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 11:55:43,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1504 transitions. [2023-08-30 11:55:43,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 167.11111111111111) internal successors, (1504), 9 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:43,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 458.0) internal successors, (4580), 10 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:43,714 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 458.0) internal successors, (4580), 10 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:43,714 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 293 flow. Second operand 9 states and 1504 transitions. [2023-08-30 11:55:43,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 589 flow [2023-08-30 11:55:43,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 104 transitions, 581 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 11:55:43,722 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 396 flow [2023-08-30 11:55:43,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=396, PETRI_PLACES=82, PETRI_TRANSITIONS=77} [2023-08-30 11:55:43,722 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2023-08-30 11:55:43,723 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 396 flow [2023-08-30 11:55:43,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:55:43,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 11:55:43,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 11:55:43,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-30 11:55:43,929 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 [2023-08-30 11:55:43,930 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 11:55:43,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 11:55:43,930 INFO L85 PathProgramCache]: Analyzing trace with hash 292825144, now seen corresponding path program 1 times [2023-08-30 11:55:43,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 11:55:43,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131464278] [2023-08-30 11:55:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:55:43,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 11:55:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:55:44,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:55:44,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 11:55:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131464278] [2023-08-30 11:55:44,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131464278] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 11:55:44,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555644092] [2023-08-30 11:55:44,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 11:55:44,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 11:55:44,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 11:55:44,345 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) [2023-08-30 11:55:44,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 11:55:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 11:55:44,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 11:55:44,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 11:55:44,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:55:44,717 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 11:55:44,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 39 [2023-08-30 11:55:44,762 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 [2023-08-30 11:55:44,798 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 11:55:44,798 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 [2023-08-30 11:55:44,842 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 [2023-08-30 11:55:44,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 11:55:44,866 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 [2023-08-30 11:55:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 11:55:44,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 11:55:47,047 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_345 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_345))) (let ((.cse0 (select (select .cse1 ~B~0.base) ~B~0.offset))) (or (< .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) c_~A~0.offset) .cse0 2147483648)) (< 0 .cse0))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_345 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_345))) (let ((.cse2 (select (select .cse3 ~B~0.base) ~B~0.offset))) (or (<= .cse2 0) (<= 0 (+ (select (select .cse3 c_~A~0.base) c_~A~0.offset) .cse2 2147483648)) (< 4294967295 .cse2)))))) is different from false [2023-08-30 11:55:47,078 WARN L839 $PredicateComparison]: unable to prove that (and (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_345 (Array Int Int))) (let ((.cse1 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_344) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_345))) (let ((.cse0 (select (select .cse1 ~B~0.base) ~B~0.offset))) (or (< 4294967295 .cse0) (<= .cse0 0) (<= 0 (+ (select (select .cse1 c_~A~0.base) c_~A~0.offset) 2147483648 .cse0)))))) (forall ((~B~0.offset Int) (~B~0.base Int) (v_ArrVal_344 (Array Int Int)) (v_ArrVal_345 (Array Int Int))) (let ((.cse3 (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_344) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_345))) (let ((.cse2 (select (select .cse3 ~B~0.base) ~B~0.offset))) (or (< .cse2 0) (< 0 .cse2) (<= 0 (+ (select (select .cse3 c_~A~0.base) c_~A~0.offset) 2147483648 .cse2))))))) is different from false [2023-08-30 11:55:47,180 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:47,181 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 215 treesize of output 132 [2023-08-30 11:55:47,237 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:47,237 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 1343 treesize of output 1286 [2023-08-30 11:55:47,302 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:47,303 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 789 treesize of output 758 [2023-08-30 11:55:47,334 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:47,334 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 749 treesize of output 738 [2023-08-30 11:55:47,366 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:47,367 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 729 treesize of output 698 [2023-08-30 11:55:47,405 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 11:55:47,405 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 689 treesize of output 678 [2023-08-30 11:57:19,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-30 11:57:19,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555644092] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 11:57:19,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 11:57:19,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 11:57:19,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343926309] [2023-08-30 11:57:19,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 11:57:19,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 11:57:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 11:57:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 11:57:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=189, Unknown=3, NotChecked=58, Total=306 [2023-08-30 11:57:19,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 458 [2023-08-30 11:57:19,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 77 transitions, 396 flow. Second operand has 18 states, 18 states have (on average 132.16666666666666) internal successors, (2379), 18 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 11:57:19,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 11:57:19,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 458 [2023-08-30 11:57:19,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 11:57:21,494 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] [2023-08-30 11:57:23,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:57:25,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:57:27,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:57:29,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:57:31,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:57:33,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 11:57:35,701 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] Killed by 15