./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 TOGETHER --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 TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 15:36:28,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 15:36:28,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 15:36:28,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 15:36:28,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 15:36:28,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 15:36:28,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 15:36:28,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 15:36:28,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 15:36:28,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 15:36:28,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 15:36:28,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 15:36:28,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 15:36:28,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 15:36:28,908 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 15:36:28,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 15:36:28,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 15:36:28,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 15:36:28,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 15:36:28,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 15:36:28,933 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 15:36:28,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 15:36:28,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 15:36:28,935 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 15:36:28,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 15:36:28,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 15:36:28,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 15:36:28,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 15:36:28,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 15:36:28,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 15:36:28,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 15:36:28,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 15:36:28,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 15:36:28,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 15:36:28,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 15:36:28,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 15:36:28,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 15:36:28,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 15:36:28,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 15:36:28,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 15:36:28,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 15:36:28,946 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-08-30 15:36:28,990 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 15:36:28,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 15:36:28,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 15:36:28,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 15:36:28,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 15:36:28,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 15:36:28,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 15:36:28,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 15:36:28,992 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 15:36:28,992 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 15:36:28,993 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 15:36:28,993 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 15:36:28,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 15:36:28,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 15:36:28,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 15:36:28,995 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 15:36:28,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 15:36:28,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 15:36:28,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 15:36:28,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 15:36:28,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:36:28,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 15:36:29,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 15:36:29,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 15:36:29,009 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 15:36:29,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 15:36:29,010 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 15:36:29,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 15:36:29,010 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 15:36:29,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 15:36:29,010 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 15:36:29,010 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9eb5d9094342cfaa74d8ea4903febd735be5757c093d69b0f8dbb2a26886fda6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 15:36:29,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 15:36:29,303 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 15:36:29,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 15:36:29,306 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 15:36:29,306 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 15:36:29,307 INFO L432 ainManager$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 15:36:30,335 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 15:36:30,524 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 15:36:30,525 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum2.wvr.c [2023-08-30 15:36:30,534 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09af3e764/6a5a5296f2044e8c9525cdbc3ea21156/FLAG356f38d36 [2023-08-30 15:36:30,546 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09af3e764/6a5a5296f2044e8c9525cdbc3ea21156 [2023-08-30 15:36:30,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 15:36:30,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 15:36:30,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 15:36:30,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 15:36:30,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 15:36:30,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f1d117c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30, skipping insertion in model container [2023-08-30 15:36:30,555 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 15:36:30,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 15:36:30,712 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 15:36:30,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:36:30,732 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 15:36:30,760 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 15:36:30,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 15:36:30,774 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:36:30,775 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 15:36:30,779 INFO L208 MainTranslator]: Completed translation [2023-08-30 15:36:30,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30 WrapperNode [2023-08-30 15:36:30,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 15:36:30,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 15:36:30,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 15:36:30,781 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 15:36:30,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,800 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,833 INFO L138 Inliner]: procedures = 25, calls = 52, calls flagged for inlining = 16, calls inlined = 28, statements flattened = 369 [2023-08-30 15:36:30,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 15:36:30,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 15:36:30,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 15:36:30,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 15:36:30,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,873 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 15:36:30,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 15:36:30,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 15:36:30,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 15:36:30,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (1/1) ... [2023-08-30 15:36:30,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 15:36:30,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:36:30,904 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 15:36:30,941 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 15:36:30,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 15:36:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 15:36:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 15:36:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 15:36:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 15:36:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 15:36:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 15:36:30,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 15:36:30,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 15:36:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 15:36:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 15:36:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 15:36:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 15:36:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 15:36:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 15:36:30,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 15:36:30,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 15:36:30,956 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 15:36:31,087 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 15:36:31,088 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 15:36:31,516 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 15:36:32,539 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 15:36:32,539 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-08-30 15:36:32,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:36:32 BoogieIcfgContainer [2023-08-30 15:36:32,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 15:36:32,543 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 15:36:32,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 15:36:32,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 15:36:32,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:36:30" (1/3) ... [2023-08-30 15:36:32,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9991a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:36:32, skipping insertion in model container [2023-08-30 15:36:32,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:36:30" (2/3) ... [2023-08-30 15:36:32,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d9991a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:36:32, skipping insertion in model container [2023-08-30 15:36:32,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:36:32" (3/3) ... [2023-08-30 15:36:32,548 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum2.wvr.c [2023-08-30 15:36:32,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 15:36:32,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 15:36:32,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-08-30 15:36:32,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 15:36:32,906 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 15:36:32,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 234 transitions, 492 flow [2023-08-30 15:36:33,036 INFO L130 PetriNetUnfolder]: 16/231 cut-off events. [2023-08-30 15:36:33,037 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 15:36:33,041 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 15:36:33,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 234 transitions, 492 flow [2023-08-30 15:36:33,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 208 places, 213 transitions, 441 flow [2023-08-30 15:36:33,048 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 15:36:33,054 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 208 places, 213 transitions, 441 flow [2023-08-30 15:36:33,056 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 208 places, 213 transitions, 441 flow [2023-08-30 15:36:33,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 208 places, 213 transitions, 441 flow [2023-08-30 15:36:33,102 INFO L130 PetriNetUnfolder]: 15/213 cut-off events. [2023-08-30 15:36:33,102 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 15:36:33,104 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 15:36:33,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 5928 [2023-08-30 15:37:05,621 INFO L134 LiptonReduction]: Checked pairs total: 7777 [2023-08-30 15:37:05,621 INFO L136 LiptonReduction]: Total number of compositions: 224 [2023-08-30 15:37:05,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 15:37:05,637 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;@5526061e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 15:37:05,638 INFO L358 AbstractCegarLoop]: Starting to check reachability of 91 error locations. [2023-08-30 15:37:05,640 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-30 15:37:05,640 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 15:37:05,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:05,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-30 15:37:05,641 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 15:37:05,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:05,645 INFO L85 PathProgramCache]: Analyzing trace with hash 52974, now seen corresponding path program 1 times [2023-08-30 15:37:05,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:05,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769297456] [2023-08-30 15:37:05,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:05,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:05,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:05,837 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 15:37:05,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:05,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769297456] [2023-08-30 15:37:05,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769297456] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:05,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:37:05,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:37:05,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419735779] [2023-08-30 15:37:05,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:05,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:05,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:05,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:05,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:37:05,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-08-30 15:37:05,894 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 15:37:05,895 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:05,895 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-08-30 15:37:05,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:13,272 INFO L130 PetriNetUnfolder]: 26723/33113 cut-off events. [2023-08-30 15:37:13,273 INFO L131 PetriNetUnfolder]: For 332/332 co-relation queries the response was YES. [2023-08-30 15:37:13,296 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 15:37:13,435 INFO L137 encePairwiseOnDemand]: 432/458 looper letters, 89 selfloop transitions, 4 changer transitions 0/96 dead transitions. [2023-08-30 15:37:13,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 96 transitions, 408 flow [2023-08-30 15:37:13,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:37:13,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:37:13,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 646 transitions. [2023-08-30 15:37:13,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47016011644832606 [2023-08-30 15:37:13,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 646 transitions. [2023-08-30 15:37:13,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 646 transitions. [2023-08-30 15:37:13,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:13,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 646 transitions. [2023-08-30 15:37:13,458 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 15:37:13,463 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 15:37:13,464 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 15:37:13,465 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 155 flow. Second operand 3 states and 646 transitions. [2023-08-30 15:37:13,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 96 transitions, 408 flow [2023-08-30 15:37:13,612 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 15:37:13,614 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 146 flow [2023-08-30 15:37:13,616 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 15:37:13,619 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-08-30 15:37:13,621 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 146 flow [2023-08-30 15:37:13,621 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 15:37:13,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:13,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:37:13,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 15:37:13,622 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 15:37:13,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1643863, now seen corresponding path program 1 times [2023-08-30 15:37:13,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:13,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311847845] [2023-08-30 15:37:13,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:13,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:13,758 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 15:37:13,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:13,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311847845] [2023-08-30 15:37:13,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311847845] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:13,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481005250] [2023-08-30 15:37:13,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:13,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:13,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:13,762 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 15:37:13,765 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 15:37:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:14,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:37:14,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:14,149 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 15:37:14,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:37:14,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481005250] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:14,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:37:14,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-30 15:37:14,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112200054] [2023-08-30 15:37:14,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:14,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 15:37:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 15:37:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:37:14,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-08-30 15:37:14,191 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 15:37:14,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:14,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-08-30 15:37:14,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:21,990 INFO L130 PetriNetUnfolder]: 26723/33111 cut-off events. [2023-08-30 15:37:21,990 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-30 15:37:22,005 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 15:37:22,097 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 87 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-08-30 15:37:22,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 408 flow [2023-08-30 15:37:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:37:22,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:37:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 777 transitions. [2023-08-30 15:37:22,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42412663755458513 [2023-08-30 15:37:22,100 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 777 transitions. [2023-08-30 15:37:22,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 777 transitions. [2023-08-30 15:37:22,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:22,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 777 transitions. [2023-08-30 15:37:22,102 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 15:37:22,104 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 15:37:22,105 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 15:37:22,105 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 146 flow. Second operand 4 states and 777 transitions. [2023-08-30 15:37:22,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 408 flow [2023-08-30 15:37:22,106 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 15:37:22,107 INFO L231 Difference]: Finished difference. Result has 55 places, 53 transitions, 138 flow [2023-08-30 15:37:22,107 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 15:37:22,108 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-08-30 15:37:22,108 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 53 transitions, 138 flow [2023-08-30 15:37:22,108 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 15:37:22,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:22,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 15:37:22,116 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 15:37:22,317 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 15:37:22,317 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 15:37:22,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:22,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1643864, now seen corresponding path program 1 times [2023-08-30 15:37:22,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:22,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029356697] [2023-08-30 15:37:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:22,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:22,364 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 15:37:22,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029356697] [2023-08-30 15:37:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029356697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654399697] [2023-08-30 15:37:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:22,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:22,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:22,367 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 15:37:22,379 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 15:37:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:22,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 15:37:22,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:22,669 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 15:37:22,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:37:22,679 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 15:37:22,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654399697] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:37:22,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:37:22,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-30 15:37:22,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943102389] [2023-08-30 15:37:22,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:37:22,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 15:37:22,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:22,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 15:37:22,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-30 15:37:22,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 458 [2023-08-30 15:37:22,721 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 15:37:22,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:22,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 458 [2023-08-30 15:37:22,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:39,320 INFO L130 PetriNetUnfolder]: 66446/82413 cut-off events. [2023-08-30 15:37:39,321 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-08-30 15:37:39,391 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 15:37:39,617 INFO L137 encePairwiseOnDemand]: 452/458 looper letters, 210 selfloop transitions, 13 changer transitions 0/226 dead transitions. [2023-08-30 15:37:39,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 226 transitions, 978 flow [2023-08-30 15:37:39,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 15:37:39,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 15:37:39,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1255 transitions. [2023-08-30 15:37:39,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566957787481805 [2023-08-30 15:37:39,620 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1255 transitions. [2023-08-30 15:37:39,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1255 transitions. [2023-08-30 15:37:39,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:39,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1255 transitions. [2023-08-30 15:37:39,623 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 15:37:39,626 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 15:37:39,627 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 15:37:39,627 INFO L175 Difference]: Start difference. First operand has 55 places, 53 transitions, 138 flow. Second operand 6 states and 1255 transitions. [2023-08-30 15:37:39,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 226 transitions, 978 flow [2023-08-30 15:37:39,629 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 15:37:39,630 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 229 flow [2023-08-30 15:37:39,630 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 15:37:39,631 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 15:37:39,631 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 229 flow [2023-08-30 15:37:39,632 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 15:37:39,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:39,632 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-30 15:37:39,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-30 15:37:39,837 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 15:37:39,837 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 15:37:39,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:39,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1729339695, now seen corresponding path program 2 times [2023-08-30 15:37:39,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:39,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125797185] [2023-08-30 15:37:39,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:39,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:39,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:40,003 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 15:37:40,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:40,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125797185] [2023-08-30 15:37:40,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125797185] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:37:40,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228564003] [2023-08-30 15:37:40,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 15:37:40,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:37:40,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:37:40,013 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 15:37:40,033 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 15:37:40,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 15:37:40,322 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 15:37:40,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 15:37:40,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:37:40,334 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 15:37:40,335 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-30 15:37:40,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228564003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:40,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-30 15:37:40,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-30 15:37:40,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846330910] [2023-08-30 15:37:40,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:40,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:40,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:40,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:40,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-30 15:37:40,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 458 [2023-08-30 15:37:40,351 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 15:37:40,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:40,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 458 [2023-08-30 15:37:40,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:37:57,814 INFO L130 PetriNetUnfolder]: 67406/83372 cut-off events. [2023-08-30 15:37:57,815 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-30 15:37:57,903 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 15:37:58,110 INFO L137 encePairwiseOnDemand]: 455/458 looper letters, 52 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-30 15:37:58,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 61 transitions, 335 flow [2023-08-30 15:37:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:37:58,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:37:58,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-30 15:37:58,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119359534206696 [2023-08-30 15:37:58,112 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-30 15:37:58,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-30 15:37:58,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:37:58,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-30 15:37:58,116 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 15:37:58,118 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 15:37:58,119 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 15:37:58,119 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 229 flow. Second operand 3 states and 566 transitions. [2023-08-30 15:37:58,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 61 transitions, 335 flow [2023-08-30 15:37:58,120 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 15:37:58,121 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 212 flow [2023-08-30 15:37:58,121 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 15:37:58,122 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-08-30 15:37:58,122 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 212 flow [2023-08-30 15:37:58,123 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 15:37:58,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:37:58,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:37:58,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 15:37:58,328 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 15:37:58,328 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:37:58,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:37:58,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1747061066, now seen corresponding path program 1 times [2023-08-30 15:37:58,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:37:58,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417118124] [2023-08-30 15:37:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:37:58,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:37:58,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:37:58,386 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 15:37:58,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:37:58,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417118124] [2023-08-30 15:37:58,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417118124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:37:58,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:37:58,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 15:37:58,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915859908] [2023-08-30 15:37:58,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:37:58,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:37:58,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:37:58,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:37:58,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:37:58,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 458 [2023-08-30 15:37:58,392 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 15:37:58,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:37:58,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 458 [2023-08-30 15:37:58,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:19,785 INFO L130 PetriNetUnfolder]: 102581/130507 cut-off events. [2023-08-30 15:38:19,786 INFO L131 PetriNetUnfolder]: For 612/612 co-relation queries the response was YES. [2023-08-30 15:38:19,979 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 15:38:20,321 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 94 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2023-08-30 15:38:20,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 98 transitions, 483 flow [2023-08-30 15:38:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 15:38:20,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44468704512372637 [2023-08-30 15:38:20,323 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 15:38:20,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 15:38:20,323 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:20,323 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 15:38:20,324 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 15:38:20,326 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 15:38:20,327 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 15:38:20,327 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 212 flow. Second operand 3 states and 611 transitions. [2023-08-30 15:38:20,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 98 transitions, 483 flow [2023-08-30 15:38:20,328 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 15:38:20,329 INFO L231 Difference]: Finished difference. Result has 62 places, 62 transitions, 214 flow [2023-08-30 15:38:20,329 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 15:38:20,329 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-08-30 15:38:20,329 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 62 transitions, 214 flow [2023-08-30 15:38:20,330 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 15:38:20,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:20,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-30 15:38:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 15:38:20,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:38:20,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1747060959, now seen corresponding path program 1 times [2023-08-30 15:38:20,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:20,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826546868] [2023-08-30 15:38:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:20,407 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 15:38:20,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:20,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826546868] [2023-08-30 15:38:20,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826546868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:20,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:38:20,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 15:38:20,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119517573] [2023-08-30 15:38:20,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:20,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 15:38:20,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 15:38:20,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 15:38:20,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 458 [2023-08-30 15:38:20,476 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 15:38:20,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:20,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 458 [2023-08-30 15:38:20,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:36,673 INFO L130 PetriNetUnfolder]: 79073/101417 cut-off events. [2023-08-30 15:38:36,674 INFO L131 PetriNetUnfolder]: For 5134/5134 co-relation queries the response was YES. [2023-08-30 15:38:36,834 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 15:38:37,109 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 52 selfloop transitions, 7 changer transitions 1/62 dead transitions. [2023-08-30 15:38:37,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 334 flow [2023-08-30 15:38:37,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 15:38:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 15:38:37,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 709 transitions. [2023-08-30 15:38:37,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38700873362445415 [2023-08-30 15:38:37,112 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 709 transitions. [2023-08-30 15:38:37,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 709 transitions. [2023-08-30 15:38:37,113 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:37,113 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 709 transitions. [2023-08-30 15:38:37,114 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 15:38:37,115 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 15:38:37,116 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 15:38:37,116 INFO L175 Difference]: Start difference. First operand has 62 places, 62 transitions, 214 flow. Second operand 4 states and 709 transitions. [2023-08-30 15:38:37,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 334 flow [2023-08-30 15:38:37,119 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 15:38:37,120 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 233 flow [2023-08-30 15:38:37,120 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 15:38:37,120 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-08-30 15:38:37,120 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 233 flow [2023-08-30 15:38:37,121 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 15:38:37,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:37,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:38:37,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 15:38:37,121 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:38:37,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:37,122 INFO L85 PathProgramCache]: Analyzing trace with hash 292825151, now seen corresponding path program 1 times [2023-08-30 15:38:37,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:37,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255425875] [2023-08-30 15:38:37,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:37,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:37,286 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 15:38:37,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:37,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255425875] [2023-08-30 15:38:37,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255425875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 15:38:37,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 15:38:37,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 15:38:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344473613] [2023-08-30 15:38:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 15:38:37,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 15:38:37,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:38:37,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 15:38:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 15:38:37,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 458 [2023-08-30 15:38:37,291 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 15:38:37,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:38:37,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 458 [2023-08-30 15:38:37,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:38:51,682 INFO L130 PetriNetUnfolder]: 72385/91540 cut-off events. [2023-08-30 15:38:51,683 INFO L131 PetriNetUnfolder]: For 1124/2136 co-relation queries the response was YES. [2023-08-30 15:38:51,870 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 15:38:52,298 INFO L137 encePairwiseOnDemand]: 454/458 looper letters, 90 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2023-08-30 15:38:52,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 95 transitions, 490 flow [2023-08-30 15:38:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 15:38:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 15:38:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 611 transitions. [2023-08-30 15:38:52,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44468704512372637 [2023-08-30 15:38:52,300 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 611 transitions. [2023-08-30 15:38:52,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 611 transitions. [2023-08-30 15:38:52,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:38:52,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 611 transitions. [2023-08-30 15:38:52,302 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 15:38:52,304 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 15:38:52,304 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 15:38:52,304 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 233 flow. Second operand 3 states and 611 transitions. [2023-08-30 15:38:52,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 95 transitions, 490 flow [2023-08-30 15:38:52,306 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 15:38:52,306 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 227 flow [2023-08-30 15:38:52,307 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 15:38:52,307 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-08-30 15:38:52,307 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 227 flow [2023-08-30 15:38:52,307 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 15:38:52,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:38:52,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:38:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 15:38:52,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:38:52,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:38:52,308 INFO L85 PathProgramCache]: Analyzing trace with hash 292825145, now seen corresponding path program 1 times [2023-08-30 15:38:52,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:38:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747983284] [2023-08-30 15:38:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:52,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:38:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:52,723 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 15:38:52,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:38:52,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747983284] [2023-08-30 15:38:52,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747983284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:38:52,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466742766] [2023-08-30 15:38:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:38:52,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:38:52,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:38:52,742 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 15:38:52,758 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 15:38:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:38:53,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 15:38:53,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:38:53,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:38:53,165 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 15:38:53,166 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 15:38:53,205 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 15:38:53,235 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:38:53,236 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 15:38:53,268 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 15:38:53,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:38:53,297 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 15:38:53,315 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 15:38:53,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:38:55,515 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 15:38:55,554 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 15:38:57,667 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:38:57,668 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 15:38:57,717 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:38:57,718 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 15:38:57,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:38:57,799 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 15:38:57,830 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:38:57,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 745 treesize of output 714 [2023-08-30 15:38:57,861 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:38:57,862 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 15:38:57,894 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:38:57,894 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 15:43:36,471 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 15:43:36,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466742766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:43:36,471 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:43:36,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 15:43:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737591042] [2023-08-30 15:43:36,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:43:36,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 15:43:36,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:43:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 15:43:36,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=189, Unknown=3, NotChecked=58, Total=306 [2023-08-30 15:43:36,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 458 [2023-08-30 15:43:36,523 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 15:43:36,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:43:36,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 458 [2023-08-30 15:43:36,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:43:38,742 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 15:43:40,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:42,836 WARN L539 Checker$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 15:43:44,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:46,840 WARN L539 Checker$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 15:43:48,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:50,844 WARN L539 Checker$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 15:43:52,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:54,849 WARN L539 Checker$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 15:43:56,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:43:58,853 WARN L539 Checker$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 15:44:00,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:02,862 WARN L539 Checker$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 15:44:04,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:06,940 WARN L539 Checker$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 15:44:08,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:10,996 WARN L539 Checker$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 15:44:13,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:14,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:16,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:18,596 WARN L539 Checker$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 15:44:20,598 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:22,600 WARN L539 Checker$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 15:44:24,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:26,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:28,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:30,608 WARN L539 Checker$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 15:44:32,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:34,615 WARN L539 Checker$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 15:44:36,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:38,620 WARN L539 Checker$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 15:44:40,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:42,640 WARN L539 Checker$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 15:44:44,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:45,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:44:47,731 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 15:45:02,075 INFO L130 PetriNetUnfolder]: 77589/99920 cut-off events. [2023-08-30 15:45:02,076 INFO L131 PetriNetUnfolder]: For 6184/6184 co-relation queries the response was YES. [2023-08-30 15:45:02,244 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 15:45:02,505 INFO L137 encePairwiseOnDemand]: 449/458 looper letters, 87 selfloop transitions, 14 changer transitions 0/103 dead transitions. [2023-08-30 15:45:02,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 103 transitions, 533 flow [2023-08-30 15:45:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:45:02,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:45:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1139 transitions. [2023-08-30 15:45:02,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31086244541484714 [2023-08-30 15:45:02,508 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1139 transitions. [2023-08-30 15:45:02,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1139 transitions. [2023-08-30 15:45:02,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:45:02,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1139 transitions. [2023-08-30 15:45:02,510 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 15:45:02,513 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 15:45:02,514 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 15:45:02,514 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 227 flow. Second operand 8 states and 1139 transitions. [2023-08-30 15:45:02,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 103 transitions, 533 flow [2023-08-30 15:45:02,518 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 15:45:02,519 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 293 flow [2023-08-30 15:45:02,519 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 15:45:02,520 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -2 predicate places. [2023-08-30 15:45:02,520 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 293 flow [2023-08-30 15:45:02,521 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 15:45:02,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:45:02,521 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:45:02,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-30 15:45:02,726 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 15:45:02,727 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:45:02,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:45:02,727 INFO L85 PathProgramCache]: Analyzing trace with hash 292825142, now seen corresponding path program 1 times [2023-08-30 15:45:02,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:45:02,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040369054] [2023-08-30 15:45:02,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:02,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:45:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:02,953 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 15:45:02,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:45:02,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040369054] [2023-08-30 15:45:02,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040369054] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:45:02,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600192225] [2023-08-30 15:45:02,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:02,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:45:02,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:45:02,955 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 15:45:02,957 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 15:45:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:45:03,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:45:03,275 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 15:45:03,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:45:03,296 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 15:45:03,304 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 15:45:03,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:45:03,346 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:03,346 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 15:45:03,352 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:03,352 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 15:45:03,354 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 15:45:03,379 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 15:45:03,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600192225] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:45:03,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:45:03,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 15:45:03,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511358085] [2023-08-30 15:45:03,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:45:03,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:45:03,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:45:03,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:45:03,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=145, Unknown=1, NotChecked=0, Total=182 [2023-08-30 15:45:03,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 458 [2023-08-30 15:45:03,768 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 15:45:03,769 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:45:03,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 458 [2023-08-30 15:45:03,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:45:24,496 INFO L130 PetriNetUnfolder]: 102953/133712 cut-off events. [2023-08-30 15:45:24,496 INFO L131 PetriNetUnfolder]: For 17197/17197 co-relation queries the response was YES. [2023-08-30 15:45:24,812 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 15:45:25,259 INFO L137 encePairwiseOnDemand]: 441/458 looper letters, 72 selfloop transitions, 30 changer transitions 0/104 dead transitions. [2023-08-30 15:45:25,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 104 transitions, 589 flow [2023-08-30 15:45:25,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:45:25,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:45:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1504 transitions. [2023-08-30 15:45:25,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648714216399806 [2023-08-30 15:45:25,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1504 transitions. [2023-08-30 15:45:25,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1504 transitions. [2023-08-30 15:45:25,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:45:25,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1504 transitions. [2023-08-30 15:45:25,277 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 15:45:25,280 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 15:45:25,281 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 15:45:25,281 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 293 flow. Second operand 9 states and 1504 transitions. [2023-08-30 15:45:25,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 104 transitions, 589 flow [2023-08-30 15:45:25,288 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 15:45:25,289 INFO L231 Difference]: Finished difference. Result has 82 places, 77 transitions, 396 flow [2023-08-30 15:45:25,290 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 15:45:25,290 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2023-08-30 15:45:25,290 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 77 transitions, 396 flow [2023-08-30 15:45:25,291 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 15:45:25,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:45:25,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:45:25,297 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 15:45:25,496 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 15:45:25,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:45:25,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:45:25,497 INFO L85 PathProgramCache]: Analyzing trace with hash 292825144, now seen corresponding path program 1 times [2023-08-30 15:45:25,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:45:25,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218544079] [2023-08-30 15:45:25,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:25,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:45:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:25,824 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 15:45:25,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:45:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218544079] [2023-08-30 15:45:25,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218544079] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:45:25,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175451259] [2023-08-30 15:45:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:45:25,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:45:25,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:45:25,826 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 15:45:25,833 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 15:45:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:45:26,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-30 15:45:26,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:45:26,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:45:26,170 INFO L321 Elim1Store]: treesize reduction 56, result has 37.8 percent of original size [2023-08-30 15:45:26,170 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 15:45:26,197 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 15:45:26,218 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-30 15:45:26,218 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 15:45:26,239 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 16 treesize of output 18 [2023-08-30 15:45:26,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:45:26,256 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 15:45:26,265 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 15:45:26,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:45:28,373 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 15:45:28,396 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 15:45:28,478 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:28,478 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 15:45:28,523 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:28,523 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 15:45:28,574 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:28,575 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 15:45:28,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:28,601 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 15:45:28,654 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:28,655 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 15:45:28,682 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:45:28,684 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 15:46:45,213 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 15:46:45,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175451259] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:46:45,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:46:45,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 15:46:45,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381010164] [2023-08-30 15:46:45,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:46:45,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 15:46:45,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:46:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 15:46:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=189, Unknown=3, NotChecked=58, Total=306 [2023-08-30 15:46:45,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 458 [2023-08-30 15:46:45,218 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 15:46:45,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:46:45,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 458 [2023-08-30 15:46:45,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:46:47,455 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 15:46:49,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:46:51,613 WARN L539 Checker$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 15:46:53,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:46:55,652 WARN L539 Checker$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 15:46:57,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:46:59,657 WARN L539 Checker$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 15:47:01,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:03,661 WARN L539 Checker$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 15:47:05,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:07,665 WARN L539 Checker$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 15:47:09,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:11,671 WARN L539 Checker$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 15:47:13,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:15,678 WARN L539 Checker$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 15:47:17,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:20,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:22,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:24,125 WARN L539 Checker$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 15:47:26,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:28,133 WARN L539 Checker$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 15:47:30,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:32,138 WARN L539 Checker$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 15:47:34,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:36,144 WARN L539 Checker$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 15:47:38,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:40,149 WARN L539 Checker$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 15:47:42,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:44,155 WARN L539 Checker$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 15:47:46,161 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:48,164 WARN L539 Checker$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 15:47:50,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:52,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:54,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:47:56,280 WARN L539 Checker$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 15:47:58,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-30 15:48:00,339 WARN L539 Checker$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 15:48:19,785 INFO L130 PetriNetUnfolder]: 98749/129456 cut-off events. [2023-08-30 15:48:19,786 INFO L131 PetriNetUnfolder]: For 61046/61046 co-relation queries the response was YES. [2023-08-30 15:48:20,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289727 conditions, 129456 events. 98749/129456 cut-off events. For 61046/61046 co-relation queries the response was YES. Maximal size of possible extension queue 14922. Compared 930695 event pairs, 48432 based on Foata normal form. 4/42344 useless extension candidates. Maximal degree in co-relation 289644. Up to 117845 conditions per place. [2023-08-30 15:48:20,423 INFO L137 encePairwiseOnDemand]: 449/458 looper letters, 87 selfloop transitions, 16 changer transitions 0/105 dead transitions. [2023-08-30 15:48:20,424 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 673 flow [2023-08-30 15:48:20,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 15:48:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 15:48:20,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1137 transitions. [2023-08-30 15:48:20,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3103165938864629 [2023-08-30 15:48:20,432 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1137 transitions. [2023-08-30 15:48:20,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1137 transitions. [2023-08-30 15:48:20,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:20,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1137 transitions. [2023-08-30 15:48:20,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 142.125) internal successors, (1137), 8 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 15:48:20,437 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 15:48:20,437 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 15:48:20,438 INFO L175 Difference]: Start difference. First operand has 82 places, 77 transitions, 396 flow. Second operand 8 states and 1137 transitions. [2023-08-30 15:48:20,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 673 flow [2023-08-30 15:48:20,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 105 transitions, 641 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 15:48:20,460 INFO L231 Difference]: Finished difference. Result has 85 places, 78 transitions, 410 flow [2023-08-30 15:48:20,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=410, PETRI_PLACES=85, PETRI_TRANSITIONS=78} [2023-08-30 15:48:20,461 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2023-08-30 15:48:20,461 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 78 transitions, 410 flow [2023-08-30 15:48:20,462 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 15:48:20,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:20,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 15:48:20,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 15:48:20,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:20,669 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:48:20,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash 292825141, now seen corresponding path program 1 times [2023-08-30 15:48:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463935023] [2023-08-30 15:48:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:20,823 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 15:48:20,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463935023] [2023-08-30 15:48:20,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463935023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:20,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145686925] [2023-08-30 15:48:20,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:20,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:20,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:20,825 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:48:20,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 15:48:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:21,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-30 15:48:21,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:21,153 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 15:48:21,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 15:48:21,175 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 15:48:21,184 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 15:48:21,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:48:21,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:48:21,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2023-08-30 15:48:21,238 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-30 15:48:21,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 35 [2023-08-30 15:48:21,240 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 7 treesize of output 5 [2023-08-30 15:48:21,266 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 15:48:21,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145686925] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:48:21,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:48:21,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-30 15:48:21,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188932817] [2023-08-30 15:48:21,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:48:21,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:48:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:21,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:48:21,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:48:21,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 458 [2023-08-30 15:48:21,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 78 transitions, 410 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 15:48:21,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:21,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 458 [2023-08-30 15:48:21,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 15:48:43,689 INFO L130 PetriNetUnfolder]: 108097/140824 cut-off events. [2023-08-30 15:48:43,690 INFO L131 PetriNetUnfolder]: For 70831/70831 co-relation queries the response was YES. [2023-08-30 15:48:43,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314649 conditions, 140824 events. 108097/140824 cut-off events. For 70831/70831 co-relation queries the response was YES. Maximal size of possible extension queue 16163. Compared 1011996 event pairs, 32912 based on Foata normal form. 4/44104 useless extension candidates. Maximal degree in co-relation 314568. Up to 87656 conditions per place. [2023-08-30 15:48:44,385 INFO L137 encePairwiseOnDemand]: 441/458 looper letters, 71 selfloop transitions, 35 changer transitions 0/108 dead transitions. [2023-08-30 15:48:44,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 108 transitions, 708 flow [2023-08-30 15:48:44,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 15:48:44,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 15:48:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1502 transitions. [2023-08-30 15:48:44,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36438622028141676 [2023-08-30 15:48:44,389 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1502 transitions. [2023-08-30 15:48:44,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1502 transitions. [2023-08-30 15:48:44,389 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 15:48:44,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1502 transitions. [2023-08-30 15:48:44,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 166.88888888888889) internal successors, (1502), 9 states have internal predecessors, (1502), 0 states have call successors, (0), 0 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 15:48:44,395 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 15:48:44,395 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 15:48:44,395 INFO L175 Difference]: Start difference. First operand has 85 places, 78 transitions, 410 flow. Second operand 9 states and 1502 transitions. [2023-08-30 15:48:44,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 108 transitions, 708 flow [2023-08-30 15:48:45,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 108 transitions, 686 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-30 15:48:45,008 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 502 flow [2023-08-30 15:48:45,008 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=502, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-08-30 15:48:45,009 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2023-08-30 15:48:45,009 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 502 flow [2023-08-30 15:48:45,010 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 15:48:45,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 15:48:45,010 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-30 15:48:45,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-30 15:48:45,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:45,217 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 88 more)] === [2023-08-30 15:48:45,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 15:48:45,217 INFO L85 PathProgramCache]: Analyzing trace with hash 292835477, now seen corresponding path program 1 times [2023-08-30 15:48:45,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 15:48:45,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376575465] [2023-08-30 15:48:45,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:45,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 15:48:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:45,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-30 15:48:45,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 15:48:45,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376575465] [2023-08-30 15:48:45,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376575465] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 15:48:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365927296] [2023-08-30 15:48:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 15:48:45,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 15:48:45,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 15:48:45,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 15:48:45,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 15:48:45,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 15:48:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 15:48:45,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 15:48:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:48:45,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 15:48:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 15:48:45,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365927296] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 15:48:45,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 15:48:45,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-30 15:48:45,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647068712] [2023-08-30 15:48:45,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 15:48:45,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 15:48:45,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 15:48:45,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 15:48:45,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-08-30 15:48:45,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 458 [2023-08-30 15:48:45,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 502 flow. Second operand has 14 states, 14 states have (on average 164.28571428571428) internal successors, (2300), 14 states have internal predecessors, (2300), 0 states have call successors, (0), 0 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 15:48:45,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 15:48:45,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 458 [2023-08-30 15:48:45,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand