/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:57:17,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:57:17,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:57:17,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:57:17,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:57:17,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:57:17,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:57:17,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:57:17,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:57:17,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:57:17,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:57:17,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:57:17,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:57:17,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:57:17,942 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:57:17,943 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:57:17,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:57:17,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:57:17,949 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:57:17,951 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:57:17,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:57:17,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:57:17,956 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:57:17,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:57:17,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:57:17,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:57:17,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:57:17,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:57:17,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:57:17,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:57:17,959 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:57:17,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:57:17,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:57:17,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:57:17,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:57:17,961 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:57:17,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:57:17,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:57:17,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:57:17,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:57:17,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:57:17,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:57:17,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:57:17,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:57:17,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:57:17,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:57:17,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:57:17,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:57:17,992 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:57:17,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:57:17,993 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:57:17,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:57:17,993 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:57:17,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:57:17,993 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:57:17,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:57:17,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:17,995 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:57:17,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:57:17,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:57:17,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:57:17,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:57:17,996 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:57:17,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:57:17,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:57:18,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:57:18,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:57:18,207 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:57:18,207 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:57:18,208 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:57:18,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2022-09-16 11:57:18,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb3f6b9e/826049eda4b24c9093a21c3fd8648c42/FLAGe3b2a66ab [2022-09-16 11:57:18,637 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:57:18,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt2.wvr.c [2022-09-16 11:57:18,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb3f6b9e/826049eda4b24c9093a21c3fd8648c42/FLAGe3b2a66ab [2022-09-16 11:57:19,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fb3f6b9e/826049eda4b24c9093a21c3fd8648c42 [2022-09-16 11:57:19,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:57:19,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:57:19,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:19,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:57:19,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:57:19,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e22c51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19, skipping insertion in model container [2022-09-16 11:57:19,075 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:57:19,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:57:19,272 WARN L230 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-sum-alt2.wvr.c[2525,2538] [2022-09-16 11:57:19,278 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:19,297 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:57:19,312 WARN L230 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-sum-alt2.wvr.c[2525,2538] [2022-09-16 11:57:19,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:57:19,325 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:57:19,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19 WrapperNode [2022-09-16 11:57:19,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:57:19,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:19,326 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:57:19,326 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:57:19,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,337 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,356 INFO L138 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 241 [2022-09-16 11:57:19,356 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:57:19,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:57:19,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:57:19,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:57:19,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:57:19,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:57:19,380 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:57:19,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:57:19,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (1/1) ... [2022-09-16 11:57:19,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:57:19,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:19,406 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) [2022-09-16 11:57:19,408 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 [2022-09-16 11:57:19,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:57:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:57:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:57:19,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:57:19,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:57:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:57:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:57:19,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:57:19,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:57:19,438 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:57:19,510 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:57:19,512 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:57:19,836 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:57:20,228 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:57:20,229 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:57:20,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:20 BoogieIcfgContainer [2022-09-16 11:57:20,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:57:20,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:57:20,248 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:57:20,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:57:20,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:57:19" (1/3) ... [2022-09-16 11:57:20,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d891c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:20, skipping insertion in model container [2022-09-16 11:57:20,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:57:19" (2/3) ... [2022-09-16 11:57:20,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d891c21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:57:20, skipping insertion in model container [2022-09-16 11:57:20,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:57:20" (3/3) ... [2022-09-16 11:57:20,253 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt2.wvr.c [2022-09-16 11:57:20,266 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:57:20,266 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-09-16 11:57:20,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:57:20,377 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:57:20,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 396 flow [2022-09-16 11:57:20,495 INFO L130 PetriNetUnfolder]: 12/183 cut-off events. [2022-09-16 11:57:20,495 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:57:20,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 183 events. 12/183 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 233 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 136. Up to 2 conditions per place. [2022-09-16 11:57:20,501 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 396 flow [2022-09-16 11:57:20,507 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 162 transitions, 339 flow [2022-09-16 11:57:20,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:57:20,529 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=false, 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;@53786161, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:57:20,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-09-16 11:57:20,540 INFO L130 PetriNetUnfolder]: 3/63 cut-off events. [2022-09-16 11:57:20,541 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:57:20,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:20,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:20,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:20,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1847314700, now seen corresponding path program 1 times [2022-09-16 11:57:20,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:20,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683527566] [2022-09-16 11:57:20,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:20,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:20,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:20,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:20,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683527566] [2022-09-16 11:57:20,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683527566] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:20,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:20,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:20,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076094123] [2022-09-16 11:57:20,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:20,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:20,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:20,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:20,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:20,825 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 186 [2022-09-16 11:57:20,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 162 transitions, 339 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:20,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:20,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 186 [2022-09-16 11:57:20,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:21,726 INFO L130 PetriNetUnfolder]: 1911/3943 cut-off events. [2022-09-16 11:57:21,726 INFO L131 PetriNetUnfolder]: For 590/600 co-relation queries the response was YES. [2022-09-16 11:57:21,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6812 conditions, 3943 events. 1911/3943 cut-off events. For 590/600 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 27815 event pairs, 910 based on Foata normal form. 384/1985 useless extension candidates. Maximal degree in co-relation 3224. Up to 1265 conditions per place. [2022-09-16 11:57:21,766 INFO L137 encePairwiseOnDemand]: 167/186 looper letters, 56 selfloop transitions, 4 changer transitions 3/177 dead transitions. [2022-09-16 11:57:21,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 177 transitions, 504 flow [2022-09-16 11:57:21,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:21,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:21,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 776 transitions. [2022-09-16 11:57:21,782 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8344086021505376 [2022-09-16 11:57:21,783 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 776 transitions. [2022-09-16 11:57:21,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 776 transitions. [2022-09-16 11:57:21,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:21,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 776 transitions. [2022-09-16 11:57:21,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.2) internal successors, (776), 5 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:21,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:21,800 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:21,802 INFO L175 Difference]: Start difference. First operand has 161 places, 162 transitions, 339 flow. Second operand 5 states and 776 transitions. [2022-09-16 11:57:21,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 177 transitions, 504 flow [2022-09-16 11:57:21,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 177 transitions, 486 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:57:21,811 INFO L231 Difference]: Finished difference. Result has 157 places, 149 transitions, 328 flow [2022-09-16 11:57:21,813 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=328, PETRI_PLACES=157, PETRI_TRANSITIONS=149} [2022-09-16 11:57:21,816 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, -4 predicate places. [2022-09-16 11:57:21,816 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 149 transitions, 328 flow [2022-09-16 11:57:21,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:21,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:21,817 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:21,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:57:21,818 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:21,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:21,818 INFO L85 PathProgramCache]: Analyzing trace with hash 159969561, now seen corresponding path program 1 times [2022-09-16 11:57:21,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:21,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351445898] [2022-09-16 11:57:21,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:21,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:21,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:21,926 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:21,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:21,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351445898] [2022-09-16 11:57:21,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351445898] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:21,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405843559] [2022-09-16 11:57:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:21,956 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) [2022-09-16 11:57:21,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:57:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:22,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:22,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:22,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:22,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:22,208 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:22,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405843559] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:22,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:22,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:57:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876713794] [2022-09-16 11:57:22,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:22,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:57:22,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:22,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:57:22,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:57:22,213 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 186 [2022-09-16 11:57:22,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 149 transitions, 328 flow. Second operand has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:22,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:22,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 186 [2022-09-16 11:57:22,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:23,926 INFO L130 PetriNetUnfolder]: 4776/9776 cut-off events. [2022-09-16 11:57:23,926 INFO L131 PetriNetUnfolder]: For 431/456 co-relation queries the response was YES. [2022-09-16 11:57:23,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16506 conditions, 9776 events. 4776/9776 cut-off events. For 431/456 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 75311 event pairs, 2275 based on Foata normal form. 3/3939 useless extension candidates. Maximal degree in co-relation 13160. Up to 1260 conditions per place. [2022-09-16 11:57:24,003 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 128 selfloop transitions, 18 changer transitions 0/260 dead transitions. [2022-09-16 11:57:24,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 260 transitions, 888 flow [2022-09-16 11:57:24,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:57:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:57:24,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2633 transitions. [2022-09-16 11:57:24,007 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7864396654719236 [2022-09-16 11:57:24,008 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2633 transitions. [2022-09-16 11:57:24,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2633 transitions. [2022-09-16 11:57:24,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:24,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2633 transitions. [2022-09-16 11:57:24,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 146.27777777777777) internal successors, (2633), 18 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:24,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:24,018 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:24,018 INFO L175 Difference]: Start difference. First operand has 157 places, 149 transitions, 328 flow. Second operand 18 states and 2633 transitions. [2022-09-16 11:57:24,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 260 transitions, 888 flow [2022-09-16 11:57:24,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 260 transitions, 886 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:57:24,022 INFO L231 Difference]: Finished difference. Result has 174 places, 161 transitions, 432 flow [2022-09-16 11:57:24,023 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=432, PETRI_PLACES=174, PETRI_TRANSITIONS=161} [2022-09-16 11:57:24,023 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 13 predicate places. [2022-09-16 11:57:24,023 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 161 transitions, 432 flow [2022-09-16 11:57:24,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 140.66666666666666) internal successors, (1688), 12 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:24,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:24,025 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:24,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:57:24,242 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 [2022-09-16 11:57:24,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:24,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:24,243 INFO L85 PathProgramCache]: Analyzing trace with hash 664089873, now seen corresponding path program 1 times [2022-09-16 11:57:24,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:24,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401217509] [2022-09-16 11:57:24,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:24,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:24,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:24,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401217509] [2022-09-16 11:57:24,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401217509] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:24,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529676263] [2022-09-16 11:57:24,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:24,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:24,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:24,324 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) [2022-09-16 11:57:24,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:57:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:24,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:57:24,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:24,486 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:24,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:57:24,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529676263] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:24,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:57:24,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:57:24,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118284588] [2022-09-16 11:57:24,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:24,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:57:24,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:24,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:57:24,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:57:24,488 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 186 [2022-09-16 11:57:24,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 161 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:24,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:24,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 186 [2022-09-16 11:57:24,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:25,874 INFO L130 PetriNetUnfolder]: 4776/9772 cut-off events. [2022-09-16 11:57:25,874 INFO L131 PetriNetUnfolder]: For 467/492 co-relation queries the response was YES. [2022-09-16 11:57:25,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16524 conditions, 9772 events. 4776/9772 cut-off events. For 467/492 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 75803 event pairs, 2275 based on Foata normal form. 4/3936 useless extension candidates. Maximal degree in co-relation 13203. Up to 5024 conditions per place. [2022-09-16 11:57:25,948 INFO L137 encePairwiseOnDemand]: 181/186 looper letters, 57 selfloop transitions, 11 changer transitions 0/182 dead transitions. [2022-09-16 11:57:25,948 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 182 transitions, 599 flow [2022-09-16 11:57:25,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:57:25,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:57:25,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1026 transitions. [2022-09-16 11:57:25,951 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7880184331797235 [2022-09-16 11:57:25,951 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1026 transitions. [2022-09-16 11:57:25,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1026 transitions. [2022-09-16 11:57:25,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:25,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1026 transitions. [2022-09-16 11:57:25,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.57142857142858) internal successors, (1026), 7 states have internal predecessors, (1026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:25,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:25,956 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 186.0) internal successors, (1488), 8 states have internal predecessors, (1488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:25,956 INFO L175 Difference]: Start difference. First operand has 174 places, 161 transitions, 432 flow. Second operand 7 states and 1026 transitions. [2022-09-16 11:57:25,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 182 transitions, 599 flow [2022-09-16 11:57:25,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 182 transitions, 567 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:57:25,963 INFO L231 Difference]: Finished difference. Result has 170 places, 157 transitions, 395 flow [2022-09-16 11:57:25,963 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=395, PETRI_PLACES=170, PETRI_TRANSITIONS=157} [2022-09-16 11:57:25,965 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 9 predicate places. [2022-09-16 11:57:25,966 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 157 transitions, 395 flow [2022-09-16 11:57:25,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 140.33333333333334) internal successors, (842), 6 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:25,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:25,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:26,002 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:57:26,180 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 [2022-09-16 11:57:26,180 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:26,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash -565198698, now seen corresponding path program 1 times [2022-09-16 11:57:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:26,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882052070] [2022-09-16 11:57:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:26,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:26,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882052070] [2022-09-16 11:57:26,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882052070] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:26,252 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:26,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:57:26,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399334220] [2022-09-16 11:57:26,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:26,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:57:26,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:26,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:57:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:57:26,254 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 186 [2022-09-16 11:57:26,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 157 transitions, 395 flow. Second operand has 7 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:26,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:26,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 186 [2022-09-16 11:57:26,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:28,133 INFO L130 PetriNetUnfolder]: 7380/14754 cut-off events. [2022-09-16 11:57:28,133 INFO L131 PetriNetUnfolder]: For 364/364 co-relation queries the response was YES. [2022-09-16 11:57:28,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25652 conditions, 14754 events. 7380/14754 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 124853 event pairs, 4316 based on Foata normal form. 0/6587 useless extension candidates. Maximal degree in co-relation 23688. Up to 9477 conditions per place. [2022-09-16 11:57:28,198 INFO L137 encePairwiseOnDemand]: 177/186 looper letters, 79 selfloop transitions, 8 changer transitions 0/194 dead transitions. [2022-09-16 11:57:28,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 194 transitions, 652 flow [2022-09-16 11:57:28,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:57:28,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-16 11:57:28,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1106 transitions. [2022-09-16 11:57:28,201 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7432795698924731 [2022-09-16 11:57:28,201 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1106 transitions. [2022-09-16 11:57:28,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1106 transitions. [2022-09-16 11:57:28,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:28,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1106 transitions. [2022-09-16 11:57:28,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:28,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:28,205 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 186.0) internal successors, (1674), 9 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:28,205 INFO L175 Difference]: Start difference. First operand has 170 places, 157 transitions, 395 flow. Second operand 8 states and 1106 transitions. [2022-09-16 11:57:28,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 194 transitions, 652 flow [2022-09-16 11:57:28,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 194 transitions, 638 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:57:28,208 INFO L231 Difference]: Finished difference. Result has 175 places, 159 transitions, 413 flow [2022-09-16 11:57:28,208 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=413, PETRI_PLACES=175, PETRI_TRANSITIONS=159} [2022-09-16 11:57:28,209 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 14 predicate places. [2022-09-16 11:57:28,209 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 159 transitions, 413 flow [2022-09-16 11:57:28,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:28,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:28,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:28,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:57:28,210 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:28,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:28,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1740727053, now seen corresponding path program 1 times [2022-09-16 11:57:28,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:28,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452448467] [2022-09-16 11:57:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:28,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452448467] [2022-09-16 11:57:28,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452448467] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:28,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:28,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:57:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667069749] [2022-09-16 11:57:28,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:28,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:57:28,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:57:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:57:28,332 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 186 [2022-09-16 11:57:28,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 159 transitions, 413 flow. Second operand has 10 states, 10 states have (on average 108.7) internal successors, (1087), 10 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:28,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:28,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 186 [2022-09-16 11:57:28,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:30,338 INFO L130 PetriNetUnfolder]: 8176/16330 cut-off events. [2022-09-16 11:57:30,339 INFO L131 PetriNetUnfolder]: For 1402/1432 co-relation queries the response was YES. [2022-09-16 11:57:30,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29877 conditions, 16330 events. 8176/16330 cut-off events. For 1402/1432 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 138814 event pairs, 6722 based on Foata normal form. 30/9238 useless extension candidates. Maximal degree in co-relation 29185. Up to 11615 conditions per place. [2022-09-16 11:57:30,422 INFO L137 encePairwiseOnDemand]: 172/186 looper letters, 83 selfloop transitions, 13 changer transitions 2/192 dead transitions. [2022-09-16 11:57:30,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 192 transitions, 684 flow [2022-09-16 11:57:30,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:57:30,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:57:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1471 transitions. [2022-09-16 11:57:30,430 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.608354011579818 [2022-09-16 11:57:30,431 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1471 transitions. [2022-09-16 11:57:30,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1471 transitions. [2022-09-16 11:57:30,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:30,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1471 transitions. [2022-09-16 11:57:30,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.15384615384616) internal successors, (1471), 13 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:30,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:30,438 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:30,438 INFO L175 Difference]: Start difference. First operand has 175 places, 159 transitions, 413 flow. Second operand 13 states and 1471 transitions. [2022-09-16 11:57:30,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 192 transitions, 684 flow [2022-09-16 11:57:30,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 192 transitions, 674 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:57:30,443 INFO L231 Difference]: Finished difference. Result has 188 places, 163 transitions, 456 flow [2022-09-16 11:57:30,444 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=456, PETRI_PLACES=188, PETRI_TRANSITIONS=163} [2022-09-16 11:57:30,446 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 27 predicate places. [2022-09-16 11:57:30,446 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 163 transitions, 456 flow [2022-09-16 11:57:30,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 108.7) internal successors, (1087), 10 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:30,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:30,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:30,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:57:30,447 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:30,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:30,447 INFO L85 PathProgramCache]: Analyzing trace with hash 466015659, now seen corresponding path program 1 times [2022-09-16 11:57:30,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:30,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532216977] [2022-09-16 11:57:30,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:30,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:30,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:57:30,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:30,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532216977] [2022-09-16 11:57:30,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532216977] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:30,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:30,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:57:30,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204951256] [2022-09-16 11:57:30,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:30,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:57:30,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:30,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:57:30,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:57:30,535 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-09-16 11:57:30,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 163 transitions, 456 flow. Second operand has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:30,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:30,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-09-16 11:57:30,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:31,869 INFO L130 PetriNetUnfolder]: 4246/9750 cut-off events. [2022-09-16 11:57:31,870 INFO L131 PetriNetUnfolder]: For 424/436 co-relation queries the response was YES. [2022-09-16 11:57:31,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16516 conditions, 9750 events. 4246/9750 cut-off events. For 424/436 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 86118 event pairs, 966 based on Foata normal form. 4/4905 useless extension candidates. Maximal degree in co-relation 16257. Up to 3645 conditions per place. [2022-09-16 11:57:31,923 INFO L137 encePairwiseOnDemand]: 182/186 looper letters, 36 selfloop transitions, 2 changer transitions 0/180 dead transitions. [2022-09-16 11:57:31,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 180 transitions, 571 flow [2022-09-16 11:57:31,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:57:31,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:57:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 484 transitions. [2022-09-16 11:57:31,925 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8673835125448028 [2022-09-16 11:57:31,926 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 484 transitions. [2022-09-16 11:57:31,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 484 transitions. [2022-09-16 11:57:31,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:31,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 484 transitions. [2022-09-16 11:57:31,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.33333333333334) internal successors, (484), 3 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:31,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:31,930 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:31,931 INFO L175 Difference]: Start difference. First operand has 188 places, 163 transitions, 456 flow. Second operand 3 states and 484 transitions. [2022-09-16 11:57:31,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 180 transitions, 571 flow [2022-09-16 11:57:31,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 180 transitions, 554 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:57:31,938 INFO L231 Difference]: Finished difference. Result has 184 places, 164 transitions, 453 flow [2022-09-16 11:57:31,938 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=184, PETRI_TRANSITIONS=164} [2022-09-16 11:57:31,945 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 23 predicate places. [2022-09-16 11:57:31,946 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 164 transitions, 453 flow [2022-09-16 11:57:31,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:31,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:31,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:31,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:57:31,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:31,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:31,947 INFO L85 PathProgramCache]: Analyzing trace with hash 466015654, now seen corresponding path program 1 times [2022-09-16 11:57:31,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:31,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677938471] [2022-09-16 11:57:31,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:31,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:32,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677938471] [2022-09-16 11:57:32,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677938471] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533379179] [2022-09-16 11:57:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:32,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:32,200 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) [2022-09-16 11:57:32,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:57:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:32,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjunts are in the unsatisfiable core [2022-09-16 11:57:32,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:32,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:57:32,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:32,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:57:32,585 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:32,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:32,626 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int))) (< 0 (+ 9223372039002259456 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119) c_~A~0.base) c_~A~0.offset)))) is different from false [2022-09-16 11:57:32,672 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:57:32,678 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:57:32,682 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_119 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_119) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:57:32,718 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:32,718 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:57:32,726 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:32,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 38 treesize of output 36 [2022-09-16 11:57:32,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:57:32,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533379179] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:32,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:32,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-09-16 11:57:32,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461258349] [2022-09-16 11:57:32,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:32,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:57:32,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:32,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:57:32,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=827, Unknown=4, NotChecked=244, Total=1190 [2022-09-16 11:57:32,889 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 186 [2022-09-16 11:57:32,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 164 transitions, 453 flow. Second operand has 35 states, 35 states have (on average 114.14285714285714) internal successors, (3995), 35 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:32,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:32,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 186 [2022-09-16 11:57:32,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:39,630 INFO L130 PetriNetUnfolder]: 23565/43424 cut-off events. [2022-09-16 11:57:39,630 INFO L131 PetriNetUnfolder]: For 1972/1972 co-relation queries the response was YES. [2022-09-16 11:57:39,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78699 conditions, 43424 events. 23565/43424 cut-off events. For 1972/1972 co-relation queries the response was YES. Maximal size of possible extension queue 1304. Compared 403009 event pairs, 9421 based on Foata normal form. 0/21658 useless extension candidates. Maximal degree in co-relation 78052. Up to 22133 conditions per place. [2022-09-16 11:57:40,057 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 106 selfloop transitions, 32 changer transitions 0/235 dead transitions. [2022-09-16 11:57:40,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 235 transitions, 898 flow [2022-09-16 11:57:40,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:57:40,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:57:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2148 transitions. [2022-09-16 11:57:40,083 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6415770609318996 [2022-09-16 11:57:40,083 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2148 transitions. [2022-09-16 11:57:40,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2148 transitions. [2022-09-16 11:57:40,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:40,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2148 transitions. [2022-09-16 11:57:40,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 119.33333333333333) internal successors, (2148), 18 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:40,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:40,092 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:40,092 INFO L175 Difference]: Start difference. First operand has 184 places, 164 transitions, 453 flow. Second operand 18 states and 2148 transitions. [2022-09-16 11:57:40,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 235 transitions, 898 flow [2022-09-16 11:57:40,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 235 transitions, 895 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:57:40,118 INFO L231 Difference]: Finished difference. Result has 210 places, 188 transitions, 650 flow [2022-09-16 11:57:40,119 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=650, PETRI_PLACES=210, PETRI_TRANSITIONS=188} [2022-09-16 11:57:40,119 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 49 predicate places. [2022-09-16 11:57:40,120 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 188 transitions, 650 flow [2022-09-16 11:57:40,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 114.14285714285714) internal successors, (3995), 35 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:40,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:40,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:40,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:57:40,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:40,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:40,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:40,332 INFO L85 PathProgramCache]: Analyzing trace with hash 466015657, now seen corresponding path program 1 times [2022-09-16 11:57:40,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:40,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655185296] [2022-09-16 11:57:40,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:40,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:40,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:40,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655185296] [2022-09-16 11:57:40,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655185296] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:57:40,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287007783] [2022-09-16 11:57:40,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:40,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:57:40,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:57:40,531 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) [2022-09-16 11:57:40,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:57:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:40,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 25 conjunts are in the unsatisfiable core [2022-09-16 11:57:40,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:57:40,734 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:57:40,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:57:40,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:57:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:40,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:57:40,939 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_146) c_~A~0.base) c_~A~0.offset) 4294967295)) is different from false [2022-09-16 11:57:40,972 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_146) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 4294967295)) is different from false [2022-09-16 11:57:40,977 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_146) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 4294967295)) is different from false [2022-09-16 11:57:40,981 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_146 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_146) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967295)) is different from false [2022-09-16 11:57:41,006 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:41,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:57:41,011 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:57:41,011 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 34 treesize of output 32 [2022-09-16 11:57:41,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:57:41,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287007783] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:57:41,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:57:41,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 34 [2022-09-16 11:57:41,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623411094] [2022-09-16 11:57:41,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:57:41,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:57:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:41,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:57:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=827, Unknown=4, NotChecked=244, Total=1190 [2022-09-16 11:57:41,146 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 186 [2022-09-16 11:57:41,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 188 transitions, 650 flow. Second operand has 35 states, 35 states have (on average 114.14285714285714) internal successors, (3995), 35 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:41,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:41,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 186 [2022-09-16 11:57:41,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:48,712 INFO L130 PetriNetUnfolder]: 24730/46518 cut-off events. [2022-09-16 11:57:48,713 INFO L131 PetriNetUnfolder]: For 10500/10708 co-relation queries the response was YES. [2022-09-16 11:57:48,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90364 conditions, 46518 events. 24730/46518 cut-off events. For 10500/10708 co-relation queries the response was YES. Maximal size of possible extension queue 1443. Compared 446173 event pairs, 10130 based on Foata normal form. 3/23991 useless extension candidates. Maximal degree in co-relation 89685. Up to 23910 conditions per place. [2022-09-16 11:57:49,142 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 107 selfloop transitions, 36 changer transitions 0/240 dead transitions. [2022-09-16 11:57:49,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 240 transitions, 1087 flow [2022-09-16 11:57:49,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:57:49,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:57:49,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2147 transitions. [2022-09-16 11:57:49,146 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6412783751493429 [2022-09-16 11:57:49,146 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2147 transitions. [2022-09-16 11:57:49,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2147 transitions. [2022-09-16 11:57:49,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:49,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2147 transitions. [2022-09-16 11:57:49,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 119.27777777777777) internal successors, (2147), 18 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:49,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:49,154 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:49,154 INFO L175 Difference]: Start difference. First operand has 210 places, 188 transitions, 650 flow. Second operand 18 states and 2147 transitions. [2022-09-16 11:57:49,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 240 transitions, 1087 flow [2022-09-16 11:57:49,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 240 transitions, 1076 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-09-16 11:57:49,168 INFO L231 Difference]: Finished difference. Result has 223 places, 194 transitions, 760 flow [2022-09-16 11:57:49,168 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=635, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=760, PETRI_PLACES=223, PETRI_TRANSITIONS=194} [2022-09-16 11:57:49,169 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 62 predicate places. [2022-09-16 11:57:49,169 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 194 transitions, 760 flow [2022-09-16 11:57:49,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 114.14285714285714) internal successors, (3995), 35 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:49,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:49,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:49,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:57:49,384 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 [2022-09-16 11:57:49,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:49,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:49,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1164477165, now seen corresponding path program 1 times [2022-09-16 11:57:49,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:49,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432870459] [2022-09-16 11:57:49,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:49,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:57:49,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:49,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432870459] [2022-09-16 11:57:49,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432870459] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:49,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:49,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:57:49,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087884160] [2022-09-16 11:57:49,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:49,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:57:49,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:49,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:57:49,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:57:49,429 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 186 [2022-09-16 11:57:49,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 194 transitions, 760 flow. Second operand has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 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) [2022-09-16 11:57:49,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:49,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 186 [2022-09-16 11:57:49,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:54,111 INFO L130 PetriNetUnfolder]: 18100/33664 cut-off events. [2022-09-16 11:57:54,111 INFO L131 PetriNetUnfolder]: For 10317/11951 co-relation queries the response was YES. [2022-09-16 11:57:54,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71313 conditions, 33664 events. 18100/33664 cut-off events. For 10317/11951 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 313189 event pairs, 8753 based on Foata normal form. 37/16527 useless extension candidates. Maximal degree in co-relation 70923. Up to 15789 conditions per place. [2022-09-16 11:57:54,398 INFO L137 encePairwiseOnDemand]: 180/186 looper letters, 82 selfloop transitions, 8 changer transitions 0/242 dead transitions. [2022-09-16 11:57:54,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 242 transitions, 1067 flow [2022-09-16 11:57:54,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:57:54,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:57:54,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 780 transitions. [2022-09-16 11:57:54,400 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8387096774193549 [2022-09-16 11:57:54,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 780 transitions. [2022-09-16 11:57:54,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 780 transitions. [2022-09-16 11:57:54,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:54,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 780 transitions. [2022-09-16 11:57:54,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:54,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:54,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 186.0) internal successors, (1116), 6 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:54,404 INFO L175 Difference]: Start difference. First operand has 223 places, 194 transitions, 760 flow. Second operand 5 states and 780 transitions. [2022-09-16 11:57:54,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 242 transitions, 1067 flow [2022-09-16 11:57:54,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 242 transitions, 1031 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-09-16 11:57:54,432 INFO L231 Difference]: Finished difference. Result has 216 places, 198 transitions, 783 flow [2022-09-16 11:57:54,432 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=726, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=783, PETRI_PLACES=216, PETRI_TRANSITIONS=198} [2022-09-16 11:57:54,433 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 55 predicate places. [2022-09-16 11:57:54,433 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 198 transitions, 783 flow [2022-09-16 11:57:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.5) internal successors, (566), 4 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) [2022-09-16 11:57:54,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:57:54,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:57:54,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:57:54,434 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:57:54,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:57:54,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1644600738, now seen corresponding path program 1 times [2022-09-16 11:57:54,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:57:54,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549858204] [2022-09-16 11:57:54,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:57:54,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:57:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:57:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:57:54,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:57:54,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549858204] [2022-09-16 11:57:54,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549858204] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:57:54,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:57:54,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:57:54,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52397024] [2022-09-16 11:57:54,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:57:54,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:57:54,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:57:54,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:57:54,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:57:54,564 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-09-16 11:57:54,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 198 transitions, 783 flow. Second operand has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:54,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:57:54,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-09-16 11:57:54,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:57:59,650 INFO L130 PetriNetUnfolder]: 17683/35397 cut-off events. [2022-09-16 11:57:59,650 INFO L131 PetriNetUnfolder]: For 24055/26502 co-relation queries the response was YES. [2022-09-16 11:57:59,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79666 conditions, 35397 events. 17683/35397 cut-off events. For 24055/26502 co-relation queries the response was YES. Maximal size of possible extension queue 1100. Compared 343477 event pairs, 11829 based on Foata normal form. 30/21206 useless extension candidates. Maximal degree in co-relation 79330. Up to 24104 conditions per place. [2022-09-16 11:57:59,987 INFO L137 encePairwiseOnDemand]: 173/186 looper letters, 82 selfloop transitions, 7 changer transitions 22/230 dead transitions. [2022-09-16 11:57:59,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 230 transitions, 1120 flow [2022-09-16 11:57:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:57:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-16 11:57:59,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1378 transitions. [2022-09-16 11:57:59,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6173835125448028 [2022-09-16 11:57:59,990 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1378 transitions. [2022-09-16 11:57:59,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1378 transitions. [2022-09-16 11:57:59,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:57:59,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1378 transitions. [2022-09-16 11:57:59,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.83333333333333) internal successors, (1378), 12 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:59,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 186.0) internal successors, (2418), 13 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:59,995 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 186.0) internal successors, (2418), 13 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:57:59,995 INFO L175 Difference]: Start difference. First operand has 216 places, 198 transitions, 783 flow. Second operand 12 states and 1378 transitions. [2022-09-16 11:57:59,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 230 transitions, 1120 flow [2022-09-16 11:58:00,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 230 transitions, 1116 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:00,013 INFO L231 Difference]: Finished difference. Result has 228 places, 191 transitions, 753 flow [2022-09-16 11:58:00,013 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=779, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=753, PETRI_PLACES=228, PETRI_TRANSITIONS=191} [2022-09-16 11:58:00,014 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 67 predicate places. [2022-09-16 11:58:00,014 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 191 transitions, 753 flow [2022-09-16 11:58:00,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 109.8) internal successors, (1098), 10 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:00,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:00,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:00,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:58:00,015 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:58:00,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:00,015 INFO L85 PathProgramCache]: Analyzing trace with hash 326529593, now seen corresponding path program 1 times [2022-09-16 11:58:00,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:00,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612232900] [2022-09-16 11:58:00,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:00,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:00,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:00,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:00,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612232900] [2022-09-16 11:58:00,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612232900] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:00,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858334233] [2022-09-16 11:58:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:00,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:00,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:00,254 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) [2022-09-16 11:58:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:58:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:00,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:58:00,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:00,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:58:00,401 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:58:00,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-16 11:58:00,504 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:58:00,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2022-09-16 11:58:00,588 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:58:00,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:58:00,721 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:58:00,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:58:00,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:00,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:00,824 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_206 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_206) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 4294967295)) is different from false [2022-09-16 11:58:00,840 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_206 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_206) c_~A~0.base) c_~A~0.offset) 4294967295)) is different from false [2022-09-16 11:58:00,845 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_206 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_205) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_206) c_~A~0.base) c_~A~0.offset) 4294967295)) is different from false [2022-09-16 11:58:00,867 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_206 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_205) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_206) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 4294967295)) is different from false [2022-09-16 11:58:01,142 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_206 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_205) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_206) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 4294967295)) is different from false [2022-09-16 11:58:01,145 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_205 (Array Int Int)) (v_ArrVal_206 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_205) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_206) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967295)) is different from false [2022-09-16 11:58:01,182 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:01,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-09-16 11:58:01,188 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:01,188 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 64 treesize of output 62 [2022-09-16 11:58:01,192 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 44 [2022-09-16 11:58:01,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2022-09-16 11:58:01,602 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-09-16 11:58:01,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:58:01,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858334233] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:01,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:01,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 41 [2022-09-16 11:58:01,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642521259] [2022-09-16 11:58:01,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-16 11:58:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-16 11:58:01,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1137, Unknown=6, NotChecked=438, Total=1722 [2022-09-16 11:58:01,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 186 [2022-09-16 11:58:01,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 191 transitions, 753 flow. Second operand has 42 states, 42 states have (on average 108.02380952380952) internal successors, (4537), 42 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:01,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:01,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 186 [2022-09-16 11:58:01,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:09,213 INFO L130 PetriNetUnfolder]: 25081/45812 cut-off events. [2022-09-16 11:58:09,214 INFO L131 PetriNetUnfolder]: For 33312/47582 co-relation queries the response was YES. [2022-09-16 11:58:09,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103165 conditions, 45812 events. 25081/45812 cut-off events. For 33312/47582 co-relation queries the response was YES. Maximal size of possible extension queue 1435. Compared 431837 event pairs, 9641 based on Foata normal form. 56/25573 useless extension candidates. Maximal degree in co-relation 103026. Up to 24649 conditions per place. [2022-09-16 11:58:09,722 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 115 selfloop transitions, 50 changer transitions 0/256 dead transitions. [2022-09-16 11:58:09,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 256 transitions, 1364 flow [2022-09-16 11:58:09,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:09,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:09,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2041 transitions. [2022-09-16 11:58:09,724 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6096176821983273 [2022-09-16 11:58:09,725 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2041 transitions. [2022-09-16 11:58:09,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2041 transitions. [2022-09-16 11:58:09,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:09,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2041 transitions. [2022-09-16 11:58:09,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 113.38888888888889) internal successors, (2041), 18 states have internal predecessors, (2041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:09,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:09,731 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:09,731 INFO L175 Difference]: Start difference. First operand has 228 places, 191 transitions, 753 flow. Second operand 18 states and 2041 transitions. [2022-09-16 11:58:09,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 256 transitions, 1364 flow [2022-09-16 11:58:09,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 256 transitions, 1325 flow, removed 12 selfloop flow, removed 15 redundant places. [2022-09-16 11:58:10,001 INFO L231 Difference]: Finished difference. Result has 222 places, 210 transitions, 1054 flow [2022-09-16 11:58:10,001 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1054, PETRI_PLACES=222, PETRI_TRANSITIONS=210} [2022-09-16 11:58:10,001 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 61 predicate places. [2022-09-16 11:58:10,002 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 210 transitions, 1054 flow [2022-09-16 11:58:10,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 108.02380952380952) internal successors, (4537), 42 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:10,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:10,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:10,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:58:10,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-16 11:58:10,220 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:58:10,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:10,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1690395146, now seen corresponding path program 1 times [2022-09-16 11:58:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:10,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044030331] [2022-09-16 11:58:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:10,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:10,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:10,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044030331] [2022-09-16 11:58:10,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044030331] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:10,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716878836] [2022-09-16 11:58:10,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:10,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:10,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:10,527 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) [2022-09-16 11:58:10,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:58:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:58:10,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:10,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:58:10,672 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:58:10,673 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-16 11:58:10,798 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:58:10,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2022-09-16 11:58:10,893 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:58:11,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:58:11,103 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:58:11,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:58:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:11,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:11,210 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_240) c_~A~0.base) (+ (* |c_thread1Thread1of1ForFork1_~i~0#1| 4) c_~A~0.offset)) 9223372039002259456))) is different from false [2022-09-16 11:58:11,222 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_240) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:58:11,227 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_239 (Array Int Int)) (v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_239) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_240) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:58:11,251 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_239 (Array Int Int)) (v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_239) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_240) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:11,257 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_239 (Array Int Int)) (v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_239) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_240) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:11,263 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_239 (Array Int Int)) (v_ArrVal_240 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_239) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_240) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:11,283 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:11,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-09-16 11:58:11,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:11,290 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 142 treesize of output 136 [2022-09-16 11:58:11,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 122 treesize of output 114 [2022-09-16 11:58:11,298 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 114 treesize of output 110 [2022-09-16 11:58:11,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-09-16 11:58:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:58:11,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716878836] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:11,648 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:11,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 41 [2022-09-16 11:58:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411490175] [2022-09-16 11:58:11,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:11,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-16 11:58:11,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:11,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-16 11:58:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1137, Unknown=6, NotChecked=438, Total=1722 [2022-09-16 11:58:11,652 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 186 [2022-09-16 11:58:11,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 210 transitions, 1054 flow. Second operand has 42 states, 42 states have (on average 108.02380952380952) internal successors, (4537), 42 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:11,654 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:11,654 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 186 [2022-09-16 11:58:11,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:20,281 INFO L130 PetriNetUnfolder]: 28834/54554 cut-off events. [2022-09-16 11:58:20,281 INFO L131 PetriNetUnfolder]: For 55307/77006 co-relation queries the response was YES. [2022-09-16 11:58:20,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121157 conditions, 54554 events. 28834/54554 cut-off events. For 55307/77006 co-relation queries the response was YES. Maximal size of possible extension queue 1598. Compared 531959 event pairs, 9605 based on Foata normal form. 61/28417 useless extension candidates. Maximal degree in co-relation 121020. Up to 27373 conditions per place. [2022-09-16 11:58:20,801 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 114 selfloop transitions, 51 changer transitions 0/256 dead transitions. [2022-09-16 11:58:20,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 256 transitions, 1507 flow [2022-09-16 11:58:20,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:58:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:58:20,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2040 transitions. [2022-09-16 11:58:20,803 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6093189964157706 [2022-09-16 11:58:20,803 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2040 transitions. [2022-09-16 11:58:20,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2040 transitions. [2022-09-16 11:58:20,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:20,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2040 transitions. [2022-09-16 11:58:20,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 113.33333333333333) internal successors, (2040), 18 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:20,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:20,809 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:20,809 INFO L175 Difference]: Start difference. First operand has 222 places, 210 transitions, 1054 flow. Second operand 18 states and 2040 transitions. [2022-09-16 11:58:20,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 256 transitions, 1507 flow [2022-09-16 11:58:20,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 256 transitions, 1474 flow, removed 4 selfloop flow, removed 12 redundant places. [2022-09-16 11:58:20,908 INFO L231 Difference]: Finished difference. Result has 227 places, 211 transitions, 1133 flow [2022-09-16 11:58:20,908 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1005, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1133, PETRI_PLACES=227, PETRI_TRANSITIONS=211} [2022-09-16 11:58:20,908 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 66 predicate places. [2022-09-16 11:58:20,909 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 211 transitions, 1133 flow [2022-09-16 11:58:20,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 108.02380952380952) internal successors, (4537), 42 states have internal predecessors, (4537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:20,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:20,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:20,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-16 11:58:21,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:21,123 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:58:21,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:21,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1072373216, now seen corresponding path program 1 times [2022-09-16 11:58:21,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:21,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399165100] [2022-09-16 11:58:21,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:21,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:58:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399165100] [2022-09-16 11:58:21,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399165100] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:58:21,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:58:21,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:58:21,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287634563] [2022-09-16 11:58:21,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:58:21,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:58:21,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:21,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:58:21,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:58:21,186 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 186 [2022-09-16 11:58:21,186 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 211 transitions, 1133 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:21,186 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:21,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 186 [2022-09-16 11:58:21,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:24,505 INFO L130 PetriNetUnfolder]: 10159/23157 cut-off events. [2022-09-16 11:58:24,505 INFO L131 PetriNetUnfolder]: For 36848/37919 co-relation queries the response was YES. [2022-09-16 11:58:24,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57807 conditions, 23157 events. 10159/23157 cut-off events. For 36848/37919 co-relation queries the response was YES. Maximal size of possible extension queue 1111. Compared 248525 event pairs, 2711 based on Foata normal form. 18/12291 useless extension candidates. Maximal degree in co-relation 57691. Up to 11665 conditions per place. [2022-09-16 11:58:24,683 INFO L137 encePairwiseOnDemand]: 179/186 looper letters, 52 selfloop transitions, 3 changer transitions 0/232 dead transitions. [2022-09-16 11:58:24,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 1430 flow [2022-09-16 11:58:24,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:58:24,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:58:24,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2022-09-16 11:58:24,684 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-09-16 11:58:24,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2022-09-16 11:58:24,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2022-09-16 11:58:24,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:24,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2022-09-16 11:58:24,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,685 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,685 INFO L175 Difference]: Start difference. First operand has 227 places, 211 transitions, 1133 flow. Second operand 3 states and 483 transitions. [2022-09-16 11:58:24,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 1430 flow [2022-09-16 11:58:24,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 232 transitions, 1384 flow, removed 7 selfloop flow, removed 13 redundant places. [2022-09-16 11:58:24,722 INFO L231 Difference]: Finished difference. Result has 217 places, 213 transitions, 1114 flow [2022-09-16 11:58:24,723 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1089, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1114, PETRI_PLACES=217, PETRI_TRANSITIONS=213} [2022-09-16 11:58:24,724 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 56 predicate places. [2022-09-16 11:58:24,724 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 213 transitions, 1114 flow [2022-09-16 11:58:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:24,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:24,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:24,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-09-16 11:58:24,725 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:58:24,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:24,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1072373215, now seen corresponding path program 1 times [2022-09-16 11:58:24,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:24,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631136617] [2022-09-16 11:58:24,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:24,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:24,980 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:24,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:24,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631136617] [2022-09-16 11:58:24,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631136617] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:24,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308343867] [2022-09-16 11:58:24,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:24,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:24,992 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) [2022-09-16 11:58:24,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:58:25,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:25,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 38 conjunts are in the unsatisfiable core [2022-09-16 11:58:25,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:25,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:58:25,115 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-09-16 11:58:25,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-09-16 11:58:25,146 INFO L356 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-09-16 11:58:25,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2022-09-16 11:58:25,395 INFO L356 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-09-16 11:58:25,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 43 [2022-09-16 11:58:25,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:58:25,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:58:25,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:58:25,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:25,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:25,709 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_289 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_289) c_~A~0.base) c_~A~0.offset) 4294967295)) is different from false [2022-09-16 11:58:25,719 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_289 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_288) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_289) c_~A~0.base) c_~A~0.offset) 4294967295)) is different from false [2022-09-16 11:58:25,737 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_289 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_288) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_289) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 4294967295)) is different from false [2022-09-16 11:58:25,741 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_289 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_288) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_289) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 4294967295)) is different from false [2022-09-16 11:58:25,744 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_289 (Array Int Int)) (v_ArrVal_288 (Array Int Int))) (<= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_288) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_289) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 4294967295)) is different from false [2022-09-16 11:58:25,760 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:25,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 26 [2022-09-16 11:58:25,766 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:25,766 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 126 treesize of output 120 [2022-09-16 11:58:25,769 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 53 treesize of output 49 [2022-09-16 11:58:25,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 102 treesize of output 94 [2022-09-16 11:58:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:58:26,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308343867] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:26,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:26,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 40 [2022-09-16 11:58:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123274304] [2022-09-16 11:58:26,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:26,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-09-16 11:58:26,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-09-16 11:58:26,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1130, Unknown=5, NotChecked=360, Total=1640 [2022-09-16 11:58:26,101 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 186 [2022-09-16 11:58:26,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 213 transitions, 1114 flow. Second operand has 41 states, 41 states have (on average 108.07317073170732) internal successors, (4431), 41 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:26,104 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:26,104 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 186 [2022-09-16 11:58:26,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:58:41,736 INFO L130 PetriNetUnfolder]: 48406/98545 cut-off events. [2022-09-16 11:58:41,737 INFO L131 PetriNetUnfolder]: For 167592/172639 co-relation queries the response was YES. [2022-09-16 11:58:42,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269278 conditions, 98545 events. 48406/98545 cut-off events. For 167592/172639 co-relation queries the response was YES. Maximal size of possible extension queue 3467. Compared 1145632 event pairs, 18819 based on Foata normal form. 127/64827 useless extension candidates. Maximal degree in co-relation 269147. Up to 45895 conditions per place. [2022-09-16 11:58:43,113 INFO L137 encePairwiseOnDemand]: 164/186 looper letters, 126 selfloop transitions, 60 changer transitions 0/289 dead transitions. [2022-09-16 11:58:43,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 289 transitions, 2079 flow [2022-09-16 11:58:43,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:58:43,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-09-16 11:58:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2251 transitions. [2022-09-16 11:58:43,115 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6051075268817204 [2022-09-16 11:58:43,116 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2251 transitions. [2022-09-16 11:58:43,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2251 transitions. [2022-09-16 11:58:43,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:58:43,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2251 transitions. [2022-09-16 11:58:43,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 112.55) internal successors, (2251), 20 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:43,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:43,146 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:43,146 INFO L175 Difference]: Start difference. First operand has 217 places, 213 transitions, 1114 flow. Second operand 20 states and 2251 transitions. [2022-09-16 11:58:43,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 289 transitions, 2079 flow [2022-09-16 11:58:43,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 289 transitions, 2074 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:58:43,287 INFO L231 Difference]: Finished difference. Result has 239 places, 245 transitions, 1602 flow [2022-09-16 11:58:43,287 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1111, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1602, PETRI_PLACES=239, PETRI_TRANSITIONS=245} [2022-09-16 11:58:43,288 INFO L287 CegarLoopForPetriNet]: 161 programPoint places, 78 predicate places. [2022-09-16 11:58:43,288 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 245 transitions, 1602 flow [2022-09-16 11:58:43,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 108.07317073170732) internal successors, (4431), 41 states have internal predecessors, (4431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:43,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:58:43,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:58:43,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-09-16 11:58:43,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:43,500 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-09-16 11:58:43,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:58:43,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1072373212, now seen corresponding path program 1 times [2022-09-16 11:58:43,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:58:43,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112672330] [2022-09-16 11:58:43,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:43,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:58:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:43,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:43,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:58:43,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112672330] [2022-09-16 11:58:43,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112672330] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:58:43,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869803422] [2022-09-16 11:58:43,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:58:43,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:58:43,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:58:43,780 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) [2022-09-16 11:58:43,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:58:43,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:58:43,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:58:43,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:58:43,903 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:58:43,924 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:58:43,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-16 11:58:44,037 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:58:44,037 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 15 [2022-09-16 11:58:44,116 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:58:44,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:58:44,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:58:44,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-09-16 11:58:44,530 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:58:44,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:58:44,572 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_323 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_323) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:58:44,583 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_322) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_323) c_~A~0.base) c_~A~0.offset) 9223372039002259456))) is different from false [2022-09-16 11:58:44,606 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_322) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_323) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:44,611 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_322) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_323) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:44,615 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_322 (Array Int Int)) (v_ArrVal_323 (Array Int Int))) (< 0 (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_322) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_323) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 9223372039002259456))) is different from false [2022-09-16 11:58:44,631 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:44,632 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-09-16 11:58:44,637 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:58:44,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 72 treesize of output 70 [2022-09-16 11:58:44,642 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 28 treesize of output 26 [2022-09-16 11:58:44,645 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 54 treesize of output 50 [2022-09-16 11:58:45,024 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 10 treesize of output 8 [2022-09-16 11:58:45,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:58:45,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869803422] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:58:45,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:58:45,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 41 [2022-09-16 11:58:45,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387235684] [2022-09-16 11:58:45,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:58:45,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-16 11:58:45,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:58:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-16 11:58:45,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1197, Unknown=5, NotChecked=370, Total=1722 [2022-09-16 11:58:45,048 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 186 [2022-09-16 11:58:45,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 245 transitions, 1602 flow. Second operand has 42 states, 42 states have (on average 108.0952380952381) internal successors, (4540), 42 states have internal predecessors, (4540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:58:45,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:58:45,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 186 [2022-09-16 11:58:45,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand