/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-FA-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-prod-cons3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:11:26,862 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:11:26,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:11:26,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:11:26,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:11:26,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:11:26,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:11:26,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:11:26,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:11:26,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:11:26,921 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:11:26,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:11:26,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:11:26,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:11:26,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:11:26,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:11:26,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:11:26,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:11:26,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:11:26,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:11:26,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:11:26,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:11:26,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:11:26,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:11:26,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:11:26,945 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:11:26,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:11:26,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:11:26,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:11:26,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:11:26,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:11:26,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:11:26,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:11:26,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:11:26,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:11:26,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:11:26,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:11:26,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:11:26,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:11:26,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:11:26,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:11:26,955 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-FA-NoLbe.epf [2022-09-16 11:11:26,987 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:11:26,988 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:11:26,988 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:11:26,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:11:26,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:11:26,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:11:26,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:11:26,990 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:11:26,990 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:11:26,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:11:26,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:11:26,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:11:26,991 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:11:26,991 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:11:26,991 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:11:26,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:11:26,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:11:26,992 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:11:26,992 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:11:26,992 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:11:26,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:11:26,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:11:26,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:11:26,994 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:11:26,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:11:26,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:11:26,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:11:26,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:11:26,994 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:11:26,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:11:26,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:11:26,995 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:11:26,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:11:26,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:11:27,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:11:27,241 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:11:27,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:11:27,244 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:11:27,245 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:11:27,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2022-09-16 11:11:27,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2e8cbce/9d1f1511c3654d80803383ff204b0552/FLAGbd7d40ed0 [2022-09-16 11:11:27,644 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:11:27,644 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-prod-cons3.wvr.c [2022-09-16 11:11:27,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2e8cbce/9d1f1511c3654d80803383ff204b0552/FLAGbd7d40ed0 [2022-09-16 11:11:28,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf2e8cbce/9d1f1511c3654d80803383ff204b0552 [2022-09-16 11:11:28,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:11:28,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:11:28,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:11:28,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:11:28,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:11:28,067 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54412e27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28, skipping insertion in model container [2022-09-16 11:11:28,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:11:28,110 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:11:28,277 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-prod-cons3.wvr.c[4007,4020] [2022-09-16 11:11:28,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:11:28,295 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:11:28,339 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-prod-cons3.wvr.c[4007,4020] [2022-09-16 11:11:28,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:11:28,369 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:11:28,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28 WrapperNode [2022-09-16 11:11:28,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:11:28,370 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:11:28,370 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:11:28,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:11:28,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,385 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,414 INFO L138 Inliner]: procedures = 26, calls = 73, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 287 [2022-09-16 11:11:28,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:11:28,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:11:28,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:11:28,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:11:28,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:11:28,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:11:28,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:11:28,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:11:28,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (1/1) ... [2022-09-16 11:11:28,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:11:28,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:28,476 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 11:11:28,483 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 11:11:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:11:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:11:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:11:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:11:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:11:28,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:11:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:11:28,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:11:28,514 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:11:28,514 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:11:28,515 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:11:28,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:11:28,515 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:11:28,517 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 11:11:28,615 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:11:28,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:11:28,965 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:11:29,116 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:11:29,117 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:11:29,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:11:29 BoogieIcfgContainer [2022-09-16 11:11:29,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:11:29,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:11:29,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:11:29,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:11:29,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:11:28" (1/3) ... [2022-09-16 11:11:29,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e1eefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:11:29, skipping insertion in model container [2022-09-16 11:11:29,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:28" (2/3) ... [2022-09-16 11:11:29,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11e1eefc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:11:29, skipping insertion in model container [2022-09-16 11:11:29,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:11:29" (3/3) ... [2022-09-16 11:11:29,129 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons3.wvr.c [2022-09-16 11:11:29,136 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:11:29,143 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:11:29,143 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2022-09-16 11:11:29,143 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:11:29,228 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:11:29,275 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 261 places, 266 transitions, 564 flow [2022-09-16 11:11:33,533 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 125443 states, 124765 states have (on average 4.681256762713902) internal successors, (584057), 125442 states have internal predecessors, (584057), 0 states have call successors, (0), 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 11:11:33,561 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:11:33,567 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, 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;@5b686193, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:11:33,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-09-16 11:11:33,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 125443 states, 124765 states have (on average 4.681256762713902) internal successors, (584057), 125442 states have internal predecessors, (584057), 0 states have call successors, (0), 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 11:11:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-09-16 11:11:33,816 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:33,816 INFO L195 NwaCegarLoop]: 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] [2022-09-16 11:11:33,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:11:33,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:33,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1561727479, now seen corresponding path program 1 times [2022-09-16 11:11:33,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:33,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904796893] [2022-09-16 11:11:33,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:33,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:34,115 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 11:11:34,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:34,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904796893] [2022-09-16 11:11:34,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904796893] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:34,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:11:34,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:11:34,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004123478] [2022-09-16 11:11:34,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:34,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:11:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:34,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:11:34,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:11:34,476 INFO L87 Difference]: Start difference. First operand has 125443 states, 124765 states have (on average 4.681256762713902) internal successors, (584057), 125442 states have internal predecessors, (584057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 11:11:38,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:38,296 INFO L93 Difference]: Finished difference Result 194267 states and 868455 transitions. [2022-09-16 11:11:38,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:11:38,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2022-09-16 11:11:38,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:40,833 INFO L225 Difference]: With dead ends: 194267 [2022-09-16 11:11:40,833 INFO L226 Difference]: Without dead ends: 194260 [2022-09-16 11:11:40,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:11:40,838 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 120 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:40,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 553 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:11:41,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194260 states. [2022-09-16 11:11:47,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194260 to 97191. [2022-09-16 11:11:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97191 states, 96852 states have (on average 4.484027175484244) internal successors, (434287), 97190 states have internal predecessors, (434287), 0 states have call successors, (0), 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 11:11:49,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97191 states to 97191 states and 434287 transitions. [2022-09-16 11:11:49,168 INFO L78 Accepts]: Start accepts. Automaton has 97191 states and 434287 transitions. Word has length 79 [2022-09-16 11:11:49,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:49,169 INFO L495 AbstractCegarLoop]: Abstraction has 97191 states and 434287 transitions. [2022-09-16 11:11:49,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 11:11:49,170 INFO L276 IsEmpty]: Start isEmpty. Operand 97191 states and 434287 transitions. [2022-09-16 11:11:49,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-09-16 11:11:49,172 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:49,172 INFO L195 NwaCegarLoop]: 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, 1, 1, 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 11:11:49,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:11:49,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:11:49,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash -433725144, now seen corresponding path program 1 times [2022-09-16 11:11:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:49,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950954693] [2022-09-16 11:11:49,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:49,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:49,312 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 11:11:49,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:49,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950954693] [2022-09-16 11:11:49,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950954693] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:49,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004130702] [2022-09-16 11:11:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:49,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:49,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:49,316 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 11:11:49,317 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 11:11:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:49,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:11:49,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:49,550 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 11:11:49,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:49,608 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 11:11:49,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004130702] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:49,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:49,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:11:49,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640467348] [2022-09-16 11:11:49,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:49,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:11:49,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:49,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:11:49,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:11:49,622 INFO L87 Difference]: Start difference. First operand 97191 states and 434287 transitions. Second operand has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 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 11:11:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:58,155 INFO L93 Difference]: Finished difference Result 485513 states and 2170983 transitions. [2022-09-16 11:11:58,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:11:58,159 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-09-16 11:11:58,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:04,325 INFO L225 Difference]: With dead ends: 485513 [2022-09-16 11:12:04,326 INFO L226 Difference]: Without dead ends: 485513 [2022-09-16 11:12:04,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:12:04,327 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 726 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 1481 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:12:05,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485513 states. [2022-09-16 11:12:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485513 to 97243. [2022-09-16 11:12:17,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97243 states, 96904 states have (on average 4.482260794188062) internal successors, (434349), 97242 states have internal predecessors, (434349), 0 states have call successors, (0), 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 11:12:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97243 states to 97243 states and 434349 transitions. [2022-09-16 11:12:18,838 INFO L78 Accepts]: Start accepts. Automaton has 97243 states and 434349 transitions. Word has length 88 [2022-09-16 11:12:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:18,839 INFO L495 AbstractCegarLoop]: Abstraction has 97243 states and 434349 transitions. [2022-09-16 11:12:18,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.272727272727273) internal successors, (113), 12 states have internal predecessors, (113), 0 states have call successors, (0), 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 11:12:18,839 INFO L276 IsEmpty]: Start isEmpty. Operand 97243 states and 434349 transitions. [2022-09-16 11:12:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:12:18,840 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:18,840 INFO L195 NwaCegarLoop]: 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, 1, 1, 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 11:12:18,857 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 11:12:19,042 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 11:12:19,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:12:19,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash -560576748, now seen corresponding path program 1 times [2022-09-16 11:12:19,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:19,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763234583] [2022-09-16 11:12:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:19,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:19,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:19,515 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 11:12:19,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:19,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763234583] [2022-09-16 11:12:19,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763234583] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:19,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256063958] [2022-09-16 11:12:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:19,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:19,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:19,524 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 11:12:19,531 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 11:12:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:19,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:12:19,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:19,680 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 11:12:19,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:19,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256063958] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:19,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:19,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:12:19,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813771882] [2022-09-16 11:12:19,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:19,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:12:19,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:19,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:12:19,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:12:19,682 INFO L87 Difference]: Start difference. First operand 97243 states and 434349 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 11:12:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:22,251 INFO L93 Difference]: Finished difference Result 194306 states and 868500 transitions. [2022-09-16 11:12:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:12:22,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-09-16 11:12:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:25,673 INFO L225 Difference]: With dead ends: 194306 [2022-09-16 11:12:25,674 INFO L226 Difference]: Without dead ends: 194306 [2022-09-16 11:12:25,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:12:25,675 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 244 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 949 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:25,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 949 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:12:26,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194306 states. [2022-09-16 11:12:32,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194306 to 97241. [2022-09-16 11:12:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97241 states, 96904 states have (on average 4.4821988772393295) internal successors, (434343), 97240 states have internal predecessors, (434343), 0 states have call successors, (0), 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 11:12:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97241 states to 97241 states and 434343 transitions. [2022-09-16 11:12:33,350 INFO L78 Accepts]: Start accepts. Automaton has 97241 states and 434343 transitions. Word has length 89 [2022-09-16 11:12:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:33,351 INFO L495 AbstractCegarLoop]: Abstraction has 97241 states and 434343 transitions. [2022-09-16 11:12:33,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 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 11:12:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 97241 states and 434343 transitions. [2022-09-16 11:12:33,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-09-16 11:12:33,353 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:33,353 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:33,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:33,553 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 11:12:33,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:12:33,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:33,554 INFO L85 PathProgramCache]: Analyzing trace with hash 816520137, now seen corresponding path program 2 times [2022-09-16 11:12:33,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:33,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145938007] [2022-09-16 11:12:33,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:33,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:33,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:33,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145938007] [2022-09-16 11:12:33,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145938007] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:33,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969446550] [2022-09-16 11:12:33,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:33,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:33,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:33,731 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 11:12:33,733 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 11:12:33,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:12:33,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:33,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:12:33,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:33,965 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:12:33,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:12:34,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969446550] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:34,115 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:34,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:12:34,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867540918] [2022-09-16 11:12:34,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:34,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:12:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:12:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:12:34,117 INFO L87 Difference]: Start difference. First operand 97241 states and 434343 transitions. Second operand has 18 states, 17 states have (on average 9.764705882352942) internal successors, (166), 18 states have internal predecessors, (166), 0 states have call successors, (0), 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 11:12:43,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:43,803 INFO L93 Difference]: Finished difference Result 598687 states and 2678037 transitions. [2022-09-16 11:12:43,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:12:43,803 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.764705882352942) internal successors, (166), 18 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-09-16 11:12:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:53,179 INFO L225 Difference]: With dead ends: 598687 [2022-09-16 11:12:53,184 INFO L226 Difference]: Without dead ends: 598687 [2022-09-16 11:12:53,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 219 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=991, Invalid=3041, Unknown=0, NotChecked=0, Total=4032 [2022-09-16 11:12:53,187 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 2817 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2817 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:53,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2817 Valid, 1658 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:12:54,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598687 states. [2022-09-16 11:13:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598687 to 85657. [2022-09-16 11:13:12,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85657 states, 85441 states have (on average 4.479266394353998) internal successors, (382713), 85656 states have internal predecessors, (382713), 0 states have call successors, (0), 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 11:13:13,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85657 states to 85657 states and 382713 transitions. [2022-09-16 11:13:13,754 INFO L78 Accepts]: Start accepts. Automaton has 85657 states and 382713 transitions. Word has length 115 [2022-09-16 11:13:13,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:13,755 INFO L495 AbstractCegarLoop]: Abstraction has 85657 states and 382713 transitions. [2022-09-16 11:13:13,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.764705882352942) internal successors, (166), 18 states have internal predecessors, (166), 0 states have call successors, (0), 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 11:13:13,755 INFO L276 IsEmpty]: Start isEmpty. Operand 85657 states and 382713 transitions. [2022-09-16 11:13:13,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-09-16 11:13:13,762 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:13,763 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:13,787 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 11:13:13,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:13,987 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:13,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:13,988 INFO L85 PathProgramCache]: Analyzing trace with hash 764063566, now seen corresponding path program 1 times [2022-09-16 11:13:13,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:13,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110636992] [2022-09-16 11:13:13,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:13,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:14,054 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 11:13:14,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:14,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110636992] [2022-09-16 11:13:14,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110636992] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:14,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:14,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:13:14,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892251175] [2022-09-16 11:13:14,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:14,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:13:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:14,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:13:14,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:13:14,056 INFO L87 Difference]: Start difference. First operand 85657 states and 382713 transitions. Second operand has 6 states, 5 states have (on average 24.6) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 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 11:13:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:15,140 INFO L93 Difference]: Finished difference Result 80161 states and 358311 transitions. [2022-09-16 11:13:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:13:15,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.6) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 123 [2022-09-16 11:13:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:15,653 INFO L225 Difference]: With dead ends: 80161 [2022-09-16 11:13:15,653 INFO L226 Difference]: Without dead ends: 80161 [2022-09-16 11:13:15,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:13:15,654 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 232 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:15,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 898 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:13:15,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80161 states. [2022-09-16 11:13:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80161 to 80161. [2022-09-16 11:13:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80161 states, 80017 states have (on average 4.477935938613045) internal successors, (358311), 80160 states have internal predecessors, (358311), 0 states have call successors, (0), 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 11:13:19,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80161 states to 80161 states and 358311 transitions. [2022-09-16 11:13:19,439 INFO L78 Accepts]: Start accepts. Automaton has 80161 states and 358311 transitions. Word has length 123 [2022-09-16 11:13:19,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:19,440 INFO L495 AbstractCegarLoop]: Abstraction has 80161 states and 358311 transitions. [2022-09-16 11:13:19,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.6) internal successors, (123), 6 states have internal predecessors, (123), 0 states have call successors, (0), 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 11:13:19,440 INFO L276 IsEmpty]: Start isEmpty. Operand 80161 states and 358311 transitions. [2022-09-16 11:13:19,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-09-16 11:13:19,441 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:19,442 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:13:19,442 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash -2083832375, now seen corresponding path program 1 times [2022-09-16 11:13:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:19,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869242856] [2022-09-16 11:13:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:19,553 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 11:13:19,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869242856] [2022-09-16 11:13:19,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869242856] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:19,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:19,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:13:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454536404] [2022-09-16 11:13:19,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:19,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:13:19,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:19,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:13:19,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:13:19,555 INFO L87 Difference]: Start difference. First operand 80161 states and 358311 transitions. Second operand has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 11:13:21,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:21,438 INFO L93 Difference]: Finished difference Result 94186 states and 412830 transitions. [2022-09-16 11:13:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:13:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-09-16 11:13:21,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:22,383 INFO L225 Difference]: With dead ends: 94186 [2022-09-16 11:13:22,383 INFO L226 Difference]: Without dead ends: 93106 [2022-09-16 11:13:22,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:13:22,387 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 175 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:22,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 715 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:13:23,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93106 states. [2022-09-16 11:13:25,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93106 to 73585. [2022-09-16 11:13:25,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73585 states, 73513 states have (on average 4.47239263803681) internal successors, (328779), 73584 states have internal predecessors, (328779), 0 states have call successors, (0), 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 11:13:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73585 states to 73585 states and 328779 transitions. [2022-09-16 11:13:26,633 INFO L78 Accepts]: Start accepts. Automaton has 73585 states and 328779 transitions. Word has length 124 [2022-09-16 11:13:26,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:26,633 INFO L495 AbstractCegarLoop]: Abstraction has 73585 states and 328779 transitions. [2022-09-16 11:13:26,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 41.333333333333336) internal successors, (124), 4 states have internal predecessors, (124), 0 states have call successors, (0), 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 11:13:26,633 INFO L276 IsEmpty]: Start isEmpty. Operand 73585 states and 328779 transitions. [2022-09-16 11:13:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-09-16 11:13:26,635 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:26,635 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:26,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:13:26,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1746474688, now seen corresponding path program 1 times [2022-09-16 11:13:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072562665] [2022-09-16 11:13:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:26,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:26,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:26,725 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 11:13:26,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:26,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072562665] [2022-09-16 11:13:26,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072562665] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:26,725 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:26,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:13:26,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212179291] [2022-09-16 11:13:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:26,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:13:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:13:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:13:26,731 INFO L87 Difference]: Start difference. First operand 73585 states and 328779 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 11:13:28,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:28,070 INFO L93 Difference]: Finished difference Result 89506 states and 397272 transitions. [2022-09-16 11:13:28,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:13:28,071 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2022-09-16 11:13:28,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:28,980 INFO L225 Difference]: With dead ends: 89506 [2022-09-16 11:13:28,980 INFO L226 Difference]: Without dead ends: 88966 [2022-09-16 11:13:28,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:13:28,981 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 71 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:28,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 291 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:13:29,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88966 states. [2022-09-16 11:13:31,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88966 to 81271. [2022-09-16 11:13:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81271 states, 81188 states have (on average 4.471436665517071) internal successors, (363027), 81270 states have internal predecessors, (363027), 0 states have call successors, (0), 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 11:13:32,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81271 states to 81271 states and 363027 transitions. [2022-09-16 11:13:32,137 INFO L78 Accepts]: Start accepts. Automaton has 81271 states and 363027 transitions. Word has length 127 [2022-09-16 11:13:32,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:32,139 INFO L495 AbstractCegarLoop]: Abstraction has 81271 states and 363027 transitions. [2022-09-16 11:13:32,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 11:13:32,139 INFO L276 IsEmpty]: Start isEmpty. Operand 81271 states and 363027 transitions. [2022-09-16 11:13:32,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-09-16 11:13:32,142 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:32,142 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:32,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:13:32,142 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:32,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:32,143 INFO L85 PathProgramCache]: Analyzing trace with hash 672254956, now seen corresponding path program 1 times [2022-09-16 11:13:32,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:32,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353628598] [2022-09-16 11:13:32,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:32,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:32,748 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 11:13:32,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:32,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353628598] [2022-09-16 11:13:32,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353628598] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:32,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:32,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-16 11:13:32,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516717197] [2022-09-16 11:13:32,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:32,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:13:32,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:32,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:13:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:13:32,750 INFO L87 Difference]: Start difference. First operand 81271 states and 363027 transitions. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 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 11:13:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:33,993 INFO L93 Difference]: Finished difference Result 102150 states and 450574 transitions. [2022-09-16 11:13:33,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:13:33,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-09-16 11:13:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:34,639 INFO L225 Difference]: With dead ends: 102150 [2022-09-16 11:13:34,639 INFO L226 Difference]: Without dead ends: 101430 [2022-09-16 11:13:34,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:13:34,640 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 179 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:34,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 659 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:13:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101430 states. [2022-09-16 11:13:37,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101430 to 92953. [2022-09-16 11:13:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92953 states, 92848 states have (on average 4.467398328450801) internal successors, (414789), 92952 states have internal predecessors, (414789), 0 states have call successors, (0), 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 11:13:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92953 states to 92953 states and 414789 transitions. [2022-09-16 11:13:39,352 INFO L78 Accepts]: Start accepts. Automaton has 92953 states and 414789 transitions. Word has length 132 [2022-09-16 11:13:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:39,352 INFO L495 AbstractCegarLoop]: Abstraction has 92953 states and 414789 transitions. [2022-09-16 11:13:39,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 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 11:13:39,353 INFO L276 IsEmpty]: Start isEmpty. Operand 92953 states and 414789 transitions. [2022-09-16 11:13:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-09-16 11:13:39,357 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:39,357 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:39,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:13:39,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:39,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 26056919, now seen corresponding path program 1 times [2022-09-16 11:13:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:39,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420207480] [2022-09-16 11:13:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:39,488 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 11:13:39,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:39,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420207480] [2022-09-16 11:13:39,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420207480] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:39,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:39,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:13:39,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396734347] [2022-09-16 11:13:39,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:39,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:13:39,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:39,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:13:39,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:13:39,503 INFO L87 Difference]: Start difference. First operand 92953 states and 414789 transitions. Second operand has 3 states, 2 states have (on average 66.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 11:13:41,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:41,251 INFO L93 Difference]: Finished difference Result 101506 states and 445583 transitions. [2022-09-16 11:13:41,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:13:41,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 66.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 132 [2022-09-16 11:13:41,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:42,321 INFO L225 Difference]: With dead ends: 101506 [2022-09-16 11:13:42,321 INFO L226 Difference]: Without dead ends: 97090 [2022-09-16 11:13:42,321 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:13:42,330 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 69 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:42,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 285 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:13:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97090 states. [2022-09-16 11:13:45,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97090 to 88225. [2022-09-16 11:13:46,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88225 states, 88130 states have (on average 4.41056393963463) internal successors, (388703), 88224 states have internal predecessors, (388703), 0 states have call successors, (0), 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 11:13:46,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88225 states to 88225 states and 388703 transitions. [2022-09-16 11:13:46,936 INFO L78 Accepts]: Start accepts. Automaton has 88225 states and 388703 transitions. Word has length 132 [2022-09-16 11:13:46,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:46,936 INFO L495 AbstractCegarLoop]: Abstraction has 88225 states and 388703 transitions. [2022-09-16 11:13:46,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 66.0) internal successors, (132), 3 states have internal predecessors, (132), 0 states have call successors, (0), 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 11:13:46,936 INFO L276 IsEmpty]: Start isEmpty. Operand 88225 states and 388703 transitions. [2022-09-16 11:13:46,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-09-16 11:13:46,941 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:46,941 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:46,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:13:46,941 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:46,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1339897708, now seen corresponding path program 1 times [2022-09-16 11:13:46,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:46,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831878970] [2022-09-16 11:13:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:46,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:47,047 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 11:13:47,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:47,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831878970] [2022-09-16 11:13:47,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831878970] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:47,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:47,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:13:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562900986] [2022-09-16 11:13:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:47,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:13:47,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:13:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:13:47,049 INFO L87 Difference]: Start difference. First operand 88225 states and 388703 transitions. Second operand has 5 states, 4 states have (on average 33.75) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 11:13:48,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:48,048 INFO L93 Difference]: Finished difference Result 75624 states and 328897 transitions. [2022-09-16 11:13:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:13:48,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 33.75) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-09-16 11:13:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:48,840 INFO L225 Difference]: With dead ends: 75624 [2022-09-16 11:13:48,841 INFO L226 Difference]: Without dead ends: 75624 [2022-09-16 11:13:48,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:13:48,841 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 371 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:48,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 225 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:13:48,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75624 states. [2022-09-16 11:13:50,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75624 to 75624. [2022-09-16 11:13:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75624 states, 75563 states have (on average 4.352619668356206) internal successors, (328897), 75623 states have internal predecessors, (328897), 0 states have call successors, (0), 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 11:13:51,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75624 states to 75624 states and 328897 transitions. [2022-09-16 11:13:51,639 INFO L78 Accepts]: Start accepts. Automaton has 75624 states and 328897 transitions. Word has length 135 [2022-09-16 11:13:51,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:51,640 INFO L495 AbstractCegarLoop]: Abstraction has 75624 states and 328897 transitions. [2022-09-16 11:13:51,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 33.75) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 11:13:51,640 INFO L276 IsEmpty]: Start isEmpty. Operand 75624 states and 328897 transitions. [2022-09-16 11:13:51,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-09-16 11:13:51,646 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:51,646 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:51,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-16 11:13:51,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:51,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:51,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1339897707, now seen corresponding path program 1 times [2022-09-16 11:13:51,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:51,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385457832] [2022-09-16 11:13:51,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:51,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:51,733 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 11:13:51,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:51,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385457832] [2022-09-16 11:13:51,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385457832] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:51,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:51,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:13:51,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446468687] [2022-09-16 11:13:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:51,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:13:51,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:51,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:13:51,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:13:51,735 INFO L87 Difference]: Start difference. First operand 75624 states and 328897 transitions. Second operand has 5 states, 4 states have (on average 33.75) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 11:13:52,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:52,673 INFO L93 Difference]: Finished difference Result 63023 states and 269091 transitions. [2022-09-16 11:13:52,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:13:52,674 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 33.75) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2022-09-16 11:13:52,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:52,979 INFO L225 Difference]: With dead ends: 63023 [2022-09-16 11:13:52,979 INFO L226 Difference]: Without dead ends: 56253 [2022-09-16 11:13:52,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:13:52,980 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 115 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:52,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 502 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:13:53,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56253 states. [2022-09-16 11:13:54,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56253 to 56253. [2022-09-16 11:13:54,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56253 states, 56226 states have (on average 4.321363781880269) internal successors, (242973), 56252 states have internal predecessors, (242973), 0 states have call successors, (0), 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 11:13:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56253 states to 56253 states and 242973 transitions. [2022-09-16 11:13:55,276 INFO L78 Accepts]: Start accepts. Automaton has 56253 states and 242973 transitions. Word has length 135 [2022-09-16 11:13:55,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:55,276 INFO L495 AbstractCegarLoop]: Abstraction has 56253 states and 242973 transitions. [2022-09-16 11:13:55,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 33.75) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 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 11:13:55,277 INFO L276 IsEmpty]: Start isEmpty. Operand 56253 states and 242973 transitions. [2022-09-16 11:13:55,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:13:55,278 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:55,279 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:55,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:13:55,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:55,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:55,281 INFO L85 PathProgramCache]: Analyzing trace with hash 909905453, now seen corresponding path program 1 times [2022-09-16 11:13:55,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:55,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255691006] [2022-09-16 11:13:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:55,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:55,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:55,381 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 11:13:55,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:55,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255691006] [2022-09-16 11:13:55,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255691006] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:55,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:13:55,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:13:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510184446] [2022-09-16 11:13:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:13:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:13:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:13:55,383 INFO L87 Difference]: Start difference. First operand 56253 states and 242973 transitions. Second operand has 6 states, 5 states have (on average 28.2) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:13:56,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:56,554 INFO L93 Difference]: Finished difference Result 69590 states and 296149 transitions. [2022-09-16 11:13:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:13:56,555 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 28.2) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-09-16 11:13:56,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:57,183 INFO L225 Difference]: With dead ends: 69590 [2022-09-16 11:13:57,184 INFO L226 Difference]: Without dead ends: 56253 [2022-09-16 11:13:57,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:13:57,184 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 421 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:57,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 660 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:13:57,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56253 states. [2022-09-16 11:13:59,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56253 to 56253. [2022-09-16 11:13:59,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56253 states, 56226 states have (on average 4.321345996514069) internal successors, (242972), 56252 states have internal predecessors, (242972), 0 states have call successors, (0), 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 11:13:59,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56253 states to 56253 states and 242972 transitions. [2022-09-16 11:13:59,649 INFO L78 Accepts]: Start accepts. Automaton has 56253 states and 242972 transitions. Word has length 141 [2022-09-16 11:13:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:59,649 INFO L495 AbstractCegarLoop]: Abstraction has 56253 states and 242972 transitions. [2022-09-16 11:13:59,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 28.2) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 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 11:13:59,650 INFO L276 IsEmpty]: Start isEmpty. Operand 56253 states and 242972 transitions. [2022-09-16 11:13:59,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-09-16 11:13:59,652 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:59,652 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:59,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:13:59,652 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:13:59,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1941754969, now seen corresponding path program 1 times [2022-09-16 11:13:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:59,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505976623] [2022-09-16 11:13:59,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:59,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:59,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:14:00,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:00,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505976623] [2022-09-16 11:14:00,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505976623] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:00,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600093539] [2022-09-16 11:14:00,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:00,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:00,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:00,585 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 11:14:00,585 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 11:14:00,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:00,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 45 conjunts are in the unsatisfiable core [2022-09-16 11:14:00,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:01,041 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 11:14:01,200 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 15 treesize of output 11 [2022-09-16 11:14:01,680 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:14:01,681 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 11 treesize of output 11 [2022-09-16 11:14:01,828 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 6 treesize of output 5 [2022-09-16 11:14:02,011 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 6 treesize of output 5 [2022-09-16 11:14:02,088 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 6 treesize of output 5 [2022-09-16 11:14:02,195 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 7 [2022-09-16 11:14:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:02,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:04,078 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:04,079 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 66 treesize of output 54 [2022-09-16 11:14:04,093 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:14:04,094 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 1244 treesize of output 1187 [2022-09-16 11:14:04,120 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:14:04,120 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 1180 treesize of output 1132 [2022-09-16 11:14:04,136 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:14:04,136 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 1132 treesize of output 940 [2022-09-16 11:14:04,151 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:14:04,151 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 940 treesize of output 844 [2022-09-16 11:14:04,925 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 11:14:05,152 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:05,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600093539] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:05,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:05,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 22, 20] total 55 [2022-09-16 11:14:05,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313673784] [2022-09-16 11:14:05,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:05,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-09-16 11:14:05,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:05,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-09-16 11:14:05,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=576, Invalid=2422, Unknown=82, NotChecked=0, Total=3080 [2022-09-16 11:14:05,155 INFO L87 Difference]: Start difference. First operand 56253 states and 242972 transitions. Second operand has 56 states, 55 states have (on average 6.8545454545454545) internal successors, (377), 56 states have internal predecessors, (377), 0 states have call successors, (0), 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 11:14:11,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:11,830 INFO L93 Difference]: Finished difference Result 290640 states and 1268249 transitions. [2022-09-16 11:14:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-09-16 11:14:11,830 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 6.8545454545454545) internal successors, (377), 56 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-09-16 11:14:11,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:14,650 INFO L225 Difference]: With dead ends: 290640 [2022-09-16 11:14:14,650 INFO L226 Difference]: Without dead ends: 290640 [2022-09-16 11:14:14,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1763, Invalid=7441, Unknown=108, NotChecked=0, Total=9312 [2022-09-16 11:14:14,653 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 2527 mSDsluCounter, 7854 mSDsCounter, 0 mSdLazyCounter, 1605 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2527 SdHoareTripleChecker+Valid, 6920 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2147 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:14,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2527 Valid, 6920 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1605 Invalid, 0 Unknown, 2147 Unchecked, 1.0s Time] [2022-09-16 11:14:15,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290640 states. [2022-09-16 11:14:22,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290640 to 79792. [2022-09-16 11:14:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79792 states, 79765 states have (on average 4.348924967090829) internal successors, (346892), 79791 states have internal predecessors, (346892), 0 states have call successors, (0), 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 11:14:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79792 states to 79792 states and 346892 transitions. [2022-09-16 11:14:22,593 INFO L78 Accepts]: Start accepts. Automaton has 79792 states and 346892 transitions. Word has length 150 [2022-09-16 11:14:22,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:22,594 INFO L495 AbstractCegarLoop]: Abstraction has 79792 states and 346892 transitions. [2022-09-16 11:14:22,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 6.8545454545454545) internal successors, (377), 56 states have internal predecessors, (377), 0 states have call successors, (0), 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 11:14:22,594 INFO L276 IsEmpty]: Start isEmpty. Operand 79792 states and 346892 transitions. [2022-09-16 11:14:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-09-16 11:14:22,596 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:22,596 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:22,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:14:22,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:22,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:14:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1941754971, now seen corresponding path program 1 times [2022-09-16 11:14:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639943519] [2022-09-16 11:14:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:22,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:22,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:14:23,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639943519] [2022-09-16 11:14:23,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639943519] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:23,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350126724] [2022-09-16 11:14:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:23,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:23,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:23,335 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 11:14:23,336 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 11:14:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:23,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:14:23,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:23,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:14:23,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:14:23,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350126724] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:14:23,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:14:23,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:14:23,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389901726] [2022-09-16 11:14:23,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:14:23,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:14:23,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:23,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:14:23,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:14:23,600 INFO L87 Difference]: Start difference. First operand 79792 states and 346892 transitions. Second operand has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 11:14:24,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:24,507 INFO L93 Difference]: Finished difference Result 71908 states and 308275 transitions. [2022-09-16 11:14:24,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:14:24,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-09-16 11:14:24,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:24,941 INFO L225 Difference]: With dead ends: 71908 [2022-09-16 11:14:24,941 INFO L226 Difference]: Without dead ends: 71908 [2022-09-16 11:14:24,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:14:24,942 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 78 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:24,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 384 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:14:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71908 states. [2022-09-16 11:14:26,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71908 to 71908. [2022-09-16 11:14:26,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71908 states, 71891 states have (on average 4.288088912381244) internal successors, (308275), 71907 states have internal predecessors, (308275), 0 states have call successors, (0), 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 11:14:27,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71908 states to 71908 states and 308275 transitions. [2022-09-16 11:14:27,645 INFO L78 Accepts]: Start accepts. Automaton has 71908 states and 308275 transitions. Word has length 150 [2022-09-16 11:14:27,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:27,646 INFO L495 AbstractCegarLoop]: Abstraction has 71908 states and 308275 transitions. [2022-09-16 11:14:27,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 0 states have call successors, (0), 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 11:14:27,646 INFO L276 IsEmpty]: Start isEmpty. Operand 71908 states and 308275 transitions. [2022-09-16 11:14:27,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-09-16 11:14:27,648 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:27,648 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:27,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:27,872 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,SelfDestructingSolverStorable13 [2022-09-16 11:14:27,873 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:14:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1621071971, now seen corresponding path program 2 times [2022-09-16 11:14:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:27,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117425404] [2022-09-16 11:14:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:28,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:14:28,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:28,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117425404] [2022-09-16 11:14:28,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117425404] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:28,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179058132] [2022-09-16 11:14:28,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:14:28,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:28,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:28,388 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 11:14:28,407 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 11:14:28,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:14:28,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 16 conjunts are in the unsatisfiable core [2022-09-16 11:14:28,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:29,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:14:29,116 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 18 treesize of output 20 [2022-09-16 11:14:29,185 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:14:29,185 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 23 treesize of output 10 [2022-09-16 11:14:29,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:14:29,211 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:14:29,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179058132] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:14:29,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:14:29,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [17] total 25 [2022-09-16 11:14:29,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176339915] [2022-09-16 11:14:29,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:14:29,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:14:29,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:29,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:14:29,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=590, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:14:29,213 INFO L87 Difference]: Start difference. First operand 71908 states and 308275 transitions. Second operand has 12 states, 11 states have (on average 13.636363636363637) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 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 11:14:31,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:31,067 INFO L93 Difference]: Finished difference Result 119224 states and 516050 transitions. [2022-09-16 11:14:31,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:14:31,068 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 13.636363636363637) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-09-16 11:14:31,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:32,210 INFO L225 Difference]: With dead ends: 119224 [2022-09-16 11:14:32,211 INFO L226 Difference]: Without dead ends: 119224 [2022-09-16 11:14:32,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=158, Invalid=1248, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:14:32,212 INFO L413 NwaCegarLoop]: 236 mSDtfsCounter, 571 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:32,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1790 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 300 Invalid, 0 Unknown, 72 Unchecked, 0.1s Time] [2022-09-16 11:14:32,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119224 states. [2022-09-16 11:14:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119224 to 79177. [2022-09-16 11:14:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79177 states, 79160 states have (on average 4.2899949469429) internal successors, (339596), 79176 states have internal predecessors, (339596), 0 states have call successors, (0), 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 11:14:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79177 states to 79177 states and 339596 transitions. [2022-09-16 11:14:35,495 INFO L78 Accepts]: Start accepts. Automaton has 79177 states and 339596 transitions. Word has length 150 [2022-09-16 11:14:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:35,495 INFO L495 AbstractCegarLoop]: Abstraction has 79177 states and 339596 transitions. [2022-09-16 11:14:35,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 13.636363636363637) internal successors, (150), 12 states have internal predecessors, (150), 0 states have call successors, (0), 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 11:14:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 79177 states and 339596 transitions. [2022-09-16 11:14:35,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-09-16 11:14:35,500 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:35,500 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:14:35,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:35,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:14:35,712 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:14:35,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:35,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1621071972, now seen corresponding path program 1 times [2022-09-16 11:14:35,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:35,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91085165] [2022-09-16 11:14:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:35,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:36,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:36,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:14:36,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:36,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91085165] [2022-09-16 11:14:36,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91085165] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:36,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371889177] [2022-09-16 11:14:36,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:36,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:36,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:36,807 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 11:14:36,808 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 11:14:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:14:36,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:37,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:14:37,758 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 18 treesize of output 20 [2022-09-16 11:14:37,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-09-16 11:14:37,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:14:37,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:37,871 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_412 (Array Int Int))) (< 0 (+ 2147483650 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_412) c_~queue1~0.base) (+ c_~queue1~0.offset (* c_~front1~0 4)))))) is different from false [2022-09-16 11:14:37,888 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:37,889 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 46 treesize of output 42 [2022-09-16 11:14:37,892 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 11 treesize of output 5 [2022-09-16 11:14:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:14:39,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371889177] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:39,244 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:39,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 17] total 48 [2022-09-16 11:14:39,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440403494] [2022-09-16 11:14:39,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:39,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-09-16 11:14:39,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:39,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-09-16 11:14:39,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=2063, Unknown=1, NotChecked=92, Total=2352 [2022-09-16 11:14:39,246 INFO L87 Difference]: Start difference. First operand 79177 states and 339596 transitions. Second operand has 49 states, 48 states have (on average 7.854166666666667) internal successors, (377), 49 states have internal predecessors, (377), 0 states have call successors, (0), 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 11:14:50,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:50,416 INFO L93 Difference]: Finished difference Result 422786 states and 1836610 transitions. [2022-09-16 11:14:50,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-09-16 11:14:50,416 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 7.854166666666667) internal successors, (377), 49 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2022-09-16 11:14:50,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:55,293 INFO L225 Difference]: With dead ends: 422786 [2022-09-16 11:14:55,293 INFO L226 Difference]: Without dead ends: 422786 [2022-09-16 11:14:55,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 267 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 4237 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=2158, Invalid=11887, Unknown=1, NotChecked=234, Total=14280 [2022-09-16 11:14:55,296 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 6490 mSDsluCounter, 8068 mSDsCounter, 0 mSdLazyCounter, 2638 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6490 SdHoareTripleChecker+Valid, 7360 SdHoareTripleChecker+Invalid, 3785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 845 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:55,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6490 Valid, 7360 Invalid, 3785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2638 Invalid, 0 Unknown, 845 Unchecked, 1.7s Time] [2022-09-16 11:14:56,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422786 states. [2022-09-16 11:15:06,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422786 to 115049. [2022-09-16 11:15:06,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115049 states, 115032 states have (on average 4.483508936643717) internal successors, (515747), 115048 states have internal predecessors, (515747), 0 states have call successors, (0), 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 11:15:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115049 states to 115049 states and 515747 transitions. [2022-09-16 11:15:07,368 INFO L78 Accepts]: Start accepts. Automaton has 115049 states and 515747 transitions. Word has length 150 [2022-09-16 11:15:07,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:07,368 INFO L495 AbstractCegarLoop]: Abstraction has 115049 states and 515747 transitions. [2022-09-16 11:15:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 7.854166666666667) internal successors, (377), 49 states have internal predecessors, (377), 0 states have call successors, (0), 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 11:15:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 115049 states and 515747 transitions. [2022-09-16 11:15:07,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-09-16 11:15:07,371 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:07,371 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:07,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:07,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:07,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:15:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash 64862862, now seen corresponding path program 1 times [2022-09-16 11:15:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:07,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738166394] [2022-09-16 11:15:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:15:07,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:07,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738166394] [2022-09-16 11:15:07,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738166394] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:15:07,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:15:07,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:15:07,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111224832] [2022-09-16 11:15:07,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:15:07,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:15:07,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:07,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:15:07,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:15:07,637 INFO L87 Difference]: Start difference. First operand 115049 states and 515747 transitions. Second operand has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 11:15:09,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:09,466 INFO L93 Difference]: Finished difference Result 131903 states and 591217 transitions. [2022-09-16 11:15:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:15:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-09-16 11:15:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:10,383 INFO L225 Difference]: With dead ends: 131903 [2022-09-16 11:15:10,383 INFO L226 Difference]: Without dead ends: 131903 [2022-09-16 11:15:10,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:15:10,387 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 85 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:10,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 464 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:15:10,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131903 states. [2022-09-16 11:15:14,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131903 to 127139. [2022-09-16 11:15:15,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127139 states, 127122 states have (on average 4.527839398373216) internal successors, (575588), 127138 states have internal predecessors, (575588), 0 states have call successors, (0), 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 11:15:16,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127139 states to 127139 states and 575588 transitions. [2022-09-16 11:15:16,316 INFO L78 Accepts]: Start accepts. Automaton has 127139 states and 575588 transitions. Word has length 151 [2022-09-16 11:15:16,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:16,316 INFO L495 AbstractCegarLoop]: Abstraction has 127139 states and 575588 transitions. [2022-09-16 11:15:16,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.333333333333336) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 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 11:15:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 127139 states and 575588 transitions. [2022-09-16 11:15:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-09-16 11:15:16,318 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:16,318 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-09-16 11:15:16,318 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:15:16,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:16,319 INFO L85 PathProgramCache]: Analyzing trace with hash 64862863, now seen corresponding path program 1 times [2022-09-16 11:15:16,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:16,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519244210] [2022-09-16 11:15:16,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:16,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:16,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:15:16,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519244210] [2022-09-16 11:15:16,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519244210] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:16,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647742933] [2022-09-16 11:15:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:16,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:16,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:16,686 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 11:15:16,687 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 11:15:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:16,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 28 conjunts are in the unsatisfiable core [2022-09-16 11:15:16,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:17,491 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-09-16 11:15:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:15:17,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:17,547 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:17,548 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 27 treesize of output 23 [2022-09-16 11:15:18,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:15:18,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647742933] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:18,486 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:18,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 11] total 41 [2022-09-16 11:15:18,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614074408] [2022-09-16 11:15:18,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:18,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-16 11:15:18,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:18,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-16 11:15:18,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=1401, Unknown=0, NotChecked=0, Total=1722 [2022-09-16 11:15:18,488 INFO L87 Difference]: Start difference. First operand 127139 states and 575588 transitions. Second operand has 42 states, 41 states have (on average 10.365853658536585) internal successors, (425), 42 states have internal predecessors, (425), 0 states have call successors, (0), 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 11:15:27,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:27,436 INFO L93 Difference]: Finished difference Result 387991 states and 1701384 transitions. [2022-09-16 11:15:27,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:15:27,436 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 10.365853658536585) internal successors, (425), 42 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-09-16 11:15:27,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:31,385 INFO L225 Difference]: With dead ends: 387991 [2022-09-16 11:15:31,386 INFO L226 Difference]: Without dead ends: 387991 [2022-09-16 11:15:31,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2927 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1736, Invalid=7194, Unknown=0, NotChecked=0, Total=8930 [2022-09-16 11:15:31,388 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 4281 mSDsluCounter, 5613 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4281 SdHoareTripleChecker+Valid, 5267 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:31,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4281 Valid, 5267 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-09-16 11:15:32,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387991 states. [2022-09-16 11:15:45,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387991 to 178949. [2022-09-16 11:15:45,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178949 states, 178932 states have (on average 4.619553796973152) internal successors, (826586), 178948 states have internal predecessors, (826586), 0 states have call successors, (0), 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 11:15:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178949 states to 178949 states and 826586 transitions. [2022-09-16 11:15:47,405 INFO L78 Accepts]: Start accepts. Automaton has 178949 states and 826586 transitions. Word has length 151 [2022-09-16 11:15:47,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 178949 states and 826586 transitions. [2022-09-16 11:15:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 10.365853658536585) internal successors, (425), 42 states have internal predecessors, (425), 0 states have call successors, (0), 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 11:15:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 178949 states and 826586 transitions. [2022-09-16 11:15:47,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-09-16 11:15:47,408 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:47,408 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:15:47,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:47,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:15:47,616 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:15:47,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:47,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1286375483, now seen corresponding path program 2 times [2022-09-16 11:15:47,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:47,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217652193] [2022-09-16 11:15:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:47,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:48,380 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:15:48,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217652193] [2022-09-16 11:15:48,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217652193] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:48,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318834778] [2022-09-16 11:15:48,381 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:15:48,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:48,382 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:48,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:15:48,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:15:48,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:48,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:15:48,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:49,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:15:49,009 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 18 treesize of output 20 [2022-09-16 11:15:49,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 7 [2022-09-16 11:15:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:15:49,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:15:49,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318834778] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:15:49,071 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:15:49,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 29 [2022-09-16 11:15:49,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403945650] [2022-09-16 11:15:49,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:15:49,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:15:49,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:49,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:15:49,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:15:49,073 INFO L87 Difference]: Start difference. First operand 178949 states and 826586 transitions. Second operand has 13 states, 12 states have (on average 12.583333333333334) internal successors, (151), 13 states have internal predecessors, (151), 0 states have call successors, (0), 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 11:15:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:53,613 INFO L93 Difference]: Finished difference Result 275684 states and 1276179 transitions. [2022-09-16 11:15:53,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:15:53,614 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.583333333333334) internal successors, (151), 13 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2022-09-16 11:15:53,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:58,083 INFO L225 Difference]: With dead ends: 275684 [2022-09-16 11:15:58,084 INFO L226 Difference]: Without dead ends: 275684 [2022-09-16 11:15:58,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=230, Invalid=1576, Unknown=0, NotChecked=0, Total=1806 [2022-09-16 11:15:58,085 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 794 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:58,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1700 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:15:59,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275684 states. [2022-09-16 11:16:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275684 to 176779. [2022-09-16 11:16:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176779 states, 176762 states have (on average 4.61715187653455) internal successors, (816137), 176778 states have internal predecessors, (816137), 0 states have call successors, (0), 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 11:16:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176779 states to 176779 states and 816137 transitions. [2022-09-16 11:16:10,417 INFO L78 Accepts]: Start accepts. Automaton has 176779 states and 816137 transitions. Word has length 151 [2022-09-16 11:16:10,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:10,418 INFO L495 AbstractCegarLoop]: Abstraction has 176779 states and 816137 transitions. [2022-09-16 11:16:10,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.583333333333334) internal successors, (151), 13 states have internal predecessors, (151), 0 states have call successors, (0), 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 11:16:10,418 INFO L276 IsEmpty]: Start isEmpty. Operand 176779 states and 816137 transitions. [2022-09-16 11:16:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-09-16 11:16:10,423 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:10,423 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:10,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:10,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:10,639 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:16:10,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:10,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1992815807, now seen corresponding path program 1 times [2022-09-16 11:16:10,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:10,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931919773] [2022-09-16 11:16:10,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:10,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:16:11,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931919773] [2022-09-16 11:16:11,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931919773] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259814508] [2022-09-16 11:16:11,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:11,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:11,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:11,269 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:11,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:16:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:11,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:16:11,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:11,394 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 11:16:11,421 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:16:11,422 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 11:16:11,710 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:16:11,710 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 11:16:12,358 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 18 treesize of output 20 [2022-09-16 11:16:12,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2022-09-16 11:16:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:16:12,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:12,434 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_560 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_560) c_~queue1~0.base) (+ c_~queue1~0.offset (* c_~front1~0 4))) 2147483647)) is different from false [2022-09-16 11:16:12,448 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:12,448 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 42 treesize of output 38 [2022-09-16 11:16:12,458 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 9 treesize of output 3 [2022-09-16 11:16:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:16:13,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259814508] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:13,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:13,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 50 [2022-09-16 11:16:13,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628826351] [2022-09-16 11:16:13,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:13,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-09-16 11:16:13,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:13,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-09-16 11:16:13,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=2244, Unknown=1, NotChecked=96, Total=2550 [2022-09-16 11:16:13,873 INFO L87 Difference]: Start difference. First operand 176779 states and 816137 transitions. Second operand has 51 states, 50 states have (on average 8.22) internal successors, (411), 51 states have internal predecessors, (411), 0 states have call successors, (0), 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 11:16:28,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:28,530 INFO L93 Difference]: Finished difference Result 524219 states and 2320011 transitions. [2022-09-16 11:16:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-09-16 11:16:28,552 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 8.22) internal successors, (411), 51 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-09-16 11:16:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:37,076 INFO L225 Difference]: With dead ends: 524219 [2022-09-16 11:16:37,077 INFO L226 Difference]: Without dead ends: 524219 [2022-09-16 11:16:37,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 277 SyntacticMatches, 9 SemanticMatches, 119 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4356 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2259, Invalid=12022, Unknown=3, NotChecked=236, Total=14520 [2022-09-16 11:16:37,080 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 5928 mSDsluCounter, 8104 mSDsCounter, 0 mSdLazyCounter, 2537 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5928 SdHoareTripleChecker+Valid, 7308 SdHoareTripleChecker+Invalid, 3878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 2537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1067 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:37,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5928 Valid, 7308 Invalid, 3878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 2537 Invalid, 0 Unknown, 1067 Unchecked, 1.3s Time] [2022-09-16 11:16:38,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524219 states. [2022-09-16 11:16:55,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524219 to 193139. [2022-09-16 11:16:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193139 states, 193122 states have (on average 4.670840194281335) internal successors, (902042), 193138 states have internal predecessors, (902042), 0 states have call successors, (0), 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 11:16:57,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193139 states to 193139 states and 902042 transitions. [2022-09-16 11:16:57,645 INFO L78 Accepts]: Start accepts. Automaton has 193139 states and 902042 transitions. Word has length 155 [2022-09-16 11:16:57,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:57,646 INFO L495 AbstractCegarLoop]: Abstraction has 193139 states and 902042 transitions. [2022-09-16 11:16:57,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 8.22) internal successors, (411), 51 states have internal predecessors, (411), 0 states have call successors, (0), 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 11:16:57,646 INFO L276 IsEmpty]: Start isEmpty. Operand 193139 states and 902042 transitions. [2022-09-16 11:16:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-09-16 11:16:57,651 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:57,651 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:16:57,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:57,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:57,852 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:16:57,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:57,852 INFO L85 PathProgramCache]: Analyzing trace with hash 334176324, now seen corresponding path program 1 times [2022-09-16 11:16:57,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:57,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680181287] [2022-09-16 11:16:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:57,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:16:57,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680181287] [2022-09-16 11:16:57,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680181287] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:57,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340414914] [2022-09-16 11:16:57,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:57,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:57,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:57,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:57,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:16:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:58,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 13 conjunts are in the unsatisfiable core [2022-09-16 11:16:58,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:16:58,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:16:58,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340414914] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:58,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:58,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 18 [2022-09-16 11:16:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394449320] [2022-09-16 11:16:58,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:58,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:16:58,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:16:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:16:58,357 INFO L87 Difference]: Start difference. First operand 193139 states and 902042 transitions. Second operand has 18 states, 18 states have (on average 16.5) internal successors, (297), 18 states have internal predecessors, (297), 0 states have call successors, (0), 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 11:17:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:10,878 INFO L93 Difference]: Finished difference Result 697181 states and 3097114 transitions. [2022-09-16 11:17:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:17:10,879 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 16.5) internal successors, (297), 18 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2022-09-16 11:17:10,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:19,003 INFO L225 Difference]: With dead ends: 697181 [2022-09-16 11:17:19,004 INFO L226 Difference]: Without dead ends: 637037 [2022-09-16 11:17:19,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=333, Invalid=927, Unknown=0, NotChecked=0, Total=1260 [2022-09-16 11:17:19,005 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 2602 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:19,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2602 Valid, 1663 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:17:20,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637037 states. [2022-09-16 11:17:49,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637037 to 393570. [2022-09-16 11:17:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393570 states, 393549 states have (on average 4.644143423055325) internal successors, (1827698), 393569 states have internal predecessors, (1827698), 0 states have call successors, (0), 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 11:17:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393570 states to 393570 states and 1827698 transitions. [2022-09-16 11:17:58,363 INFO L78 Accepts]: Start accepts. Automaton has 393570 states and 1827698 transitions. Word has length 155 [2022-09-16 11:17:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:58,363 INFO L495 AbstractCegarLoop]: Abstraction has 393570 states and 1827698 transitions. [2022-09-16 11:17:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 16.5) internal successors, (297), 18 states have internal predecessors, (297), 0 states have call successors, (0), 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 11:17:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 393570 states and 1827698 transitions. [2022-09-16 11:17:58,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-09-16 11:17:58,370 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:58,370 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:17:58,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:17:58,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-09-16 11:17:58,593 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 41 more)] === [2022-09-16 11:17:58,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:58,594 INFO L85 PathProgramCache]: Analyzing trace with hash 998403703, now seen corresponding path program 2 times [2022-09-16 11:17:58,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:58,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900457579] [2022-09-16 11:17:58,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:58,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:59,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:17:59,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:59,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900457579] [2022-09-16 11:17:59,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900457579] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:59,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475561498] [2022-09-16 11:17:59,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:17:59,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:59,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:59,203 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:59,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:17:59,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:17:59,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:59,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 30 conjunts are in the unsatisfiable core [2022-09-16 11:17:59,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:59,371 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 11:17:59,414 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:17:59,414 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 11:18:00,123 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:18:00,124 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 11:18:00,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:18:00,571 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 18 treesize of output 20 [2022-09-16 11:18:00,626 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 18 treesize of output 20 [2022-09-16 11:18:00,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 7 [2022-09-16 11:18:00,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:18:00,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:18:00,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475561498] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:18:00,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:18:00,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [19] total 31 [2022-09-16 11:18:00,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550774730] [2022-09-16 11:18:00,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:18:00,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-09-16 11:18:00,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:18:00,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-09-16 11:18:00,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:18:00,678 INFO L87 Difference]: Start difference. First operand 393570 states and 1827698 transitions. Second operand has 15 states, 14 states have (on average 11.071428571428571) internal successors, (155), 15 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)