/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-more-queue-add-2-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:09:25,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:09:25,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:09:25,767 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:09:25,767 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:09:25,770 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:09:25,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:09:25,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:09:25,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:09:25,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:09:25,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:09:25,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:09:25,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:09:25,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:09:25,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:09:25,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:09:25,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:09:25,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:09:25,792 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:09:25,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:09:25,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:09:25,800 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:09:25,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:09:25,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:09:25,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:09:25,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:09:25,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:09:25,812 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:09:25,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:09:25,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:09:25,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:09:25,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:09:25,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:09:25,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:09:25,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:09:25,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:09:25,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:09:25,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:09:25,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:09:25,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:09:25,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:09:25,820 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 11:09:25,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:09:25,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:09:25,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:09:25,854 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:09:25,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:09:25,855 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:09:25,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:09:25,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:09:25,856 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:09:25,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:09:25,857 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:09:25,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:09:25,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:09:25,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:09:25,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:09:25,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:09:25,858 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:09:25,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:09:25,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:09:25,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:09:25,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:09:25,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:09:25,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:09:25,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:09:25,860 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:09:25,860 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:09:25,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:09:26,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:09:26,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:09:26,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:09:26,127 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:09:26,129 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:09:26,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-09-16 11:09:26,212 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd775684/24319b87fcf74046925de5878bb0f315/FLAG6729f3c75 [2022-09-16 11:09:26,568 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:09:26,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-09-16 11:09:26,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd775684/24319b87fcf74046925de5878bb0f315/FLAG6729f3c75 [2022-09-16 11:09:26,989 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd775684/24319b87fcf74046925de5878bb0f315 [2022-09-16 11:09:26,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:09:26,992 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:09:26,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:09:26,996 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:09:26,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:09:27,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:09:26" (1/1) ... [2022-09-16 11:09:27,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fd10624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27, skipping insertion in model container [2022-09-16 11:09:27,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:09:26" (1/1) ... [2022-09-16 11:09:27,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:09:27,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:09:27,208 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-09-16 11:09:27,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:09:27,235 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:09:27,264 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-09-16 11:09:27,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:09:27,279 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:09:27,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27 WrapperNode [2022-09-16 11:09:27,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:09:27,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:09:27,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:09:27,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:09:27,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,294 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,316 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 175 [2022-09-16 11:09:27,317 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:09:27,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:09:27,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:09:27,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:09:27,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,328 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:09:27,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:09:27,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:09:27,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:09:27,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:09:27,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:27,382 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 11:09:27,384 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 11:09:27,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:09:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:09:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:09:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:09:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:09:27,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:09:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:09:27,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:09:27,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:09:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:09:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:09:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:09:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:09:27,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:09:27,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:09:27,418 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 11:09:27,503 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:09:27,504 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:09:27,791 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:09:27,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:09:27,914 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:09:27,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:09:27 BoogieIcfgContainer [2022-09-16 11:09:27,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:09:27,919 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:09:27,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:09:27,922 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:09:27,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:09:26" (1/3) ... [2022-09-16 11:09:27,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6396bd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:09:27, skipping insertion in model container [2022-09-16 11:09:27,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (2/3) ... [2022-09-16 11:09:27,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6396bd1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:09:27, skipping insertion in model container [2022-09-16 11:09:27,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:09:27" (3/3) ... [2022-09-16 11:09:27,925 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-09-16 11:09:27,932 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:09:27,941 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:09:27,941 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:09:27,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:09:28,025 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:09:28,068 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 158 places, 162 transitions, 340 flow [2022-09-16 11:09:28,170 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1476 states, 1440 states have (on average 2.7736111111111112) internal successors, (3994), 1475 states have internal predecessors, (3994), 0 states have call successors, (0), 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 11:09:28,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:09:28,191 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;@59a99973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:09:28,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-09-16 11:09:28,197 INFO L276 IsEmpty]: Start isEmpty. Operand has 1476 states, 1440 states have (on average 2.7736111111111112) internal successors, (3994), 1475 states have internal predecessors, (3994), 0 states have call successors, (0), 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 11:09:28,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-09-16 11:09:28,205 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:28,205 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] [2022-09-16 11:09:28,206 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:28,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:28,209 INFO L85 PathProgramCache]: Analyzing trace with hash -932682411, now seen corresponding path program 1 times [2022-09-16 11:09:28,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:28,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286252385] [2022-09-16 11:09:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:28,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:28,451 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 11:09:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:28,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286252385] [2022-09-16 11:09:28,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286252385] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:28,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:28,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613929783] [2022-09-16 11:09:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:28,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:28,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:28,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:28,499 INFO L87 Difference]: Start difference. First operand has 1476 states, 1440 states have (on average 2.7736111111111112) internal successors, (3994), 1475 states have internal predecessors, (3994), 0 states have call successors, (0), 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 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 11:09:28,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:28,703 INFO L93 Difference]: Finished difference Result 2462 states and 6364 transitions. [2022-09-16 11:09:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:28,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 62 [2022-09-16 11:09:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:28,741 INFO L225 Difference]: With dead ends: 2462 [2022-09-16 11:09:28,741 INFO L226 Difference]: Without dead ends: 2458 [2022-09-16 11:09:28,743 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 11:09:28,746 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 67 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:28,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 341 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:28,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2458 states. [2022-09-16 11:09:28,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2458 to 1265. [2022-09-16 11:09:28,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1244 states have (on average 2.5860128617363345) internal successors, (3217), 1264 states have internal predecessors, (3217), 0 states have call successors, (0), 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 11:09:28,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 3217 transitions. [2022-09-16 11:09:28,898 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 3217 transitions. Word has length 62 [2022-09-16 11:09:28,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:28,901 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 3217 transitions. [2022-09-16 11:09:28,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 11:09:28,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 3217 transitions. [2022-09-16 11:09:28,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-09-16 11:09:28,906 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:28,907 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] [2022-09-16 11:09:28,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:09:28,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1791117521, now seen corresponding path program 1 times [2022-09-16 11:09:28,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726575074] [2022-09-16 11:09:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:28,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:29,002 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 11:09:29,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:29,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726575074] [2022-09-16 11:09:29,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726575074] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:29,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672480848] [2022-09-16 11:09:29,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:29,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:29,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:29,007 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 11:09:29,013 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 11:09:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:29,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:29,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:29,203 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 11:09:29,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:29,271 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 11:09:29,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672480848] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:29,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:29,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:09:29,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881975267] [2022-09-16 11:09:29,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:29,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:09:29,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:09:29,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:09:29,282 INFO L87 Difference]: Start difference. First operand 1265 states and 3217 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:09:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:29,544 INFO L93 Difference]: Finished difference Result 6060 states and 15815 transitions. [2022-09-16 11:09:29,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:09:29,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 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 71 [2022-09-16 11:09:29,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:29,591 INFO L225 Difference]: With dead ends: 6060 [2022-09-16 11:09:29,591 INFO L226 Difference]: Without dead ends: 6060 [2022-09-16 11:09:29,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 135 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 11:09:29,593 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 531 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:29,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [531 Valid, 762 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6060 states. [2022-09-16 11:09:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6060 to 1291. [2022-09-16 11:09:29,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1270 states have (on average 2.55748031496063) internal successors, (3248), 1290 states have internal predecessors, (3248), 0 states have call successors, (0), 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 11:09:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 3248 transitions. [2022-09-16 11:09:29,692 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 3248 transitions. Word has length 71 [2022-09-16 11:09:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:29,694 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 3248 transitions. [2022-09-16 11:09:29,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 12 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:09:29,695 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 3248 transitions. [2022-09-16 11:09:29,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-09-16 11:09:29,696 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:29,697 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] [2022-09-16 11:09:29,727 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 11:09:29,903 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 11:09:29,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:29,904 INFO L85 PathProgramCache]: Analyzing trace with hash 309932108, now seen corresponding path program 1 times [2022-09-16 11:09:29,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:29,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358838724] [2022-09-16 11:09:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:29,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:30,006 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 11:09:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:30,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358838724] [2022-09-16 11:09:30,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358838724] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:30,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235978368] [2022-09-16 11:09:30,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:30,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:30,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:30,011 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 11:09:30,012 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 11:09:30,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:30,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:30,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:30,163 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 11:09:30,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:30,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235978368] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:30,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:30,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:09:30,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428725892] [2022-09-16 11:09:30,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:30,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:30,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:30,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:30,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:09:30,167 INFO L87 Difference]: Start difference. First operand 1291 states and 3248 transitions. Second operand has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 11:09:30,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:30,271 INFO L93 Difference]: Finished difference Result 2481 states and 6386 transitions. [2022-09-16 11:09:30,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:30,271 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-09-16 11:09:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:30,285 INFO L225 Difference]: With dead ends: 2481 [2022-09-16 11:09:30,286 INFO L226 Difference]: Without dead ends: 2481 [2022-09-16 11:09:30,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:09:30,290 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 134 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:30,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 432 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:30,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2022-09-16 11:09:30,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 1290. [2022-09-16 11:09:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1270 states have (on average 2.5551181102362204) internal successors, (3245), 1289 states have internal predecessors, (3245), 0 states have call successors, (0), 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 11:09:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3245 transitions. [2022-09-16 11:09:30,364 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3245 transitions. Word has length 72 [2022-09-16 11:09:30,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:30,365 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 3245 transitions. [2022-09-16 11:09:30,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.4) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 11:09:30,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3245 transitions. [2022-09-16 11:09:30,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-09-16 11:09:30,371 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:30,371 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] [2022-09-16 11:09:30,400 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 11:09:30,591 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 11:09:30,592 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:30,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1466865984, now seen corresponding path program 1 times [2022-09-16 11:09:30,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:30,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920045754] [2022-09-16 11:09:30,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:30,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:30,707 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 11:09:30,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:30,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920045754] [2022-09-16 11:09:30,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920045754] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:30,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:30,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:09:30,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678835317] [2022-09-16 11:09:30,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:30,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:09:30,716 INFO L87 Difference]: Start difference. First operand 1290 states and 3245 transitions. Second operand has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 11:09:30,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:30,817 INFO L93 Difference]: Finished difference Result 1393 states and 3446 transitions. [2022-09-16 11:09:30,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:30,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-09-16 11:09:30,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:30,826 INFO L225 Difference]: With dead ends: 1393 [2022-09-16 11:09:30,826 INFO L226 Difference]: Without dead ends: 1290 [2022-09-16 11:09:30,826 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 11:09:30,828 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 306 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:30,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 338 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:30,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-09-16 11:09:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1290. [2022-09-16 11:09:30,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1270 states have (on average 2.5543307086614173) internal successors, (3244), 1289 states have internal predecessors, (3244), 0 states have call successors, (0), 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 11:09:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 3244 transitions. [2022-09-16 11:09:30,866 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 3244 transitions. Word has length 75 [2022-09-16 11:09:30,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:30,867 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 3244 transitions. [2022-09-16 11:09:30,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 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 11:09:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 3244 transitions. [2022-09-16 11:09:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-09-16 11:09:30,869 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:30,870 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] [2022-09-16 11:09:30,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:09:30,871 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:30,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:30,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1348639142, now seen corresponding path program 1 times [2022-09-16 11:09:30,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:30,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102860370] [2022-09-16 11:09:30,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:30,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:30,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:30,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102860370] [2022-09-16 11:09:30,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102860370] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:30,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503901692] [2022-09-16 11:09:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:30,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:30,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:30,995 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 11:09:30,997 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 11:09:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:31,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:31,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:31,160 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 11:09:31,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:31,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503901692] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:31,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:31,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:09:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833759988] [2022-09-16 11:09:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:31,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:09:31,162 INFO L87 Difference]: Start difference. First operand 1290 states and 3244 transitions. Second operand has 4 states, 3 states have (on average 28.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 11:09:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:31,190 INFO L93 Difference]: Finished difference Result 1091 states and 2708 transitions. [2022-09-16 11:09:31,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:09:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 28.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2022-09-16 11:09:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:31,195 INFO L225 Difference]: With dead ends: 1091 [2022-09-16 11:09:31,196 INFO L226 Difference]: Without dead ends: 1079 [2022-09-16 11:09:31,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:09:31,197 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 58 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 240 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:31,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 240 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1079 states. [2022-09-16 11:09:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1079 to 1079. [2022-09-16 11:09:31,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 1070 states have (on average 2.5) internal successors, (2675), 1078 states have internal predecessors, (2675), 0 states have call successors, (0), 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 11:09:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 2675 transitions. [2022-09-16 11:09:31,226 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 2675 transitions. Word has length 84 [2022-09-16 11:09:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:31,226 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 2675 transitions. [2022-09-16 11:09:31,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 28.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 11:09:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 2675 transitions. [2022-09-16 11:09:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-09-16 11:09:31,228 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:31,228 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] [2022-09-16 11:09:31,257 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 11:09:31,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:31,449 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:31,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:31,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2108780891, now seen corresponding path program 1 times [2022-09-16 11:09:31,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:31,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088966943] [2022-09-16 11:09:31,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:31,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:31,529 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 11:09:31,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:31,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088966943] [2022-09-16 11:09:31,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088966943] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:31,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:31,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:31,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231988340] [2022-09-16 11:09:31,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:31,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:31,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:31,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:31,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:31,531 INFO L87 Difference]: Start difference. First operand 1079 states and 2675 transitions. Second operand has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 11:09:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:31,579 INFO L93 Difference]: Finished difference Result 1858 states and 4734 transitions. [2022-09-16 11:09:31,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:31,580 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-09-16 11:09:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:31,589 INFO L225 Difference]: With dead ends: 1858 [2022-09-16 11:09:31,589 INFO L226 Difference]: Without dead ends: 1858 [2022-09-16 11:09:31,589 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 11:09:31,591 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 82 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:31,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 418 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2022-09-16 11:09:31,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1451. [2022-09-16 11:09:31,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1442 states have (on average 2.5804438280166435) internal successors, (3721), 1450 states have internal predecessors, (3721), 0 states have call successors, (0), 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 11:09:31,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 3721 transitions. [2022-09-16 11:09:31,644 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 3721 transitions. Word has length 87 [2022-09-16 11:09:31,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:31,645 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 3721 transitions. [2022-09-16 11:09:31,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 29.0) internal successors, (87), 4 states have internal predecessors, (87), 0 states have call successors, (0), 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 11:09:31,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 3721 transitions. [2022-09-16 11:09:31,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-09-16 11:09:31,647 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:31,647 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] [2022-09-16 11:09:31,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:09:31,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:31,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:31,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1709936893, now seen corresponding path program 1 times [2022-09-16 11:09:31,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:31,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176441536] [2022-09-16 11:09:31,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:31,787 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 11:09:31,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:31,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176441536] [2022-09-16 11:09:31,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176441536] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:31,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:31,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:31,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865840849] [2022-09-16 11:09:31,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:31,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:09:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:31,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:09:31,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:09:31,789 INFO L87 Difference]: Start difference. First operand 1451 states and 3721 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 11:09:31,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:31,811 INFO L93 Difference]: Finished difference Result 1353 states and 3403 transitions. [2022-09-16 11:09:31,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:09:31,812 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-09-16 11:09:31,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:31,825 INFO L225 Difference]: With dead ends: 1353 [2022-09-16 11:09:31,826 INFO L226 Difference]: Without dead ends: 1353 [2022-09-16 11:09:31,829 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 11:09:31,829 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:31,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 165 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:31,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-09-16 11:09:31,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1353. [2022-09-16 11:09:31,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1353 states, 1344 states have (on average 2.5319940476190474) internal successors, (3403), 1352 states have internal predecessors, (3403), 0 states have call successors, (0), 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 11:09:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 3403 transitions. [2022-09-16 11:09:31,869 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 3403 transitions. Word has length 92 [2022-09-16 11:09:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:31,869 INFO L495 AbstractCegarLoop]: Abstraction has 1353 states and 3403 transitions. [2022-09-16 11:09:31,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 11:09:31,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 3403 transitions. [2022-09-16 11:09:31,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:31,871 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:31,871 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] [2022-09-16 11:09:31,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:09:31,871 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:31,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:31,876 INFO L85 PathProgramCache]: Analyzing trace with hash -4816133, now seen corresponding path program 1 times [2022-09-16 11:09:31,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:31,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752546593] [2022-09-16 11:09:31,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:31,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:32,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:32,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752546593] [2022-09-16 11:09:32,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752546593] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:32,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431753027] [2022-09-16 11:09:32,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:32,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:32,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:32,759 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 11:09:32,761 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 11:09:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:32,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:09:32,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:33,400 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 11:09:34,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:34,171 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 11:09:34,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:34,379 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 11:09:34,528 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:09:34,529 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 11:09:34,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:34,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:34,686 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_126 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_126) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483648)) is different from false [2022-09-16 11:09:35,397 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:35,398 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 29 treesize of output 30 [2022-09-16 11:09:35,409 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:35,409 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 158 treesize of output 146 [2022-09-16 11:09:35,416 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 130 treesize of output 118 [2022-09-16 11:09:35,422 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 118 treesize of output 94 [2022-09-16 11:09:36,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:36,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431753027] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:36,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:36,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-09-16 11:09:36,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929504383] [2022-09-16 11:09:36,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-09-16 11:09:36,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:36,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-09-16 11:09:36,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3650, Unknown=5, NotChecked=122, Total=4032 [2022-09-16 11:09:36,759 INFO L87 Difference]: Start difference. First operand 1353 states and 3403 transitions. Second operand has 64 states, 63 states have (on average 3.8412698412698414) internal successors, (242), 64 states have internal predecessors, (242), 0 states have call successors, (0), 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 11:09:39,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:39,135 INFO L93 Difference]: Finished difference Result 2472 states and 6343 transitions. [2022-09-16 11:09:39,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:09:39,136 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 3.8412698412698414) internal successors, (242), 64 states have internal predecessors, (242), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:39,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:39,145 INFO L225 Difference]: With dead ends: 2472 [2022-09-16 11:09:39,145 INFO L226 Difference]: Without dead ends: 2472 [2022-09-16 11:09:39,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 150 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1800 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=678, Invalid=6631, Unknown=5, NotChecked=168, Total=7482 [2022-09-16 11:09:39,148 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 450 mSDsluCounter, 4826 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 4783 SdHoareTripleChecker+Invalid, 1631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 601 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:39,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 4783 Invalid, 1631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1002 Invalid, 0 Unknown, 601 Unchecked, 0.6s Time] [2022-09-16 11:09:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-09-16 11:09:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 1502. [2022-09-16 11:09:39,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1493 states have (on average 2.4949765572672473) internal successors, (3725), 1501 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 3725 transitions. [2022-09-16 11:09:39,194 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 3725 transitions. Word has length 95 [2022-09-16 11:09:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:39,195 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 3725 transitions. [2022-09-16 11:09:39,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 3.8412698412698414) internal successors, (242), 64 states have internal predecessors, (242), 0 states have call successors, (0), 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 11:09:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 3725 transitions. [2022-09-16 11:09:39,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:39,197 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:39,197 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] [2022-09-16 11:09:39,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:39,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:39,420 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:39,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:39,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2042579571, now seen corresponding path program 2 times [2022-09-16 11:09:39,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:39,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968339523] [2022-09-16 11:09:39,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:39,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:39,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:39,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968339523] [2022-09-16 11:09:39,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968339523] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:39,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715350001] [2022-09-16 11:09:39,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:09:39,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:39,948 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 11:09:39,949 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 11:09:40,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:09:40,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:40,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:09:40,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:40,139 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 11:09:40,156 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 11:09:40,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:40,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1715350001] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:40,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:40,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-09-16 11:09:40,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68168115] [2022-09-16 11:09:40,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:40,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:40,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:09:40,158 INFO L87 Difference]: Start difference. First operand 1502 states and 3725 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:40,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:40,229 INFO L93 Difference]: Finished difference Result 1792 states and 4411 transitions. [2022-09-16 11:09:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:09:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:40,234 INFO L225 Difference]: With dead ends: 1792 [2022-09-16 11:09:40,234 INFO L226 Difference]: Without dead ends: 1792 [2022-09-16 11:09:40,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:09:40,235 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 49 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:40,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 480 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2022-09-16 11:09:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1502. [2022-09-16 11:09:40,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1502 states, 1493 states have (on average 2.4949765572672473) internal successors, (3725), 1501 states have internal predecessors, (3725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1502 states to 1502 states and 3725 transitions. [2022-09-16 11:09:40,277 INFO L78 Accepts]: Start accepts. Automaton has 1502 states and 3725 transitions. Word has length 95 [2022-09-16 11:09:40,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:40,278 INFO L495 AbstractCegarLoop]: Abstraction has 1502 states and 3725 transitions. [2022-09-16 11:09:40,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:40,278 INFO L276 IsEmpty]: Start isEmpty. Operand 1502 states and 3725 transitions. [2022-09-16 11:09:40,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:40,279 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:40,279 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] [2022-09-16 11:09:40,305 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 11:09:40,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:40,496 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:40,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1819234803, now seen corresponding path program 3 times [2022-09-16 11:09:40,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:40,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089253988] [2022-09-16 11:09:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:40,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:40,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:40,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:40,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:40,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089253988] [2022-09-16 11:09:40,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089253988] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:40,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452586382] [2022-09-16 11:09:40,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:09:40,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:40,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:40,849 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 11:09:40,857 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 11:09:40,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:09:40,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:40,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:09:40,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:41,155 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:09:41,156 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 11:09:41,174 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 11:09:41,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:41,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452586382] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:41,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:41,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:09:41,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963984848] [2022-09-16 11:09:41,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:41,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:41,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:41,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:41,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:09:41,176 INFO L87 Difference]: Start difference. First operand 1502 states and 3725 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:41,224 INFO L93 Difference]: Finished difference Result 1686 states and 4175 transitions. [2022-09-16 11:09:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:09:41,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:41,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:41,230 INFO L225 Difference]: With dead ends: 1686 [2022-09-16 11:09:41,230 INFO L226 Difference]: Without dead ends: 1686 [2022-09-16 11:09:41,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:09:41,231 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 34 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 43 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:41,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 513 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 43 Unchecked, 0.0s Time] [2022-09-16 11:09:41,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2022-09-16 11:09:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1534. [2022-09-16 11:09:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1534 states, 1525 states have (on average 2.4963934426229506) internal successors, (3807), 1533 states have internal predecessors, (3807), 0 states have call successors, (0), 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 11:09:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 3807 transitions. [2022-09-16 11:09:41,274 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 3807 transitions. Word has length 95 [2022-09-16 11:09:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:41,275 INFO L495 AbstractCegarLoop]: Abstraction has 1534 states and 3807 transitions. [2022-09-16 11:09:41,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:41,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 3807 transitions. [2022-09-16 11:09:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:41,277 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:41,277 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] [2022-09-16 11:09:41,300 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 11:09:41,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:41,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:41,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:41,493 INFO L85 PathProgramCache]: Analyzing trace with hash 527805879, now seen corresponding path program 1 times [2022-09-16 11:09:41,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:41,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502420478] [2022-09-16 11:09:41,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:41,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:41,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:41,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502420478] [2022-09-16 11:09:41,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502420478] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:41,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361163501] [2022-09-16 11:09:41,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:41,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:41,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:41,913 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 11:09:41,914 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 11:09:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:41,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:09:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:42,403 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 11:09:42,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:42,971 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 11:09:43,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:43,152 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 11:09:43,282 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:09:43,283 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 11:09:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:43,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:43,401 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_202 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_202) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483648)) is different from false [2022-09-16 11:09:43,999 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:43,999 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 29 treesize of output 30 [2022-09-16 11:09:44,007 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:44,007 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 158 treesize of output 146 [2022-09-16 11:09:44,012 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 130 treesize of output 118 [2022-09-16 11:09:44,015 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 118 treesize of output 94 [2022-09-16 11:09:44,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:44,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361163501] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:44,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:44,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 22] total 60 [2022-09-16 11:09:44,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443319638] [2022-09-16 11:09:44,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:44,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-09-16 11:09:44,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:44,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-09-16 11:09:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=3328, Unknown=5, NotChecked=116, Total=3660 [2022-09-16 11:09:44,955 INFO L87 Difference]: Start difference. First operand 1534 states and 3807 transitions. Second operand has 61 states, 60 states have (on average 4.05) internal successors, (243), 61 states have internal predecessors, (243), 0 states have call successors, (0), 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 11:09:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:46,946 INFO L93 Difference]: Finished difference Result 3229 states and 8456 transitions. [2022-09-16 11:09:46,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:09:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 4.05) internal successors, (243), 61 states have internal predecessors, (243), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:46,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:46,956 INFO L225 Difference]: With dead ends: 3229 [2022-09-16 11:09:46,956 INFO L226 Difference]: Without dead ends: 3229 [2022-09-16 11:09:46,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 148 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1516 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=629, Invalid=6342, Unknown=5, NotChecked=164, Total=7140 [2022-09-16 11:09:46,958 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 480 mSDsluCounter, 4839 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 4831 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 762 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:46,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 4831 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1016 Invalid, 0 Unknown, 762 Unchecked, 0.5s Time] [2022-09-16 11:09:46,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2022-09-16 11:09:47,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 2041. [2022-09-16 11:09:47,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 2032 states have (on average 2.5585629921259843) internal successors, (5199), 2040 states have internal predecessors, (5199), 0 states have call successors, (0), 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 11:09:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 5199 transitions. [2022-09-16 11:09:47,029 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 5199 transitions. Word has length 95 [2022-09-16 11:09:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:47,029 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 5199 transitions. [2022-09-16 11:09:47,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 4.05) internal successors, (243), 61 states have internal predecessors, (243), 0 states have call successors, (0), 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 11:09:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 5199 transitions. [2022-09-16 11:09:47,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:47,031 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:47,031 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] [2022-09-16 11:09:47,056 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 11:09:47,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:47,247 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:47,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:47,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1948406895, now seen corresponding path program 2 times [2022-09-16 11:09:47,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:47,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493522206] [2022-09-16 11:09:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:47,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:47,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:47,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493522206] [2022-09-16 11:09:47,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493522206] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:47,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340508281] [2022-09-16 11:09:47,858 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:09:47,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:47,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:47,860 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 11:09:47,860 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 11:09:47,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:09:47,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:47,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:09:47,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:48,039 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 11:09:48,056 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 11:09:48,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:48,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340508281] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:48,057 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:48,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2022-09-16 11:09:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888787461] [2022-09-16 11:09:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:48,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:09:48,058 INFO L87 Difference]: Start difference. First operand 2041 states and 5199 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:48,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:48,146 INFO L93 Difference]: Finished difference Result 2515 states and 6489 transitions. [2022-09-16 11:09:48,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:09:48,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:48,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:48,154 INFO L225 Difference]: With dead ends: 2515 [2022-09-16 11:09:48,154 INFO L226 Difference]: Without dead ends: 2515 [2022-09-16 11:09:48,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:09:48,155 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 58 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:48,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 654 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:48,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2515 states. [2022-09-16 11:09:48,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2515 to 2197. [2022-09-16 11:09:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2197 states, 2188 states have (on average 2.588665447897623) internal successors, (5664), 2196 states have internal predecessors, (5664), 0 states have call successors, (0), 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 11:09:48,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2197 states to 2197 states and 5664 transitions. [2022-09-16 11:09:48,219 INFO L78 Accepts]: Start accepts. Automaton has 2197 states and 5664 transitions. Word has length 95 [2022-09-16 11:09:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:48,219 INFO L495 AbstractCegarLoop]: Abstraction has 2197 states and 5664 transitions. [2022-09-16 11:09:48,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 2197 states and 5664 transitions. [2022-09-16 11:09:48,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:48,221 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:48,221 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] [2022-09-16 11:09:48,251 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 11:09:48,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:09:48,435 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:48,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:48,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1936788405, now seen corresponding path program 3 times [2022-09-16 11:09:48,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:48,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158927765] [2022-09-16 11:09:48,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:48,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:48,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:48,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158927765] [2022-09-16 11:09:48,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158927765] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:48,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650718920] [2022-09-16 11:09:48,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:09:48,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:48,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:48,752 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 11:09:48,753 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 11:09:48,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:09:48,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:48,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:09:48,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:49,008 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:09:49,008 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 11:09:49,024 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 11:09:49,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:49,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650718920] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:49,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:49,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:09:49,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662715219] [2022-09-16 11:09:49,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:49,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:49,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:49,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:49,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:09:49,026 INFO L87 Difference]: Start difference. First operand 2197 states and 5664 transitions. Second operand has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:49,065 INFO L93 Difference]: Finished difference Result 2739 states and 7144 transitions. [2022-09-16 11:09:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:09:49,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:49,072 INFO L225 Difference]: With dead ends: 2739 [2022-09-16 11:09:49,072 INFO L226 Difference]: Without dead ends: 2739 [2022-09-16 11:09:49,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 91 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:09:49,074 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 58 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:49,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 529 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-09-16 11:09:49,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2739 states. [2022-09-16 11:09:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2739 to 2341. [2022-09-16 11:09:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2332 states have (on average 2.6054888507718696) internal successors, (6076), 2340 states have internal predecessors, (6076), 0 states have call successors, (0), 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 11:09:49,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 6076 transitions. [2022-09-16 11:09:49,126 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 6076 transitions. Word has length 95 [2022-09-16 11:09:49,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:49,127 INFO L495 AbstractCegarLoop]: Abstraction has 2341 states and 6076 transitions. [2022-09-16 11:09:49,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.0) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:09:49,127 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 6076 transitions. [2022-09-16 11:09:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:49,128 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:49,129 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] [2022-09-16 11:09:49,155 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 11:09:49,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:09:49,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash 749014191, now seen corresponding path program 4 times [2022-09-16 11:09:49,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:49,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349511743] [2022-09-16 11:09:49,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:49,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:49,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:49,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:49,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:49,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349511743] [2022-09-16 11:09:49,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349511743] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:49,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701786316] [2022-09-16 11:09:49,756 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:09:49,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:49,760 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 11:09:49,783 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 11:09:49,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:09:49,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:49,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:09:49,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:50,244 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 11:09:50,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:50,761 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 11:09:50,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:50,882 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 11:09:51,044 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:09:51,044 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 11:09:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:51,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:51,713 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:51,713 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 29 treesize of output 30 [2022-09-16 11:09:51,722 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:51,723 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 158 treesize of output 146 [2022-09-16 11:09:51,748 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 130 treesize of output 106 [2022-09-16 11:09:51,755 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 106 treesize of output 94 [2022-09-16 11:09:52,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:52,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701786316] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:52,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:52,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-09-16 11:09:52,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836455069] [2022-09-16 11:09:52,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:52,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-16 11:09:52,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:52,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-16 11:09:52,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3177, Unknown=8, NotChecked=0, Total=3422 [2022-09-16 11:09:52,612 INFO L87 Difference]: Start difference. First operand 2341 states and 6076 transitions. Second operand has 59 states, 58 states have (on average 4.189655172413793) internal successors, (243), 59 states have internal predecessors, (243), 0 states have call successors, (0), 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 11:09:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:54,376 INFO L93 Difference]: Finished difference Result 4191 states and 11155 transitions. [2022-09-16 11:09:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-09-16 11:09:54,376 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 4.189655172413793) internal successors, (243), 59 states have internal predecessors, (243), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:54,387 INFO L225 Difference]: With dead ends: 4191 [2022-09-16 11:09:54,388 INFO L226 Difference]: Without dead ends: 4191 [2022-09-16 11:09:54,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=624, Invalid=6174, Unknown=8, NotChecked=0, Total=6806 [2022-09-16 11:09:54,390 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 590 mSDsluCounter, 5052 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 5105 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 544 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:54,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 5105 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 907 Invalid, 0 Unknown, 544 Unchecked, 0.4s Time] [2022-09-16 11:09:54,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2022-09-16 11:09:54,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 2488. [2022-09-16 11:09:54,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2488 states, 2479 states have (on average 2.6232351754739813) internal successors, (6503), 2487 states have internal predecessors, (6503), 0 states have call successors, (0), 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 11:09:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2488 states to 2488 states and 6503 transitions. [2022-09-16 11:09:54,449 INFO L78 Accepts]: Start accepts. Automaton has 2488 states and 6503 transitions. Word has length 95 [2022-09-16 11:09:54,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:54,449 INFO L495 AbstractCegarLoop]: Abstraction has 2488 states and 6503 transitions. [2022-09-16 11:09:54,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 4.189655172413793) internal successors, (243), 59 states have internal predecessors, (243), 0 states have call successors, (0), 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 11:09:54,449 INFO L276 IsEmpty]: Start isEmpty. Operand 2488 states and 6503 transitions. [2022-09-16 11:09:54,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-09-16 11:09:54,451 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:54,451 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:54,476 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-09-16 11:09:54,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:09:54,667 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:54,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:54,668 INFO L85 PathProgramCache]: Analyzing trace with hash 506604634, now seen corresponding path program 1 times [2022-09-16 11:09:54,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:54,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926230647] [2022-09-16 11:09:54,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:54,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926230647] [2022-09-16 11:09:54,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926230647] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857353809] [2022-09-16 11:09:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:54,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:54,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:54,710 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 11:09:54,711 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 11:09:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:54,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:09:54,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:54,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:54,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:55,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857353809] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:55,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:55,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-16 11:09:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511778131] [2022-09-16 11:09:55,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:55,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:09:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:55,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:09:55,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:09:55,108 INFO L87 Difference]: Start difference. First operand 2488 states and 6503 transitions. Second operand has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 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 11:09:55,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:55,512 INFO L93 Difference]: Finished difference Result 4721 states and 12113 transitions. [2022-09-16 11:09:55,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:09:55,513 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 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 95 [2022-09-16 11:09:55,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:55,525 INFO L225 Difference]: With dead ends: 4721 [2022-09-16 11:09:55,525 INFO L226 Difference]: Without dead ends: 4625 [2022-09-16 11:09:55,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 178 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:09:55,527 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 1626 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:55,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 1392 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:09:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2022-09-16 11:09:55,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 3278. [2022-09-16 11:09:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3265 states have (on average 2.6113323124042878) internal successors, (8526), 3277 states have internal predecessors, (8526), 0 states have call successors, (0), 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 11:09:55,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 8526 transitions. [2022-09-16 11:09:55,607 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 8526 transitions. Word has length 95 [2022-09-16 11:09:55,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:55,607 INFO L495 AbstractCegarLoop]: Abstraction has 3278 states and 8526 transitions. [2022-09-16 11:09:55,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.157894736842104) internal successors, (193), 19 states have internal predecessors, (193), 0 states have call successors, (0), 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 11:09:55,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 8526 transitions. [2022-09-16 11:09:55,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-09-16 11:09:55,609 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:55,609 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] [2022-09-16 11:09:55,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:55,824 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,SelfDestructingSolverStorable14 [2022-09-16 11:09:55,825 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:09:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:55,825 INFO L85 PathProgramCache]: Analyzing trace with hash -149299545, now seen corresponding path program 1 times [2022-09-16 11:09:55,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:55,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236938719] [2022-09-16 11:09:55,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:55,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:56,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:56,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:56,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236938719] [2022-09-16 11:09:56,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236938719] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:56,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77695258] [2022-09-16 11:09:56,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:56,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:56,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:56,456 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 11:09:56,457 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 11:09:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:56,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:09:56,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:56,912 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 11:09:57,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:57,439 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 20 treesize of output 22 [2022-09-16 11:09:57,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:09:57,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:09:57,718 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:09:57,718 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 25 treesize of output 12 [2022-09-16 11:09:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:57,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:57,843 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_326 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_326) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 11:09:58,435 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:58,435 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 31 treesize of output 32 [2022-09-16 11:09:58,442 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:09:58,442 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 174 treesize of output 162 [2022-09-16 11:09:58,451 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 73 treesize of output 61 [2022-09-16 11:09:58,455 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 134 treesize of output 110 [2022-09-16 11:09:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77695258] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:59,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:59,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22, 22] total 61 [2022-09-16 11:09:59,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728507702] [2022-09-16 11:09:59,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:59,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-09-16 11:09:59,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:59,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-09-16 11:09:59,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=3443, Unknown=5, NotChecked=118, Total=3782 [2022-09-16 11:09:59,393 INFO L87 Difference]: Start difference. First operand 3278 states and 8526 transitions. Second operand has 62 states, 61 states have (on average 4.032786885245901) internal successors, (246), 62 states have internal predecessors, (246), 0 states have call successors, (0), 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 11:10:01,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:01,202 INFO L93 Difference]: Finished difference Result 4577 states and 11922 transitions. [2022-09-16 11:10:01,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:10:01,203 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 4.032786885245901) internal successors, (246), 62 states have internal predecessors, (246), 0 states have call successors, (0), 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 96 [2022-09-16 11:10:01,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:01,212 INFO L225 Difference]: With dead ends: 4577 [2022-09-16 11:10:01,212 INFO L226 Difference]: Without dead ends: 4444 [2022-09-16 11:10:01,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1586 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=600, Invalid=6371, Unknown=5, NotChecked=164, Total=7140 [2022-09-16 11:10:01,214 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 449 mSDsluCounter, 4281 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 4267 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 511 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:01,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 4267 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 747 Invalid, 0 Unknown, 511 Unchecked, 0.4s Time] [2022-09-16 11:10:01,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4444 states. [2022-09-16 11:10:01,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4444 to 3306. [2022-09-16 11:10:01,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3306 states, 3293 states have (on average 2.6076525964166413) internal successors, (8587), 3305 states have internal predecessors, (8587), 0 states have call successors, (0), 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 11:10:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 8587 transitions. [2022-09-16 11:10:01,293 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 8587 transitions. Word has length 96 [2022-09-16 11:10:01,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:01,294 INFO L495 AbstractCegarLoop]: Abstraction has 3306 states and 8587 transitions. [2022-09-16 11:10:01,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 4.032786885245901) internal successors, (246), 62 states have internal predecessors, (246), 0 states have call successors, (0), 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 11:10:01,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 8587 transitions. [2022-09-16 11:10:01,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-09-16 11:10:01,296 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:01,296 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] [2022-09-16 11:10:01,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:01,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:10:01,509 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:01,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:01,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1104543317, now seen corresponding path program 2 times [2022-09-16 11:10:01,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:01,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668082780] [2022-09-16 11:10:01,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:01,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:01,843 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:01,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:01,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668082780] [2022-09-16 11:10:01,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668082780] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:01,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784555748] [2022-09-16 11:10:01,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:01,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:01,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:01,845 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:01,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:10:01,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:01,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:01,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:10:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:02,134 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:02,134 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 11:10:02,150 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 11:10:02,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:02,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784555748] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:02,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:02,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:10:02,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572437919] [2022-09-16 11:10:02,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:02,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:02,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:02,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:02,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:02,152 INFO L87 Difference]: Start difference. First operand 3306 states and 8587 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:02,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:02,183 INFO L93 Difference]: Finished difference Result 3505 states and 9052 transitions. [2022-09-16 11:10:02,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:02,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-09-16 11:10:02,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:02,188 INFO L225 Difference]: With dead ends: 3505 [2022-09-16 11:10:02,188 INFO L226 Difference]: Without dead ends: 3505 [2022-09-16 11:10:02,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:02,189 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 43 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:02,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 567 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 86 Unchecked, 0.0s Time] [2022-09-16 11:10:02,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2022-09-16 11:10:02,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 3390. [2022-09-16 11:10:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3377 states have (on average 2.6020136215575955) internal successors, (8787), 3389 states have internal predecessors, (8787), 0 states have call successors, (0), 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 11:10:02,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 8787 transitions. [2022-09-16 11:10:02,250 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 8787 transitions. Word has length 96 [2022-09-16 11:10:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:02,250 INFO L495 AbstractCegarLoop]: Abstraction has 3390 states and 8787 transitions. [2022-09-16 11:10:02,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:02,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 8787 transitions. [2022-09-16 11:10:02,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-09-16 11:10:02,252 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:02,252 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] [2022-09-16 11:10:02,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:02,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:10:02,474 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:02,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:02,475 INFO L85 PathProgramCache]: Analyzing trace with hash 561704623, now seen corresponding path program 3 times [2022-09-16 11:10:02,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:02,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142572595] [2022-09-16 11:10:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:02,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:02,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:02,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:02,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142572595] [2022-09-16 11:10:02,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142572595] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:02,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938230358] [2022-09-16 11:10:02,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:10:02,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:02,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:02,823 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:02,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:10:02,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:10:02,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:02,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:02,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:03,110 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:03,111 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 11:10:03,131 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 11:10:03,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:03,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938230358] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:03,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:03,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:10:03,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982764804] [2022-09-16 11:10:03,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:03,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:03,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:03,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:03,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:03,133 INFO L87 Difference]: Start difference. First operand 3390 states and 8787 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:03,180 INFO L93 Difference]: Finished difference Result 3523 states and 9109 transitions. [2022-09-16 11:10:03,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:03,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-09-16 11:10:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:03,190 INFO L225 Difference]: With dead ends: 3523 [2022-09-16 11:10:03,190 INFO L226 Difference]: Without dead ends: 3523 [2022-09-16 11:10:03,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:03,191 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 32 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:03,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 513 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 44 Unchecked, 0.0s Time] [2022-09-16 11:10:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3523 states. [2022-09-16 11:10:03,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3523 to 3390. [2022-09-16 11:10:03,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3390 states, 3377 states have (on average 2.6020136215575955) internal successors, (8787), 3389 states have internal predecessors, (8787), 0 states have call successors, (0), 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 11:10:03,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 8787 transitions. [2022-09-16 11:10:03,261 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 8787 transitions. Word has length 96 [2022-09-16 11:10:03,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:03,261 INFO L495 AbstractCegarLoop]: Abstraction has 3390 states and 8787 transitions. [2022-09-16 11:10:03,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 8787 transitions. [2022-09-16 11:10:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-09-16 11:10:03,263 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:03,263 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] [2022-09-16 11:10:03,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:03,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:03,479 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 271072179, now seen corresponding path program 1 times [2022-09-16 11:10:03,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:03,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978957948] [2022-09-16 11:10:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:03,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:03,813 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:03,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978957948] [2022-09-16 11:10:03,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978957948] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:03,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999030081] [2022-09-16 11:10:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:03,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:03,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:03,815 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:03,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 11:10:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:03,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 39 conjunts are in the unsatisfiable core [2022-09-16 11:10:03,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:03,902 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 11:10:04,096 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:04,096 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 11:10:04,227 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 15 treesize of output 11 [2022-09-16 11:10:04,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:04,706 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 20 treesize of output 22 [2022-09-16 11:10:04,829 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 20 treesize of output 22 [2022-09-16 11:10:04,991 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:04,991 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 25 treesize of output 12 [2022-09-16 11:10:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:05,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:05,599 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:05,599 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 31 treesize of output 32 [2022-09-16 11:10:05,606 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:05,606 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 174 treesize of output 162 [2022-09-16 11:10:05,614 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 146 treesize of output 134 [2022-09-16 11:10:05,617 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 134 treesize of output 110 [2022-09-16 11:10:06,870 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 11:10:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999030081] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:06,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:06,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-09-16 11:10:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338018881] [2022-09-16 11:10:06,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-16 11:10:06,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-16 11:10:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=3178, Unknown=11, NotChecked=0, Total=3422 [2022-09-16 11:10:06,903 INFO L87 Difference]: Start difference. First operand 3390 states and 8787 transitions. Second operand has 59 states, 58 states have (on average 4.241379310344827) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 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 11:10:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:08,283 INFO L93 Difference]: Finished difference Result 3776 states and 9752 transitions. [2022-09-16 11:10:08,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-16 11:10:08,283 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 4.241379310344827) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 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 96 [2022-09-16 11:10:08,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:08,288 INFO L225 Difference]: With dead ends: 3776 [2022-09-16 11:10:08,288 INFO L226 Difference]: Without dead ends: 3776 [2022-09-16 11:10:08,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1656 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=574, Invalid=5892, Unknown=14, NotChecked=0, Total=6480 [2022-09-16 11:10:08,290 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 397 mSDsluCounter, 4034 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 4106 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 298 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:08,290 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [397 Valid, 4106 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 601 Invalid, 0 Unknown, 298 Unchecked, 0.3s Time] [2022-09-16 11:10:08,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-09-16 11:10:08,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3444. [2022-09-16 11:10:08,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3444 states, 3431 states have (on average 2.6065287088312443) internal successors, (8943), 3443 states have internal predecessors, (8943), 0 states have call successors, (0), 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 11:10:08,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3444 states to 3444 states and 8943 transitions. [2022-09-16 11:10:08,336 INFO L78 Accepts]: Start accepts. Automaton has 3444 states and 8943 transitions. Word has length 96 [2022-09-16 11:10:08,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:08,337 INFO L495 AbstractCegarLoop]: Abstraction has 3444 states and 8943 transitions. [2022-09-16 11:10:08,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 4.241379310344827) internal successors, (246), 59 states have internal predecessors, (246), 0 states have call successors, (0), 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 11:10:08,337 INFO L276 IsEmpty]: Start isEmpty. Operand 3444 states and 8943 transitions. [2022-09-16 11:10:08,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-09-16 11:10:08,339 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:08,339 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] [2022-09-16 11:10:08,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:08,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:08,563 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:08,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:08,563 INFO L85 PathProgramCache]: Analyzing trace with hash -89101011, now seen corresponding path program 2 times [2022-09-16 11:10:08,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:08,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033476312] [2022-09-16 11:10:08,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:08,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:09,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033476312] [2022-09-16 11:10:09,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033476312] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:09,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517300470] [2022-09-16 11:10:09,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:09,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:09,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:09,307 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:09,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-16 11:10:09,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:09,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:09,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:09,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:09,490 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 11:10:09,516 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 11:10:09,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:09,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517300470] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:09,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:09,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [23] total 27 [2022-09-16 11:10:09,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641998278] [2022-09-16 11:10:09,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:09,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:09,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:09,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:09,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:10:09,520 INFO L87 Difference]: Start difference. First operand 3444 states and 8943 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:09,619 INFO L93 Difference]: Finished difference Result 5399 states and 14181 transitions. [2022-09-16 11:10:09,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:09,623 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2022-09-16 11:10:09,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:09,632 INFO L225 Difference]: With dead ends: 5399 [2022-09-16 11:10:09,632 INFO L226 Difference]: Without dead ends: 5399 [2022-09-16 11:10:09,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:10:09,633 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 83 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:09,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 571 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2022-09-16 11:10:09,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 4415. [2022-09-16 11:10:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4415 states, 4402 states have (on average 2.668786915038619) internal successors, (11748), 4414 states have internal predecessors, (11748), 0 states have call successors, (0), 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 11:10:09,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 11748 transitions. [2022-09-16 11:10:09,723 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 11748 transitions. Word has length 96 [2022-09-16 11:10:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:09,723 INFO L495 AbstractCegarLoop]: Abstraction has 4415 states and 11748 transitions. [2022-09-16 11:10:09,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 11748 transitions. [2022-09-16 11:10:09,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-09-16 11:10:09,726 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:09,727 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] [2022-09-16 11:10:09,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:09,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:09,952 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:09,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:09,953 INFO L85 PathProgramCache]: Analyzing trace with hash -992923667, now seen corresponding path program 1 times [2022-09-16 11:10:09,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:09,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082233195] [2022-09-16 11:10:09,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:09,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:10,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:10,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:10,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082233195] [2022-09-16 11:10:10,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082233195] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:10,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234934930] [2022-09-16 11:10:10,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:10,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:10,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:10,310 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:10,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-16 11:10:10,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:10,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 39 conjunts are in the unsatisfiable core [2022-09-16 11:10:10,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:10,443 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 11:10:10,636 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:10,637 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 11:10:10,760 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 15 treesize of output 11 [2022-09-16 11:10:11,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:11,217 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 11:10:11,310 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 11:10:11,489 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:11,489 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 11:10:11,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:11,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:12,082 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:12,083 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 29 treesize of output 30 [2022-09-16 11:10:12,091 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:12,091 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 80 treesize of output 76 [2022-09-16 11:10:12,095 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 60 treesize of output 48 [2022-09-16 11:10:12,099 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 26 treesize of output 20 [2022-09-16 11:10:13,234 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 11:10:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:13,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234934930] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:13,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:13,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-09-16 11:10:13,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418226593] [2022-09-16 11:10:13,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:13,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-16 11:10:13,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:13,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-16 11:10:13,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=3178, Unknown=12, NotChecked=0, Total=3422 [2022-09-16 11:10:13,267 INFO L87 Difference]: Start difference. First operand 4415 states and 11748 transitions. Second operand has 59 states, 58 states have (on average 4.344827586206897) internal successors, (252), 59 states have internal predecessors, (252), 0 states have call successors, (0), 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 11:10:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:14,522 INFO L93 Difference]: Finished difference Result 4983 states and 13192 transitions. [2022-09-16 11:10:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:10:14,523 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 4.344827586206897) internal successors, (252), 59 states have internal predecessors, (252), 0 states have call successors, (0), 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 98 [2022-09-16 11:10:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:14,535 INFO L225 Difference]: With dead ends: 4983 [2022-09-16 11:10:14,535 INFO L226 Difference]: Without dead ends: 4948 [2022-09-16 11:10:14,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1466 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=573, Invalid=5421, Unknown=12, NotChecked=0, Total=6006 [2022-09-16 11:10:14,537 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 255 mSDsluCounter, 4310 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 4341 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 321 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:14,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 4341 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 631 Invalid, 0 Unknown, 321 Unchecked, 0.3s Time] [2022-09-16 11:10:14,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2022-09-16 11:10:14,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4520. [2022-09-16 11:10:14,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4520 states, 4507 states have (on average 2.665631240292878) internal successors, (12014), 4519 states have internal predecessors, (12014), 0 states have call successors, (0), 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 11:10:14,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4520 states to 4520 states and 12014 transitions. [2022-09-16 11:10:14,625 INFO L78 Accepts]: Start accepts. Automaton has 4520 states and 12014 transitions. Word has length 98 [2022-09-16 11:10:14,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:14,626 INFO L495 AbstractCegarLoop]: Abstraction has 4520 states and 12014 transitions. [2022-09-16 11:10:14,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 4.344827586206897) internal successors, (252), 59 states have internal predecessors, (252), 0 states have call successors, (0), 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 11:10:14,626 INFO L276 IsEmpty]: Start isEmpty. Operand 4520 states and 12014 transitions. [2022-09-16 11:10:14,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-09-16 11:10:14,629 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:14,629 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] [2022-09-16 11:10:14,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:14,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:14,853 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:14,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1467120523, now seen corresponding path program 1 times [2022-09-16 11:10:14,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:14,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206632326] [2022-09-16 11:10:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:14,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:15,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:15,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206632326] [2022-09-16 11:10:15,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206632326] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:15,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174012410] [2022-09-16 11:10:15,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:15,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:15,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:15,193 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:15,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-16 11:10:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:15,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:10:15,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:15,280 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 11:10:15,461 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:15,461 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 11:10:15,556 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 15 treesize of output 11 [2022-09-16 11:10:15,800 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 11:10:15,848 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 11:10:15,939 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 11:10:15,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:15,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:16,668 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:16,668 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 60 treesize of output 48 [2022-09-16 11:10:16,678 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:10:16,678 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 140 treesize of output 131 [2022-09-16 11:10:16,690 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:10:16,690 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 124 treesize of output 100 [2022-09-16 11:10:16,698 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:10:16,699 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 79 treesize of output 67 [2022-09-16 11:10:17,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:17,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174012410] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:17,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:17,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 18] total 52 [2022-09-16 11:10:17,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891410577] [2022-09-16 11:10:17,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:17,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 11:10:17,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:17,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 11:10:17,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2267, Unknown=31, NotChecked=0, Total=2756 [2022-09-16 11:10:17,164 INFO L87 Difference]: Start difference. First operand 4520 states and 12014 transitions. Second operand has 53 states, 52 states have (on average 4.596153846153846) internal successors, (239), 53 states have internal predecessors, (239), 0 states have call successors, (0), 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 11:10:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:18,496 INFO L93 Difference]: Finished difference Result 5211 states and 13545 transitions. [2022-09-16 11:10:18,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-09-16 11:10:18,496 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 4.596153846153846) internal successors, (239), 53 states have internal predecessors, (239), 0 states have call successors, (0), 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 98 [2022-09-16 11:10:18,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:18,525 INFO L225 Difference]: With dead ends: 5211 [2022-09-16 11:10:18,526 INFO L226 Difference]: Without dead ends: 5211 [2022-09-16 11:10:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1529 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1014, Invalid=4807, Unknown=31, NotChecked=0, Total=5852 [2022-09-16 11:10:18,527 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 1328 mSDsluCounter, 3634 mSDsCounter, 0 mSdLazyCounter, 1126 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 359 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 3556 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1126 Invalid, 0 Unknown, 359 Unchecked, 0.5s Time] [2022-09-16 11:10:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5211 states. [2022-09-16 11:10:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5211 to 4078. [2022-09-16 11:10:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4078 states, 4065 states have (on average 2.6324723247232473) internal successors, (10701), 4077 states have internal predecessors, (10701), 0 states have call successors, (0), 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 11:10:18,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4078 states to 4078 states and 10701 transitions. [2022-09-16 11:10:18,603 INFO L78 Accepts]: Start accepts. Automaton has 4078 states and 10701 transitions. Word has length 98 [2022-09-16 11:10:18,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:18,603 INFO L495 AbstractCegarLoop]: Abstraction has 4078 states and 10701 transitions. [2022-09-16 11:10:18,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 4.596153846153846) internal successors, (239), 53 states have internal predecessors, (239), 0 states have call successors, (0), 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 11:10:18,603 INFO L276 IsEmpty]: Start isEmpty. Operand 4078 states and 10701 transitions. [2022-09-16 11:10:18,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-09-16 11:10:18,605 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:18,606 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] [2022-09-16 11:10:18,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:18,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:18,828 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:18,829 INFO L85 PathProgramCache]: Analyzing trace with hash -463962155, now seen corresponding path program 2 times [2022-09-16 11:10:18,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:18,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524758498] [2022-09-16 11:10:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:18,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:18,902 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 11:10:18,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:18,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524758498] [2022-09-16 11:10:18,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524758498] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:18,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415587872] [2022-09-16 11:10:18,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:18,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:18,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:18,905 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:18,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-09-16 11:10:18,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:18,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:18,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:10:18,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:19,094 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 11:10:19,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:19,187 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 11:10:19,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415587872] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:19,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:19,188 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:10:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437197013] [2022-09-16 11:10:19,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:19,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:10:19,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:19,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:10:19,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:10:19,191 INFO L87 Difference]: Start difference. First operand 4078 states and 10701 transitions. Second operand has 18 states, 17 states have (on average 8.294117647058824) internal successors, (141), 18 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 11:10:19,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:19,635 INFO L93 Difference]: Finished difference Result 16464 states and 44062 transitions. [2022-09-16 11:10:19,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:10:19,636 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 8.294117647058824) internal successors, (141), 18 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 98 [2022-09-16 11:10:19,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:19,667 INFO L225 Difference]: With dead ends: 16464 [2022-09-16 11:10:19,667 INFO L226 Difference]: Without dead ends: 16464 [2022-09-16 11:10:19,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 185 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:10:19,668 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 1624 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:19,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1624 Valid, 1054 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:19,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16464 states. [2022-09-16 11:10:19,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16464 to 4054. [2022-09-16 11:10:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 4042 states have (on average 2.641019297377536) internal successors, (10675), 4053 states have internal predecessors, (10675), 0 states have call successors, (0), 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 11:10:19,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 10675 transitions. [2022-09-16 11:10:19,841 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 10675 transitions. Word has length 98 [2022-09-16 11:10:19,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:19,842 INFO L495 AbstractCegarLoop]: Abstraction has 4054 states and 10675 transitions. [2022-09-16 11:10:19,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 8.294117647058824) internal successors, (141), 18 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 11:10:19,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 10675 transitions. [2022-09-16 11:10:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 11:10:19,845 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:19,846 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] [2022-09-16 11:10:19,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-09-16 11:10:20,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:20,058 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:20,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:20,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1907078759, now seen corresponding path program 1 times [2022-09-16 11:10:20,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:20,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836666613] [2022-09-16 11:10:20,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:20,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:20,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:20,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836666613] [2022-09-16 11:10:20,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836666613] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:20,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574622569] [2022-09-16 11:10:20,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:20,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:20,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:20,790 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:20,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-16 11:10:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:20,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:10:20,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:21,216 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 11:10:21,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:21,723 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 20 treesize of output 22 [2022-09-16 11:10:21,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:21,867 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 20 treesize of output 22 [2022-09-16 11:10:22,006 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:22,006 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 25 treesize of output 12 [2022-09-16 11:10:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:22,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:22,135 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_545 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_545) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 11:10:22,642 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:22,642 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 31 treesize of output 32 [2022-09-16 11:10:22,658 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:22,659 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 174 treesize of output 162 [2022-09-16 11:10:22,663 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 146 treesize of output 134 [2022-09-16 11:10:22,670 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 134 treesize of output 110 [2022-09-16 11:10:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:23,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574622569] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:23,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:23,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-09-16 11:10:23,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93054949] [2022-09-16 11:10:23,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-09-16 11:10:23,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:23,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-09-16 11:10:23,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=251, Invalid=3619, Unknown=40, NotChecked=122, Total=4032 [2022-09-16 11:10:23,621 INFO L87 Difference]: Start difference. First operand 4054 states and 10675 transitions. Second operand has 64 states, 63 states have (on average 4.031746031746032) internal successors, (254), 64 states have internal predecessors, (254), 0 states have call successors, (0), 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 11:10:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:25,528 INFO L93 Difference]: Finished difference Result 5581 states and 14748 transitions. [2022-09-16 11:10:25,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:10:25,529 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 4.031746031746032) internal successors, (254), 64 states have internal predecessors, (254), 0 states have call successors, (0), 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 99 [2022-09-16 11:10:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:25,541 INFO L225 Difference]: With dead ends: 5581 [2022-09-16 11:10:25,542 INFO L226 Difference]: Without dead ends: 5581 [2022-09-16 11:10:25,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 158 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1774 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=670, Invalid=6604, Unknown=40, NotChecked=168, Total=7482 [2022-09-16 11:10:25,543 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 499 mSDsluCounter, 3778 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 520 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:25,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 3786 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 725 Invalid, 0 Unknown, 520 Unchecked, 0.4s Time] [2022-09-16 11:10:25,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2022-09-16 11:10:25,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 4054. [2022-09-16 11:10:25,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 4042 states have (on average 2.641019297377536) internal successors, (10675), 4053 states have internal predecessors, (10675), 0 states have call successors, (0), 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 11:10:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 10675 transitions. [2022-09-16 11:10:25,638 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 10675 transitions. Word has length 99 [2022-09-16 11:10:25,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:25,638 INFO L495 AbstractCegarLoop]: Abstraction has 4054 states and 10675 transitions. [2022-09-16 11:10:25,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 4.031746031746032) internal successors, (254), 64 states have internal predecessors, (254), 0 states have call successors, (0), 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 11:10:25,638 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 10675 transitions. [2022-09-16 11:10:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 11:10:25,640 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:25,641 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] [2022-09-16 11:10:25,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:25,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-09-16 11:10:25,855 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:25,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:25,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2004950229, now seen corresponding path program 2 times [2022-09-16 11:10:25,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:25,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384549481] [2022-09-16 11:10:25,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:25,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:26,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:26,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:26,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384549481] [2022-09-16 11:10:26,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384549481] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:26,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594809070] [2022-09-16 11:10:26,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:26,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:26,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:26,168 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:26,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-16 11:10:26,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:26,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:26,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:26,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:26,501 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:26,502 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 11:10:26,521 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 11:10:26,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:26,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594809070] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:26,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:26,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:10:26,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037221809] [2022-09-16 11:10:26,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:26,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:26,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:26,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:26,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:26,524 INFO L87 Difference]: Start difference. First operand 4054 states and 10675 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:10:26,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:26,567 INFO L93 Difference]: Finished difference Result 4277 states and 11188 transitions. [2022-09-16 11:10:26,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:26,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-09-16 11:10:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:26,576 INFO L225 Difference]: With dead ends: 4277 [2022-09-16 11:10:26,576 INFO L226 Difference]: Without dead ends: 4277 [2022-09-16 11:10:26,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:26,577 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 36 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:26,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 554 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2022-09-16 11:10:26,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4277 states. [2022-09-16 11:10:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4277 to 4062. [2022-09-16 11:10:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4062 states, 4050 states have (on average 2.639753086419753) internal successors, (10691), 4061 states have internal predecessors, (10691), 0 states have call successors, (0), 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 11:10:26,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4062 states to 4062 states and 10691 transitions. [2022-09-16 11:10:26,656 INFO L78 Accepts]: Start accepts. Automaton has 4062 states and 10691 transitions. Word has length 99 [2022-09-16 11:10:26,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:26,657 INFO L495 AbstractCegarLoop]: Abstraction has 4062 states and 10691 transitions. [2022-09-16 11:10:26,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:10:26,657 INFO L276 IsEmpty]: Start isEmpty. Operand 4062 states and 10691 transitions. [2022-09-16 11:10:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 11:10:26,660 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:26,660 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] [2022-09-16 11:10:26,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:26,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-09-16 11:10:26,884 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:26,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:26,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1386650039, now seen corresponding path program 1 times [2022-09-16 11:10:26,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:26,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546461748] [2022-09-16 11:10:26,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:26,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:26,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:27,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:27,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546461748] [2022-09-16 11:10:27,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546461748] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:27,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190146607] [2022-09-16 11:10:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:27,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:27,377 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:27,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-16 11:10:27,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:27,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:10:27,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:27,476 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 11:10:27,710 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:27,711 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 11:10:27,838 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 15 treesize of output 11 [2022-09-16 11:10:28,136 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 11:10:28,197 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 11:10:28,294 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 11:10:28,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:28,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:28,988 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:28,988 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 62 treesize of output 50 [2022-09-16 11:10:28,996 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:10:28,996 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 316 treesize of output 291 [2022-09-16 11:10:29,004 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:10:29,004 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 284 treesize of output 236 [2022-09-16 11:10:29,010 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:10:29,011 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 236 treesize of output 212 [2022-09-16 11:10:29,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:29,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190146607] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:29,392 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:29,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 18] total 52 [2022-09-16 11:10:29,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646064580] [2022-09-16 11:10:29,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:29,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 11:10:29,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:29,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 11:10:29,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=2238, Unknown=31, NotChecked=0, Total=2756 [2022-09-16 11:10:29,394 INFO L87 Difference]: Start difference. First operand 4062 states and 10691 transitions. Second operand has 53 states, 52 states have (on average 4.653846153846154) internal successors, (242), 53 states have internal predecessors, (242), 0 states have call successors, (0), 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 11:10:31,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:31,363 INFO L93 Difference]: Finished difference Result 5279 states and 13735 transitions. [2022-09-16 11:10:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-16 11:10:31,363 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 4.653846153846154) internal successors, (242), 53 states have internal predecessors, (242), 0 states have call successors, (0), 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 99 [2022-09-16 11:10:31,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:31,374 INFO L225 Difference]: With dead ends: 5279 [2022-09-16 11:10:31,374 INFO L226 Difference]: Without dead ends: 5279 [2022-09-16 11:10:31,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1703 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1217, Invalid=5558, Unknown=31, NotChecked=0, Total=6806 [2022-09-16 11:10:31,375 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 1603 mSDsluCounter, 2704 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 397 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:31,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1603 Valid, 2691 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 884 Invalid, 0 Unknown, 397 Unchecked, 0.4s Time] [2022-09-16 11:10:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5279 states. [2022-09-16 11:10:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5279 to 3972. [2022-09-16 11:10:31,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3972 states, 3960 states have (on average 2.639393939393939) internal successors, (10452), 3971 states have internal predecessors, (10452), 0 states have call successors, (0), 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 11:10:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3972 states to 3972 states and 10452 transitions. [2022-09-16 11:10:31,456 INFO L78 Accepts]: Start accepts. Automaton has 3972 states and 10452 transitions. Word has length 99 [2022-09-16 11:10:31,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:31,457 INFO L495 AbstractCegarLoop]: Abstraction has 3972 states and 10452 transitions. [2022-09-16 11:10:31,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 4.653846153846154) internal successors, (242), 53 states have internal predecessors, (242), 0 states have call successors, (0), 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 11:10:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 3972 states and 10452 transitions. [2022-09-16 11:10:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-09-16 11:10:31,460 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:31,460 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] [2022-09-16 11:10:31,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:31,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-09-16 11:10:31,685 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:31,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:31,685 INFO L85 PathProgramCache]: Analyzing trace with hash -900363764, now seen corresponding path program 1 times [2022-09-16 11:10:31,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:31,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220687435] [2022-09-16 11:10:31,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:31,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:31,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:31,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:31,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220687435] [2022-09-16 11:10:31,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220687435] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:31,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:31,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:10:31,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006675922] [2022-09-16 11:10:31,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:31,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:31,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:31,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:31,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:10:31,730 INFO L87 Difference]: Start difference. First operand 3972 states and 10452 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 11:10:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:31,772 INFO L93 Difference]: Finished difference Result 6043 states and 15924 transitions. [2022-09-16 11:10:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:10:31,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-09-16 11:10:31,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:31,786 INFO L225 Difference]: With dead ends: 6043 [2022-09-16 11:10:31,786 INFO L226 Difference]: Without dead ends: 5278 [2022-09-16 11:10:31,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 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 11:10:31,788 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 127 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:31,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 235 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:31,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2022-09-16 11:10:31,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 4658. [2022-09-16 11:10:31,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4658 states, 4648 states have (on average 2.73407917383821) internal successors, (12708), 4657 states have internal predecessors, (12708), 0 states have call successors, (0), 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 11:10:31,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4658 states to 4658 states and 12708 transitions. [2022-09-16 11:10:31,879 INFO L78 Accepts]: Start accepts. Automaton has 4658 states and 12708 transitions. Word has length 102 [2022-09-16 11:10:31,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:31,879 INFO L495 AbstractCegarLoop]: Abstraction has 4658 states and 12708 transitions. [2022-09-16 11:10:31,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 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 11:10:31,879 INFO L276 IsEmpty]: Start isEmpty. Operand 4658 states and 12708 transitions. [2022-09-16 11:10:31,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-09-16 11:10:31,881 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:31,881 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] [2022-09-16 11:10:31,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-09-16 11:10:31,882 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:31,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:31,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1999507916, now seen corresponding path program 1 times [2022-09-16 11:10:31,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:31,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391199920] [2022-09-16 11:10:31,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:31,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:31,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:32,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:32,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:32,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391199920] [2022-09-16 11:10:32,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391199920] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:32,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405242015] [2022-09-16 11:10:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:32,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:32,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:32,229 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:32,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-09-16 11:10:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:32,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:10:32,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:32,668 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 11:10:33,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:33,086 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 11:10:33,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:33,180 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 11:10:33,361 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:33,361 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 11:10:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:33,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:33,978 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:33,979 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 29 treesize of output 30 [2022-09-16 11:10:33,985 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:33,986 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 158 treesize of output 146 [2022-09-16 11:10:33,989 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 130 treesize of output 118 [2022-09-16 11:10:33,994 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 118 treesize of output 94 [2022-09-16 11:10:34,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:34,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405242015] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:34,834 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:34,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-09-16 11:10:34,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485780755] [2022-09-16 11:10:34,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:34,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-16 11:10:34,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:34,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-16 11:10:34,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=3176, Unknown=12, NotChecked=0, Total=3422 [2022-09-16 11:10:34,836 INFO L87 Difference]: Start difference. First operand 4658 states and 12708 transitions. Second operand has 59 states, 58 states have (on average 4.551724137931035) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 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 11:10:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:36,273 INFO L93 Difference]: Finished difference Result 6675 states and 17582 transitions. [2022-09-16 11:10:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:10:36,273 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 58 states have (on average 4.551724137931035) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 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 102 [2022-09-16 11:10:36,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:36,283 INFO L225 Difference]: With dead ends: 6675 [2022-09-16 11:10:36,283 INFO L226 Difference]: Without dead ends: 6634 [2022-09-16 11:10:36,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1582 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=588, Invalid=5720, Unknown=12, NotChecked=0, Total=6320 [2022-09-16 11:10:36,284 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 353 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 4526 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 265 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:36,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 4526 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 735 Invalid, 0 Unknown, 265 Unchecked, 0.3s Time] [2022-09-16 11:10:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6634 states. [2022-09-16 11:10:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6634 to 4634. [2022-09-16 11:10:36,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4634 states, 4624 states have (on average 2.735294117647059) internal successors, (12648), 4633 states have internal predecessors, (12648), 0 states have call successors, (0), 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 11:10:36,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4634 states to 4634 states and 12648 transitions. [2022-09-16 11:10:36,364 INFO L78 Accepts]: Start accepts. Automaton has 4634 states and 12648 transitions. Word has length 102 [2022-09-16 11:10:36,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:36,365 INFO L495 AbstractCegarLoop]: Abstraction has 4634 states and 12648 transitions. [2022-09-16 11:10:36,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 58 states have (on average 4.551724137931035) internal successors, (264), 59 states have internal predecessors, (264), 0 states have call successors, (0), 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 11:10:36,365 INFO L276 IsEmpty]: Start isEmpty. Operand 4634 states and 12648 transitions. [2022-09-16 11:10:36,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-09-16 11:10:36,366 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:36,366 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] [2022-09-16 11:10:36,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:36,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:36,566 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:36,567 INFO L85 PathProgramCache]: Analyzing trace with hash 44429420, now seen corresponding path program 2 times [2022-09-16 11:10:36,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:36,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628986139] [2022-09-16 11:10:36,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:36,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:36,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628986139] [2022-09-16 11:10:36,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628986139] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331297170] [2022-09-16 11:10:36,867 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:36,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:36,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:36,872 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:36,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-09-16 11:10:36,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:36,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:36,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:36,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:37,145 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:37,146 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 11:10:37,160 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 11:10:37,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:37,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331297170] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:37,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:37,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:10:37,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984765661] [2022-09-16 11:10:37,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:37,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:37,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:37,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:37,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:37,161 INFO L87 Difference]: Start difference. First operand 4634 states and 12648 transitions. Second operand has 6 states, 5 states have (on average 20.4) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 11:10:37,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:37,210 INFO L93 Difference]: Finished difference Result 4669 states and 12703 transitions. [2022-09-16 11:10:37,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:37,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.4) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-09-16 11:10:37,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:37,219 INFO L225 Difference]: With dead ends: 4669 [2022-09-16 11:10:37,220 INFO L226 Difference]: Without dead ends: 4628 [2022-09-16 11:10:37,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:37,220 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 22 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:37,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 559 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 53 Unchecked, 0.0s Time] [2022-09-16 11:10:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4628 states. [2022-09-16 11:10:37,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4628 to 4597. [2022-09-16 11:10:37,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4587 states have (on average 2.741007194244604) internal successors, (12573), 4596 states have internal predecessors, (12573), 0 states have call successors, (0), 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 11:10:37,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 12573 transitions. [2022-09-16 11:10:37,294 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 12573 transitions. Word has length 102 [2022-09-16 11:10:37,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:37,294 INFO L495 AbstractCegarLoop]: Abstraction has 4597 states and 12573 transitions. [2022-09-16 11:10:37,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.4) internal successors, (102), 6 states have internal predecessors, (102), 0 states have call successors, (0), 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 11:10:37,294 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 12573 transitions. [2022-09-16 11:10:37,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-09-16 11:10:37,295 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:37,295 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] [2022-09-16 11:10:37,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:37,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-16 11:10:37,502 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:37,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:37,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1955220948, now seen corresponding path program 1 times [2022-09-16 11:10:37,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:37,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131413189] [2022-09-16 11:10:37,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:37,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:37,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:38,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:38,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:38,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131413189] [2022-09-16 11:10:38,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131413189] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:38,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [828172091] [2022-09-16 11:10:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:38,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:38,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:38,216 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:38,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-09-16 11:10:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:38,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:10:38,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:38,618 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 11:10:39,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:39,089 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 20 treesize of output 22 [2022-09-16 11:10:39,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:39,188 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 20 treesize of output 22 [2022-09-16 11:10:39,391 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:39,391 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 25 treesize of output 12 [2022-09-16 11:10:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:39,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:40,205 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:40,205 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 31 treesize of output 32 [2022-09-16 11:10:40,216 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:40,217 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 174 treesize of output 162 [2022-09-16 11:10:40,222 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 73 treesize of output 61 [2022-09-16 11:10:40,226 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 134 treesize of output 110 [2022-09-16 11:10:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:41,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [828172091] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:41,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:41,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 62 [2022-09-16 11:10:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488122892] [2022-09-16 11:10:41,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:41,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-09-16 11:10:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:41,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-09-16 11:10:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=270, Invalid=3627, Unknown=9, NotChecked=0, Total=3906 [2022-09-16 11:10:41,072 INFO L87 Difference]: Start difference. First operand 4597 states and 12573 transitions. Second operand has 63 states, 62 states have (on average 4.096774193548387) internal successors, (254), 63 states have internal predecessors, (254), 0 states have call successors, (0), 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 11:10:42,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:42,736 INFO L93 Difference]: Finished difference Result 5171 states and 13997 transitions. [2022-09-16 11:10:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-09-16 11:10:42,737 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.096774193548387) internal successors, (254), 63 states have internal predecessors, (254), 0 states have call successors, (0), 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 103 [2022-09-16 11:10:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:42,744 INFO L225 Difference]: With dead ends: 5171 [2022-09-16 11:10:42,744 INFO L226 Difference]: Without dead ends: 5109 [2022-09-16 11:10:42,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1783 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=638, Invalid=6493, Unknown=9, NotChecked=0, Total=7140 [2022-09-16 11:10:42,745 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 412 mSDsluCounter, 3750 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 492 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:42,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 3714 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 694 Invalid, 0 Unknown, 492 Unchecked, 0.3s Time] [2022-09-16 11:10:42,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5109 states. [2022-09-16 11:10:42,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5109 to 4597. [2022-09-16 11:10:42,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4597 states, 4587 states have (on average 2.740789186832352) internal successors, (12572), 4596 states have internal predecessors, (12572), 0 states have call successors, (0), 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 11:10:42,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4597 states to 4597 states and 12572 transitions. [2022-09-16 11:10:42,816 INFO L78 Accepts]: Start accepts. Automaton has 4597 states and 12572 transitions. Word has length 103 [2022-09-16 11:10:42,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:42,816 INFO L495 AbstractCegarLoop]: Abstraction has 4597 states and 12572 transitions. [2022-09-16 11:10:42,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.096774193548387) internal successors, (254), 63 states have internal predecessors, (254), 0 states have call successors, (0), 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 11:10:42,816 INFO L276 IsEmpty]: Start isEmpty. Operand 4597 states and 12572 transitions. [2022-09-16 11:10:42,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-09-16 11:10:42,818 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:42,818 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] [2022-09-16 11:10:42,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:43,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:43,026 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:43,027 INFO L85 PathProgramCache]: Analyzing trace with hash 457488758, now seen corresponding path program 2 times [2022-09-16 11:10:43,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:43,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511649546] [2022-09-16 11:10:43,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:43,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:43,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:43,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511649546] [2022-09-16 11:10:43,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511649546] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:43,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185114385] [2022-09-16 11:10:43,308 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:43,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:43,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:43,309 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:43,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-09-16 11:10:43,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:43,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:43,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:43,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:43,597 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:43,597 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 11:10:43,613 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 11:10:43,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:43,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185114385] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:43,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:43,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-09-16 11:10:43,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383580470] [2022-09-16 11:10:43,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:43,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:43,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:43,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:43,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:43,615 INFO L87 Difference]: Start difference. First operand 4597 states and 12572 transitions. Second operand has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 11:10:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:43,654 INFO L93 Difference]: Finished difference Result 4655 states and 12681 transitions. [2022-09-16 11:10:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:43,654 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-09-16 11:10:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:43,662 INFO L225 Difference]: With dead ends: 4655 [2022-09-16 11:10:43,662 INFO L226 Difference]: Without dead ends: 4649 [2022-09-16 11:10:43,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:10:43,662 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 21 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:43,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 437 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-09-16 11:10:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2022-09-16 11:10:43,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4641. [2022-09-16 11:10:43,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4641 states, 4631 states have (on average 2.733750809760311) internal successors, (12660), 4640 states have internal predecessors, (12660), 0 states have call successors, (0), 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 11:10:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4641 states to 4641 states and 12660 transitions. [2022-09-16 11:10:43,744 INFO L78 Accepts]: Start accepts. Automaton has 4641 states and 12660 transitions. Word has length 103 [2022-09-16 11:10:43,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:43,744 INFO L495 AbstractCegarLoop]: Abstraction has 4641 states and 12660 transitions. [2022-09-16 11:10:43,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 11:10:43,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4641 states and 12660 transitions. [2022-09-16 11:10:43,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-09-16 11:10:43,745 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:43,745 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] [2022-09-16 11:10:43,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-09-16 11:10:43,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-09-16 11:10:43,946 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:43,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:43,947 INFO L85 PathProgramCache]: Analyzing trace with hash -360189002, now seen corresponding path program 3 times [2022-09-16 11:10:43,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:43,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801643624] [2022-09-16 11:10:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:43,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:44,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:44,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801643624] [2022-09-16 11:10:44,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801643624] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:44,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295023347] [2022-09-16 11:10:44,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:10:44,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:44,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:44,465 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:44,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-09-16 11:10:44,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:10:44,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:44,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:44,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:44,668 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 11:10:44,688 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 11:10:44,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:44,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295023347] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:44,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:44,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2022-09-16 11:10:44,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201469827] [2022-09-16 11:10:44,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:44,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:44,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:44,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:44,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:10:44,690 INFO L87 Difference]: Start difference. First operand 4641 states and 12660 transitions. Second operand has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 11:10:44,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:44,752 INFO L93 Difference]: Finished difference Result 4661 states and 12689 transitions. [2022-09-16 11:10:44,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:44,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-09-16 11:10:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:44,759 INFO L225 Difference]: With dead ends: 4661 [2022-09-16 11:10:44,759 INFO L226 Difference]: Without dead ends: 4490 [2022-09-16 11:10:44,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:10:44,760 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 25 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:44,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 527 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4490 states. [2022-09-16 11:10:44,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4490 to 4490. [2022-09-16 11:10:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4480 states have (on average 2.7598214285714286) internal successors, (12364), 4489 states have internal predecessors, (12364), 0 states have call successors, (0), 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 11:10:44,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 12364 transitions. [2022-09-16 11:10:44,821 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 12364 transitions. Word has length 103 [2022-09-16 11:10:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:44,822 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 12364 transitions. [2022-09-16 11:10:44,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 11:10:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 12364 transitions. [2022-09-16 11:10:44,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-09-16 11:10:44,823 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:44,823 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:44,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:45,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:45,037 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:45,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:45,038 INFO L85 PathProgramCache]: Analyzing trace with hash -73640863, now seen corresponding path program 4 times [2022-09-16 11:10:45,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:45,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112542612] [2022-09-16 11:10:45,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:45,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:45,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112542612] [2022-09-16 11:10:45,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112542612] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:45,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478135194] [2022-09-16 11:10:45,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:10:45,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:45,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:45,981 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:45,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-09-16 11:10:46,066 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:10:46,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:46,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:10:46,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:46,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:46,734 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 11:10:46,832 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 11:10:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:46,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:47,040 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:47,040 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 11:10:47,042 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 11:10:48,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:48,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478135194] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:48,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:48,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 20, 20] total 62 [2022-09-16 11:10:48,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945011639] [2022-09-16 11:10:48,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:48,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-09-16 11:10:48,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:48,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-09-16 11:10:48,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=3591, Unknown=17, NotChecked=0, Total=3906 [2022-09-16 11:10:48,296 INFO L87 Difference]: Start difference. First operand 4490 states and 12364 transitions. Second operand has 63 states, 62 states have (on average 4.32258064516129) internal successors, (268), 63 states have internal predecessors, (268), 0 states have call successors, (0), 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 11:10:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:51,582 INFO L93 Difference]: Finished difference Result 6133 states and 16545 transitions. [2022-09-16 11:10:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-09-16 11:10:51,582 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 4.32258064516129) internal successors, (268), 63 states have internal predecessors, (268), 0 states have call successors, (0), 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 104 [2022-09-16 11:10:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:51,592 INFO L225 Difference]: With dead ends: 6133 [2022-09-16 11:10:51,592 INFO L226 Difference]: Without dead ends: 5995 [2022-09-16 11:10:51,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2072 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1315, Invalid=9172, Unknown=19, NotChecked=0, Total=10506 [2022-09-16 11:10:51,593 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 2158 mSDsluCounter, 4468 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 95 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:51,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 4412 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1744 Invalid, 0 Unknown, 95 Unchecked, 0.8s Time] [2022-09-16 11:10:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2022-09-16 11:10:51,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 4565. [2022-09-16 11:10:51,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4555 states have (on average 2.7481888035126234) internal successors, (12518), 4564 states have internal predecessors, (12518), 0 states have call successors, (0), 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 11:10:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 12518 transitions. [2022-09-16 11:10:51,662 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 12518 transitions. Word has length 104 [2022-09-16 11:10:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:51,662 INFO L495 AbstractCegarLoop]: Abstraction has 4565 states and 12518 transitions. [2022-09-16 11:10:51,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 4.32258064516129) internal successors, (268), 63 states have internal predecessors, (268), 0 states have call successors, (0), 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 11:10:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 12518 transitions. [2022-09-16 11:10:51,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-09-16 11:10:51,663 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:51,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:51,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-09-16 11:10:51,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:51,864 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:51,865 INFO L85 PathProgramCache]: Analyzing trace with hash 458981149, now seen corresponding path program 5 times [2022-09-16 11:10:51,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:51,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908415695] [2022-09-16 11:10:51,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:51,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:53,140 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908415695] [2022-09-16 11:10:53,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908415695] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368788410] [2022-09-16 11:10:53,141 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:10:53,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:53,142 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:53,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-09-16 11:10:53,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-09-16 11:10:53,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:53,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 34 conjunts are in the unsatisfiable core [2022-09-16 11:10:53,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:53,241 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 11:10:53,335 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:53,336 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 11:10:53,658 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 11:10:53,741 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 11:10:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:53,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:53,876 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_798 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_798) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483648)) is different from false [2022-09-16 11:10:53,887 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:53,887 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 11:10:53,895 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 11:10:54,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:54,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368788410] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:54,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:10:54,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26, 14] total 46 [2022-09-16 11:10:54,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313387073] [2022-09-16 11:10:54,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:54,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:10:54,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:54,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:10:54,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1929, Unknown=1, NotChecked=88, Total=2162 [2022-09-16 11:10:54,177 INFO L87 Difference]: Start difference. First operand 4565 states and 12518 transitions. Second operand has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:10:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:54,446 INFO L93 Difference]: Finished difference Result 5343 states and 14604 transitions. [2022-09-16 11:10:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:10:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 104 [2022-09-16 11:10:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:54,454 INFO L225 Difference]: With dead ends: 5343 [2022-09-16 11:10:54,454 INFO L226 Difference]: Without dead ends: 5343 [2022-09-16 11:10:54,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 186 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=184, Invalid=2575, Unknown=1, NotChecked=102, Total=2862 [2022-09-16 11:10:54,455 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 165 mSDsluCounter, 1345 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:54,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1458 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 204 Unchecked, 0.1s Time] [2022-09-16 11:10:54,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2022-09-16 11:10:54,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5207. [2022-09-16 11:10:54,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5207 states, 5197 states have (on average 2.7458148932076196) internal successors, (14270), 5206 states have internal predecessors, (14270), 0 states have call successors, (0), 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 11:10:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5207 states to 5207 states and 14270 transitions. [2022-09-16 11:10:54,560 INFO L78 Accepts]: Start accepts. Automaton has 5207 states and 14270 transitions. Word has length 104 [2022-09-16 11:10:54,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:54,561 INFO L495 AbstractCegarLoop]: Abstraction has 5207 states and 14270 transitions. [2022-09-16 11:10:54,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:10:54,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5207 states and 14270 transitions. [2022-09-16 11:10:54,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-09-16 11:10:54,562 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:54,562 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:54,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:54,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:54,773 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:54,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash -665815961, now seen corresponding path program 6 times [2022-09-16 11:10:54,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:54,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417012892] [2022-09-16 11:10:54,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:54,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:55,897 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:55,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417012892] [2022-09-16 11:10:55,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417012892] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:55,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518958400] [2022-09-16 11:10:55,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:10:55,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:55,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:55,899 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:55,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-09-16 11:10:55,984 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2022-09-16 11:10:55,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:55,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 26 conjunts are in the unsatisfiable core [2022-09-16 11:10:55,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:55,989 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 11:10:56,079 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:56,079 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 11:10:56,302 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 11:10:56,361 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 11:10:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:56,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:56,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518958400] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:56,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:56,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26] total 37 [2022-09-16 11:10:56,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747886041] [2022-09-16 11:10:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:56,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:10:56,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:10:56,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1305, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:10:56,388 INFO L87 Difference]: Start difference. First operand 5207 states and 14270 transitions. Second operand has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:10:56,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:56,672 INFO L93 Difference]: Finished difference Result 5984 states and 16388 transitions. [2022-09-16 11:10:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:10:56,673 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 104 [2022-09-16 11:10:56,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:56,682 INFO L225 Difference]: With dead ends: 5984 [2022-09-16 11:10:56,683 INFO L226 Difference]: Without dead ends: 5984 [2022-09-16 11:10:56,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=172, Invalid=2084, Unknown=0, NotChecked=0, Total=2256 [2022-09-16 11:10:56,684 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 355 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:56,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1151 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5984 states. [2022-09-16 11:10:56,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5984 to 4817. [2022-09-16 11:10:56,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4817 states, 4807 states have (on average 2.7430830039525693) internal successors, (13186), 4816 states have internal predecessors, (13186), 0 states have call successors, (0), 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 11:10:56,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4817 states to 4817 states and 13186 transitions. [2022-09-16 11:10:56,787 INFO L78 Accepts]: Start accepts. Automaton has 4817 states and 13186 transitions. Word has length 104 [2022-09-16 11:10:56,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:56,788 INFO L495 AbstractCegarLoop]: Abstraction has 4817 states and 13186 transitions. [2022-09-16 11:10:56,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.916666666666667) internal successors, (95), 13 states have internal predecessors, (95), 0 states have call successors, (0), 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 11:10:56,788 INFO L276 IsEmpty]: Start isEmpty. Operand 4817 states and 13186 transitions. [2022-09-16 11:10:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-09-16 11:10:56,789 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:56,789 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:56,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:57,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-09-16 11:10:57,001 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1343514309, now seen corresponding path program 3 times [2022-09-16 11:10:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:57,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596074140] [2022-09-16 11:10:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:58,206 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:58,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:58,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596074140] [2022-09-16 11:10:58,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596074140] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:58,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812608779] [2022-09-16 11:10:58,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:10:58,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:58,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:58,208 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:58,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-09-16 11:10:58,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:10:58,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:58,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2022-09-16 11:10:58,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:58,301 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 11:10:58,414 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:10:58,414 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 11:10:58,680 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 11:10:58,740 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 11:10:58,793 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:58,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:58,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812608779] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:58,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:58,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [26] total 37 [2022-09-16 11:10:58,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328409037] [2022-09-16 11:10:58,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:58,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:10:58,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:58,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:10:58,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2022-09-16 11:10:58,795 INFO L87 Difference]: Start difference. First operand 4817 states and 13186 transitions. Second operand has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:59,186 INFO L93 Difference]: Finished difference Result 5915 states and 16109 transitions. [2022-09-16 11:10:59,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:10:59,186 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 105 [2022-09-16 11:10:59,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:59,196 INFO L225 Difference]: With dead ends: 5915 [2022-09-16 11:10:59,197 INFO L226 Difference]: Without dead ends: 5915 [2022-09-16 11:10:59,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=176, Invalid=2080, Unknown=0, NotChecked=0, Total=2256 [2022-09-16 11:10:59,197 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 286 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:59,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 1380 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:10:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5915 states. [2022-09-16 11:10:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5915 to 4100. [2022-09-16 11:10:59,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4100 states, 4090 states have (on average 2.7400977995110023) internal successors, (11207), 4099 states have internal predecessors, (11207), 0 states have call successors, (0), 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 11:10:59,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4100 states to 4100 states and 11207 transitions. [2022-09-16 11:10:59,285 INFO L78 Accepts]: Start accepts. Automaton has 4100 states and 11207 transitions. Word has length 105 [2022-09-16 11:10:59,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:59,286 INFO L495 AbstractCegarLoop]: Abstraction has 4100 states and 11207 transitions. [2022-09-16 11:10:59,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:59,286 INFO L276 IsEmpty]: Start isEmpty. Operand 4100 states and 11207 transitions. [2022-09-16 11:10:59,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-09-16 11:10:59,287 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:59,287 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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 11:10:59,304 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-09-16 11:10:59,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-09-16 11:10:59,488 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:10:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash 686275698, now seen corresponding path program 1 times [2022-09-16 11:10:59,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:59,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893953887] [2022-09-16 11:10:59,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:59,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:59,525 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:59,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:59,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893953887] [2022-09-16 11:10:59,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893953887] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:59,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722248721] [2022-09-16 11:10:59,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:59,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:59,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:59,527 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:59,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-09-16 11:10:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:59,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:59,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:59,654 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:59,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:59,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722248721] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:59,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:59,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:10:59,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471000822] [2022-09-16 11:10:59,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:59,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:59,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:59,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:59,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:59,656 INFO L87 Difference]: Start difference. First operand 4100 states and 11207 transitions. Second operand has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:59,741 INFO L93 Difference]: Finished difference Result 3948 states and 10742 transitions. [2022-09-16 11:10:59,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:59,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 105 [2022-09-16 11:10:59,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:59,750 INFO L225 Difference]: With dead ends: 3948 [2022-09-16 11:10:59,751 INFO L226 Difference]: Without dead ends: 3948 [2022-09-16 11:10:59,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 103 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 11:10:59,752 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 139 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:59,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 597 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3948 states. [2022-09-16 11:10:59,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3948 to 3910. [2022-09-16 11:10:59,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3910 states, 3904 states have (on average 2.7328381147540983) internal successors, (10669), 3909 states have internal predecessors, (10669), 0 states have call successors, (0), 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 11:10:59,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3910 states to 3910 states and 10669 transitions. [2022-09-16 11:10:59,825 INFO L78 Accepts]: Start accepts. Automaton has 3910 states and 10669 transitions. Word has length 105 [2022-09-16 11:10:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:59,825 INFO L495 AbstractCegarLoop]: Abstraction has 3910 states and 10669 transitions. [2022-09-16 11:10:59,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.2) internal successors, (96), 6 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:10:59,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3910 states and 10669 transitions. [2022-09-16 11:10:59,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-09-16 11:10:59,827 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:59,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:59,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:00,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:00,049 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:00,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:00,049 INFO L85 PathProgramCache]: Analyzing trace with hash -578322853, now seen corresponding path program 3 times [2022-09-16 11:11:00,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:00,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165454526] [2022-09-16 11:11:00,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:00,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:01,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165454526] [2022-09-16 11:11:01,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165454526] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26192646] [2022-09-16 11:11:01,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:11:01,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:01,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:01,068 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:01,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-09-16 11:11:01,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:11:01,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:01,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:11:01,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:01,290 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 11:11:01,333 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:11:01,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:01,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26192646] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:01,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:01,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2022-09-16 11:11:01,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295697215] [2022-09-16 11:11:01,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:01,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:11:01,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:01,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:11:01,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-09-16 11:11:01,335 INFO L87 Difference]: Start difference. First operand 3910 states and 10669 transitions. Second operand has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:11:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:01,386 INFO L93 Difference]: Finished difference Result 3938 states and 10714 transitions. [2022-09-16 11:11:01,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:11:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 108 [2022-09-16 11:11:01,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:01,392 INFO L225 Difference]: With dead ends: 3938 [2022-09-16 11:11:01,392 INFO L226 Difference]: Without dead ends: 3856 [2022-09-16 11:11:01,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-09-16 11:11:01,393 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 25 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:01,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 477 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:11:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2022-09-16 11:11:01,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 3856. [2022-09-16 11:11:01,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3856 states, 3850 states have (on average 2.7381818181818183) internal successors, (10542), 3855 states have internal predecessors, (10542), 0 states have call successors, (0), 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 11:11:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3856 states to 3856 states and 10542 transitions. [2022-09-16 11:11:01,446 INFO L78 Accepts]: Start accepts. Automaton has 3856 states and 10542 transitions. Word has length 108 [2022-09-16 11:11:01,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:01,446 INFO L495 AbstractCegarLoop]: Abstraction has 3856 states and 10542 transitions. [2022-09-16 11:11:01,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 19.8) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 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 11:11:01,446 INFO L276 IsEmpty]: Start isEmpty. Operand 3856 states and 10542 transitions. [2022-09-16 11:11:01,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:11:01,447 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:01,448 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-09-16 11:11:01,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:01,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-09-16 11:11:01,648 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:01,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:01,649 INFO L85 PathProgramCache]: Analyzing trace with hash 743723125, now seen corresponding path program 2 times [2022-09-16 11:11:01,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:01,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741508291] [2022-09-16 11:11:01,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:01,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:01,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741508291] [2022-09-16 11:11:01,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741508291] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209436164] [2022-09-16 11:11:01,740 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:01,740 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:01,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:01,741 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:01,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-09-16 11:11:01,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:01,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:01,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:11:01,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:11:01,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:02,065 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:11:02,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209436164] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:02,066 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:02,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2022-09-16 11:11:02,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741209881] [2022-09-16 11:11:02,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:02,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:11:02,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:02,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:11:02,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:11:02,067 INFO L87 Difference]: Start difference. First operand 3856 states and 10542 transitions. Second operand has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 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 11:11:02,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:02,548 INFO L93 Difference]: Finished difference Result 6623 states and 17846 transitions. [2022-09-16 11:11:02,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:11:02,549 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 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 112 [2022-09-16 11:11:02,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:02,558 INFO L225 Difference]: With dead ends: 6623 [2022-09-16 11:11:02,559 INFO L226 Difference]: Without dead ends: 6023 [2022-09-16 11:11:02,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 217 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=343, Invalid=1217, Unknown=0, NotChecked=0, Total=1560 [2022-09-16 11:11:02,559 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 936 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:02,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1881 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:11:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6023 states. [2022-09-16 11:11:02,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6023 to 3646. [2022-09-16 11:11:02,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3646 states, 3640 states have (on average 2.6527472527472526) internal successors, (9656), 3645 states have internal predecessors, (9656), 0 states have call successors, (0), 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 11:11:02,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3646 states to 3646 states and 9656 transitions. [2022-09-16 11:11:02,619 INFO L78 Accepts]: Start accepts. Automaton has 3646 states and 9656 transitions. Word has length 112 [2022-09-16 11:11:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:02,620 INFO L495 AbstractCegarLoop]: Abstraction has 3646 states and 9656 transitions. [2022-09-16 11:11:02,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.375) internal successors, (182), 16 states have internal predecessors, (182), 0 states have call successors, (0), 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 11:11:02,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3646 states and 9656 transitions. [2022-09-16 11:11:02,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-09-16 11:11:02,621 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:02,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:02,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:02,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-09-16 11:11:02,822 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:02,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1566440473, now seen corresponding path program 4 times [2022-09-16 11:11:02,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:02,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212734374] [2022-09-16 11:11:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:02,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:04,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212734374] [2022-09-16 11:11:04,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212734374] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:04,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587947297] [2022-09-16 11:11:04,487 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:11:04,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:04,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:04,488 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:04,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-09-16 11:11:04,605 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:11:04,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:04,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:11:04,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:05,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:05,125 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 11:11:05,189 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 11:11:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:11:05,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:05,313 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_967 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_967) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 11:11:05,328 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:05,329 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 11:11:05,331 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 11:11:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:11:05,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587947297] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:05,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:11:05,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [27, 16] total 53 [2022-09-16 11:11:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663241358] [2022-09-16 11:11:05,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:05,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:05,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:05,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2598, Unknown=1, NotChecked=102, Total=2862 [2022-09-16 11:11:05,722 INFO L87 Difference]: Start difference. First operand 3646 states and 9656 transitions. Second operand has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:11:06,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:06,154 INFO L93 Difference]: Finished difference Result 5261 states and 14007 transitions. [2022-09-16 11:11:06,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:11:06,155 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 114 [2022-09-16 11:11:06,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:06,162 INFO L225 Difference]: With dead ends: 5261 [2022-09-16 11:11:06,162 INFO L226 Difference]: Without dead ends: 5143 [2022-09-16 11:11:06,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=235, Invalid=3800, Unknown=1, NotChecked=124, Total=4160 [2022-09-16 11:11:06,163 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 245 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:06,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 1284 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 378 Invalid, 0 Unknown, 132 Unchecked, 0.1s Time] [2022-09-16 11:11:06,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5143 states. [2022-09-16 11:11:06,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5143 to 3650. [2022-09-16 11:11:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3650 states, 3644 states have (on average 2.6517563117453347) internal successors, (9663), 3649 states have internal predecessors, (9663), 0 states have call successors, (0), 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 11:11:06,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 9663 transitions. [2022-09-16 11:11:06,215 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 9663 transitions. Word has length 114 [2022-09-16 11:11:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:06,216 INFO L495 AbstractCegarLoop]: Abstraction has 3650 states and 9663 transitions. [2022-09-16 11:11:06,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:11:06,216 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 9663 transitions. [2022-09-16 11:11:06,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-09-16 11:11:06,217 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:06,217 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:06,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:06,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-09-16 11:11:06,418 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:06,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:06,418 INFO L85 PathProgramCache]: Analyzing trace with hash 930639151, now seen corresponding path program 5 times [2022-09-16 11:11:06,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:06,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052960103] [2022-09-16 11:11:06,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:06,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:07,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052960103] [2022-09-16 11:11:07,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052960103] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:07,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701294090] [2022-09-16 11:11:07,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:11:07,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:07,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:07,745 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:07,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-09-16 11:11:07,850 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:11:07,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:07,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 27 conjunts are in the unsatisfiable core [2022-09-16 11:11:07,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:08,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:08,269 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 11:11:08,332 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 11:11:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-09-16 11:11:08,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:08,451 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1000 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1000) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 11:11:08,464 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:08,464 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 11:11:08,471 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 11:11:08,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:11:08,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701294090] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:08,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:11:08,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25, 14] total 49 [2022-09-16 11:11:08,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986137106] [2022-09-16 11:11:08,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:08,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:08,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:08,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:08,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=2202, Unknown=1, NotChecked=94, Total=2450 [2022-09-16 11:11:08,895 INFO L87 Difference]: Start difference. First operand 3650 states and 9663 transitions. Second operand has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:11:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:09,346 INFO L93 Difference]: Finished difference Result 5240 states and 13949 transitions. [2022-09-16 11:11:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:11:09,347 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 114 [2022-09-16 11:11:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:09,354 INFO L225 Difference]: With dead ends: 5240 [2022-09-16 11:11:09,354 INFO L226 Difference]: Without dead ends: 5122 [2022-09-16 11:11:09,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 827 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=227, Invalid=3316, Unknown=1, NotChecked=116, Total=3660 [2022-09-16 11:11:09,355 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 246 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:09,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1284 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 378 Invalid, 0 Unknown, 160 Unchecked, 0.2s Time] [2022-09-16 11:11:09,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5122 states. [2022-09-16 11:11:09,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5122 to 3625. [2022-09-16 11:11:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3619 states have (on average 2.6521138436032055) internal successors, (9598), 3624 states have internal predecessors, (9598), 0 states have call successors, (0), 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 11:11:09,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 9598 transitions. [2022-09-16 11:11:09,406 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 9598 transitions. Word has length 114 [2022-09-16 11:11:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:09,407 INFO L495 AbstractCegarLoop]: Abstraction has 3625 states and 9598 transitions. [2022-09-16 11:11:09,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.0) internal successors, (96), 13 states have internal predecessors, (96), 0 states have call successors, (0), 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 11:11:09,407 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 9598 transitions. [2022-09-16 11:11:09,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-09-16 11:11:09,408 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:09,409 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:09,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-09-16 11:11:09,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:09,609 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:09,610 INFO L85 PathProgramCache]: Analyzing trace with hash 68642023, now seen corresponding path program 1 times [2022-09-16 11:11:09,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:09,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744437973] [2022-09-16 11:11:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:09,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:11,215 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:11,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:11,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744437973] [2022-09-16 11:11:11,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744437973] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:11,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575265814] [2022-09-16 11:11:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:11,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:11,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:11,216 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:11,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-09-16 11:11:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:11,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 27 conjunts are in the unsatisfiable core [2022-09-16 11:11:11,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:11,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:11,749 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 11:11:11,814 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 11:11:11,844 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-09-16 11:11:11,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:11,937 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1033 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1033) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset))))) is different from false [2022-09-16 11:11:11,950 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:11,950 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 11:11:11,952 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 11:11:12,347 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:11:12,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575265814] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:12,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-16 11:11:12,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [28, 14] total 52 [2022-09-16 11:11:12,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995053693] [2022-09-16 11:11:12,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:12,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:12,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:12,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=2491, Unknown=1, NotChecked=100, Total=2756 [2022-09-16 11:11:12,349 INFO L87 Difference]: Start difference. First operand 3625 states and 9598 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:11:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:12,784 INFO L93 Difference]: Finished difference Result 5219 states and 13892 transitions. [2022-09-16 11:11:12,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:11:12,784 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:11:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:12,791 INFO L225 Difference]: With dead ends: 5219 [2022-09-16 11:11:12,791 INFO L226 Difference]: Without dead ends: 5126 [2022-09-16 11:11:12,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=238, Invalid=3671, Unknown=1, NotChecked=122, Total=4032 [2022-09-16 11:11:12,792 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 289 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:12,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1276 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 373 Invalid, 0 Unknown, 129 Unchecked, 0.1s Time] [2022-09-16 11:11:12,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5126 states. [2022-09-16 11:11:12,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5126 to 3633. [2022-09-16 11:11:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3627 states have (on average 2.6501240694789083) internal successors, (9612), 3632 states have internal predecessors, (9612), 0 states have call successors, (0), 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 11:11:12,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 9612 transitions. [2022-09-16 11:11:12,835 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 9612 transitions. Word has length 115 [2022-09-16 11:11:12,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:12,836 INFO L495 AbstractCegarLoop]: Abstraction has 3633 states and 9612 transitions. [2022-09-16 11:11:12,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:11:12,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 9612 transitions. [2022-09-16 11:11:12,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-09-16 11:11:12,837 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:12,837 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:12,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:13,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:13,039 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:13,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:13,040 INFO L85 PathProgramCache]: Analyzing trace with hash 168699039, now seen corresponding path program 2 times [2022-09-16 11:11:13,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:13,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094132095] [2022-09-16 11:11:13,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:13,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:13,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:14,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094132095] [2022-09-16 11:11:14,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094132095] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:14,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532973110] [2022-09-16 11:11:14,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:14,715 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:14,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-09-16 11:11:14,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:14,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:14,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjunts are in the unsatisfiable core [2022-09-16 11:11:14,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:14,829 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 11:11:14,925 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:11:14,926 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 11:11:15,197 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 11:11:15,266 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 11:11:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:11:15,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:15,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532973110] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:15,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [29] total 40 [2022-09-16 11:11:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833774413] [2022-09-16 11:11:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:15,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:15,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1533, Unknown=0, NotChecked=0, Total=1640 [2022-09-16 11:11:15,300 INFO L87 Difference]: Start difference. First operand 3633 states and 9612 transitions. Second operand has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:11:15,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:15,603 INFO L93 Difference]: Finished difference Result 3648 states and 9632 transitions. [2022-09-16 11:11:15,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-09-16 11:11:15,603 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:11:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:15,608 INFO L225 Difference]: With dead ends: 3648 [2022-09-16 11:11:15,609 INFO L226 Difference]: Without dead ends: 3522 [2022-09-16 11:11:15,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=178, Invalid=2372, Unknown=0, NotChecked=0, Total=2550 [2022-09-16 11:11:15,610 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 246 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:15,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 1093 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:11:15,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3522 states. [2022-09-16 11:11:15,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3522 to 3522. [2022-09-16 11:11:15,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3522 states, 3516 states have (on average 2.6649601820250286) internal successors, (9370), 3521 states have internal predecessors, (9370), 0 states have call successors, (0), 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 11:11:15,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3522 states to 3522 states and 9370 transitions. [2022-09-16 11:11:15,656 INFO L78 Accepts]: Start accepts. Automaton has 3522 states and 9370 transitions. Word has length 115 [2022-09-16 11:11:15,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:15,657 INFO L495 AbstractCegarLoop]: Abstraction has 3522 states and 9370 transitions. [2022-09-16 11:11:15,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 8.083333333333334) internal successors, (97), 13 states have internal predecessors, (97), 0 states have call successors, (0), 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 11:11:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3522 states and 9370 transitions. [2022-09-16 11:11:15,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:11:15,660 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:15,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:15,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:15,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-09-16 11:11:15,861 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:15,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:15,861 INFO L85 PathProgramCache]: Analyzing trace with hash 970118917, now seen corresponding path program 1 times [2022-09-16 11:11:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:15,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278940777] [2022-09-16 11:11:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:16,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:16,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278940777] [2022-09-16 11:11:16,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278940777] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:16,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004062635] [2022-09-16 11:11:16,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:16,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:16,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:16,508 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:16,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-09-16 11:11:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:16,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 52 conjunts are in the unsatisfiable core [2022-09-16 11:11:16,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:17,035 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 11:11:17,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 28 treesize of output 27 [2022-09-16 11:11:21,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:21,755 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 19 treesize of output 21 [2022-09-16 11:11:22,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:22,085 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 30 treesize of output 30 [2022-09-16 11:11:22,460 INFO L356 Elim1Store]: treesize reduction 60, result has 10.4 percent of original size [2022-09-16 11:11:22,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 19 [2022-09-16 11:11:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:22,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:22,717 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1101 (Array Int Int))) (< (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1101) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) 2147483648)) is different from false [2022-09-16 11:11:24,274 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:24,275 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 2 case distinctions, treesize of input 110 treesize of output 75 [2022-09-16 11:11:24,301 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:24,302 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 181 [2022-09-16 11:11:24,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 63 [2022-09-16 11:11:24,330 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:24,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 69 [2022-09-16 11:11:26,487 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:26,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004062635] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:26,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:26,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 28] total 77 [2022-09-16 11:11:26,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413280922] [2022-09-16 11:11:26,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:26,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-09-16 11:11:26,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-09-16 11:11:26,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=5517, Unknown=17, NotChecked=150, Total=6006 [2022-09-16 11:11:26,489 INFO L87 Difference]: Start difference. First operand 3522 states and 9370 transitions. Second operand has 78 states, 77 states have (on average 4.090909090909091) internal successors, (315), 78 states have internal predecessors, (315), 0 states have call successors, (0), 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 11:11:29,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:29,777 INFO L93 Difference]: Finished difference Result 4938 states and 13114 transitions. [2022-09-16 11:11:29,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-09-16 11:11:29,778 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 77 states have (on average 4.090909090909091) internal successors, (315), 78 states have internal predecessors, (315), 0 states have call successors, (0), 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 119 [2022-09-16 11:11:29,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:29,785 INFO L225 Difference]: With dead ends: 4938 [2022-09-16 11:11:29,785 INFO L226 Difference]: Without dead ends: 4881 [2022-09-16 11:11:29,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 189 SyntacticMatches, 4 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=878, Invalid=10451, Unknown=17, NotChecked=210, Total=11556 [2022-09-16 11:11:29,786 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 758 mSDsluCounter, 6214 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 6011 SdHoareTripleChecker+Invalid, 2767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1479 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:29,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 6011 Invalid, 2767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1239 Invalid, 0 Unknown, 1479 Unchecked, 0.6s Time] [2022-09-16 11:11:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2022-09-16 11:11:29,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 3779. [2022-09-16 11:11:29,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3779 states, 3773 states have (on average 2.6435197455605617) internal successors, (9974), 3778 states have internal predecessors, (9974), 0 states have call successors, (0), 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 11:11:29,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 9974 transitions. [2022-09-16 11:11:29,846 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 9974 transitions. Word has length 119 [2022-09-16 11:11:29,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:29,846 INFO L495 AbstractCegarLoop]: Abstraction has 3779 states and 9974 transitions. [2022-09-16 11:11:29,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 77 states have (on average 4.090909090909091) internal successors, (315), 78 states have internal predecessors, (315), 0 states have call successors, (0), 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 11:11:29,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 9974 transitions. [2022-09-16 11:11:29,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:11:29,849 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:29,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:29,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:30,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-09-16 11:11:30,050 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:30,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:30,051 INFO L85 PathProgramCache]: Analyzing trace with hash -2108026125, now seen corresponding path program 2 times [2022-09-16 11:11:30,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:30,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955015734] [2022-09-16 11:11:30,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:30,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:30,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:30,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:30,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955015734] [2022-09-16 11:11:30,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955015734] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:30,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588440794] [2022-09-16 11:11:30,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:30,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:30,864 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:30,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-09-16 11:11:30,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:11:30,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:30,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 45 conjunts are in the unsatisfiable core [2022-09-16 11:11:30,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:31,453 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 11:11:31,755 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 11:11:31,899 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 11:11:32,178 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:11:32,178 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 11:11:32,210 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:32,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:33,463 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:33,464 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 61 treesize of output 49 [2022-09-16 11:11:33,472 INFO L356 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-09-16 11:11:33,472 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 144 treesize of output 136 [2022-09-16 11:11:33,478 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-09-16 11:11:33,478 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 127 treesize of output 101 [2022-09-16 11:11:33,485 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-09-16 11:11:33,485 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 80 treesize of output 67 [2022-09-16 11:11:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:34,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588440794] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:34,150 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:34,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 22] total 69 [2022-09-16 11:11:34,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319731724] [2022-09-16 11:11:34,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:34,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-09-16 11:11:34,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:34,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-09-16 11:11:34,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=4350, Unknown=36, NotChecked=0, Total=4830 [2022-09-16 11:11:34,152 INFO L87 Difference]: Start difference. First operand 3779 states and 9974 transitions. Second operand has 70 states, 69 states have (on average 4.550724637681159) internal successors, (314), 70 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:11:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:38,616 INFO L93 Difference]: Finished difference Result 5375 states and 13685 transitions. [2022-09-16 11:11:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-09-16 11:11:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.550724637681159) internal successors, (314), 70 states have internal predecessors, (314), 0 states have call successors, (0), 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 119 [2022-09-16 11:11:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:38,624 INFO L225 Difference]: With dead ends: 5375 [2022-09-16 11:11:38,624 INFO L226 Difference]: Without dead ends: 5318 [2022-09-16 11:11:38,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2705 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1493, Invalid=11127, Unknown=36, NotChecked=0, Total=12656 [2022-09-16 11:11:38,625 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 2348 mSDsluCounter, 5163 mSDsCounter, 0 mSdLazyCounter, 1895 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2348 SdHoareTripleChecker+Valid, 5004 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 1895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 865 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:38,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2348 Valid, 5004 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 1895 Invalid, 0 Unknown, 865 Unchecked, 0.9s Time] [2022-09-16 11:11:38,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5318 states. [2022-09-16 11:11:38,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5318 to 4528. [2022-09-16 11:11:38,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4528 states, 4522 states have (on average 2.6251658558160105) internal successors, (11871), 4527 states have internal predecessors, (11871), 0 states have call successors, (0), 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 11:11:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4528 states to 4528 states and 11871 transitions. [2022-09-16 11:11:38,691 INFO L78 Accepts]: Start accepts. Automaton has 4528 states and 11871 transitions. Word has length 119 [2022-09-16 11:11:38,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:38,691 INFO L495 AbstractCegarLoop]: Abstraction has 4528 states and 11871 transitions. [2022-09-16 11:11:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.550724637681159) internal successors, (314), 70 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:11:38,691 INFO L276 IsEmpty]: Start isEmpty. Operand 4528 states and 11871 transitions. [2022-09-16 11:11:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:11:38,694 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:38,695 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:38,711 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-09-16 11:11:38,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-09-16 11:11:38,895 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:38,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:38,896 INFO L85 PathProgramCache]: Analyzing trace with hash 656333343, now seen corresponding path program 3 times [2022-09-16 11:11:38,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:38,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826584866] [2022-09-16 11:11:38,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:38,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:39,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:39,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826584866] [2022-09-16 11:11:39,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826584866] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:39,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717378120] [2022-09-16 11:11:39,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:11:39,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:39,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:39,395 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:39,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-09-16 11:11:39,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-16 11:11:39,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:39,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 28 conjunts are in the unsatisfiable core [2022-09-16 11:11:39,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:39,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:39,885 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 11:11:40,070 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:40,071 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 47 treesize of output 13 [2022-09-16 11:11:40,095 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:11:40,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:40,305 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1162 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1162) c_~q~0.base))) (or (not (= (select .cse0 (+ c_~q~0.offset (* 4 c_~q_back~0))) 0)) (< (let ((.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) 2147483648)))) is different from false [2022-09-16 11:11:40,353 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:40,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 114 [2022-09-16 11:11:40,366 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:40,366 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 54 [2022-09-16 11:11:40,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 1 not checked. [2022-09-16 11:11:40,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717378120] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:40,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:40,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15, 15] total 49 [2022-09-16 11:11:40,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480154592] [2022-09-16 11:11:40,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:40,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-09-16 11:11:40,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:40,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-09-16 11:11:40,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=2201, Unknown=1, NotChecked=94, Total=2450 [2022-09-16 11:11:40,827 INFO L87 Difference]: Start difference. First operand 4528 states and 11871 transitions. Second operand has 50 states, 49 states have (on average 6.020408163265306) internal successors, (295), 50 states have internal predecessors, (295), 0 states have call successors, (0), 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 11:11:45,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:45,284 INFO L93 Difference]: Finished difference Result 12137 states and 31430 transitions. [2022-09-16 11:11:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-09-16 11:11:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 49 states have (on average 6.020408163265306) internal successors, (295), 50 states have internal predecessors, (295), 0 states have call successors, (0), 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 119 [2022-09-16 11:11:45,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:45,303 INFO L225 Difference]: With dead ends: 12137 [2022-09-16 11:11:45,303 INFO L226 Difference]: Without dead ends: 12137 [2022-09-16 11:11:45,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 213 SyntacticMatches, 2 SemanticMatches, 127 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4660 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1477, Invalid=14782, Unknown=1, NotChecked=252, Total=16512 [2022-09-16 11:11:45,304 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 2835 mSDsluCounter, 6703 mSDsCounter, 0 mSdLazyCounter, 3011 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2835 SdHoareTripleChecker+Valid, 6594 SdHoareTripleChecker+Invalid, 3875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 609 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:45,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2835 Valid, 6594 Invalid, 3875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 3011 Invalid, 0 Unknown, 609 Unchecked, 1.4s Time] [2022-09-16 11:11:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12137 states. [2022-09-16 11:11:45,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12137 to 6343. [2022-09-16 11:11:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6343 states, 6337 states have (on average 2.6812371784756195) internal successors, (16991), 6342 states have internal predecessors, (16991), 0 states have call successors, (0), 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 11:11:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6343 states to 6343 states and 16991 transitions. [2022-09-16 11:11:45,429 INFO L78 Accepts]: Start accepts. Automaton has 6343 states and 16991 transitions. Word has length 119 [2022-09-16 11:11:45,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:45,429 INFO L495 AbstractCegarLoop]: Abstraction has 6343 states and 16991 transitions. [2022-09-16 11:11:45,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 49 states have (on average 6.020408163265306) internal successors, (295), 50 states have internal predecessors, (295), 0 states have call successors, (0), 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 11:11:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand 6343 states and 16991 transitions. [2022-09-16 11:11:45,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:11:45,433 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:45,433 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:45,451 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-09-16 11:11:45,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-09-16 11:11:45,634 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:45,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:45,634 INFO L85 PathProgramCache]: Analyzing trace with hash 687272871, now seen corresponding path program 1 times [2022-09-16 11:11:45,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:45,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695248058] [2022-09-16 11:11:45,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:45,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:46,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695248058] [2022-09-16 11:11:46,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695248058] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:46,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419789076] [2022-09-16 11:11:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:46,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:46,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:46,321 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:46,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-09-16 11:11:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:46,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 49 conjunts are in the unsatisfiable core [2022-09-16 11:11:46,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:47,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:47,207 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 29 treesize of output 29 [2022-09-16 11:11:47,520 INFO L356 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-09-16 11:11:47,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 47 treesize of output 16 [2022-09-16 11:11:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:47,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:47,732 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1191 (Array Int Int))) (< (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1191) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) 2147483648)) is different from false [2022-09-16 11:11:47,862 INFO L356 Elim1Store]: treesize reduction 12, result has 81.5 percent of original size [2022-09-16 11:11:47,863 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 74 treesize of output 93 [2022-09-16 11:11:47,867 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:47,867 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 18 treesize of output 5 [2022-09-16 11:11:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:49,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419789076] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:49,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:49,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 23] total 68 [2022-09-16 11:11:49,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46912873] [2022-09-16 11:11:49,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:49,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-09-16 11:11:49,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-09-16 11:11:49,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=299, Invalid=4260, Unknown=1, NotChecked=132, Total=4692 [2022-09-16 11:11:49,540 INFO L87 Difference]: Start difference. First operand 6343 states and 16991 transitions. Second operand has 69 states, 68 states have (on average 4.602941176470588) internal successors, (313), 69 states have internal predecessors, (313), 0 states have call successors, (0), 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 11:11:54,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:54,870 INFO L93 Difference]: Finished difference Result 8097 states and 21359 transitions. [2022-09-16 11:11:54,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:11:54,871 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 4.602941176470588) internal successors, (313), 69 states have internal predecessors, (313), 0 states have call successors, (0), 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 119 [2022-09-16 11:11:54,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:54,883 INFO L225 Difference]: With dead ends: 8097 [2022-09-16 11:11:54,884 INFO L226 Difference]: Without dead ends: 8097 [2022-09-16 11:11:54,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 196 SyntacticMatches, 5 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2559 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1460, Invalid=10315, Unknown=1, NotChecked=214, Total=11990 [2022-09-16 11:11:54,885 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 3105 mSDsluCounter, 6220 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3105 SdHoareTripleChecker+Valid, 6099 SdHoareTripleChecker+Invalid, 3156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 951 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:54,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3105 Valid, 6099 Invalid, 3156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 1966 Invalid, 0 Unknown, 951 Unchecked, 1.0s Time] [2022-09-16 11:11:54,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8097 states. [2022-09-16 11:11:54,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8097 to 6793. [2022-09-16 11:11:54,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6793 states, 6787 states have (on average 2.6765875939295714) internal successors, (18166), 6792 states have internal predecessors, (18166), 0 states have call successors, (0), 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 11:11:54,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6793 states to 6793 states and 18166 transitions. [2022-09-16 11:11:54,997 INFO L78 Accepts]: Start accepts. Automaton has 6793 states and 18166 transitions. Word has length 119 [2022-09-16 11:11:54,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:54,997 INFO L495 AbstractCegarLoop]: Abstraction has 6793 states and 18166 transitions. [2022-09-16 11:11:54,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 4.602941176470588) internal successors, (313), 69 states have internal predecessors, (313), 0 states have call successors, (0), 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 11:11:54,997 INFO L276 IsEmpty]: Start isEmpty. Operand 6793 states and 18166 transitions. [2022-09-16 11:11:55,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:11:55,004 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:55,005 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:55,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:55,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:55,220 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:11:55,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:55,220 INFO L85 PathProgramCache]: Analyzing trace with hash 666619375, now seen corresponding path program 2 times [2022-09-16 11:11:55,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:55,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551983807] [2022-09-16 11:11:55,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:55,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:55,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:55,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551983807] [2022-09-16 11:11:55,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551983807] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:55,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573756807] [2022-09-16 11:11:55,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:55,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:55,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:55,990 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:55,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-09-16 11:11:56,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:11:56,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:56,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 56 conjunts are in the unsatisfiable core [2022-09-16 11:11:56,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:56,493 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 11:11:56,620 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 11:11:56,915 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 11:11:57,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:57,086 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 19 treesize of output 21 [2022-09-16 11:11:57,372 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:57,372 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 47 treesize of output 13 [2022-09-16 11:11:57,405 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:57,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:59,080 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:59,081 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 2 case distinctions, treesize of input 149 treesize of output 94 [2022-09-16 11:11:59,115 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:59,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 416 treesize of output 408 [2022-09-16 11:11:59,144 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:59,144 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 263 treesize of output 269 [2022-09-16 11:11:59,163 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:59,164 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 292 treesize of output 238 [2022-09-16 11:12:00,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:00,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573756807] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:00,380 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:00,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 25, 26] total 73 [2022-09-16 11:12:00,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825281173] [2022-09-16 11:12:00,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:00,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2022-09-16 11:12:00,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:00,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2022-09-16 11:12:00,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=4926, Unknown=35, NotChecked=0, Total=5402 [2022-09-16 11:12:00,382 INFO L87 Difference]: Start difference. First operand 6793 states and 18166 transitions. Second operand has 74 states, 73 states have (on average 4.301369863013699) internal successors, (314), 74 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:12:06,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:06,791 INFO L93 Difference]: Finished difference Result 10701 states and 28181 transitions. [2022-09-16 11:12:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-09-16 11:12:06,791 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 73 states have (on average 4.301369863013699) internal successors, (314), 74 states have internal predecessors, (314), 0 states have call successors, (0), 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 119 [2022-09-16 11:12:06,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:06,809 INFO L225 Difference]: With dead ends: 10701 [2022-09-16 11:12:06,809 INFO L226 Difference]: Without dead ends: 10701 [2022-09-16 11:12:06,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 199 SyntacticMatches, 5 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4090 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1911, Invalid=15605, Unknown=40, NotChecked=0, Total=17556 [2022-09-16 11:12:06,811 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 3184 mSDsluCounter, 8545 mSDsCounter, 0 mSdLazyCounter, 2798 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 8260 SdHoareTripleChecker+Invalid, 4066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1024 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:06,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3184 Valid, 8260 Invalid, 4066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2798 Invalid, 0 Unknown, 1024 Unchecked, 1.4s Time] [2022-09-16 11:12:06,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10701 states. [2022-09-16 11:12:06,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10701 to 7102. [2022-09-16 11:12:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7102 states, 7096 states have (on average 2.680806087936866) internal successors, (19023), 7101 states have internal predecessors, (19023), 0 states have call successors, (0), 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 11:12:06,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7102 states to 7102 states and 19023 transitions. [2022-09-16 11:12:06,957 INFO L78 Accepts]: Start accepts. Automaton has 7102 states and 19023 transitions. Word has length 119 [2022-09-16 11:12:06,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:06,957 INFO L495 AbstractCegarLoop]: Abstraction has 7102 states and 19023 transitions. [2022-09-16 11:12:06,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 73 states have (on average 4.301369863013699) internal successors, (314), 74 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:12:06,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7102 states and 19023 transitions. [2022-09-16 11:12:06,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:12:06,962 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:06,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:06,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-09-16 11:12:07,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-09-16 11:12:07,163 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:12:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash -911245747, now seen corresponding path program 4 times [2022-09-16 11:12:07,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:07,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067823028] [2022-09-16 11:12:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:07,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:07,981 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:07,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:07,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067823028] [2022-09-16 11:12:07,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067823028] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:07,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818367853] [2022-09-16 11:12:07,982 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:12:07,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:07,983 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:07,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-09-16 11:12:08,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:12:08,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:08,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 58 conjunts are in the unsatisfiable core [2022-09-16 11:12:08,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:08,513 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 11:12:08,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:08,728 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 23 treesize of output 22 [2022-09-16 11:12:09,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:09,157 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:12:09,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:09,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:12:09,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:09,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:12:09,716 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:09,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 16 [2022-09-16 11:12:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:09,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:11,171 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:11,172 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 2 case distinctions, treesize of input 114 treesize of output 79 [2022-09-16 11:12:11,199 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:11,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 226 [2022-09-16 11:12:11,212 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:11,213 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 142 [2022-09-16 11:12:11,227 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:11,227 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 97 [2022-09-16 11:12:12,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:12,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818367853] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:12,986 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:12,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 28] total 79 [2022-09-16 11:12:12,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987113989] [2022-09-16 11:12:12,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:12,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-09-16 11:12:12,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-09-16 11:12:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=5892, Unknown=26, NotChecked=0, Total=6320 [2022-09-16 11:12:12,987 INFO L87 Difference]: Start difference. First operand 7102 states and 19023 transitions. Second operand has 80 states, 79 states have (on average 3.9746835443037973) internal successors, (314), 80 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:12:25,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:25,277 INFO L93 Difference]: Finished difference Result 10548 states and 27508 transitions. [2022-09-16 11:12:25,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-09-16 11:12:25,278 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 3.9746835443037973) internal successors, (314), 80 states have internal predecessors, (314), 0 states have call successors, (0), 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 119 [2022-09-16 11:12:25,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:25,294 INFO L225 Difference]: With dead ends: 10548 [2022-09-16 11:12:25,295 INFO L226 Difference]: Without dead ends: 10548 [2022-09-16 11:12:25,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 192 SyntacticMatches, 6 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6438 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=2460, Invalid=19566, Unknown=26, NotChecked=0, Total=22052 [2022-09-16 11:12:25,296 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 3402 mSDsluCounter, 9820 mSDsCounter, 0 mSdLazyCounter, 3149 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 9490 SdHoareTripleChecker+Invalid, 4915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 3149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1408 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:25,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3402 Valid, 9490 Invalid, 4915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 3149 Invalid, 0 Unknown, 1408 Unchecked, 1.9s Time] [2022-09-16 11:12:25,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10548 states. [2022-09-16 11:12:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10548 to 7098. [2022-09-16 11:12:25,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7098 states, 7092 states have (on average 2.6807670614777215) internal successors, (19012), 7097 states have internal predecessors, (19012), 0 states have call successors, (0), 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 11:12:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7098 states to 7098 states and 19012 transitions. [2022-09-16 11:12:25,420 INFO L78 Accepts]: Start accepts. Automaton has 7098 states and 19012 transitions. Word has length 119 [2022-09-16 11:12:25,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:25,420 INFO L495 AbstractCegarLoop]: Abstraction has 7098 states and 19012 transitions. [2022-09-16 11:12:25,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 3.9746835443037973) internal successors, (314), 80 states have internal predecessors, (314), 0 states have call successors, (0), 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 11:12:25,421 INFO L276 IsEmpty]: Start isEmpty. Operand 7098 states and 19012 transitions. [2022-09-16 11:12:25,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:12:25,425 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:25,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:25,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-09-16 11:12:25,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-09-16 11:12:25,626 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:12:25,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:25,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1694673991, now seen corresponding path program 3 times [2022-09-16 11:12:25,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:25,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585911000] [2022-09-16 11:12:25,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:25,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:26,176 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:26,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:26,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585911000] [2022-09-16 11:12:26,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585911000] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:26,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [15145276] [2022-09-16 11:12:26,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:12:26,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:26,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:26,178 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:26,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-09-16 11:12:26,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-16 11:12:26,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:26,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 11:12:26,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:26,854 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-09-16 11:12:26,855 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 19 [2022-09-16 11:12:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:26,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:27,106 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:27,106 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 67 [2022-09-16 11:12:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:27,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [15145276] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:27,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:27,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 8, 8] total 34 [2022-09-16 11:12:27,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020402032] [2022-09-16 11:12:27,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:27,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:12:27,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:27,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:12:27,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:12:27,313 INFO L87 Difference]: Start difference. First operand 7098 states and 19012 transitions. Second operand has 35 states, 34 states have (on average 6.264705882352941) internal successors, (213), 35 states have internal predecessors, (213), 0 states have call successors, (0), 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 11:12:29,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:29,305 INFO L93 Difference]: Finished difference Result 10868 states and 28966 transitions. [2022-09-16 11:12:29,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-09-16 11:12:29,305 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 6.264705882352941) internal successors, (213), 35 states have internal predecessors, (213), 0 states have call successors, (0), 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 119 [2022-09-16 11:12:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:29,328 INFO L225 Difference]: With dead ends: 10868 [2022-09-16 11:12:29,328 INFO L226 Difference]: Without dead ends: 10868 [2022-09-16 11:12:29,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 226 SyntacticMatches, 2 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 912 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=531, Invalid=4299, Unknown=0, NotChecked=0, Total=4830 [2022-09-16 11:12:29,329 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1043 mSDsluCounter, 4819 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1043 SdHoareTripleChecker+Valid, 4794 SdHoareTripleChecker+Invalid, 2350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 471 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:29,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1043 Valid, 4794 Invalid, 2350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1813 Invalid, 0 Unknown, 471 Unchecked, 0.8s Time] [2022-09-16 11:12:29,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10868 states. [2022-09-16 11:12:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10868 to 6816. [2022-09-16 11:12:29,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6816 states, 6810 states have (on average 2.6941262848751837) internal successors, (18347), 6815 states have internal predecessors, (18347), 0 states have call successors, (0), 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 11:12:29,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6816 states to 6816 states and 18347 transitions. [2022-09-16 11:12:29,460 INFO L78 Accepts]: Start accepts. Automaton has 6816 states and 18347 transitions. Word has length 119 [2022-09-16 11:12:29,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:29,460 INFO L495 AbstractCegarLoop]: Abstraction has 6816 states and 18347 transitions. [2022-09-16 11:12:29,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 6.264705882352941) internal successors, (213), 35 states have internal predecessors, (213), 0 states have call successors, (0), 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 11:12:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 6816 states and 18347 transitions. [2022-09-16 11:12:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-09-16 11:12:29,464 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:29,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:29,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:29,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-09-16 11:12:29,665 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:12:29,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:29,666 INFO L85 PathProgramCache]: Analyzing trace with hash 8915933, now seen corresponding path program 1 times [2022-09-16 11:12:29,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:29,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370932091] [2022-09-16 11:12:29,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:29,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:30,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:30,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:30,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370932091] [2022-09-16 11:12:30,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370932091] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:30,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728589748] [2022-09-16 11:12:30,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:30,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:30,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:30,210 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:30,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-09-16 11:12:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:30,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 50 conjunts are in the unsatisfiable core [2022-09-16 11:12:30,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:30,814 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 11:12:31,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:31,317 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 20 treesize of output 22 [2022-09-16 11:12:31,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:31,646 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 31 treesize of output 31 [2022-09-16 11:12:31,965 INFO L356 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-09-16 11:12:31,965 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 18 [2022-09-16 11:12:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:32,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:32,217 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1319 (Array Int Int))) (< 0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1319) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ 2147483649 (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))))) is different from false [2022-09-16 11:12:33,076 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:33,076 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 87 treesize of output 63 [2022-09-16 11:12:33,100 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:33,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 274 treesize of output 288 [2022-09-16 11:12:33,113 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:33,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 220 treesize of output 214 [2022-09-16 11:12:33,123 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:33,123 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 170 treesize of output 118 [2022-09-16 11:12:35,838 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:35,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728589748] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:35,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:35,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27, 27] total 75 [2022-09-16 11:12:35,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236550848] [2022-09-16 11:12:35,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:35,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-09-16 11:12:35,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:35,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-09-16 11:12:35,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=5251, Unknown=7, NotChecked=146, Total=5700 [2022-09-16 11:12:35,840 INFO L87 Difference]: Start difference. First operand 6816 states and 18347 transitions. Second operand has 76 states, 75 states have (on average 4.24) internal successors, (318), 76 states have internal predecessors, (318), 0 states have call successors, (0), 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 11:12:39,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:39,583 INFO L93 Difference]: Finished difference Result 8573 states and 22950 transitions. [2022-09-16 11:12:39,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-09-16 11:12:39,584 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 4.24) internal successors, (318), 76 states have internal predecessors, (318), 0 states have call successors, (0), 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 120 [2022-09-16 11:12:39,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:39,598 INFO L225 Difference]: With dead ends: 8573 [2022-09-16 11:12:39,598 INFO L226 Difference]: Without dead ends: 8225 [2022-09-16 11:12:39,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 190 SyntacticMatches, 2 SemanticMatches, 112 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2821 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=940, Invalid=11713, Unknown=7, NotChecked=222, Total=12882 [2022-09-16 11:12:39,600 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 736 mSDsluCounter, 6247 mSDsCounter, 0 mSdLazyCounter, 1552 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 6134 SdHoareTripleChecker+Invalid, 2106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 510 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:39,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 6134 Invalid, 2106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1552 Invalid, 0 Unknown, 510 Unchecked, 0.7s Time] [2022-09-16 11:12:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8225 states. [2022-09-16 11:12:39,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8225 to 6720. [2022-09-16 11:12:39,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6720 states, 6714 states have (on average 2.6988382484361035) internal successors, (18120), 6719 states have internal predecessors, (18120), 0 states have call successors, (0), 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 11:12:39,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6720 states to 6720 states and 18120 transitions. [2022-09-16 11:12:39,714 INFO L78 Accepts]: Start accepts. Automaton has 6720 states and 18120 transitions. Word has length 120 [2022-09-16 11:12:39,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:39,715 INFO L495 AbstractCegarLoop]: Abstraction has 6720 states and 18120 transitions. [2022-09-16 11:12:39,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 4.24) internal successors, (318), 76 states have internal predecessors, (318), 0 states have call successors, (0), 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 11:12:39,715 INFO L276 IsEmpty]: Start isEmpty. Operand 6720 states and 18120 transitions. [2022-09-16 11:12:39,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-09-16 11:12:39,719 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:39,719 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:39,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:39,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:39,920 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:12:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -924299857, now seen corresponding path program 2 times [2022-09-16 11:12:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375747132] [2022-09-16 11:12:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:39,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:40,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375747132] [2022-09-16 11:12:40,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375747132] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:40,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077582762] [2022-09-16 11:12:40,421 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:40,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:40,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:40,422 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:40,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-09-16 11:12:40,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:12:40,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:40,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 11:12:40,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:41,002 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 11:12:41,299 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 11:12:41,463 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 11:12:41,663 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 11:12:41,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:41,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:42,666 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:42,666 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 64 treesize of output 52 [2022-09-16 11:12:42,674 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:12:42,675 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 332 treesize of output 303 [2022-09-16 11:12:42,688 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:12:42,688 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 296 treesize of output 240 [2022-09-16 11:12:42,696 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:12:42,696 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 240 treesize of output 212 [2022-09-16 11:12:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:43,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077582762] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:43,145 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:43,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 25, 22] total 67 [2022-09-16 11:12:43,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743411054] [2022-09-16 11:12:43,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:43,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-09-16 11:12:43,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:43,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-09-16 11:12:43,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=572, Invalid=3944, Unknown=40, NotChecked=0, Total=4556 [2022-09-16 11:12:43,147 INFO L87 Difference]: Start difference. First operand 6720 states and 18120 transitions. Second operand has 68 states, 67 states have (on average 4.552238805970149) internal successors, (305), 68 states have internal predecessors, (305), 0 states have call successors, (0), 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 11:12:46,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:46,509 INFO L93 Difference]: Finished difference Result 11939 states and 31487 transitions. [2022-09-16 11:12:46,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-09-16 11:12:46,509 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 4.552238805970149) internal successors, (305), 68 states have internal predecessors, (305), 0 states have call successors, (0), 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 120 [2022-09-16 11:12:46,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:46,527 INFO L225 Difference]: With dead ends: 11939 [2022-09-16 11:12:46,527 INFO L226 Difference]: Without dead ends: 10539 [2022-09-16 11:12:46,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3719 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1716, Invalid=11816, Unknown=40, NotChecked=0, Total=13572 [2022-09-16 11:12:46,529 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 2627 mSDsluCounter, 8364 mSDsCounter, 0 mSdLazyCounter, 2650 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 8119 SdHoareTripleChecker+Invalid, 3452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 668 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:46,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2627 Valid, 8119 Invalid, 3452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2650 Invalid, 0 Unknown, 668 Unchecked, 1.1s Time] [2022-09-16 11:12:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10539 states. [2022-09-16 11:12:46,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10539 to 7526. [2022-09-16 11:12:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7526 states, 7520 states have (on average 2.671276595744681) internal successors, (20088), 7525 states have internal predecessors, (20088), 0 states have call successors, (0), 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 11:12:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7526 states to 7526 states and 20088 transitions. [2022-09-16 11:12:46,722 INFO L78 Accepts]: Start accepts. Automaton has 7526 states and 20088 transitions. Word has length 120 [2022-09-16 11:12:46,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:46,722 INFO L495 AbstractCegarLoop]: Abstraction has 7526 states and 20088 transitions. [2022-09-16 11:12:46,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 4.552238805970149) internal successors, (305), 68 states have internal predecessors, (305), 0 states have call successors, (0), 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 11:12:46,722 INFO L276 IsEmpty]: Start isEmpty. Operand 7526 states and 20088 transitions. [2022-09-16 11:12:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-09-16 11:12:46,725 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:46,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:46,743 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:46,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:46,926 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:12:46,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1128502269, now seen corresponding path program 3 times [2022-09-16 11:12:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:46,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427962617] [2022-09-16 11:12:46,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:46,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:47,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:47,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427962617] [2022-09-16 11:12:47,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427962617] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:47,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049652790] [2022-09-16 11:12:47,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:12:47,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:47,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:47,930 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:47,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-09-16 11:12:48,045 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-16 11:12:48,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:48,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:12:48,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:48,244 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 11:12:48,272 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:48,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:48,308 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:48,308 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 11:12:48,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:48,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049652790] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:48,431 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:48,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 7, 7] total 35 [2022-09-16 11:12:48,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234172127] [2022-09-16 11:12:48,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:48,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-09-16 11:12:48,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:48,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-09-16 11:12:48,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1159, Unknown=0, NotChecked=0, Total=1260 [2022-09-16 11:12:48,432 INFO L87 Difference]: Start difference. First operand 7526 states and 20088 transitions. Second operand has 36 states, 35 states have (on average 6.114285714285714) internal successors, (214), 36 states have internal predecessors, (214), 0 states have call successors, (0), 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 11:12:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:51,916 INFO L93 Difference]: Finished difference Result 10609 states and 28178 transitions. [2022-09-16 11:12:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-09-16 11:12:51,917 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 6.114285714285714) internal successors, (214), 36 states have internal predecessors, (214), 0 states have call successors, (0), 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 120 [2022-09-16 11:12:51,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:51,934 INFO L225 Difference]: With dead ends: 10609 [2022-09-16 11:12:51,934 INFO L226 Difference]: Without dead ends: 9467 [2022-09-16 11:12:51,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1684 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=708, Invalid=5934, Unknown=0, NotChecked=0, Total=6642 [2022-09-16 11:12:51,935 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 1545 mSDsluCounter, 5025 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1545 SdHoareTripleChecker+Valid, 5067 SdHoareTripleChecker+Invalid, 2243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:51,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1545 Valid, 5067 Invalid, 2243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-09-16 11:12:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9467 states. [2022-09-16 11:12:52,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9467 to 7965. [2022-09-16 11:12:52,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7965 states, 7959 states have (on average 2.694685261967584) internal successors, (21447), 7964 states have internal predecessors, (21447), 0 states have call successors, (0), 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 11:12:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7965 states to 7965 states and 21447 transitions. [2022-09-16 11:12:52,131 INFO L78 Accepts]: Start accepts. Automaton has 7965 states and 21447 transitions. Word has length 120 [2022-09-16 11:12:52,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:52,132 INFO L495 AbstractCegarLoop]: Abstraction has 7965 states and 21447 transitions. [2022-09-16 11:12:52,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 6.114285714285714) internal successors, (214), 36 states have internal predecessors, (214), 0 states have call successors, (0), 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 11:12:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 7965 states and 21447 transitions. [2022-09-16 11:12:52,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-09-16 11:12:52,135 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:52,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:52,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:52,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:52,336 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:12:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash -169376901, now seen corresponding path program 1 times [2022-09-16 11:12:52,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:52,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472021515] [2022-09-16 11:12:52,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:52,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:53,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:53,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:53,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472021515] [2022-09-16 11:12:53,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472021515] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:53,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197362324] [2022-09-16 11:12:53,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:53,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:53,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:53,006 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:53,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-09-16 11:12:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:53,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 50 conjunts are in the unsatisfiable core [2022-09-16 11:12:53,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:53,660 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 11:12:54,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:54,176 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 20 treesize of output 22 [2022-09-16 11:12:54,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:54,510 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 31 treesize of output 31 [2022-09-16 11:12:54,894 INFO L356 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-09-16 11:12:54,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 18 [2022-09-16 11:12:54,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:54,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:55,153 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1411 (Array Int Int))) (< 0 (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1411) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ 2147483649 (select .cse0 (+ .cse1 c_~q~0.offset)) (select .cse0 (+ .cse1 c_~q~0.offset 4)))))) is different from false [2022-09-16 11:12:56,030 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:56,031 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 87 treesize of output 63 [2022-09-16 11:12:56,057 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:56,057 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 154 treesize of output 185 [2022-09-16 11:12:56,063 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 67 [2022-09-16 11:12:56,075 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:56,075 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 64 treesize of output 71 [2022-09-16 11:12:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:58,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197362324] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:58,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:58,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 27, 27] total 76 [2022-09-16 11:12:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602104642] [2022-09-16 11:12:58,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-09-16 11:12:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-09-16 11:12:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=316, Invalid=5382, Unknown=6, NotChecked=148, Total=5852 [2022-09-16 11:12:58,299 INFO L87 Difference]: Start difference. First operand 7965 states and 21447 transitions. Second operand has 77 states, 76 states have (on average 4.184210526315789) internal successors, (318), 77 states have internal predecessors, (318), 0 states have call successors, (0), 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 11:13:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:01,816 INFO L93 Difference]: Finished difference Result 9322 states and 25236 transitions. [2022-09-16 11:13:01,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:13:01,816 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 4.184210526315789) internal successors, (318), 77 states have internal predecessors, (318), 0 states have call successors, (0), 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 120 [2022-09-16 11:13:01,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:01,831 INFO L225 Difference]: With dead ends: 9322 [2022-09-16 11:13:01,832 INFO L226 Difference]: Without dead ends: 9322 [2022-09-16 11:13:01,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 190 SyntacticMatches, 4 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2691 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=935, Invalid=10835, Unknown=6, NotChecked=214, Total=11990 [2022-09-16 11:13:01,833 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 820 mSDsluCounter, 5906 mSDsCounter, 0 mSdLazyCounter, 1278 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 5870 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 911 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:01,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 5870 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1278 Invalid, 0 Unknown, 911 Unchecked, 0.6s Time] [2022-09-16 11:13:01,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9322 states. [2022-09-16 11:13:01,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9322 to 7524. [2022-09-16 11:13:01,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 7518 states have (on average 2.6988560787443467) internal successors, (20290), 7523 states have internal predecessors, (20290), 0 states have call successors, (0), 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 11:13:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 20290 transitions. [2022-09-16 11:13:01,969 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 20290 transitions. Word has length 120 [2022-09-16 11:13:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:01,969 INFO L495 AbstractCegarLoop]: Abstraction has 7524 states and 20290 transitions. [2022-09-16 11:13:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 4.184210526315789) internal successors, (318), 77 states have internal predecessors, (318), 0 states have call successors, (0), 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 11:13:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 20290 transitions. [2022-09-16 11:13:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-09-16 11:13:01,973 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:01,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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, 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 11:13:01,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:02,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-09-16 11:13:02,174 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:02,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:02,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1416608567, now seen corresponding path program 1 times [2022-09-16 11:13:02,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:02,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306907369] [2022-09-16 11:13:02,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:02,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:02,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:02,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306907369] [2022-09-16 11:13:02,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306907369] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:02,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084251942] [2022-09-16 11:13:02,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:02,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:02,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:02,640 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:02,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-09-16 11:13:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:02,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 62 conjunts are in the unsatisfiable core [2022-09-16 11:13:02,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:02,790 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 11:13:03,010 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:13:03,010 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 11:13:03,170 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 15 treesize of output 11 [2022-09-16 11:13:03,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:03,371 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 23 treesize of output 22 [2022-09-16 11:13:03,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:03,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:13:03,962 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:13:04,274 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:13:04,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:04,276 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:04,276 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 16 [2022-09-16 11:13:04,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:04,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:05,652 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:05,652 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 2 case distinctions, treesize of input 114 treesize of output 79 [2022-09-16 11:13:05,673 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:05,674 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 194 treesize of output 226 [2022-09-16 11:13:05,687 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:05,687 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 156 treesize of output 142 [2022-09-16 11:13:05,701 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:05,701 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 91 treesize of output 97 [2022-09-16 11:13:07,760 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 11:13:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:07,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084251942] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:07,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:07,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 28] total 74 [2022-09-16 11:13:07,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740632526] [2022-09-16 11:13:07,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:07,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-09-16 11:13:07,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-09-16 11:13:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=5137, Unknown=28, NotChecked=0, Total=5550 [2022-09-16 11:13:07,803 INFO L87 Difference]: Start difference. First operand 7524 states and 20290 transitions. Second operand has 75 states, 74 states have (on average 4.378378378378378) internal successors, (324), 75 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:13:11,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:11,993 INFO L93 Difference]: Finished difference Result 10316 states and 27687 transitions. [2022-09-16 11:13:11,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-09-16 11:13:11,994 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 4.378378378378378) internal successors, (324), 75 states have internal predecessors, (324), 0 states have call successors, (0), 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 122 [2022-09-16 11:13:11,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:12,048 INFO L225 Difference]: With dead ends: 10316 [2022-09-16 11:13:12,048 INFO L226 Difference]: Without dead ends: 10035 [2022-09-16 11:13:12,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 198 SyntacticMatches, 3 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4106 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=1196, Invalid=12571, Unknown=39, NotChecked=0, Total=13806 [2022-09-16 11:13:12,049 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 1780 mSDsluCounter, 6683 mSDsCounter, 0 mSdLazyCounter, 1850 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 6478 SdHoareTripleChecker+Invalid, 3068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1124 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:12,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1780 Valid, 6478 Invalid, 3068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1850 Invalid, 0 Unknown, 1124 Unchecked, 0.9s Time] [2022-09-16 11:13:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10035 states. [2022-09-16 11:13:12,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10035 to 7252. [2022-09-16 11:13:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7252 states, 7246 states have (on average 2.714187137731162) internal successors, (19667), 7251 states have internal predecessors, (19667), 0 states have call successors, (0), 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 11:13:12,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7252 states to 7252 states and 19667 transitions. [2022-09-16 11:13:12,158 INFO L78 Accepts]: Start accepts. Automaton has 7252 states and 19667 transitions. Word has length 122 [2022-09-16 11:13:12,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:12,159 INFO L495 AbstractCegarLoop]: Abstraction has 7252 states and 19667 transitions. [2022-09-16 11:13:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 4.378378378378378) internal successors, (324), 75 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:13:12,159 INFO L276 IsEmpty]: Start isEmpty. Operand 7252 states and 19667 transitions. [2022-09-16 11:13:12,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-09-16 11:13:12,164 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:12,164 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:12,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-09-16 11:13:12,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-09-16 11:13:12,364 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:12,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:12,365 INFO L85 PathProgramCache]: Analyzing trace with hash -459531598, now seen corresponding path program 4 times [2022-09-16 11:13:12,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:12,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912047439] [2022-09-16 11:13:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:12,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:13:12,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912047439] [2022-09-16 11:13:12,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912047439] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:12,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084704806] [2022-09-16 11:13:12,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:13:12,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:12,417 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:12,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-09-16 11:13:12,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:13:12,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:12,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 17 conjunts are in the unsatisfiable core [2022-09-16 11:13:12,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:12,917 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:12,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:13,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084704806] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:13,425 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:13,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 14, 14] total 29 [2022-09-16 11:13:13,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634734871] [2022-09-16 11:13:13,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:13,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-09-16 11:13:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:13,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-09-16 11:13:13,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:13:13,427 INFO L87 Difference]: Start difference. First operand 7252 states and 19667 transitions. Second operand has 29 states, 29 states have (on average 10.241379310344827) internal successors, (297), 29 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 11:13:13,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:13,958 INFO L93 Difference]: Finished difference Result 11020 states and 29985 transitions. [2022-09-16 11:13:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:13:13,959 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 10.241379310344827) internal successors, (297), 29 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 126 [2022-09-16 11:13:13,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:13,976 INFO L225 Difference]: With dead ends: 11020 [2022-09-16 11:13:13,977 INFO L226 Difference]: Without dead ends: 9755 [2022-09-16 11:13:13,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=575, Invalid=1681, Unknown=0, NotChecked=0, Total=2256 [2022-09-16 11:13:13,977 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 1176 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:13,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 1746 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:13:13,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9755 states. [2022-09-16 11:13:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9755 to 9171. [2022-09-16 11:13:14,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9171 states, 9169 states have (on average 2.7908168829752427) internal successors, (25589), 9170 states have internal predecessors, (25589), 0 states have call successors, (0), 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 11:13:14,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9171 states to 9171 states and 25589 transitions. [2022-09-16 11:13:14,141 INFO L78 Accepts]: Start accepts. Automaton has 9171 states and 25589 transitions. Word has length 126 [2022-09-16 11:13:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:14,141 INFO L495 AbstractCegarLoop]: Abstraction has 9171 states and 25589 transitions. [2022-09-16 11:13:14,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 10.241379310344827) internal successors, (297), 29 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 11:13:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 9171 states and 25589 transitions. [2022-09-16 11:13:14,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-09-16 11:13:14,145 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:14,145 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-09-16 11:13:14,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:14,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-09-16 11:13:14,346 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:14,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:14,347 INFO L85 PathProgramCache]: Analyzing trace with hash 819222123, now seen corresponding path program 5 times [2022-09-16 11:13:14,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:14,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480106672] [2022-09-16 11:13:14,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:14,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:15,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480106672] [2022-09-16 11:13:15,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480106672] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:15,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598194444] [2022-09-16 11:13:15,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:13:15,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:15,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:15,148 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:15,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-09-16 11:13:15,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:13:15,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:15,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-16 11:13:15,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:15,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:15,862 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 30 treesize of output 30 [2022-09-16 11:13:16,048 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:16,049 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 47 treesize of output 13 [2022-09-16 11:13:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:13:16,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:16,264 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1507 (Array Int Int))) (< (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1507) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) 2147483648)) is different from false [2022-09-16 11:13:16,363 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:16,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 93 [2022-09-16 11:13:16,403 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:16,403 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 18 treesize of output 5 [2022-09-16 11:13:16,837 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:13:16,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598194444] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:16,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:16,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 19, 15] total 57 [2022-09-16 11:13:16,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784007318] [2022-09-16 11:13:16,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:16,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-09-16 11:13:16,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:16,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-09-16 11:13:16,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=3020, Unknown=1, NotChecked=110, Total=3306 [2022-09-16 11:13:16,839 INFO L87 Difference]: Start difference. First operand 9171 states and 25589 transitions. Second operand has 58 states, 57 states have (on average 5.631578947368421) internal successors, (321), 58 states have internal predecessors, (321), 0 states have call successors, (0), 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 11:13:22,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:22,547 INFO L93 Difference]: Finished difference Result 19795 states and 53607 transitions. [2022-09-16 11:13:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-09-16 11:13:22,547 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 5.631578947368421) internal successors, (321), 58 states have internal predecessors, (321), 0 states have call successors, (0), 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 128 [2022-09-16 11:13:22,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:22,585 INFO L225 Difference]: With dead ends: 19795 [2022-09-16 11:13:22,585 INFO L226 Difference]: Without dead ends: 18798 [2022-09-16 11:13:22,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 226 SyntacticMatches, 6 SemanticMatches, 127 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4134 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1385, Invalid=14874, Unknown=1, NotChecked=252, Total=16512 [2022-09-16 11:13:22,587 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 2051 mSDsluCounter, 10245 mSDsCounter, 0 mSdLazyCounter, 4711 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 10060 SdHoareTripleChecker+Invalid, 5479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 4711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:22,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 10060 Invalid, 5479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 4711 Invalid, 0 Unknown, 608 Unchecked, 2.1s Time] [2022-09-16 11:13:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18798 states. [2022-09-16 11:13:22,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18798 to 12085. [2022-09-16 11:13:22,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12085 states, 12083 states have (on average 2.8084912687246546) internal successors, (33935), 12084 states have internal predecessors, (33935), 0 states have call successors, (0), 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 11:13:22,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12085 states to 12085 states and 33935 transitions. [2022-09-16 11:13:22,889 INFO L78 Accepts]: Start accepts. Automaton has 12085 states and 33935 transitions. Word has length 128 [2022-09-16 11:13:22,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:22,890 INFO L495 AbstractCegarLoop]: Abstraction has 12085 states and 33935 transitions. [2022-09-16 11:13:22,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 5.631578947368421) internal successors, (321), 58 states have internal predecessors, (321), 0 states have call successors, (0), 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 11:13:22,890 INFO L276 IsEmpty]: Start isEmpty. Operand 12085 states and 33935 transitions. [2022-09-16 11:13:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-09-16 11:13:22,896 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:22,896 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:22,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-09-16 11:13:23,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-09-16 11:13:23,097 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash 536376077, now seen corresponding path program 5 times [2022-09-16 11:13:23,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:23,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298983123] [2022-09-16 11:13:23,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:23,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:24,154 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:24,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298983123] [2022-09-16 11:13:24,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298983123] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:24,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164674764] [2022-09-16 11:13:24,155 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:13:24,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:24,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:24,156 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:24,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-09-16 11:13:24,278 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:13:24,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:24,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:13:24,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:24,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:24,867 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 30 treesize of output 30 [2022-09-16 11:13:25,053 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:25,053 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 47 treesize of output 13 [2022-09-16 11:13:25,085 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:13:25,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:25,266 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1540 (Array Int Int))) (< (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1540) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset)) (select .cse0 (+ .cse1 c_~q~0.offset 4)))) 2147483648)) is different from false [2022-09-16 11:13:25,354 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:25,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 93 [2022-09-16 11:13:25,380 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:25,381 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 18 treesize of output 5 [2022-09-16 11:13:25,801 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:13:25,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164674764] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:25,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:25,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 19, 15] total 56 [2022-09-16 11:13:25,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203396360] [2022-09-16 11:13:25,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:25,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-09-16 11:13:25,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:25,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-09-16 11:13:25,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2890, Unknown=1, NotChecked=108, Total=3192 [2022-09-16 11:13:25,803 INFO L87 Difference]: Start difference. First operand 12085 states and 33935 transitions. Second operand has 57 states, 56 states have (on average 5.482142857142857) internal successors, (307), 57 states have internal predecessors, (307), 0 states have call successors, (0), 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 11:13:31,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:31,762 INFO L93 Difference]: Finished difference Result 29606 states and 81755 transitions. [2022-09-16 11:13:31,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-09-16 11:13:31,762 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 5.482142857142857) internal successors, (307), 57 states have internal predecessors, (307), 0 states have call successors, (0), 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 128 [2022-09-16 11:13:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:31,824 INFO L225 Difference]: With dead ends: 29606 [2022-09-16 11:13:31,824 INFO L226 Difference]: Without dead ends: 29606 [2022-09-16 11:13:31,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 235 SyntacticMatches, 10 SemanticMatches, 121 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3729 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1263, Invalid=13502, Unknown=1, NotChecked=240, Total=15006 [2022-09-16 11:13:31,825 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 1739 mSDsluCounter, 9344 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 9087 SdHoareTripleChecker+Invalid, 6081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 823 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:31,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 9087 Invalid, 6081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 5130 Invalid, 0 Unknown, 823 Unchecked, 2.3s Time] [2022-09-16 11:13:31,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29606 states. [2022-09-16 11:13:32,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29606 to 12105. [2022-09-16 11:13:32,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12105 states, 12103 states have (on average 2.80690737833595) internal successors, (33972), 12104 states have internal predecessors, (33972), 0 states have call successors, (0), 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 L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12105 states to 12105 states and 33972 transitions. [2022-09-16 11:13:32,140 INFO L78 Accepts]: Start accepts. Automaton has 12105 states and 33972 transitions. Word has length 128 [2022-09-16 11:13:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:32,140 INFO L495 AbstractCegarLoop]: Abstraction has 12105 states and 33972 transitions. [2022-09-16 11:13:32,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 5.482142857142857) internal successors, (307), 57 states have internal predecessors, (307), 0 states have call successors, (0), 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 11:13:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 12105 states and 33972 transitions. [2022-09-16 11:13:32,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-09-16 11:13:32,144 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:32,144 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:32,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:32,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-09-16 11:13:32,345 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:32,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:32,346 INFO L85 PathProgramCache]: Analyzing trace with hash -373917385, now seen corresponding path program 4 times [2022-09-16 11:13:32,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:32,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331191481] [2022-09-16 11:13:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:32,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:33,472 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:33,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:33,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331191481] [2022-09-16 11:13:33,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331191481] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:33,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625228755] [2022-09-16 11:13:33,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:13:33,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:33,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:33,474 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:33,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-09-16 11:13:33,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:13:33,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:33,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 47 conjunts are in the unsatisfiable core [2022-09-16 11:13:33,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:34,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:34,218 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 30 treesize of output 30 [2022-09-16 11:13:34,453 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:34,453 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 35 treesize of output 10 [2022-09-16 11:13:34,489 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:13:34,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:34,785 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1573 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1573) c_~q~0.base)) (.cse2 (* c_~q_front~0 4))) (let ((.cse0 (select .cse1 (+ .cse2 c_~q~0.offset)))) (or (< 0 (+ .cse0 1)) (< 0 (+ .cse0 2147483649 (select .cse1 (+ .cse2 c_~q~0.offset 4)))))))) (forall ((v_ArrVal_1573 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1573) c_~q~0.base)) (.cse4 (* c_~q_front~0 4))) (let ((.cse5 (select .cse3 (+ .cse4 c_~q~0.offset 4)))) (or (< 0 (+ (select .cse3 (+ .cse4 c_~q~0.offset)) 2147483649 .cse5)) (< 0 (+ 2147483650 .cse5))))))) is different from false [2022-09-16 11:13:34,963 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:34,964 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 183 [2022-09-16 11:13:34,972 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:34,972 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 122 treesize of output 102 [2022-09-16 11:13:34,981 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:34,982 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 102 treesize of output 83 [2022-09-16 11:13:35,491 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:13:35,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625228755] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:35,492 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:35,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 16] total 60 [2022-09-16 11:13:35,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032524653] [2022-09-16 11:13:35,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:35,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-09-16 11:13:35,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-09-16 11:13:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=205, Invalid=3338, Unknown=1, NotChecked=116, Total=3660 [2022-09-16 11:13:35,494 INFO L87 Difference]: Start difference. First operand 12105 states and 33972 transitions. Second operand has 61 states, 60 states have (on average 5.4) internal successors, (324), 61 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:13:40,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:40,979 INFO L93 Difference]: Finished difference Result 26908 states and 74415 transitions. [2022-09-16 11:13:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-09-16 11:13:40,980 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 5.4) internal successors, (324), 61 states have internal predecessors, (324), 0 states have call successors, (0), 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 129 [2022-09-16 11:13:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:41,033 INFO L225 Difference]: With dead ends: 26908 [2022-09-16 11:13:41,033 INFO L226 Difference]: Without dead ends: 25910 [2022-09-16 11:13:41,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 227 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3023 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1283, Invalid=13240, Unknown=1, NotChecked=238, Total=14762 [2022-09-16 11:13:41,034 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1747 mSDsluCounter, 9290 mSDsCounter, 0 mSdLazyCounter, 4076 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 9075 SdHoareTripleChecker+Invalid, 4730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 4076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:41,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 9075 Invalid, 4730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 4076 Invalid, 0 Unknown, 525 Unchecked, 1.9s Time] [2022-09-16 11:13:41,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25910 states. [2022-09-16 11:13:41,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25910 to 17196. [2022-09-16 11:13:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17196 states, 17194 states have (on average 2.792369431196929) internal successors, (48012), 17195 states have internal predecessors, (48012), 0 states have call successors, (0), 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 11:13:41,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17196 states to 17196 states and 48012 transitions. [2022-09-16 11:13:41,364 INFO L78 Accepts]: Start accepts. Automaton has 17196 states and 48012 transitions. Word has length 129 [2022-09-16 11:13:41,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:41,364 INFO L495 AbstractCegarLoop]: Abstraction has 17196 states and 48012 transitions. [2022-09-16 11:13:41,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 5.4) internal successors, (324), 61 states have internal predecessors, (324), 0 states have call successors, (0), 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 11:13:41,364 INFO L276 IsEmpty]: Start isEmpty. Operand 17196 states and 48012 transitions. [2022-09-16 11:13:41,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-09-16 11:13:41,369 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:41,369 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:41,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-09-16 11:13:41,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-09-16 11:13:41,570 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:41,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1361940847, now seen corresponding path program 5 times [2022-09-16 11:13:41,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:41,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55759798] [2022-09-16 11:13:41,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:41,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:43,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:43,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55759798] [2022-09-16 11:13:43,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55759798] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:43,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158169841] [2022-09-16 11:13:43,111 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:13:43,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:43,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:43,112 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:43,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-09-16 11:13:43,238 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:13:43,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:43,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 43 conjunts are in the unsatisfiable core [2022-09-16 11:13:43,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:43,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:43,807 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 19 treesize of output 21 [2022-09-16 11:13:44,103 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:44,103 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 35 treesize of output 10 [2022-09-16 11:13:44,141 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:13:44,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:44,548 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1606 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1606) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (let ((.cse2 (select .cse0 (+ .cse1 c_~q~0.offset)))) (or (not (= (select .cse0 (+ c_~q~0.offset (* 4 c_~q_back~0))) 0)) (< 0 (+ 2147483649 (select .cse0 (+ .cse1 c_~q~0.offset 4)) .cse2)) (< 0 (+ .cse2 1)))))) (forall ((v_ArrVal_1606 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1606) c_~q~0.base)) (.cse5 (* c_~q_front~0 4))) (let ((.cse4 (select .cse3 (+ .cse5 c_~q~0.offset 4)))) (or (not (= (select .cse3 (+ c_~q~0.offset (* 4 c_~q_back~0))) 0)) (< 0 (+ 2147483649 .cse4 (select .cse3 (+ .cse5 c_~q~0.offset)))) (< 0 (+ .cse4 2147483650))))))) is different from false [2022-09-16 11:13:44,654 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:44,654 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 254 treesize of output 229 [2022-09-16 11:13:44,668 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:44,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 172 treesize of output 172 [2022-09-16 11:13:44,680 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:44,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 145 treesize of output 146 [2022-09-16 11:13:45,656 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 1 not checked. [2022-09-16 11:13:45,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158169841] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:45,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:45,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 20, 16] total 66 [2022-09-16 11:13:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355301939] [2022-09-16 11:13:45,657 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-09-16 11:13:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-09-16 11:13:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=241, Invalid=4052, Unknown=1, NotChecked=128, Total=4422 [2022-09-16 11:13:45,658 INFO L87 Difference]: Start difference. First operand 17196 states and 48012 transitions. Second operand has 67 states, 66 states have (on average 4.924242424242424) internal successors, (325), 67 states have internal predecessors, (325), 0 states have call successors, (0), 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 11:13:52,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:52,808 INFO L93 Difference]: Finished difference Result 36991 states and 101209 transitions. [2022-09-16 11:13:52,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-09-16 11:13:52,808 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 4.924242424242424) internal successors, (325), 67 states have internal predecessors, (325), 0 states have call successors, (0), 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 129 [2022-09-16 11:13:52,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:52,887 INFO L225 Difference]: With dead ends: 36991 [2022-09-16 11:13:52,887 INFO L226 Difference]: Without dead ends: 35864 [2022-09-16 11:13:52,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 138 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5112 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1774, Invalid=17411, Unknown=1, NotChecked=274, Total=19460 [2022-09-16 11:13:52,888 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 2279 mSDsluCounter, 6630 mSDsCounter, 0 mSdLazyCounter, 3302 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 6553 SdHoareTripleChecker+Invalid, 4086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 3302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 544 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:52,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2279 Valid, 6553 Invalid, 4086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 3302 Invalid, 0 Unknown, 544 Unchecked, 1.8s Time] [2022-09-16 11:13:52,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35864 states. [2022-09-16 11:13:53,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35864 to 16846. [2022-09-16 11:13:53,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16846 states, 16844 states have (on average 2.772144383756827) internal successors, (46694), 16845 states have internal predecessors, (46694), 0 states have call successors, (0), 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 11:13:53,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16846 states to 16846 states and 46694 transitions. [2022-09-16 11:13:53,317 INFO L78 Accepts]: Start accepts. Automaton has 16846 states and 46694 transitions. Word has length 129 [2022-09-16 11:13:53,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:53,317 INFO L495 AbstractCegarLoop]: Abstraction has 16846 states and 46694 transitions. [2022-09-16 11:13:53,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 4.924242424242424) internal successors, (325), 67 states have internal predecessors, (325), 0 states have call successors, (0), 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 11:13:53,317 INFO L276 IsEmpty]: Start isEmpty. Operand 16846 states and 46694 transitions. [2022-09-16 11:13:53,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-09-16 11:13:53,322 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:53,323 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:53,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-09-16 11:13:53,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:53,523 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:13:53,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:53,524 INFO L85 PathProgramCache]: Analyzing trace with hash -552210219, now seen corresponding path program 2 times [2022-09-16 11:13:53,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:53,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341183601] [2022-09-16 11:13:53,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:53,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:54,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341183601] [2022-09-16 11:13:54,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341183601] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062540757] [2022-09-16 11:13:54,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:13:54,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:54,790 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:54,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-09-16 11:13:54,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:13:54,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:54,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 62 conjunts are in the unsatisfiable core [2022-09-16 11:13:54,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:54,943 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 11:13:55,186 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:13:55,187 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 11:13:55,578 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 15 treesize of output 11 [2022-09-16 11:13:55,896 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 11:13:56,119 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 30 treesize of output 30 [2022-09-16 11:13:56,369 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:56,370 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 47 treesize of output 13 [2022-09-16 11:13:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:56,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:56,680 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1643 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~q~0.base)) (.cse2 (* c_~q_front~0 4))) (let ((.cse0 (select .cse1 (+ .cse2 c_~q~0.offset 4)))) (or (< 0 (+ .cse0 1)) (< 0 (+ 2147483649 (select .cse1 (+ .cse2 c_~q~0.offset)) .cse0)))))) is different from false [2022-09-16 11:13:57,859 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:57,859 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 147 treesize of output 99 [2022-09-16 11:13:57,879 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:57,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 465 treesize of output 448 [2022-09-16 11:13:57,885 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 347 treesize of output 267 [2022-09-16 11:13:57,905 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:57,906 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 316 treesize of output 315 [2022-09-16 11:13:59,604 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:59,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062540757] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:59,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:59,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 28] total 79 [2022-09-16 11:13:59,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993666365] [2022-09-16 11:13:59,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:59,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-09-16 11:13:59,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:59,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-09-16 11:13:59,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=441, Invalid=5714, Unknown=11, NotChecked=154, Total=6320 [2022-09-16 11:13:59,606 INFO L87 Difference]: Start difference. First operand 16846 states and 46694 transitions. Second operand has 80 states, 79 states have (on average 4.3544303797468356) internal successors, (344), 80 states have internal predecessors, (344), 0 states have call successors, (0), 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 11:14:03,223 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_1643 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1643) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (let ((.cse1 (select .cse2 (+ .cse3 c_~q~0.offset 4)))) (or (< 0 (+ .cse1 1)) (< 0 (+ 2147483649 (select .cse2 (+ .cse3 c_~q~0.offset)) .cse1)))))))) (and (or (not (<= 0 c_~q_back~0)) (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (not (< c_~q_back~0 c_~n~0)) .cse0) .cse0)) is different from false [2022-09-16 11:14:06,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:06,450 INFO L93 Difference]: Finished difference Result 39938 states and 109759 transitions. [2022-09-16 11:14:06,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-09-16 11:14:06,451 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 79 states have (on average 4.3544303797468356) internal successors, (344), 80 states have internal predecessors, (344), 0 states have call successors, (0), 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 129 [2022-09-16 11:14:06,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:06,539 INFO L225 Difference]: With dead ends: 39938 [2022-09-16 11:14:06,539 INFO L226 Difference]: Without dead ends: 39805 [2022-09-16 11:14:06,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 212 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5515 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1881, Invalid=16473, Unknown=14, NotChecked=538, Total=18906 [2022-09-16 11:14:06,540 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 2554 mSDsluCounter, 7741 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2554 SdHoareTripleChecker+Valid, 7402 SdHoareTripleChecker+Invalid, 4942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2184 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:06,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2554 Valid, 7402 Invalid, 4942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 2570 Invalid, 0 Unknown, 2184 Unchecked, 1.3s Time] [2022-09-16 11:14:06,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39805 states. [2022-09-16 11:14:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39805 to 17354. [2022-09-16 11:14:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17354 states, 17352 states have (on average 2.76803826648225) internal successors, (48031), 17353 states have internal predecessors, (48031), 0 states have call successors, (0), 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 11:14:06,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17354 states to 17354 states and 48031 transitions. [2022-09-16 11:14:06,996 INFO L78 Accepts]: Start accepts. Automaton has 17354 states and 48031 transitions. Word has length 129 [2022-09-16 11:14:06,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:06,996 INFO L495 AbstractCegarLoop]: Abstraction has 17354 states and 48031 transitions. [2022-09-16 11:14:06,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 79 states have (on average 4.3544303797468356) internal successors, (344), 80 states have internal predecessors, (344), 0 states have call successors, (0), 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 11:14:06,996 INFO L276 IsEmpty]: Start isEmpty. Operand 17354 states and 48031 transitions. [2022-09-16 11:14:07,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-09-16 11:14:07,006 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:07,006 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 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 11:14:07,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-09-16 11:14:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:07,207 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:14:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1622734186, now seen corresponding path program 1 times [2022-09-16 11:14:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:07,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676494590] [2022-09-16 11:14:07,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:07,829 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:07,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676494590] [2022-09-16 11:14:07,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676494590] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:07,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746064482] [2022-09-16 11:14:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:07,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:07,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:07,831 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:07,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-09-16 11:14:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:08,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 36 conjunts are in the unsatisfiable core [2022-09-16 11:14:08,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:08,618 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 11:14:08,641 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:08,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:08,729 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:14:08,729 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 26 treesize of output 17 [2022-09-16 11:14:09,429 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:09,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746064482] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:09,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:09,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 55 [2022-09-16 11:14:09,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614841005] [2022-09-16 11:14:09,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:09,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-09-16 11:14:09,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:09,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-09-16 11:14:09,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=562, Invalid=2518, Unknown=0, NotChecked=0, Total=3080 [2022-09-16 11:14:09,431 INFO L87 Difference]: Start difference. First operand 17354 states and 48031 transitions. Second operand has 56 states, 55 states have (on average 5.8545454545454545) internal successors, (322), 56 states have internal predecessors, (322), 0 states have call successors, (0), 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 11:14:12,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:12,611 INFO L93 Difference]: Finished difference Result 42309 states and 117108 transitions. [2022-09-16 11:14:12,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-09-16 11:14:12,612 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 5.8545454545454545) internal successors, (322), 56 states have internal predecessors, (322), 0 states have call successors, (0), 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 136 [2022-09-16 11:14:12,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:12,704 INFO L225 Difference]: With dead ends: 42309 [2022-09-16 11:14:12,704 INFO L226 Difference]: Without dead ends: 41220 [2022-09-16 11:14:12,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4119 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1863, Invalid=10347, Unknown=0, NotChecked=0, Total=12210 [2022-09-16 11:14:12,705 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1466 mSDsluCounter, 7590 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 7531 SdHoareTripleChecker+Invalid, 3167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:12,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 7531 Invalid, 3167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-09-16 11:14:12,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41220 states. [2022-09-16 11:14:13,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41220 to 22985. [2022-09-16 11:14:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22985 states, 22979 states have (on average 2.8013403542364768) internal successors, (64372), 22984 states have internal predecessors, (64372), 0 states have call successors, (0), 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 11:14:13,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22985 states to 22985 states and 64372 transitions. [2022-09-16 11:14:13,361 INFO L78 Accepts]: Start accepts. Automaton has 22985 states and 64372 transitions. Word has length 136 [2022-09-16 11:14:13,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:13,362 INFO L495 AbstractCegarLoop]: Abstraction has 22985 states and 64372 transitions. [2022-09-16 11:14:13,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 5.8545454545454545) internal successors, (322), 56 states have internal predecessors, (322), 0 states have call successors, (0), 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 11:14:13,362 INFO L276 IsEmpty]: Start isEmpty. Operand 22985 states and 64372 transitions. [2022-09-16 11:14:13,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-09-16 11:14:13,373 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:13,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:13,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-09-16 11:14:13,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:13,574 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:14:13,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:13,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1094545757, now seen corresponding path program 6 times [2022-09-16 11:14:13,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:13,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195755406] [2022-09-16 11:14:13,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:13,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:13,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:14,891 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:14,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:14,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195755406] [2022-09-16 11:14:14,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195755406] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:14,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801528036] [2022-09-16 11:14:14,892 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:14:14,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:14,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:14,893 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:14,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-09-16 11:14:15,172 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-09-16 11:14:15,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:15,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 28 conjunts are in the unsatisfiable core [2022-09-16 11:14:15,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:15,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:14:15,579 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 11:14:15,809 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:15,809 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 47 treesize of output 13 [2022-09-16 11:14:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:14:15,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:16,096 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1712 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1712) c_~q~0.base))) (or (< (let ((.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)))) 2147483648) (not (= (select .cse0 (+ c_~q~0.offset (* 4 c_~q_back~0))) 1))))) is different from false [2022-09-16 11:14:16,153 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:16,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 96 treesize of output 114 [2022-09-16 11:14:16,167 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:16,168 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 54 [2022-09-16 11:14:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 58 trivial. 1 not checked. [2022-09-16 11:14:16,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801528036] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:16,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:16,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 15, 15] total 55 [2022-09-16 11:14:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526423575] [2022-09-16 11:14:16,755 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:16,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-09-16 11:14:16,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-09-16 11:14:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2790, Unknown=1, NotChecked=106, Total=3080 [2022-09-16 11:14:16,756 INFO L87 Difference]: Start difference. First operand 22985 states and 64372 transitions. Second operand has 56 states, 55 states have (on average 5.472727272727273) internal successors, (301), 56 states have internal predecessors, (301), 0 states have call successors, (0), 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 11:14:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:23,754 INFO L93 Difference]: Finished difference Result 51638 states and 142399 transitions. [2022-09-16 11:14:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-09-16 11:14:23,755 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 5.472727272727273) internal successors, (301), 56 states have internal predecessors, (301), 0 states have call successors, (0), 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 137 [2022-09-16 11:14:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:23,880 INFO L225 Difference]: With dead ends: 51638 [2022-09-16 11:14:23,880 INFO L226 Difference]: Without dead ends: 51095 [2022-09-16 11:14:23,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 248 SyntacticMatches, 5 SemanticMatches, 138 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4798 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2013, Invalid=17172, Unknown=1, NotChecked=274, Total=19460 [2022-09-16 11:14:23,882 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 2393 mSDsluCounter, 7082 mSDsCounter, 0 mSdLazyCounter, 3619 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2393 SdHoareTripleChecker+Valid, 6854 SdHoareTripleChecker+Invalid, 4138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:23,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2393 Valid, 6854 Invalid, 4138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3619 Invalid, 0 Unknown, 326 Unchecked, 1.8s Time] [2022-09-16 11:14:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51095 states. [2022-09-16 11:14:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51095 to 25839. [2022-09-16 11:14:24,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25839 states, 25833 states have (on average 2.8026168079588123) internal successors, (72400), 25838 states have internal predecessors, (72400), 0 states have call successors, (0), 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 11:14:24,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25839 states to 25839 states and 72400 transitions. [2022-09-16 11:14:24,622 INFO L78 Accepts]: Start accepts. Automaton has 25839 states and 72400 transitions. Word has length 137 [2022-09-16 11:14:24,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:24,622 INFO L495 AbstractCegarLoop]: Abstraction has 25839 states and 72400 transitions. [2022-09-16 11:14:24,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 5.472727272727273) internal successors, (301), 56 states have internal predecessors, (301), 0 states have call successors, (0), 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 11:14:24,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25839 states and 72400 transitions. [2022-09-16 11:14:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-09-16 11:14:24,635 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:24,635 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:24,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-09-16 11:14:24,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-09-16 11:14:24,836 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:14:24,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:24,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1592679027, now seen corresponding path program 7 times [2022-09-16 11:14:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:24,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036666345] [2022-09-16 11:14:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:24,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036666345] [2022-09-16 11:14:26,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036666345] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:26,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190008271] [2022-09-16 11:14:26,349 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:14:26,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:26,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:26,350 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:26,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-09-16 11:14:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:26,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 73 conjunts are in the unsatisfiable core [2022-09-16 11:14:26,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:26,517 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 11:14:26,749 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:14:26,750 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 11:14:27,007 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 15 treesize of output 11 [2022-09-16 11:14:27,143 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 15 treesize of output 11 [2022-09-16 11:14:27,288 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 15 treesize of output 11 [2022-09-16 11:14:27,618 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 11:14:27,680 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 11:14:28,068 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:28,068 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 49 treesize of output 13 [2022-09-16 11:14:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:28,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:30,189 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:30,190 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 3 case distinctions, treesize of input 184 treesize of output 110 [2022-09-16 11:14:30,214 INFO L356 Elim1Store]: treesize reduction 17, result has 67.9 percent of original size [2022-09-16 11:14:30,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 538 treesize of output 505 [2022-09-16 11:14:30,239 INFO L356 Elim1Store]: treesize reduction 24, result has 54.7 percent of original size [2022-09-16 11:14:30,240 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 470 treesize of output 394 [2022-09-16 11:14:30,263 INFO L356 Elim1Store]: treesize reduction 24, result has 54.7 percent of original size [2022-09-16 11:14:30,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 366 treesize of output 342 [2022-09-16 11:14:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:31,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190008271] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:31,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:31,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 29] total 82 [2022-09-16 11:14:31,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876067695] [2022-09-16 11:14:31,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:31,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-09-16 11:14:31,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-09-16 11:14:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1072, Invalid=5650, Unknown=84, NotChecked=0, Total=6806 [2022-09-16 11:14:31,288 INFO L87 Difference]: Start difference. First operand 25839 states and 72400 transitions. Second operand has 83 states, 82 states have (on average 4.341463414634147) internal successors, (356), 83 states have internal predecessors, (356), 0 states have call successors, (0), 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 11:14:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:49,496 INFO L93 Difference]: Finished difference Result 66791 states and 185214 transitions. [2022-09-16 11:14:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-09-16 11:14:49,498 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 82 states have (on average 4.341463414634147) internal successors, (356), 83 states have internal predecessors, (356), 0 states have call successors, (0), 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 137 [2022-09-16 11:14:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:49,653 INFO L225 Difference]: With dead ends: 66791 [2022-09-16 11:14:49,653 INFO L226 Difference]: Without dead ends: 66115 [2022-09-16 11:14:49,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7884 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=3869, Invalid=21326, Unknown=245, NotChecked=0, Total=25440 [2022-09-16 11:14:49,654 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2525 mSDsluCounter, 7420 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 7180 SdHoareTripleChecker+Invalid, 5830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2970 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:49,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2525 Valid, 7180 Invalid, 5830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2753 Invalid, 0 Unknown, 2970 Unchecked, 1.8s Time] [2022-09-16 11:14:49,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66115 states. [2022-09-16 11:14:50,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66115 to 27434. [2022-09-16 11:14:50,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27434 states, 27428 states have (on average 2.7937509114773222) internal successors, (76627), 27433 states have internal predecessors, (76627), 0 states have call successors, (0), 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 11:14:50,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27434 states to 27434 states and 76627 transitions. [2022-09-16 11:14:50,591 INFO L78 Accepts]: Start accepts. Automaton has 27434 states and 76627 transitions. Word has length 137 [2022-09-16 11:14:50,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:50,592 INFO L495 AbstractCegarLoop]: Abstraction has 27434 states and 76627 transitions. [2022-09-16 11:14:50,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 82 states have (on average 4.341463414634147) internal successors, (356), 83 states have internal predecessors, (356), 0 states have call successors, (0), 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 11:14:50,592 INFO L276 IsEmpty]: Start isEmpty. Operand 27434 states and 76627 transitions. [2022-09-16 11:14:50,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-09-16 11:14:50,607 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:50,607 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:50,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-09-16 11:14:50,821 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:14:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:50,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1784318155, now seen corresponding path program 6 times [2022-09-16 11:14:50,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:50,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781424671] [2022-09-16 11:14:50,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:50,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:52,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781424671] [2022-09-16 11:14:52,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781424671] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:52,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031117362] [2022-09-16 11:14:52,331 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:14:52,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:52,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:52,333 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:52,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-09-16 11:14:52,505 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-09-16 11:14:52,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:52,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:14:52,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:53,035 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:14:53,035 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 11:14:53,076 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:14:53,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:53,257 INFO L356 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-09-16 11:14:53,258 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 19 [2022-09-16 11:14:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:14:53,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031117362] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:53,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:53,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8, 8] total 36 [2022-09-16 11:14:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736753466] [2022-09-16 11:14:53,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:53,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-09-16 11:14:53,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-09-16 11:14:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1206, Unknown=0, NotChecked=0, Total=1332 [2022-09-16 11:14:53,546 INFO L87 Difference]: Start difference. First operand 27434 states and 76627 transitions. Second operand has 37 states, 36 states have (on average 6.277777777777778) internal successors, (226), 37 states have internal predecessors, (226), 0 states have call successors, (0), 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 11:14:58,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:58,473 INFO L93 Difference]: Finished difference Result 46979 states and 129658 transitions. [2022-09-16 11:14:58,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:14:58,474 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 6.277777777777778) internal successors, (226), 37 states have internal predecessors, (226), 0 states have call successors, (0), 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 138 [2022-09-16 11:14:58,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:58,576 INFO L225 Difference]: With dead ends: 46979 [2022-09-16 11:14:58,576 INFO L226 Difference]: Without dead ends: 46356 [2022-09-16 11:14:58,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 265 SyntacticMatches, 2 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=647, Invalid=5205, Unknown=0, NotChecked=0, Total=5852 [2022-09-16 11:14:58,577 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 909 mSDsluCounter, 8022 mSDsCounter, 0 mSdLazyCounter, 2626 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 7834 SdHoareTripleChecker+Invalid, 3281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 622 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:58,577 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 7834 Invalid, 3281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2626 Invalid, 0 Unknown, 622 Unchecked, 2.0s Time] [2022-09-16 11:14:58,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46356 states. [2022-09-16 11:14:59,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46356 to 37728. [2022-09-16 11:14:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37728 states, 37722 states have (on average 2.800699856847463) internal successors, (105648), 37727 states have internal predecessors, (105648), 0 states have call successors, (0), 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 11:14:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37728 states to 37728 states and 105648 transitions. [2022-09-16 11:14:59,566 INFO L78 Accepts]: Start accepts. Automaton has 37728 states and 105648 transitions. Word has length 138 [2022-09-16 11:14:59,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:59,567 INFO L495 AbstractCegarLoop]: Abstraction has 37728 states and 105648 transitions. [2022-09-16 11:14:59,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 6.277777777777778) internal successors, (226), 37 states have internal predecessors, (226), 0 states have call successors, (0), 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 11:14:59,567 INFO L276 IsEmpty]: Start isEmpty. Operand 37728 states and 105648 transitions. [2022-09-16 11:14:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-09-16 11:14:59,632 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:59,632 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:59,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:59,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:59,856 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:14:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:59,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1409262139, now seen corresponding path program 3 times [2022-09-16 11:14:59,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:59,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434143341] [2022-09-16 11:14:59,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:01,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:01,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434143341] [2022-09-16 11:15:01,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434143341] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:01,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356593473] [2022-09-16 11:15:01,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:15:01,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:01,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:01,237 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:01,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-09-16 11:15:01,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-16 11:15:01,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:01,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 36 conjunts are in the unsatisfiable core [2022-09-16 11:15:01,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:01,411 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 11:15:01,525 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:15:01,526 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 11:15:02,132 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 30 treesize of output 30 [2022-09-16 11:15:02,611 INFO L356 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-09-16 11:15:02,612 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2022-09-16 11:15:02,657 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:15:02,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:03,056 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1831 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1831) c_~q~0.base)) (.cse2 (* c_~q_front~0 4))) (let ((.cse0 (select .cse1 (+ .cse2 c_~q~0.offset)))) (or (< 0 (+ .cse0 1)) (< 0 (+ 2147483649 .cse0 (select .cse1 (+ .cse2 c_~q~0.offset 4)))))))) (forall ((v_ArrVal_1831 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1831) c_~q~0.base)) (.cse5 (* c_~q_front~0 4))) (let ((.cse3 (select .cse4 (+ .cse5 c_~q~0.offset 4)))) (or (< 0 (+ 2147483650 .cse3)) (< 0 (+ 2147483649 (select .cse4 (+ .cse5 c_~q~0.offset)) .cse3))))))) is different from false [2022-09-16 11:15:03,270 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:03,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 183 [2022-09-16 11:15:03,279 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:03,280 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 122 treesize of output 103 [2022-09-16 11:15:03,286 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:03,286 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 103 treesize of output 83 [2022-09-16 11:15:03,928 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:15:03,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356593473] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:03,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:03,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 16] total 50 [2022-09-16 11:15:03,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329340904] [2022-09-16 11:15:03,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:03,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-09-16 11:15:03,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:03,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-09-16 11:15:03,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2271, Unknown=1, NotChecked=96, Total=2550 [2022-09-16 11:15:03,930 INFO L87 Difference]: Start difference. First operand 37728 states and 105648 transitions. Second operand has 51 states, 50 states have (on average 5.38) internal successors, (269), 51 states have internal predecessors, (269), 0 states have call successors, (0), 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 11:15:10,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:10,764 INFO L93 Difference]: Finished difference Result 81106 states and 228215 transitions. [2022-09-16 11:15:10,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-09-16 11:15:10,764 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.38) internal successors, (269), 51 states have internal predecessors, (269), 0 states have call successors, (0), 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 138 [2022-09-16 11:15:10,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:11,000 INFO L225 Difference]: With dead ends: 81106 [2022-09-16 11:15:11,000 INFO L226 Difference]: Without dead ends: 81106 [2022-09-16 11:15:11,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 265 SyntacticMatches, 13 SemanticMatches, 128 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5371 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1383, Invalid=15126, Unknown=7, NotChecked=254, Total=16770 [2022-09-16 11:15:11,001 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 1702 mSDsluCounter, 8991 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 9150 SdHoareTripleChecker+Invalid, 3615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1474 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:11,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 9150 Invalid, 3615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 2067 Invalid, 0 Unknown, 1474 Unchecked, 1.5s Time] [2022-09-16 11:15:11,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81106 states. [2022-09-16 11:15:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81106 to 40449. [2022-09-16 11:15:12,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40449 states, 40443 states have (on average 2.801720940583043) internal successors, (113310), 40448 states have internal predecessors, (113310), 0 states have call successors, (0), 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 11:15:12,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40449 states to 40449 states and 113310 transitions. [2022-09-16 11:15:12,628 INFO L78 Accepts]: Start accepts. Automaton has 40449 states and 113310 transitions. Word has length 138 [2022-09-16 11:15:12,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:12,628 INFO L495 AbstractCegarLoop]: Abstraction has 40449 states and 113310 transitions. [2022-09-16 11:15:12,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.38) internal successors, (269), 51 states have internal predecessors, (269), 0 states have call successors, (0), 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 11:15:12,628 INFO L276 IsEmpty]: Start isEmpty. Operand 40449 states and 113310 transitions. [2022-09-16 11:15:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:15:12,652 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:12,652 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:15:12,672 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:12,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:12,862 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:15:12,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:12,863 INFO L85 PathProgramCache]: Analyzing trace with hash -888063317, now seen corresponding path program 1 times [2022-09-16 11:15:12,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:12,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71263013] [2022-09-16 11:15:12,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:12,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:16,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:16,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71263013] [2022-09-16 11:15:16,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71263013] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:16,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766668101] [2022-09-16 11:15:16,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:16,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:16,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:16,702 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:16,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-09-16 11:15:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:16,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 33 conjunts are in the unsatisfiable core [2022-09-16 11:15:16,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:17,701 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 11:15:17,764 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:15:17,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:18,081 INFO L356 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-09-16 11:15:18,082 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 19 [2022-09-16 11:15:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:15:18,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766668101] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:18,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:18,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 15, 8] total 55 [2022-09-16 11:15:18,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651007638] [2022-09-16 11:15:18,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:18,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-09-16 11:15:18,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:18,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-09-16 11:15:18,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=2895, Unknown=0, NotChecked=0, Total=3080 [2022-09-16 11:15:18,253 INFO L87 Difference]: Start difference. First operand 40449 states and 113310 transitions. Second operand has 56 states, 55 states have (on average 5.036363636363636) internal successors, (277), 56 states have internal predecessors, (277), 0 states have call successors, (0), 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 11:15:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:32,909 INFO L93 Difference]: Finished difference Result 75457 states and 208745 transitions. [2022-09-16 11:15:32,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-09-16 11:15:32,909 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 5.036363636363636) internal successors, (277), 56 states have internal predecessors, (277), 0 states have call successors, (0), 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 11:15:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:33,105 INFO L225 Difference]: With dead ends: 75457 [2022-09-16 11:15:33,105 INFO L226 Difference]: Without dead ends: 73351 [2022-09-16 11:15:33,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 262 SyntacticMatches, 1 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5594 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=1667, Invalid=17793, Unknown=0, NotChecked=0, Total=19460 [2022-09-16 11:15:33,107 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1924 mSDsluCounter, 8012 mSDsCounter, 0 mSdLazyCounter, 4561 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 7771 SdHoareTripleChecker+Invalid, 4752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 4561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:33,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1924 Valid, 7771 Invalid, 4752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 4561 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-09-16 11:15:33,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73351 states. [2022-09-16 11:15:34,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73351 to 22953. [2022-09-16 11:15:34,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22953 states, 22947 states have (on average 2.8066849697128164) internal successors, (64405), 22952 states have internal predecessors, (64405), 0 states have call successors, (0), 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 11:15:34,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22953 states to 22953 states and 64405 transitions. [2022-09-16 11:15:34,196 INFO L78 Accepts]: Start accepts. Automaton has 22953 states and 64405 transitions. Word has length 141 [2022-09-16 11:15:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:34,196 INFO L495 AbstractCegarLoop]: Abstraction has 22953 states and 64405 transitions. [2022-09-16 11:15:34,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 5.036363636363636) internal successors, (277), 56 states have internal predecessors, (277), 0 states have call successors, (0), 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 11:15:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 22953 states and 64405 transitions. [2022-09-16 11:15:34,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:15:34,208 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:34,208 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:15:34,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-09-16 11:15:34,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-09-16 11:15:34,409 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:15:34,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:34,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2018501925, now seen corresponding path program 2 times [2022-09-16 11:15:34,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:34,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173490934] [2022-09-16 11:15:34,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:34,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:37,304 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:37,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:37,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173490934] [2022-09-16 11:15:37,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173490934] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:37,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631794243] [2022-09-16 11:15:37,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:15:37,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:37,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:37,306 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:37,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-09-16 11:15:37,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:15:37,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:37,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 64 conjunts are in the unsatisfiable core [2022-09-16 11:15:37,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:38,565 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 11:15:39,183 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 11:15:39,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:15:39,586 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 30 treesize of output 30 [2022-09-16 11:15:40,278 INFO L356 Elim1Store]: treesize reduction 46, result has 13.2 percent of original size [2022-09-16 11:15:40,278 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 19 [2022-09-16 11:15:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:40,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:40,794 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1907 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1907) c_~q~0.base)) (.cse2 (* c_~q_front~0 4))) (let ((.cse0 (select .cse1 (+ .cse2 c_~q~0.offset 4)))) (or (< 0 (+ .cse0 1)) (< 0 (+ 2147483649 (select .cse1 (+ .cse2 c_~q~0.offset)) .cse0)))))) is different from false [2022-09-16 11:15:42,412 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:42,413 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 147 treesize of output 99 [2022-09-16 11:15:42,442 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:42,442 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 264 [2022-09-16 11:15:42,449 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 123 [2022-09-16 11:15:42,476 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:42,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 120 treesize of output 139 [2022-09-16 11:15:45,130 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:45,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631794243] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:45,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:45,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 31] total 87 [2022-09-16 11:15:45,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541320747] [2022-09-16 11:15:45,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:45,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-09-16 11:15:45,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:45,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-09-16 11:15:45,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=6878, Unknown=7, NotChecked=170, Total=7656 [2022-09-16 11:15:45,132 INFO L87 Difference]: Start difference. First operand 22953 states and 64405 transitions. Second operand has 88 states, 87 states have (on average 4.022988505747127) internal successors, (350), 88 states have internal predecessors, (350), 0 states have call successors, (0), 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 11:15:56,380 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_ArrVal_1907 (Array Int Int))) (let ((.cse2 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1907) c_~q~0.base)) (.cse3 (* c_~q_front~0 4))) (let ((.cse1 (select .cse2 (+ .cse3 c_~q~0.offset 4)))) (or (< 0 (+ .cse1 1)) (< 0 (+ 2147483649 (select .cse2 (+ .cse3 c_~q~0.offset)) .cse1)))))))) (and .cse0 (or .cse0 (not (<= 0 c_~q_back~0)) (not (= (select (select |c_#memory_int| c_~q~0.base) (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (not (< c_~q_back~0 c_~n~0))))) is different from false [2022-09-16 11:16:03,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:03,465 INFO L93 Difference]: Finished difference Result 65161 states and 185201 transitions. [2022-09-16 11:16:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-09-16 11:16:03,465 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 87 states have (on average 4.022988505747127) internal successors, (350), 88 states have internal predecessors, (350), 0 states have call successors, (0), 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 11:16:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:03,656 INFO L225 Difference]: With dead ends: 65161 [2022-09-16 11:16:03,656 INFO L226 Difference]: Without dead ends: 65161 [2022-09-16 11:16:03,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 237 SyntacticMatches, 26 SemanticMatches, 173 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 9965 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=2991, Invalid=26752, Unknown=21, NotChecked=686, Total=30450 [2022-09-16 11:16:03,657 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 2862 mSDsluCounter, 11549 mSDsCounter, 0 mSdLazyCounter, 3229 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2862 SdHoareTripleChecker+Valid, 11539 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 3229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2011 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:03,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2862 Valid, 11539 Invalid, 5503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 3229 Invalid, 0 Unknown, 2011 Unchecked, 2.7s Time] [2022-09-16 11:16:03,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65161 states. [2022-09-16 11:16:04,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65161 to 24065. [2022-09-16 11:16:04,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24065 states, 24059 states have (on average 2.8049794255787854) internal successors, (67485), 24064 states have internal predecessors, (67485), 0 states have call successors, (0), 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 11:16:04,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24065 states to 24065 states and 67485 transitions. [2022-09-16 11:16:04,362 INFO L78 Accepts]: Start accepts. Automaton has 24065 states and 67485 transitions. Word has length 141 [2022-09-16 11:16:04,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:04,362 INFO L495 AbstractCegarLoop]: Abstraction has 24065 states and 67485 transitions. [2022-09-16 11:16:04,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 87 states have (on average 4.022988505747127) internal successors, (350), 88 states have internal predecessors, (350), 0 states have call successors, (0), 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 11:16:04,362 INFO L276 IsEmpty]: Start isEmpty. Operand 24065 states and 67485 transitions. [2022-09-16 11:16:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:16:04,373 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:04,374 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:04,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-09-16 11:16:04,575 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:16:04,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -160422259, now seen corresponding path program 3 times [2022-09-16 11:16:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:04,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958098343] [2022-09-16 11:16:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:05,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:05,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958098343] [2022-09-16 11:16:05,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958098343] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:05,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631589983] [2022-09-16 11:16:05,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:16:05,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:05,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:05,746 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:05,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-09-16 11:16:05,917 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-09-16 11:16:05,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:05,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 36 conjunts are in the unsatisfiable core [2022-09-16 11:16:05,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:05,924 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 11:16:06,028 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:16:06,029 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 11:16:06,632 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 30 treesize of output 30 [2022-09-16 11:16:07,154 INFO L356 Elim1Store]: treesize reduction 24, result has 11.1 percent of original size [2022-09-16 11:16:07,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 13 [2022-09-16 11:16:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:07,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:07,864 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_1945 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1945) c_~q~0.base)) (.cse1 (* c_~q_front~0 4))) (let ((.cse2 (select .cse0 (+ .cse1 c_~q~0.offset 4)))) (or (< 0 (+ 2147483649 (select .cse0 (+ .cse1 c_~q~0.offset)) .cse2)) (< 0 (+ 2147483650 .cse2)))))) (forall ((v_ArrVal_1945 (Array Int Int))) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1945) c_~q~0.base)) (.cse5 (* c_~q_front~0 4))) (let ((.cse3 (select .cse4 (+ .cse5 c_~q~0.offset)))) (or (< 0 (+ 2147483649 .cse3 (select .cse4 (+ .cse5 c_~q~0.offset 4)))) (< 0 (+ .cse3 1))))))) is different from false [2022-09-16 11:16:08,116 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:08,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 199 treesize of output 183 [2022-09-16 11:16:08,125 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:08,126 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 122 treesize of output 103 [2022-09-16 11:16:08,133 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:08,133 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 103 treesize of output 83 [2022-09-16 11:16:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:08,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1631589983] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:08,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:08,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 16, 16] total 50 [2022-09-16 11:16:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211551132] [2022-09-16 11:16:08,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:08,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-09-16 11:16:08,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:08,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-09-16 11:16:08,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2273, Unknown=1, NotChecked=96, Total=2550 [2022-09-16 11:16:08,812 INFO L87 Difference]: Start difference. First operand 24065 states and 67485 transitions. Second operand has 51 states, 50 states have (on average 5.56) internal successors, (278), 51 states have internal predecessors, (278), 0 states have call successors, (0), 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 11:16:15,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:15,044 INFO L93 Difference]: Finished difference Result 55207 states and 151825 transitions. [2022-09-16 11:16:15,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-09-16 11:16:15,045 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.56) internal successors, (278), 51 states have internal predecessors, (278), 0 states have call successors, (0), 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 11:16:15,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:15,184 INFO L225 Difference]: With dead ends: 55207 [2022-09-16 11:16:15,184 INFO L226 Difference]: Without dead ends: 55207 [2022-09-16 11:16:15,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 394 GetRequests, 266 SyntacticMatches, 15 SemanticMatches, 113 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3850 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1192, Invalid=11693, Unknown=1, NotChecked=224, Total=13110 [2022-09-16 11:16:15,186 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 2386 mSDsluCounter, 6739 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 6669 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1370 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:15,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2386 Valid, 6669 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1468 Invalid, 0 Unknown, 1370 Unchecked, 1.1s Time] [2022-09-16 11:16:15,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55207 states. [2022-09-16 11:16:15,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55207 to 25370. [2022-09-16 11:16:15,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25370 states, 25364 states have (on average 2.8013720233401673) internal successors, (71054), 25369 states have internal predecessors, (71054), 0 states have call successors, (0), 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 11:16:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25370 states to 25370 states and 71054 transitions. [2022-09-16 11:16:15,990 INFO L78 Accepts]: Start accepts. Automaton has 25370 states and 71054 transitions. Word has length 141 [2022-09-16 11:16:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:15,991 INFO L495 AbstractCegarLoop]: Abstraction has 25370 states and 71054 transitions. [2022-09-16 11:16:15,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.56) internal successors, (278), 51 states have internal predecessors, (278), 0 states have call successors, (0), 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 11:16:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 25370 states and 71054 transitions. [2022-09-16 11:16:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:16:16,007 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:16,007 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:16,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:16,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:16,233 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:16:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:16,234 INFO L85 PathProgramCache]: Analyzing trace with hash -794520601, now seen corresponding path program 4 times [2022-09-16 11:16:16,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:16,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976198679] [2022-09-16 11:16:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:16,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:16,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:17,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976198679] [2022-09-16 11:16:17,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976198679] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:17,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690796494] [2022-09-16 11:16:17,555 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:16:17,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:17,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:17,556 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:17,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-09-16 11:16:17,703 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:16:17,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:17,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:16:17,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:18,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:16:18,813 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 11:16:19,174 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:16:19,174 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 11:16:19,404 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:16:19,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:19,669 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1982 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1982) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 4)) 1))) is different from false [2022-09-16 11:16:19,685 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:19,685 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 48 treesize of output 45 [2022-09-16 11:16:19,691 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 12 treesize of output 5 [2022-09-16 11:16:20,513 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:20,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690796494] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:20,514 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:20,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 15] total 59 [2022-09-16 11:16:20,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81259290] [2022-09-16 11:16:20,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:20,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-09-16 11:16:20,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:20,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-09-16 11:16:20,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=3228, Unknown=1, NotChecked=114, Total=3540 [2022-09-16 11:16:20,516 INFO L87 Difference]: Start difference. First operand 25370 states and 71054 transitions. Second operand has 60 states, 59 states have (on average 5.711864406779661) internal successors, (337), 60 states have internal predecessors, (337), 0 states have call successors, (0), 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 11:16:27,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:27,180 INFO L93 Difference]: Finished difference Result 42133 states and 117809 transitions. [2022-09-16 11:16:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-09-16 11:16:27,180 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 5.711864406779661) internal successors, (337), 60 states have internal predecessors, (337), 0 states have call successors, (0), 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 11:16:27,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:27,274 INFO L225 Difference]: With dead ends: 42133 [2022-09-16 11:16:27,275 INFO L226 Difference]: Without dead ends: 42133 [2022-09-16 11:16:27,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 256 SyntacticMatches, 8 SemanticMatches, 108 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2999 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=1120, Invalid=10655, Unknown=1, NotChecked=214, Total=11990 [2022-09-16 11:16:27,276 INFO L413 NwaCegarLoop]: 222 mSDtfsCounter, 2260 mSDsluCounter, 7233 mSDsCounter, 0 mSdLazyCounter, 2470 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2260 SdHoareTripleChecker+Valid, 7261 SdHoareTripleChecker+Invalid, 3692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 2470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1117 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:27,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2260 Valid, 7261 Invalid, 3692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 2470 Invalid, 0 Unknown, 1117 Unchecked, 1.7s Time] [2022-09-16 11:16:27,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42133 states. [2022-09-16 11:16:27,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42133 to 26091. [2022-09-16 11:16:27,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26091 states, 26085 states have (on average 2.8021468276787425) internal successors, (73094), 26090 states have internal predecessors, (73094), 0 states have call successors, (0), 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 11:16:27,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26091 states to 26091 states and 73094 transitions. [2022-09-16 11:16:27,922 INFO L78 Accepts]: Start accepts. Automaton has 26091 states and 73094 transitions. Word has length 141 [2022-09-16 11:16:27,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:27,922 INFO L495 AbstractCegarLoop]: Abstraction has 26091 states and 73094 transitions. [2022-09-16 11:16:27,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 5.711864406779661) internal successors, (337), 60 states have internal predecessors, (337), 0 states have call successors, (0), 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 11:16:27,922 INFO L276 IsEmpty]: Start isEmpty. Operand 26091 states and 73094 transitions. [2022-09-16 11:16:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:16:27,935 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:27,936 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:27,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:28,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-09-16 11:16:28,137 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:16:28,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:28,137 INFO L85 PathProgramCache]: Analyzing trace with hash 178579683, now seen corresponding path program 6 times [2022-09-16 11:16:28,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:28,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121265634] [2022-09-16 11:16:28,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:28,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:29,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:29,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121265634] [2022-09-16 11:16:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121265634] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:29,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247110732] [2022-09-16 11:16:29,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:16:29,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:29,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:29,094 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:29,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-09-16 11:16:29,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-09-16 11:16:29,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:29,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 56 conjunts are in the unsatisfiable core [2022-09-16 11:16:29,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:29,316 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 11:16:29,625 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:16:29,626 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 11:16:30,144 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 15 treesize of output 11 [2022-09-16 11:16:30,593 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 11:16:31,013 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 19 treesize of output 21 [2022-09-16 11:16:31,397 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 11:16:31,449 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:31,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:31,792 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2019 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2019) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset 8)) 1)) is different from false [2022-09-16 11:16:33,267 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:33,268 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 59 treesize of output 47 [2022-09-16 11:16:33,279 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:33,280 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 188 treesize of output 173 [2022-09-16 11:16:33,286 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 136 treesize of output 108 [2022-09-16 11:16:33,297 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:33,297 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 133 treesize of output 124 [2022-09-16 11:16:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:35,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247110732] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:35,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:35,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 29, 29] total 83 [2022-09-16 11:16:35,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802992113] [2022-09-16 11:16:35,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:35,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2022-09-16 11:16:35,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:35,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2022-09-16 11:16:35,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=6308, Unknown=15, NotChecked=162, Total=6972 [2022-09-16 11:16:35,137 INFO L87 Difference]: Start difference. First operand 26091 states and 73094 transitions. Second operand has 84 states, 83 states have (on average 4.650602409638554) internal successors, (386), 84 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:16:46,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:46,265 INFO L93 Difference]: Finished difference Result 38604 states and 107369 transitions. [2022-09-16 11:16:46,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-09-16 11:16:46,266 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 83 states have (on average 4.650602409638554) internal successors, (386), 84 states have internal predecessors, (386), 0 states have call successors, (0), 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 143 [2022-09-16 11:16:46,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:46,373 INFO L225 Difference]: With dead ends: 38604 [2022-09-16 11:16:46,374 INFO L226 Difference]: Without dead ends: 38490 [2022-09-16 11:16:46,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 232 SyntacticMatches, 9 SemanticMatches, 149 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 5788 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2374, Invalid=19957, Unknown=23, NotChecked=296, Total=22650 [2022-09-16 11:16:46,375 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 3099 mSDsluCounter, 12355 mSDsCounter, 0 mSdLazyCounter, 4624 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3099 SdHoareTripleChecker+Valid, 11684 SdHoareTripleChecker+Invalid, 7290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 4624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2491 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:46,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3099 Valid, 11684 Invalid, 7290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 4624 Invalid, 0 Unknown, 2491 Unchecked, 3.1s Time] [2022-09-16 11:16:46,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38490 states. [2022-09-16 11:16:46,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38490 to 30886. [2022-09-16 11:16:47,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30886 states, 30880 states have (on average 2.810945595854922) internal successors, (86802), 30885 states have internal predecessors, (86802), 0 states have call successors, (0), 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 11:16:47,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30886 states to 30886 states and 86802 transitions. [2022-09-16 11:16:47,080 INFO L78 Accepts]: Start accepts. Automaton has 30886 states and 86802 transitions. Word has length 143 [2022-09-16 11:16:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:47,081 INFO L495 AbstractCegarLoop]: Abstraction has 30886 states and 86802 transitions. [2022-09-16 11:16:47,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 83 states have (on average 4.650602409638554) internal successors, (386), 84 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:16:47,081 INFO L276 IsEmpty]: Start isEmpty. Operand 30886 states and 86802 transitions. [2022-09-16 11:16:47,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:16:47,095 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:47,096 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:47,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-09-16 11:16:47,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:47,296 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:16:47,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:47,297 INFO L85 PathProgramCache]: Analyzing trace with hash 4068489, now seen corresponding path program 7 times [2022-09-16 11:16:47,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:47,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527234822] [2022-09-16 11:16:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:47,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:47,969 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:47,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:47,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527234822] [2022-09-16 11:16:47,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527234822] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:47,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402244440] [2022-09-16 11:16:47,970 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:16:47,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:47,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:47,971 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:47,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-09-16 11:16:48,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:48,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 52 conjunts are in the unsatisfiable core [2022-09-16 11:16:48,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:48,990 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 11:16:49,555 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 11:16:49,895 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 11:16:50,321 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 11:16:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:50,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:52,080 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:52,080 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 62 treesize of output 50 [2022-09-16 11:16:52,089 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:16:52,090 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 316 treesize of output 287 [2022-09-16 11:16:52,100 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:16:52,100 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 280 treesize of output 224 [2022-09-16 11:16:52,109 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:16:52,109 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 224 treesize of output 196 [2022-09-16 11:16:53,021 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:53,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402244440] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:53,021 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:53,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 26] total 78 [2022-09-16 11:16:53,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624299414] [2022-09-16 11:16:53,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:53,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-09-16 11:16:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:53,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-09-16 11:16:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=765, Invalid=5338, Unknown=59, NotChecked=0, Total=6162 [2022-09-16 11:16:53,023 INFO L87 Difference]: Start difference. First operand 30886 states and 86802 transitions. Second operand has 79 states, 78 states have (on average 4.794871794871795) internal successors, (374), 79 states have internal predecessors, (374), 0 states have call successors, (0), 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 11:17:02,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:02,909 INFO L93 Difference]: Finished difference Result 46860 states and 128761 transitions. [2022-09-16 11:17:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-09-16 11:17:02,910 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.794871794871795) internal successors, (374), 79 states have internal predecessors, (374), 0 states have call successors, (0), 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 143 [2022-09-16 11:17:02,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:03,031 INFO L225 Difference]: With dead ends: 46860 [2022-09-16 11:17:03,032 INFO L226 Difference]: Without dead ends: 46746 [2022-09-16 11:17:03,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 262 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9029 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=4152, Invalid=25846, Unknown=104, NotChecked=0, Total=30102 [2022-09-16 11:17:03,035 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 2779 mSDsluCounter, 12122 mSDsCounter, 0 mSdLazyCounter, 3945 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2779 SdHoareTripleChecker+Valid, 11569 SdHoareTripleChecker+Invalid, 5900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 3945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1677 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2779 Valid, 11569 Invalid, 5900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 3945 Invalid, 0 Unknown, 1677 Unchecked, 2.7s Time] [2022-09-16 11:17:03,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46746 states. [2022-09-16 11:17:03,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46746 to 35831. [2022-09-16 11:17:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35831 states, 35825 states have (on average 2.8135380321004884) internal successors, (100795), 35830 states have internal predecessors, (100795), 0 states have call successors, (0), 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 11:17:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35831 states to 35831 states and 100795 transitions. [2022-09-16 11:17:03,933 INFO L78 Accepts]: Start accepts. Automaton has 35831 states and 100795 transitions. Word has length 143 [2022-09-16 11:17:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:03,934 INFO L495 AbstractCegarLoop]: Abstraction has 35831 states and 100795 transitions. [2022-09-16 11:17:03,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.794871794871795) internal successors, (374), 79 states have internal predecessors, (374), 0 states have call successors, (0), 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 11:17:03,934 INFO L276 IsEmpty]: Start isEmpty. Operand 35831 states and 100795 transitions. [2022-09-16 11:17:03,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:17:03,950 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:03,950 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:17:03,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2022-09-16 11:17:04,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:04,151 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:17:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:04,151 INFO L85 PathProgramCache]: Analyzing trace with hash -109090149, now seen corresponding path program 8 times [2022-09-16 11:17:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:04,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957548046] [2022-09-16 11:17:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:05,206 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:05,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957548046] [2022-09-16 11:17:05,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957548046] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:05,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210261004] [2022-09-16 11:17:05,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:17:05,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:05,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:05,207 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:05,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-09-16 11:17:05,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:17:05,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:05,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 56 conjunts are in the unsatisfiable core [2022-09-16 11:17:05,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:06,202 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 11:17:06,655 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 11:17:07,024 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 11:17:07,488 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 11:17:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:07,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:09,696 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:17:09,696 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 62 treesize of output 50 [2022-09-16 11:17:09,708 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:17:09,709 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 316 treesize of output 287 [2022-09-16 11:17:09,722 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:17:09,723 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 280 treesize of output 224 [2022-09-16 11:17:09,733 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-09-16 11:17:09,733 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 224 treesize of output 196 [2022-09-16 11:17:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:10,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210261004] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:10,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:10,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 26] total 78 [2022-09-16 11:17:10,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507951468] [2022-09-16 11:17:10,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-09-16 11:17:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-09-16 11:17:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=742, Invalid=5377, Unknown=43, NotChecked=0, Total=6162 [2022-09-16 11:17:10,887 INFO L87 Difference]: Start difference. First operand 35831 states and 100795 transitions. Second operand has 79 states, 78 states have (on average 4.794871794871795) internal successors, (374), 79 states have internal predecessors, (374), 0 states have call successors, (0), 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 11:17:36,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:36,612 INFO L93 Difference]: Finished difference Result 51381 states and 139512 transitions. [2022-09-16 11:17:36,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2022-09-16 11:17:36,613 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 78 states have (on average 4.794871794871795) internal successors, (374), 79 states have internal predecessors, (374), 0 states have call successors, (0), 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 143 [2022-09-16 11:17:36,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:36,743 INFO L225 Difference]: With dead ends: 51381 [2022-09-16 11:17:36,743 INFO L226 Difference]: Without dead ends: 50749 [2022-09-16 11:17:36,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 258 SyntacticMatches, 55 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19735 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=5777, Invalid=40182, Unknown=51, NotChecked=0, Total=46010 [2022-09-16 11:17:36,746 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 5036 mSDsluCounter, 20842 mSDsCounter, 0 mSdLazyCounter, 6004 mSolverCounterSat, 474 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5036 SdHoareTripleChecker+Valid, 20130 SdHoareTripleChecker+Invalid, 8583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 474 IncrementalHoareTripleChecker+Valid, 6004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2105 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:36,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5036 Valid, 20130 Invalid, 8583 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [474 Valid, 6004 Invalid, 0 Unknown, 2105 Unchecked, 4.5s Time] [2022-09-16 11:17:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50749 states. [2022-09-16 11:17:37,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50749 to 26755. [2022-09-16 11:17:37,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26755 states, 26749 states have (on average 2.743579199222401) internal successors, (73388), 26754 states have internal predecessors, (73388), 0 states have call successors, (0), 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 11:17:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26755 states to 26755 states and 73388 transitions. [2022-09-16 11:17:37,471 INFO L78 Accepts]: Start accepts. Automaton has 26755 states and 73388 transitions. Word has length 143 [2022-09-16 11:17:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 26755 states and 73388 transitions. [2022-09-16 11:17:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 78 states have (on average 4.794871794871795) internal successors, (374), 79 states have internal predecessors, (374), 0 states have call successors, (0), 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 11:17:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 26755 states and 73388 transitions. [2022-09-16 11:17:37,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:17:37,485 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:37,485 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:17:37,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-09-16 11:17:37,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-09-16 11:17:37,685 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:17:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash -77816643, now seen corresponding path program 9 times [2022-09-16 11:17:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:37,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935146981] [2022-09-16 11:17:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:37,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:38,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:38,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935146981] [2022-09-16 11:17:38,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935146981] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:38,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581048999] [2022-09-16 11:17:38,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:17:38,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:38,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:38,528 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:38,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-09-16 11:17:38,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:17:38,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:38,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:17:38,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:39,255 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:17:39,255 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 11:17:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:17:39,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:39,395 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:17:39,396 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 11:17:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:17:39,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581048999] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:39,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:39,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 8, 8] total 34 [2022-09-16 11:17:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004875739] [2022-09-16 11:17:39,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:39,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-09-16 11:17:39,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:39,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-09-16 11:17:39,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1091, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:17:39,722 INFO L87 Difference]: Start difference. First operand 26755 states and 73388 transitions. Second operand has 35 states, 34 states have (on average 7.029411764705882) internal successors, (239), 35 states have internal predecessors, (239), 0 states have call successors, (0), 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 11:17:43,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:43,118 INFO L93 Difference]: Finished difference Result 28455 states and 76696 transitions. [2022-09-16 11:17:43,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-09-16 11:17:43,118 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 7.029411764705882) internal successors, (239), 35 states have internal predecessors, (239), 0 states have call successors, (0), 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 143 [2022-09-16 11:17:43,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:43,179 INFO L225 Difference]: With dead ends: 28455 [2022-09-16 11:17:43,180 INFO L226 Difference]: Without dead ends: 28275 [2022-09-16 11:17:43,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 274 SyntacticMatches, 3 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1372 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=607, Invalid=5555, Unknown=0, NotChecked=0, Total=6162 [2022-09-16 11:17:43,180 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1045 mSDsluCounter, 7068 mSDsCounter, 0 mSdLazyCounter, 1908 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 7128 SdHoareTripleChecker+Invalid, 2066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:43,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 7128 Invalid, 2066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1908 Invalid, 0 Unknown, 87 Unchecked, 1.2s Time] [2022-09-16 11:17:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28275 states. [2022-09-16 11:17:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28275 to 25937. [2022-09-16 11:17:43,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25937 states, 25931 states have (on average 2.7353746481045853) internal successors, (70931), 25936 states have internal predecessors, (70931), 0 states have call successors, (0), 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 11:17:43,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25937 states to 25937 states and 70931 transitions. [2022-09-16 11:17:43,658 INFO L78 Accepts]: Start accepts. Automaton has 25937 states and 70931 transitions. Word has length 143 [2022-09-16 11:17:43,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:43,658 INFO L495 AbstractCegarLoop]: Abstraction has 25937 states and 70931 transitions. [2022-09-16 11:17:43,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 7.029411764705882) internal successors, (239), 35 states have internal predecessors, (239), 0 states have call successors, (0), 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 11:17:43,659 INFO L276 IsEmpty]: Start isEmpty. Operand 25937 states and 70931 transitions. [2022-09-16 11:17:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:17:43,673 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:43,673 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:17:43,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-09-16 11:17:43,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:43,874 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:17:43,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:43,874 INFO L85 PathProgramCache]: Analyzing trace with hash -438994943, now seen corresponding path program 10 times [2022-09-16 11:17:43,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:43,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2169752] [2022-09-16 11:17:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:43,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:43,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:44,496 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:44,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:44,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2169752] [2022-09-16 11:17:44,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2169752] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:44,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009649104] [2022-09-16 11:17:44,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:17:44,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:44,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:44,498 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:44,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-09-16 11:17:44,644 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:17:44,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:44,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 35 conjunts are in the unsatisfiable core [2022-09-16 11:17:44,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:45,906 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:17:45,906 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 11:17:45,942 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 7 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:45,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:46,104 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:17:46,104 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 24 treesize of output 15 [2022-09-16 11:17:48,226 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 2 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:48,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009649104] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:48,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:48,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 62 [2022-09-16 11:17:48,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897168301] [2022-09-16 11:17:48,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:48,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-09-16 11:17:48,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:48,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-09-16 11:17:48,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=3477, Unknown=0, NotChecked=0, Total=3906 [2022-09-16 11:17:48,228 INFO L87 Difference]: Start difference. First operand 25937 states and 70931 transitions. Second operand has 63 states, 62 states have (on average 5.790322580645161) internal successors, (359), 63 states have internal predecessors, (359), 0 states have call successors, (0), 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 11:17:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:54,027 INFO L93 Difference]: Finished difference Result 28667 states and 77247 transitions. [2022-09-16 11:17:54,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-09-16 11:17:54,028 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 5.790322580645161) internal successors, (359), 63 states have internal predecessors, (359), 0 states have call successors, (0), 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 143 [2022-09-16 11:17:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:54,088 INFO L225 Difference]: With dead ends: 28667 [2022-09-16 11:17:54,088 INFO L226 Difference]: Without dead ends: 28511 [2022-09-16 11:17:54,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4159 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=2137, Invalid=13613, Unknown=0, NotChecked=0, Total=15750 [2022-09-16 11:17:54,090 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 2486 mSDsluCounter, 8881 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2486 SdHoareTripleChecker+Valid, 8869 SdHoareTripleChecker+Invalid, 2597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:54,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2486 Valid, 8869 Invalid, 2597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2330 Invalid, 0 Unknown, 37 Unchecked, 1.6s Time] [2022-09-16 11:17:54,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28511 states. [2022-09-16 11:17:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28511 to 25895. [2022-09-16 11:17:54,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25895 states, 25889 states have (on average 2.7364517748850865) internal successors, (70844), 25894 states have internal predecessors, (70844), 0 states have call successors, (0), 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 11:17:54,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25895 states to 25895 states and 70844 transitions. [2022-09-16 11:17:54,667 INFO L78 Accepts]: Start accepts. Automaton has 25895 states and 70844 transitions. Word has length 143 [2022-09-16 11:17:54,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:54,667 INFO L495 AbstractCegarLoop]: Abstraction has 25895 states and 70844 transitions. [2022-09-16 11:17:54,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 5.790322580645161) internal successors, (359), 63 states have internal predecessors, (359), 0 states have call successors, (0), 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 11:17:54,667 INFO L276 IsEmpty]: Start isEmpty. Operand 25895 states and 70844 transitions. [2022-09-16 11:17:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:17:54,680 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:54,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:17:54,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-09-16 11:17:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:54,881 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:17:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -395857407, now seen corresponding path program 8 times [2022-09-16 11:17:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:54,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461492667] [2022-09-16 11:17:54,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:54,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:56,218 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:56,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:56,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461492667] [2022-09-16 11:17:56,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461492667] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:56,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251627947] [2022-09-16 11:17:56,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:17:56,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:56,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:56,220 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:56,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-09-16 11:17:56,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:17:56,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:56,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 82 conjunts are in the unsatisfiable core [2022-09-16 11:17:56,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:56,407 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 11:17:56,725 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:17:56,726 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 11:17:56,906 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 15 treesize of output 11 [2022-09-16 11:17:57,079 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 11:17:57,274 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 15 treesize of output 11 [2022-09-16 11:17:57,716 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 11:17:58,313 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 41 treesize of output 39 [2022-09-16 11:17:59,252 INFO L356 Elim1Store]: treesize reduction 38, result has 7.3 percent of original size [2022-09-16 11:17:59,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 21 [2022-09-16 11:17:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:59,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:18:04,778 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:04,778 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 3 case distinctions, treesize of input 265 treesize of output 135 [2022-09-16 11:18:04,869 INFO L356 Elim1Store]: treesize reduction 52, result has 64.6 percent of original size [2022-09-16 11:18:04,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 238 treesize of output 281 [2022-09-16 11:18:04,880 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 74 [2022-09-16 11:18:04,971 INFO L356 Elim1Store]: treesize reduction 52, result has 64.6 percent of original size [2022-09-16 11:18:04,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 120 treesize of output 175 [2022-09-16 11:18:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:18:08,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251627947] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:18:08,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:18:08,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 32] total 91 [2022-09-16 11:18:08,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374639956] [2022-09-16 11:18:08,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:18:08,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 92 states [2022-09-16 11:18:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:18:08,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants. [2022-09-16 11:18:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=889, Invalid=7454, Unknown=29, NotChecked=0, Total=8372 [2022-09-16 11:18:08,132 INFO L87 Difference]: Start difference. First operand 25895 states and 70844 transitions. Second operand has 92 states, 91 states have (on average 4.241758241758242) internal successors, (386), 92 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:18:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:18:19,760 INFO L93 Difference]: Finished difference Result 37314 states and 100821 transitions. [2022-09-16 11:18:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-09-16 11:18:19,760 INFO L78 Accepts]: Start accepts. Automaton has has 92 states, 91 states have (on average 4.241758241758242) internal successors, (386), 92 states have internal predecessors, (386), 0 states have call successors, (0), 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 143 [2022-09-16 11:18:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:18:19,835 INFO L225 Difference]: With dead ends: 37314 [2022-09-16 11:18:19,836 INFO L226 Difference]: Without dead ends: 37314 [2022-09-16 11:18:19,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 242 SyntacticMatches, 10 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6437 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=2902, Invalid=21233, Unknown=45, NotChecked=0, Total=24180 [2022-09-16 11:18:19,837 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 2498 mSDsluCounter, 9097 mSDsCounter, 0 mSdLazyCounter, 1496 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2498 SdHoareTripleChecker+Valid, 9080 SdHoareTripleChecker+Invalid, 3765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2212 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:18:19,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2498 Valid, 9080 Invalid, 3765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1496 Invalid, 0 Unknown, 2212 Unchecked, 1.1s Time] [2022-09-16 11:18:19,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37314 states. [2022-09-16 11:18:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37314 to 27209. [2022-09-16 11:18:20,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27209 states, 27203 states have (on average 2.730912031761203) internal successors, (74289), 27208 states have internal predecessors, (74289), 0 states have call successors, (0), 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 11:18:20,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27209 states to 27209 states and 74289 transitions. [2022-09-16 11:18:20,382 INFO L78 Accepts]: Start accepts. Automaton has 27209 states and 74289 transitions. Word has length 143 [2022-09-16 11:18:20,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:18:20,382 INFO L495 AbstractCegarLoop]: Abstraction has 27209 states and 74289 transitions. [2022-09-16 11:18:20,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 92 states, 91 states have (on average 4.241758241758242) internal successors, (386), 92 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:18:20,382 INFO L276 IsEmpty]: Start isEmpty. Operand 27209 states and 74289 transitions. [2022-09-16 11:18:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:18:20,399 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:18:20,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:18:20,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-09-16 11:18:20,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:18:20,599 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:18:20,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:18:20,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2091792057, now seen corresponding path program 9 times [2022-09-16 11:18:20,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:18:20,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501223033] [2022-09-16 11:18:20,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:18:20,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:18:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:18:21,937 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:18:21,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:18:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501223033] [2022-09-16 11:18:21,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501223033] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:18:21,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544309495] [2022-09-16 11:18:21,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:18:21,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:18:21,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:18:21,939 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:18:21,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-09-16 11:18:22,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:18:22,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:18:22,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 39 conjunts are in the unsatisfiable core [2022-09-16 11:18:22,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:18:22,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:18:22,764 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 31 treesize of output 31 [2022-09-16 11:18:23,429 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:23,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-09-16 11:18:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:18:23,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:18:23,968 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2229 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2229) c_~q~0.base))) (or (not (= (select .cse0 (+ c_~q~0.offset (* 4 c_~q_back~0))) 1)) (< (let ((.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset)) (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset 8)))) 2147483648)))) is different from false [2022-09-16 11:18:24,197 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:24,197 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 127 treesize of output 195 [2022-09-16 11:18:24,219 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:24,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 69 [2022-09-16 11:18:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 8 not checked. [2022-09-16 11:18:25,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544309495] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:18:25,230 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:18:25,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 64 [2022-09-16 11:18:25,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81886951] [2022-09-16 11:18:25,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:18:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-09-16 11:18:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:18:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-09-16 11:18:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3796, Unknown=3, NotChecked=124, Total=4160 [2022-09-16 11:18:25,231 INFO L87 Difference]: Start difference. First operand 27209 states and 74289 transitions. Second operand has 65 states, 64 states have (on average 5.453125) internal successors, (349), 65 states have internal predecessors, (349), 0 states have call successors, (0), 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 11:18:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:18:38,259 INFO L93 Difference]: Finished difference Result 52689 states and 142558 transitions. [2022-09-16 11:18:38,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-09-16 11:18:38,259 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 64 states have (on average 5.453125) internal successors, (349), 65 states have internal predecessors, (349), 0 states have call successors, (0), 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 143 [2022-09-16 11:18:38,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:18:38,380 INFO L225 Difference]: With dead ends: 52689 [2022-09-16 11:18:38,380 INFO L226 Difference]: Without dead ends: 52689 [2022-09-16 11:18:38,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 259 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6596 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=2221, Invalid=24829, Unknown=14, NotChecked=326, Total=27390 [2022-09-16 11:18:38,382 INFO L413 NwaCegarLoop]: 313 mSDtfsCounter, 2777 mSDsluCounter, 12798 mSDsCounter, 0 mSdLazyCounter, 6042 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2777 SdHoareTripleChecker+Valid, 12451 SdHoareTripleChecker+Invalid, 7119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 6042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 838 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:18:38,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2777 Valid, 12451 Invalid, 7119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 6042 Invalid, 0 Unknown, 838 Unchecked, 4.0s Time] [2022-09-16 11:18:38,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52689 states. [2022-09-16 11:18:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52689 to 30595. [2022-09-16 11:18:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30595 states, 30589 states have (on average 2.74242374709863) internal successors, (83888), 30594 states have internal predecessors, (83888), 0 states have call successors, (0), 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 11:18:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30595 states to 30595 states and 83888 transitions. [2022-09-16 11:18:39,114 INFO L78 Accepts]: Start accepts. Automaton has 30595 states and 83888 transitions. Word has length 143 [2022-09-16 11:18:39,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:18:39,114 INFO L495 AbstractCegarLoop]: Abstraction has 30595 states and 83888 transitions. [2022-09-16 11:18:39,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 64 states have (on average 5.453125) internal successors, (349), 65 states have internal predecessors, (349), 0 states have call successors, (0), 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 11:18:39,114 INFO L276 IsEmpty]: Start isEmpty. Operand 30595 states and 83888 transitions. [2022-09-16 11:18:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:18:39,133 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:18:39,133 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:18:39,151 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-09-16 11:18:39,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-09-16 11:18:39,334 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:18:39,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:18:39,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1656494541, now seen corresponding path program 10 times [2022-09-16 11:18:39,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:18:39,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391752004] [2022-09-16 11:18:39,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:18:39,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:18:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:18:40,770 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:18:40,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:18:40,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391752004] [2022-09-16 11:18:40,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391752004] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:18:40,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568875314] [2022-09-16 11:18:40,771 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:18:40,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:18:40,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:18:40,772 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:18:40,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-09-16 11:18:40,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:18:40,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:18:40,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 57 conjunts are in the unsatisfiable core [2022-09-16 11:18:40,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:18:41,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:18:41,755 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 30 treesize of output 30 [2022-09-16 11:18:42,289 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:42,289 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-09-16 11:18:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:18:42,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:18:42,844 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2262 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2262) c_~q~0.base))) (or (< (let ((.cse1 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse1 c_~q~0.offset 4)) (select .cse0 (+ .cse1 c_~q~0.offset)) (select .cse0 (+ .cse1 c_~q~0.offset 8)))) 2147483648) (not (= (select .cse0 (+ c_~q~0.offset (* 4 c_~q_back~0))) 1))))) is different from false [2022-09-16 11:18:43,094 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:43,094 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 127 treesize of output 195 [2022-09-16 11:18:43,117 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:18:43,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 69 [2022-09-16 11:18:44,321 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 8 not checked. [2022-09-16 11:18:44,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568875314] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:18:44,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:18:44,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 22, 18] total 68 [2022-09-16 11:18:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747874283] [2022-09-16 11:18:44,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:18:44,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-09-16 11:18:44,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:18:44,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-09-16 11:18:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=4330, Unknown=3, NotChecked=132, Total=4692 [2022-09-16 11:18:44,323 INFO L87 Difference]: Start difference. First operand 30595 states and 83888 transitions. Second operand has 69 states, 68 states have (on average 5.382352941176471) internal successors, (366), 69 states have internal predecessors, (366), 0 states have call successors, (0), 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 11:19:07,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:19:07,339 INFO L93 Difference]: Finished difference Result 72309 states and 196601 transitions. [2022-09-16 11:19:07,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-09-16 11:19:07,340 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 5.382352941176471) internal successors, (366), 69 states have internal predecessors, (366), 0 states have call successors, (0), 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 143 [2022-09-16 11:19:07,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:19:07,550 INFO L225 Difference]: With dead ends: 72309 [2022-09-16 11:19:07,550 INFO L226 Difference]: Without dead ends: 72309 [2022-09-16 11:19:07,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 257 SyntacticMatches, 26 SemanticMatches, 227 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17338 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=5075, Invalid=46678, Unknown=7, NotChecked=452, Total=52212 [2022-09-16 11:19:07,553 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 4502 mSDsluCounter, 16132 mSDsCounter, 0 mSdLazyCounter, 7810 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4502 SdHoareTripleChecker+Valid, 15852 SdHoareTripleChecker+Invalid, 10104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 7810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1730 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:19:07,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4502 Valid, 15852 Invalid, 10104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 7810 Invalid, 0 Unknown, 1730 Unchecked, 5.7s Time] [2022-09-16 11:19:07,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72309 states. [2022-09-16 11:19:08,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72309 to 36271. [2022-09-16 11:19:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36271 states, 36265 states have (on average 2.771184337515511) internal successors, (100497), 36270 states have internal predecessors, (100497), 0 states have call successors, (0), 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 11:19:08,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36271 states to 36271 states and 100497 transitions. [2022-09-16 11:19:08,741 INFO L78 Accepts]: Start accepts. Automaton has 36271 states and 100497 transitions. Word has length 143 [2022-09-16 11:19:08,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:19:08,741 INFO L495 AbstractCegarLoop]: Abstraction has 36271 states and 100497 transitions. [2022-09-16 11:19:08,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 5.382352941176471) internal successors, (366), 69 states have internal predecessors, (366), 0 states have call successors, (0), 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 11:19:08,741 INFO L276 IsEmpty]: Start isEmpty. Operand 36271 states and 100497 transitions. [2022-09-16 11:19:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:19:08,763 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:19:08,763 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:19:08,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-09-16 11:19:08,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:19:08,964 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:19:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:19:08,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1164363065, now seen corresponding path program 11 times [2022-09-16 11:19:08,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:19:08,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259399758] [2022-09-16 11:19:08,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:19:08,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:19:08,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:19:10,827 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:19:10,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:19:10,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259399758] [2022-09-16 11:19:10,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259399758] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:19:10,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635118319] [2022-09-16 11:19:10,827 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:19:10,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:19:10,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:19:10,829 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:19:10,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-09-16 11:19:10,984 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:19:10,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:19:10,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 75 conjunts are in the unsatisfiable core [2022-09-16 11:19:10,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:19:12,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:12,692 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 31 treesize of output 31 [2022-09-16 11:19:13,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:13,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:13,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:13,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:13,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:13,777 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:13,783 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:19:13,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 62 treesize of output 27 [2022-09-16 11:19:13,842 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:19:13,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:19:15,643 INFO L356 Elim1Store]: treesize reduction 42, result has 65.3 percent of original size [2022-09-16 11:19:15,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 127 treesize of output 153 [2022-09-16 11:19:15,666 INFO L356 Elim1Store]: treesize reduction 29, result has 29.3 percent of original size [2022-09-16 11:19:15,666 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 56 treesize of output 41 [2022-09-16 11:19:18,704 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:19:18,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635118319] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:19:18,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:19:18,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 28, 28] total 86 [2022-09-16 11:19:18,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941292092] [2022-09-16 11:19:18,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:19:18,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-09-16 11:19:18,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:19:18,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-09-16 11:19:18,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=6608, Unknown=2, NotChecked=0, Total=7482 [2022-09-16 11:19:18,707 INFO L87 Difference]: Start difference. First operand 36271 states and 100497 transitions. Second operand has 87 states, 86 states have (on average 4.488372093023256) internal successors, (386), 87 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:19:44,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:19:44,321 INFO L93 Difference]: Finished difference Result 46375 states and 126273 transitions. [2022-09-16 11:19:44,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-09-16 11:19:44,322 INFO L78 Accepts]: Start accepts. Automaton has has 87 states, 86 states have (on average 4.488372093023256) internal successors, (386), 87 states have internal predecessors, (386), 0 states have call successors, (0), 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 143 [2022-09-16 11:19:44,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:19:44,412 INFO L225 Difference]: With dead ends: 46375 [2022-09-16 11:19:44,412 INFO L226 Difference]: Without dead ends: 45523 [2022-09-16 11:19:44,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 243 SyntacticMatches, 4 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11227 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=7266, Invalid=34137, Unknown=9, NotChecked=0, Total=41412 [2022-09-16 11:19:44,415 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 5187 mSDsluCounter, 13183 mSDsCounter, 0 mSdLazyCounter, 5918 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5187 SdHoareTripleChecker+Valid, 13142 SdHoareTripleChecker+Invalid, 7550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 5918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1068 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:19:44,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5187 Valid, 13142 Invalid, 7550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 5918 Invalid, 0 Unknown, 1068 Unchecked, 4.8s Time] [2022-09-16 11:19:44,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45523 states. [2022-09-16 11:19:45,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45523 to 35995. [2022-09-16 11:19:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35995 states, 35989 states have (on average 2.7633443552196506) internal successors, (99450), 35994 states have internal predecessors, (99450), 0 states have call successors, (0), 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 11:19:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35995 states to 35995 states and 99450 transitions. [2022-09-16 11:19:45,173 INFO L78 Accepts]: Start accepts. Automaton has 35995 states and 99450 transitions. Word has length 143 [2022-09-16 11:19:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:19:45,173 INFO L495 AbstractCegarLoop]: Abstraction has 35995 states and 99450 transitions. [2022-09-16 11:19:45,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 86 states have (on average 4.488372093023256) internal successors, (386), 87 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:19:45,173 INFO L276 IsEmpty]: Start isEmpty. Operand 35995 states and 99450 transitions. [2022-09-16 11:19:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:19:45,194 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:19:45,194 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:19:45,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Forceful destruction successful, exit code 0 [2022-09-16 11:19:45,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:19:45,395 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:19:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:19:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash 107985791, now seen corresponding path program 12 times [2022-09-16 11:19:45,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:19:45,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293822216] [2022-09-16 11:19:45,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:19:45,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:19:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:19:46,682 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:19:46,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:19:46,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293822216] [2022-09-16 11:19:46,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293822216] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:19:46,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [714891755] [2022-09-16 11:19:46,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:19:46,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:19:46,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:19:46,684 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:19:46,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-09-16 11:19:46,927 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-09-16 11:19:46,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:19:46,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 76 conjunts are in the unsatisfiable core [2022-09-16 11:19:46,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:19:47,822 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 11:19:48,301 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 11:19:48,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:48,771 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 30 treesize of output 30 [2022-09-16 11:19:49,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:49,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:49,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:49,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:49,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:19:49,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:49,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:49,756 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:19:49,757 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 60 treesize of output 24 [2022-09-16 11:19:49,831 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:19:49,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:19:53,497 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:19:53,497 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 171 treesize of output 111 [2022-09-16 11:19:53,610 INFO L356 Elim1Store]: treesize reduction 52, result has 69.2 percent of original size [2022-09-16 11:19:53,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 276 treesize of output 342 [2022-09-16 11:19:53,622 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:53,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:19:53,649 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:19:53,649 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 166 [2022-09-16 11:19:53,758 INFO L356 Elim1Store]: treesize reduction 52, result has 69.2 percent of original size [2022-09-16 11:19:53,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 225 [2022-09-16 11:20:01,003 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 52 refuted. 3 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:01,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [714891755] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:20:01,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:20:01,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 88 [2022-09-16 11:20:01,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706253269] [2022-09-16 11:20:01,004 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:20:01,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-09-16 11:20:01,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-09-16 11:20:01,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=651, Invalid=7157, Unknown=24, NotChecked=0, Total=7832 [2022-09-16 11:20:01,005 INFO L87 Difference]: Start difference. First operand 35995 states and 99450 transitions. Second operand has 89 states, 88 states have (on average 4.386363636363637) internal successors, (386), 89 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:20:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:13,110 INFO L93 Difference]: Finished difference Result 42398 states and 116240 transitions. [2022-09-16 11:20:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-09-16 11:20:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 88 states have (on average 4.386363636363637) internal successors, (386), 89 states have internal predecessors, (386), 0 states have call successors, (0), 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 143 [2022-09-16 11:20:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:13,204 INFO L225 Difference]: With dead ends: 42398 [2022-09-16 11:20:13,205 INFO L226 Difference]: Without dead ends: 42398 [2022-09-16 11:20:13,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 256 SyntacticMatches, 2 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7148 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=2845, Invalid=20693, Unknown=24, NotChecked=0, Total=23562 [2022-09-16 11:20:13,206 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 3111 mSDsluCounter, 8383 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3111 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1784 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:13,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3111 Valid, 8363 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1437 Invalid, 0 Unknown, 1784 Unchecked, 1.2s Time] [2022-09-16 11:20:13,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42398 states. [2022-09-16 11:20:13,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42398 to 37030. [2022-09-16 11:20:13,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37030 states, 37024 states have (on average 2.7664217804667244) internal successors, (102424), 37029 states have internal predecessors, (102424), 0 states have call successors, (0), 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 11:20:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37030 states to 37030 states and 102424 transitions. [2022-09-16 11:20:13,999 INFO L78 Accepts]: Start accepts. Automaton has 37030 states and 102424 transitions. Word has length 143 [2022-09-16 11:20:14,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:14,000 INFO L495 AbstractCegarLoop]: Abstraction has 37030 states and 102424 transitions. [2022-09-16 11:20:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 88 states have (on average 4.386363636363637) internal successors, (386), 89 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:20:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 37030 states and 102424 transitions. [2022-09-16 11:20:14,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:20:14,026 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:14,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:20:14,046 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-09-16 11:20:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable79 [2022-09-16 11:20:14,227 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:20:14,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1424588537, now seen corresponding path program 13 times [2022-09-16 11:20:14,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:14,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021341056] [2022-09-16 11:20:14,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:14,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:14,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:15,635 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:15,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:15,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021341056] [2022-09-16 11:20:15,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021341056] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:15,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384016283] [2022-09-16 11:20:15,636 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:20:15,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:15,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:15,637 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:20:15,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-09-16 11:20:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:15,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 71 conjunts are in the unsatisfiable core [2022-09-16 11:20:15,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:16,301 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 11:20:16,491 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 11:20:16,691 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 11:20:17,235 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 11:20:17,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:20:17,834 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 29 treesize of output 29 [2022-09-16 11:20:19,050 INFO L356 Elim1Store]: treesize reduction 86, result has 7.5 percent of original size [2022-09-16 11:20:19,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 24 [2022-09-16 11:20:19,102 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:19,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:20:25,320 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:20:25,321 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 3 case distinctions, treesize of input 267 treesize of output 137 [2022-09-16 11:20:25,446 INFO L356 Elim1Store]: treesize reduction 36, result has 77.1 percent of original size [2022-09-16 11:20:25,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 508 treesize of output 544 [2022-09-16 11:20:25,464 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:20:25,466 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:20:25,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:20:25,530 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:20:25,530 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 306 treesize of output 362 [2022-09-16 11:20:25,571 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:20:25,571 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 324 treesize of output 260 [2022-09-16 11:20:40,621 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 52 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:40,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384016283] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:20:40,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:20:40,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 32] total 90 [2022-09-16 11:20:40,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484696582] [2022-09-16 11:20:40,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:20:40,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-09-16 11:20:40,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:20:40,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-09-16 11:20:40,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=547, Invalid=7606, Unknown=37, NotChecked=0, Total=8190 [2022-09-16 11:20:40,623 INFO L87 Difference]: Start difference. First operand 37030 states and 102424 transitions. Second operand has 91 states, 90 states have (on average 4.288888888888889) internal successors, (386), 91 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:20:51,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:20:51,166 INFO L93 Difference]: Finished difference Result 44408 states and 121036 transitions. [2022-09-16 11:20:51,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:20:51,166 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 4.288888888888889) internal successors, (386), 91 states have internal predecessors, (386), 0 states have call successors, (0), 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 143 [2022-09-16 11:20:51,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:20:51,266 INFO L225 Difference]: With dead ends: 44408 [2022-09-16 11:20:51,267 INFO L226 Difference]: Without dead ends: 44408 [2022-09-16 11:20:51,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 246 SyntacticMatches, 7 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5222 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=2217, Invalid=18338, Unknown=37, NotChecked=0, Total=20592 [2022-09-16 11:20:51,268 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 2585 mSDsluCounter, 9296 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2585 SdHoareTripleChecker+Valid, 9281 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1171 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:20:51,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2585 Valid, 9281 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 1824 Invalid, 0 Unknown, 1171 Unchecked, 1.3s Time] [2022-09-16 11:20:51,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44408 states. [2022-09-16 11:20:51,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44408 to 38332. [2022-09-16 11:20:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38332 states, 38326 states have (on average 2.7708083285498097) internal successors, (106194), 38331 states have internal predecessors, (106194), 0 states have call successors, (0), 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 11:20:52,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38332 states to 38332 states and 106194 transitions. [2022-09-16 11:20:52,020 INFO L78 Accepts]: Start accepts. Automaton has 38332 states and 106194 transitions. Word has length 143 [2022-09-16 11:20:52,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:20:52,020 INFO L495 AbstractCegarLoop]: Abstraction has 38332 states and 106194 transitions. [2022-09-16 11:20:52,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 4.288888888888889) internal successors, (386), 91 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:20:52,020 INFO L276 IsEmpty]: Start isEmpty. Operand 38332 states and 106194 transitions. [2022-09-16 11:20:52,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:20:52,045 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:20:52,046 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:20:52,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Forceful destruction successful, exit code 0 [2022-09-16 11:20:52,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:52,266 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:20:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:20:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1445455133, now seen corresponding path program 14 times [2022-09-16 11:20:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:20:52,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603112828] [2022-09-16 11:20:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:20:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:20:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:20:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:53,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:20:53,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603112828] [2022-09-16 11:20:53,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603112828] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:20:53,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1792812434] [2022-09-16 11:20:53,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:20:53,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:20:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:20:53,588 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:20:53,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-09-16 11:20:53,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:20:53,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:20:53,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 73 conjunts are in the unsatisfiable core [2022-09-16 11:20:53,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:20:54,221 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 11:20:54,404 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 11:20:54,592 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 11:20:55,013 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 11:20:55,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:20:55,251 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 19 treesize of output 21 [2022-09-16 11:20:56,186 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:20:56,186 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-09-16 11:20:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:20:56,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:21:06,409 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:06,409 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 3 case distinctions, treesize of input 272 treesize of output 142 [2022-09-16 11:21:06,471 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:06,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 646 treesize of output 670 [2022-09-16 11:21:06,549 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:06,550 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 432 treesize of output 478 [2022-09-16 11:21:06,597 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:06,597 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 458 treesize of output 402 [2022-09-16 11:21:13,257 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 54 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:21:13,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1792812434] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:21:13,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:21:13,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 32] total 90 [2022-09-16 11:21:13,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973595179] [2022-09-16 11:21:13,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:21:13,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2022-09-16 11:21:13,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:21:13,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2022-09-16 11:21:13,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=759, Invalid=7377, Unknown=54, NotChecked=0, Total=8190 [2022-09-16 11:21:13,259 INFO L87 Difference]: Start difference. First operand 38332 states and 106194 transitions. Second operand has 91 states, 90 states have (on average 4.288888888888889) internal successors, (386), 91 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:21:32,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:21:32,008 INFO L93 Difference]: Finished difference Result 47238 states and 129289 transitions. [2022-09-16 11:21:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-09-16 11:21:32,009 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 90 states have (on average 4.288888888888889) internal successors, (386), 91 states have internal predecessors, (386), 0 states have call successors, (0), 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 143 [2022-09-16 11:21:32,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:21:32,109 INFO L225 Difference]: With dead ends: 47238 [2022-09-16 11:21:32,110 INFO L226 Difference]: Without dead ends: 46806 [2022-09-16 11:21:32,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 418 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9407 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=5135, Invalid=31098, Unknown=57, NotChecked=0, Total=36290 [2022-09-16 11:21:32,112 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 4686 mSDsluCounter, 15076 mSDsCounter, 0 mSdLazyCounter, 5288 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4686 SdHoareTripleChecker+Valid, 14658 SdHoareTripleChecker+Invalid, 7842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2121 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:21:32,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4686 Valid, 14658 Invalid, 7842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 5288 Invalid, 0 Unknown, 2121 Unchecked, 3.9s Time] [2022-09-16 11:21:32,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46806 states. [2022-09-16 11:21:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46806 to 38804. [2022-09-16 11:21:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38804 states, 38798 states have (on average 2.7731584102273312) internal successors, (107593), 38803 states have internal predecessors, (107593), 0 states have call successors, (0), 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 11:21:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38804 states to 38804 states and 107593 transitions. [2022-09-16 11:21:32,867 INFO L78 Accepts]: Start accepts. Automaton has 38804 states and 107593 transitions. Word has length 143 [2022-09-16 11:21:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:21:32,868 INFO L495 AbstractCegarLoop]: Abstraction has 38804 states and 107593 transitions. [2022-09-16 11:21:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 90 states have (on average 4.288888888888889) internal successors, (386), 91 states have internal predecessors, (386), 0 states have call successors, (0), 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 11:21:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 38804 states and 107593 transitions. [2022-09-16 11:21:32,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:21:32,891 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:21:32,891 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-09-16 11:21:32,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Forceful destruction successful, exit code 0 [2022-09-16 11:21:33,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:21:33,091 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-09-16 11:21:33,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:21:33,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1937586609, now seen corresponding path program 15 times [2022-09-16 11:21:33,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:21:33,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666647366] [2022-09-16 11:21:33,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:21:33,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:21:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:21:34,530 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:21:34,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:21:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666647366] [2022-09-16 11:21:34,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666647366] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:21:34,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593612717] [2022-09-16 11:21:34,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:21:34,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:21:34,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:21:34,532 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:21:34,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-09-16 11:21:34,714 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:21:34,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:21:34,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 43 conjunts are in the unsatisfiable core [2022-09-16 11:21:34,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:21:35,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:21:35,410 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 19 treesize of output 21 [2022-09-16 11:21:35,996 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:35,997 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-09-16 11:21:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:21:36,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:21:36,690 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2444 (Array Int Int))) (let ((.cse1 (* 4 c_~q_back~0)) (.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_2444) c_~q~0.base))) (or (not (= (select .cse0 (+ c_~q~0.offset .cse1)) 1)) (not (= (select .cse0 (+ c_~q~0.offset .cse1 4)) 1)) (< (let ((.cse2 (* c_~q_front~0 4))) (+ (select .cse0 (+ .cse2 c_~q~0.offset 4)) (select .cse0 (+ .cse2 c_~q~0.offset 8)) (select .cse0 (+ .cse2 c_~q~0.offset)))) 2147483648)))) is different from false [2022-09-16 11:21:36,806 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:36,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 148 treesize of output 216 [2022-09-16 11:21:36,844 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:21:36,845 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 81 treesize of output 127 [2022-09-16 11:21:38,050 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 8 not checked. [2022-09-16 11:21:38,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593612717] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:21:38,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:21:38,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 18, 18] total 64 [2022-09-16 11:21:38,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53285308] [2022-09-16 11:21:38,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:21:38,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-09-16 11:21:38,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:21:38,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-09-16 11:21:38,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3816, Unknown=1, NotChecked=124, Total=4160 [2022-09-16 11:21:38,052 INFO L87 Difference]: Start difference. First operand 38804 states and 107593 transitions. Second operand has 65 states, 64 states have (on average 5.453125) internal successors, (349), 65 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-09-16 11:21:43,732 WARN L249 SmtUtils]: Removed 9 from assertion stack [2022-09-16 11:21:43,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-16 11:21:43,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 252 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2482 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1174, Invalid=10819, Unknown=1, NotChecked=216, Total=12210 [2022-09-16 11:21:43,734 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 1966 mSDsluCounter, 3805 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 3811 SdHoareTripleChecker+Invalid, 1884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 198 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:21:43,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 3811 Invalid, 1884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1538 Invalid, 0 Unknown, 198 Unchecked, 1.1s Time] [2022-09-16 11:21:43,735 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 24 remaining) [2022-09-16 11:21:43,739 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-16 11:21:43,743 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-16 11:21:43,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-09-16 11:21:43,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:21:43,936 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. [2022-09-16 11:21:43,938 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 24 remaining) [2022-09-16 11:21:43,938 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 24 remaining) [2022-09-16 11:21:43,938 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 24 remaining) [2022-09-16 11:21:43,938 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 24 remaining) [2022-09-16 11:21:43,939 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 24 remaining) [2022-09-16 11:21:43,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 24 remaining) [2022-09-16 11:21:43,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 24 remaining) [2022-09-16 11:21:43,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 24 remaining) [2022-09-16 11:21:43,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 24 remaining) [2022-09-16 11:21:43,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 24 remaining) [2022-09-16 11:21:43,940 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 24 remaining) [2022-09-16 11:21:43,942 INFO L444 BasicCegarLoop]: Path program histogram: [15, 10, 6, 6, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:21:43,946 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:21:43,946 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:21:43,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:21:43 BasicIcfg [2022-09-16 11:21:43,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:21:43,948 INFO L158 Benchmark]: Toolchain (without parser) took 736956.22ms. Allocated memory was 179.3MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 123.8MB in the beginning and 1.1GB in the end (delta: -929.3MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-09-16 11:21:43,948 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 179.3MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:21:43,948 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.43ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 123.7MB in the beginning and 190.8MB in the end (delta: -67.2MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. [2022-09-16 11:21:43,948 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.53ms. Allocated memory is still 216.0MB. Free memory was 190.8MB in the beginning and 188.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:21:43,948 INFO L158 Benchmark]: Boogie Preprocessor took 25.05ms. Allocated memory is still 216.0MB. Free memory was 188.7MB in the beginning and 187.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:21:43,948 INFO L158 Benchmark]: RCFGBuilder took 573.51ms. Allocated memory is still 216.0MB. Free memory was 187.2MB in the beginning and 159.4MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. [2022-09-16 11:21:43,948 INFO L158 Benchmark]: TraceAbstraction took 736029.06ms. Allocated memory was 216.0MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 158.9MB in the beginning and 1.1GB in the end (delta: -894.2MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. [2022-09-16 11:21:43,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 179.3MB. Free memory is still 140.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 283.43ms. Allocated memory was 179.3MB in the beginning and 216.0MB in the end (delta: 36.7MB). Free memory was 123.7MB in the beginning and 190.8MB in the end (delta: -67.2MB). Peak memory consumption was 7.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.53ms. Allocated memory is still 216.0MB. Free memory was 190.8MB in the beginning and 188.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.05ms. Allocated memory is still 216.0MB. Free memory was 188.7MB in the beginning and 187.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 573.51ms. Allocated memory is still 216.0MB. Free memory was 187.2MB in the beginning and 159.4MB in the end (delta: 27.8MB). Peak memory consumption was 27.3MB. Max. memory is 8.0GB. * TraceAbstraction took 736029.06ms. Allocated memory was 216.0MB in the beginning and 2.9GB in the end (delta: 2.7GB). Free memory was 158.9MB in the beginning and 1.1GB in the end (delta: -894.2MB). Peak memory consumption was 1.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 53]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 49]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while NwaCegarLoop was constructing difference of abstraction (38804states) and FLOYD_HOARE automaton (currently 48 states, 65 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 77 for 37ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 190 locations, 24 error locations. Started 1 CEGAR loops. OverallTime: 735.9s, OverallIterations: 83, TraceHistogramMax: 5, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.6s, AutomataDifference: 382.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 112859 SdHoareTripleChecker+Valid, 83.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112859 mSDsluCounter, 412930 SdHoareTripleChecker+Invalid, 72.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 48256 IncrementalHoareTripleChecker+Unchecked, 416039 mSDsCounter, 8130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137102 IncrementalHoareTripleChecker+Invalid, 193488 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8130 mSolverCounterUnsat, 16225 mSDtfsCounter, 137102 mSolverCounterSat, 1.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21726 GetRequests, 14400 SyntacticMatches, 303 SemanticMatches, 7022 ConstructedPredicates, 29 IntricatePredicates, 2 DeprecatedPredicates, 240943 ImplicationChecksByTransitivity, 427.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40449occurred in iteration=66, InterpolantAutomatonStates: 3612, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 23.6s AutomataMinimizationTime, 82 MinimizatonAttempts, 567446 StatesRemovedByMinimization, 76 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 301.1s InterpolantComputationTime, 18586 NumberOfCodeBlocks, 18192 NumberOfCodeBlocksAsserted, 216 NumberOfCheckSat, 25681 ConstructedInterpolants, 2205 QuantifiedInterpolants, 511388 SizeOfPredicates, 1513 NumberOfNonLiveVariables, 20447 ConjunctsInSsa, 2710 ConjunctsInUnsatCore, 221 InterpolantComputations, 27 PerfectInterpolantSequences, 1561/5844 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown