/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-min-max-dec.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:01:55,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:01:55,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:01:55,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:01:55,992 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:01:55,995 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:01:55,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:01:56,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:01:56,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:01:56,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:01:56,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:01:56,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:01:56,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:01:56,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:01:56,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:01:56,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:01:56,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:01:56,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:01:56,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:01:56,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:01:56,020 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:01:56,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:01:56,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:01:56,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:01:56,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:01:56,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:01:56,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:01:56,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:01:56,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:01:56,031 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:01:56,031 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:01:56,032 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:01:56,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:01:56,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:01:56,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:01:56,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:01:56,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:01:56,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:01:56,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:01:56,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:01:56,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:01:56,043 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 11:01:56,078 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:01:56,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:01:56,079 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:01:56,079 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:01:56,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:01:56,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:01:56,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:01:56,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:01:56,081 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:01:56,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:01:56,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:01:56,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:01:56,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:01:56,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:01:56,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:01:56,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:01:56,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:01:56,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:01:56,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:01:56,084 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:01:56,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:01:56,085 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:01:56,302 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:01:56,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:01:56,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:01:56,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:01:56,332 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:01:56,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2022-09-16 11:01:56,395 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba0a63424/21e410653c6f481e844e83e83be0aeba/FLAG1d2d9cb41 [2022-09-16 11:01:56,765 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:01:56,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-min-max-dec.wvr.c [2022-09-16 11:01:56,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba0a63424/21e410653c6f481e844e83e83be0aeba/FLAG1d2d9cb41 [2022-09-16 11:01:56,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba0a63424/21e410653c6f481e844e83e83be0aeba [2022-09-16 11:01:56,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:01:56,787 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:01:56,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:01:56,789 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:01:56,791 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:01:56,792 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:01:56" (1/1) ... [2022-09-16 11:01:56,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f3fbc40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:56, skipping insertion in model container [2022-09-16 11:01:56,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:01:56" (1/1) ... [2022-09-16 11:01:56,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:01:56,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:01:56,983 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-min-max-dec.wvr.c[3019,3032] [2022-09-16 11:01:56,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:01:56,993 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:01:57,015 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-min-max-dec.wvr.c[3019,3032] [2022-09-16 11:01:57,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:01:57,029 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:01:57,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57 WrapperNode [2022-09-16 11:01:57,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:01:57,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:01:57,031 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:01:57,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:01:57,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,059 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,077 INFO L138 Inliner]: procedures = 26, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 143 [2022-09-16 11:01:57,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:01:57,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:01:57,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:01:57,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:01:57,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,088 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,094 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:01:57,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:01:57,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:01:57,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:01:57,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (1/1) ... [2022-09-16 11:01:57,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:01:57,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:01:57,134 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 11:01:57,140 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 11:01:57,161 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:01:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:01:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:01:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:01:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:01:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:01:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:01:57,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:01:57,162 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:01:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:01:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:01:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:01:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:01:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:01:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:01:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:01:57,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:01:57,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:01:57,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:01:57,165 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 11:01:57,272 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:01:57,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:01:57,583 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:01:57,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:01:57,654 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:01:57,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:01:57 BoogieIcfgContainer [2022-09-16 11:01:57,656 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:01:57,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:01:57,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:01:57,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:01:57,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:01:56" (1/3) ... [2022-09-16 11:01:57,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d7005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:01:57, skipping insertion in model container [2022-09-16 11:01:57,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:01:57" (2/3) ... [2022-09-16 11:01:57,662 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573d7005 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:01:57, skipping insertion in model container [2022-09-16 11:01:57,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:01:57" (3/3) ... [2022-09-16 11:01:57,663 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2022-09-16 11:01:57,669 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:01:57,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:01:57,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-09-16 11:01:57,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:01:57,779 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:01:57,812 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 192 places, 191 transitions, 414 flow [2022-09-16 11:02:01,407 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 106663 states, 106527 states have (on average 4.614125996226309) internal successors, (491529), 106662 states have internal predecessors, (491529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:01,425 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:02:01,431 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;@110306d8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:02:01,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2022-09-16 11:02:01,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 106663 states, 106527 states have (on average 4.614125996226309) internal successors, (491529), 106662 states have internal predecessors, (491529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:01,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-09-16 11:02:01,632 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:02:01,633 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] [2022-09-16 11:02:01,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:02:01,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:02:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2043980005, now seen corresponding path program 1 times [2022-09-16 11:02:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:02:01,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340263115] [2022-09-16 11:02:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:01,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:02:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:01,934 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 11:02:01,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:02:01,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340263115] [2022-09-16 11:02:01,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340263115] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:02:01,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:02:01,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:02:01,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562874641] [2022-09-16 11:02:01,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:02:01,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:02:01,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:02:01,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:02:01,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:02:02,277 INFO L87 Difference]: Start difference. First operand has 106663 states, 106527 states have (on average 4.614125996226309) internal successors, (491529), 106662 states have internal predecessors, (491529), 0 states have call successors, (0), 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 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:05,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:02:05,629 INFO L93 Difference]: Finished difference Result 172642 states and 754302 transitions. [2022-09-16 11:02:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:02:05,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-09-16 11:02:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:02:07,700 INFO L225 Difference]: With dead ends: 172642 [2022-09-16 11:02:07,701 INFO L226 Difference]: Without dead ends: 172639 [2022-09-16 11:02:07,703 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 11:02:07,706 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 93 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:02:07,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 395 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:02:08,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172639 states. [2022-09-16 11:02:12,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172639 to 86354. [2022-09-16 11:02:13,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86354 states, 86281 states have (on average 4.3715881827980665) internal successors, (377185), 86353 states have internal predecessors, (377185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:14,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86354 states to 86354 states and 377185 transitions. [2022-09-16 11:02:14,341 INFO L78 Accepts]: Start accepts. Automaton has 86354 states and 377185 transitions. Word has length 59 [2022-09-16 11:02:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:02:14,341 INFO L495 AbstractCegarLoop]: Abstraction has 86354 states and 377185 transitions. [2022-09-16 11:02:14,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 19.666666666666668) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 86354 states and 377185 transitions. [2022-09-16 11:02:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-09-16 11:02:14,344 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:02:14,344 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] [2022-09-16 11:02:14,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:02:14,345 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:02:14,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:02:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1683143026, now seen corresponding path program 1 times [2022-09-16 11:02:14,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:02:14,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209296863] [2022-09-16 11:02:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:14,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:02:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:14,474 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 11:02:14,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:02:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209296863] [2022-09-16 11:02:14,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209296863] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:02:14,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139422683] [2022-09-16 11:02:14,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:14,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:02:14,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:02:14,478 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 11:02:14,479 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 11:02:14,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:14,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:02:14,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:02:14,680 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 11:02:14,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:02:14,740 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 11:02:14,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139422683] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:02:14,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:02:14,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:02:14,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828644972] [2022-09-16 11:02:14,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:02:14,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:02:14,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:02:14,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:02:14,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:02:14,746 INFO L87 Difference]: Start difference. First operand 86354 states and 377185 transitions. Second operand has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:21,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:02:21,754 INFO L93 Difference]: Finished difference Result 431517 states and 1885667 transitions. [2022-09-16 11:02:21,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:02:21,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 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 68 [2022-09-16 11:02:21,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:02:27,228 INFO L225 Difference]: With dead ends: 431517 [2022-09-16 11:02:27,228 INFO L226 Difference]: Without dead ends: 431517 [2022-09-16 11:02:27,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:02:27,230 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 567 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:02:27,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 838 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:02:28,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431517 states. [2022-09-16 11:02:37,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431517 to 86380. [2022-09-16 11:02:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86380 states, 86307 states have (on average 4.370630423951707) internal successors, (377216), 86379 states have internal predecessors, (377216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:39,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86380 states to 86380 states and 377216 transitions. [2022-09-16 11:02:39,262 INFO L78 Accepts]: Start accepts. Automaton has 86380 states and 377216 transitions. Word has length 68 [2022-09-16 11:02:39,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:02:39,262 INFO L495 AbstractCegarLoop]: Abstraction has 86380 states and 377216 transitions. [2022-09-16 11:02:39,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.454545454545455) internal successors, (93), 12 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:39,263 INFO L276 IsEmpty]: Start isEmpty. Operand 86380 states and 377216 transitions. [2022-09-16 11:02:39,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-09-16 11:02:39,264 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:02:39,265 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] [2022-09-16 11:02:39,301 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 11:02:39,488 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 11:02:39,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:02:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:02:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash -637825705, now seen corresponding path program 1 times [2022-09-16 11:02:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:02:39,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108436438] [2022-09-16 11:02:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:02:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:39,561 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 11:02:39,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:02:39,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108436438] [2022-09-16 11:02:39,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108436438] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:02:39,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170825728] [2022-09-16 11:02:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:39,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:02:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:02:39,564 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 11:02:39,566 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 11:02:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:02:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:02:39,677 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 11:02:39,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:02:39,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170825728] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:02:39,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:02:39,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:02:39,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490702126] [2022-09-16 11:02:39,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:02:39,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:02:39,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:02:39,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:02:39,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:02:39,680 INFO L87 Difference]: Start difference. First operand 86380 states and 377216 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:42,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:02:42,427 INFO L93 Difference]: Finished difference Result 172662 states and 754325 transitions. [2022-09-16 11:02:42,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:02:42,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-09-16 11:02:42,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:02:44,349 INFO L225 Difference]: With dead ends: 172662 [2022-09-16 11:02:44,349 INFO L226 Difference]: Without dead ends: 172662 [2022-09-16 11:02:44,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 67 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 11:02:44,351 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 187 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:02:44,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 579 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:02:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172662 states. [2022-09-16 11:02:48,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172662 to 86379. [2022-09-16 11:02:49,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86379 states, 86307 states have (on average 4.370595664314598) internal successors, (377213), 86378 states have internal predecessors, (377213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:50,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86379 states to 86379 states and 377213 transitions. [2022-09-16 11:02:50,006 INFO L78 Accepts]: Start accepts. Automaton has 86379 states and 377213 transitions. Word has length 69 [2022-09-16 11:02:50,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:02:50,006 INFO L495 AbstractCegarLoop]: Abstraction has 86379 states and 377213 transitions. [2022-09-16 11:02:50,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:50,006 INFO L276 IsEmpty]: Start isEmpty. Operand 86379 states and 377213 transitions. [2022-09-16 11:02:50,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-09-16 11:02:50,014 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:02:50,014 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] [2022-09-16 11:02:50,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-16 11:02:50,239 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 11:02:50,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:02:50,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:02:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash 273093613, now seen corresponding path program 1 times [2022-09-16 11:02:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:02:50,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596179587] [2022-09-16 11:02:50,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:02:50,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:02:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:02:50,388 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 11:02:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:02:50,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596179587] [2022-09-16 11:02:50,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596179587] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:02:50,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:02:50,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:02:50,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122175789] [2022-09-16 11:02:50,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:02:50,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:02:50,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:02:50,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:02:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:02:50,390 INFO L87 Difference]: Start difference. First operand 86379 states and 377213 transitions. Second operand has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:02:53,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:02:53,086 INFO L93 Difference]: Finished difference Result 144873 states and 632156 transitions. [2022-09-16 11:02:53,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:02:53,087 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-09-16 11:02:53,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:02:55,440 INFO L225 Difference]: With dead ends: 144873 [2022-09-16 11:02:55,441 INFO L226 Difference]: Without dead ends: 144873 [2022-09-16 11:02:55,441 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 11:02:55,443 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 179 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:02:55,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 568 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:02:55,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144873 states. [2022-09-16 11:02:59,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144873 to 114159. [2022-09-16 11:03:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114159 states, 114087 states have (on average 4.4248775057631455) internal successors, (504821), 114158 states have internal predecessors, (504821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114159 states to 114159 states and 504821 transitions. [2022-09-16 11:03:01,316 INFO L78 Accepts]: Start accepts. Automaton has 114159 states and 504821 transitions. Word has length 70 [2022-09-16 11:03:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:03:01,317 INFO L495 AbstractCegarLoop]: Abstraction has 114159 states and 504821 transitions. [2022-09-16 11:03:01,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 23.333333333333332) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:01,317 INFO L276 IsEmpty]: Start isEmpty. Operand 114159 states and 504821 transitions. [2022-09-16 11:03:01,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-09-16 11:03:01,319 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:03:01,319 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] [2022-09-16 11:03:01,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:03:01,319 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:03:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:03:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1184244338, now seen corresponding path program 1 times [2022-09-16 11:03:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:03:01,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618309853] [2022-09-16 11:03:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:03:01,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:03:01,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:03:01,401 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 11:03:01,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:03:01,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618309853] [2022-09-16 11:03:01,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618309853] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:03:01,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:03:01,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:03:01,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511020002] [2022-09-16 11:03:01,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:03:01,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:03:01,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:03:01,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:03:01,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:03:01,403 INFO L87 Difference]: Start difference. First operand 114159 states and 504821 transitions. Second operand has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:03:04,315 INFO L93 Difference]: Finished difference Result 190043 states and 840646 transitions. [2022-09-16 11:03:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:03:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-09-16 11:03:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:03:06,256 INFO L225 Difference]: With dead ends: 190043 [2022-09-16 11:03:06,256 INFO L226 Difference]: Without dead ends: 190043 [2022-09-16 11:03:06,256 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 11:03:06,257 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 167 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:03:06,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 556 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:03:06,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190043 states. [2022-09-16 11:03:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190043 to 152209. [2022-09-16 11:03:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152209 states, 152137 states have (on average 4.475807988852153) internal successors, (680936), 152208 states have internal predecessors, (680936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152209 states to 152209 states and 680936 transitions. [2022-09-16 11:03:15,661 INFO L78 Accepts]: Start accepts. Automaton has 152209 states and 680936 transitions. Word has length 76 [2022-09-16 11:03:15,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:03:15,662 INFO L495 AbstractCegarLoop]: Abstraction has 152209 states and 680936 transitions. [2022-09-16 11:03:15,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:15,663 INFO L276 IsEmpty]: Start isEmpty. Operand 152209 states and 680936 transitions. [2022-09-16 11:03:15,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-09-16 11:03:15,665 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:03:15,666 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:03:15,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:03:15,670 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:03:15,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:03:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash 790122497, now seen corresponding path program 1 times [2022-09-16 11:03:15,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:03:15,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366474537] [2022-09-16 11:03:15,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:03:15,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:03:15,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:03:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:03:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:03:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366474537] [2022-09-16 11:03:15,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366474537] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:03:15,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582100687] [2022-09-16 11:03:15,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:03:15,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:03:15,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:03:15,852 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 11:03:15,923 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 11:03:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:03:16,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:03:16,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:03:16,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:03:16,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:03:16,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582100687] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:03:16,209 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:03:16,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:03:16,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406106131] [2022-09-16 11:03:16,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:03:16,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:03:16,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:03:16,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:03:16,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:03:16,210 INFO L87 Difference]: Start difference. First operand 152209 states and 680936 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 11:03:20,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:03:20,831 INFO L93 Difference]: Finished difference Result 208044 states and 918821 transitions. [2022-09-16 11:03:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:03:20,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 77 [2022-09-16 11:03:20,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:03:23,108 INFO L225 Difference]: With dead ends: 208044 [2022-09-16 11:03:23,108 INFO L226 Difference]: Without dead ends: 207612 [2022-09-16 11:03:23,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:03:23,109 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 619 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:03:23,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 476 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:03:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207612 states. [2022-09-16 11:03:29,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207612 to 181410. [2022-09-16 11:03:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181410 states, 181338 states have (on average 4.469647839945296) internal successors, (810517), 181409 states have internal predecessors, (810517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:32,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181410 states to 181410 states and 810517 transitions. [2022-09-16 11:03:32,775 INFO L78 Accepts]: Start accepts. Automaton has 181410 states and 810517 transitions. Word has length 77 [2022-09-16 11:03:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:03:32,775 INFO L495 AbstractCegarLoop]: Abstraction has 181410 states and 810517 transitions. [2022-09-16 11:03:32,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 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 11:03:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 181410 states and 810517 transitions. [2022-09-16 11:03:32,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-09-16 11:03:32,778 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:03:32,778 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] [2022-09-16 11:03:32,802 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:03:33,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:03:33,002 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:03:33,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:03:33,002 INFO L85 PathProgramCache]: Analyzing trace with hash 941608342, now seen corresponding path program 1 times [2022-09-16 11:03:33,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:03:33,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316917518] [2022-09-16 11:03:33,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:03:33,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:03:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:03:33,128 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 11:03:33,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:03:33,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316917518] [2022-09-16 11:03:33,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316917518] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:03:33,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:03:33,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:03:33,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035392780] [2022-09-16 11:03:33,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:03:33,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:03:33,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:03:33,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:03:33,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:03:33,130 INFO L87 Difference]: Start difference. First operand 181410 states and 810517 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:36,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:03:36,549 INFO L93 Difference]: Finished difference Result 172017 states and 760147 transitions. [2022-09-16 11:03:36,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:03:36,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2022-09-16 11:03:36,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:03:39,236 INFO L225 Difference]: With dead ends: 172017 [2022-09-16 11:03:39,237 INFO L226 Difference]: Without dead ends: 171441 [2022-09-16 11:03:39,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:03:39,238 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 543 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:03:39,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 517 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:03:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171441 states. [2022-09-16 11:03:46,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171441 to 166242. [2022-09-16 11:03:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166242 states, 166170 states have (on average 4.443551784317266) internal successors, (738385), 166241 states have internal predecessors, (738385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:49,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166242 states to 166242 states and 738385 transitions. [2022-09-16 11:03:49,083 INFO L78 Accepts]: Start accepts. Automaton has 166242 states and 738385 transitions. Word has length 78 [2022-09-16 11:03:49,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:03:49,083 INFO L495 AbstractCegarLoop]: Abstraction has 166242 states and 738385 transitions. [2022-09-16 11:03:49,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:49,084 INFO L276 IsEmpty]: Start isEmpty. Operand 166242 states and 738385 transitions. [2022-09-16 11:03:49,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-09-16 11:03:49,088 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:03:49,089 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] [2022-09-16 11:03:49,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:03:49,089 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:03:49,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:03:49,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1515649965, now seen corresponding path program 1 times [2022-09-16 11:03:49,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:03:49,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393464907] [2022-09-16 11:03:49,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:03:49,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:03:49,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:03:49,188 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 11:03:49,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:03:49,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393464907] [2022-09-16 11:03:49,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393464907] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:03:49,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:03:49,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:03:49,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096251432] [2022-09-16 11:03:49,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:03:49,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:03:49,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:03:49,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:03:49,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:03:49,190 INFO L87 Difference]: Start difference. First operand 166242 states and 738385 transitions. Second operand has 3 states, 2 states have (on average 41.0) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:03:52,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:03:52,381 INFO L93 Difference]: Finished difference Result 164970 states and 732347 transitions. [2022-09-16 11:03:52,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:03:52,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 41.0) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-09-16 11:03:52,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:03:55,038 INFO L225 Difference]: With dead ends: 164970 [2022-09-16 11:03:55,039 INFO L226 Difference]: Without dead ends: 164970 [2022-09-16 11:03:55,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:03:55,040 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 48 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:03:55,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 205 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:03:55,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164970 states. [2022-09-16 11:04:01,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164970 to 164970. [2022-09-16 11:04:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164970 states, 164898 states have (on average 4.441212143264321) internal successors, (732347), 164969 states have internal predecessors, (732347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164970 states to 164970 states and 732347 transitions. [2022-09-16 11:04:04,720 INFO L78 Accepts]: Start accepts. Automaton has 164970 states and 732347 transitions. Word has length 82 [2022-09-16 11:04:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:04:04,720 INFO L495 AbstractCegarLoop]: Abstraction has 164970 states and 732347 transitions. [2022-09-16 11:04:04,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 41.0) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 164970 states and 732347 transitions. [2022-09-16 11:04:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-09-16 11:04:04,729 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:04:04,729 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] [2022-09-16 11:04:04,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:04:04,729 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:04:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:04:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash 832217023, now seen corresponding path program 1 times [2022-09-16 11:04:04,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:04:04,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062278396] [2022-09-16 11:04:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:04:04,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:04:04,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:04:04,808 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 11:04:04,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:04:04,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062278396] [2022-09-16 11:04:04,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062278396] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:04:04,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:04:04,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:04:04,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606106130] [2022-09-16 11:04:04,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:04:04,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:04:04,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:04:04,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:04:04,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:04:04,810 INFO L87 Difference]: Start difference. First operand 164970 states and 732347 transitions. Second operand has 3 states, 2 states have (on average 41.5) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:04:07,936 INFO L93 Difference]: Finished difference Result 162082 states and 718629 transitions. [2022-09-16 11:04:07,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:04:07,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 41.5) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-09-16 11:04:07,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:04:10,622 INFO L225 Difference]: With dead ends: 162082 [2022-09-16 11:04:10,622 INFO L226 Difference]: Without dead ends: 162082 [2022-09-16 11:04:10,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:04:10,623 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 45 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:04:10,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:04:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162082 states. [2022-09-16 11:04:16,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162082 to 162082. [2022-09-16 11:04:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162082 states, 162010 states have (on average 4.435707672365903) internal successors, (718629), 162081 states have internal predecessors, (718629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:19,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162082 states to 162082 states and 718629 transitions. [2022-09-16 11:04:19,794 INFO L78 Accepts]: Start accepts. Automaton has 162082 states and 718629 transitions. Word has length 83 [2022-09-16 11:04:19,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:04:19,794 INFO L495 AbstractCegarLoop]: Abstraction has 162082 states and 718629 transitions. [2022-09-16 11:04:19,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 41.5) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:19,794 INFO L276 IsEmpty]: Start isEmpty. Operand 162082 states and 718629 transitions. [2022-09-16 11:04:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-09-16 11:04:19,825 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:04:19,825 INFO L195 NwaCegarLoop]: trace histogram [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 11:04:19,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:04:19,825 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:04:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:04:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash -990639124, now seen corresponding path program 1 times [2022-09-16 11:04:19,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:04:19,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742739782] [2022-09-16 11:04:19,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:04:19,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:04:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:04:19,927 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:04:19,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:04:19,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742739782] [2022-09-16 11:04:19,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742739782] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:04:19,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638122673] [2022-09-16 11:04:19,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:04:19,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:04:19,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:04:19,940 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 11:04:20,007 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 11:04:20,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:04:20,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:04:20,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:04:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:04:20,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:04:20,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638122673] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:04:20,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:04:20,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:04:20,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433310569] [2022-09-16 11:04:20,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:04:20,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:04:20,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:04:20,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:04:20,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:04:20,237 INFO L87 Difference]: Start difference. First operand 162082 states and 718629 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:04:23,518 INFO L93 Difference]: Finished difference Result 154405 states and 685239 transitions. [2022-09-16 11:04:23,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:04:23,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 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 83 [2022-09-16 11:04:23,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:04:25,967 INFO L225 Difference]: With dead ends: 154405 [2022-09-16 11:04:25,969 INFO L226 Difference]: Without dead ends: 152545 [2022-09-16 11:04:25,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:04:25,970 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 445 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:04:25,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 478 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:04:26,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152545 states. [2022-09-16 11:04:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152545 to 152089. [2022-09-16 11:04:32,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152089 states, 152017 states have (on average 4.448364327673879) internal successors, (676227), 152088 states have internal predecessors, (676227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152089 states to 152089 states and 676227 transitions. [2022-09-16 11:04:34,028 INFO L78 Accepts]: Start accepts. Automaton has 152089 states and 676227 transitions. Word has length 83 [2022-09-16 11:04:34,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:04:34,028 INFO L495 AbstractCegarLoop]: Abstraction has 152089 states and 676227 transitions. [2022-09-16 11:04:34,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 152089 states and 676227 transitions. [2022-09-16 11:04:34,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-09-16 11:04:34,061 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:04:34,061 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] [2022-09-16 11:04:34,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:04:34,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:04:34,274 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:04:34,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:04:34,275 INFO L85 PathProgramCache]: Analyzing trace with hash 689567012, now seen corresponding path program 1 times [2022-09-16 11:04:34,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:04:34,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196177617] [2022-09-16 11:04:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:04:34,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:04:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:04:34,364 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 11:04:34,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:04:34,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196177617] [2022-09-16 11:04:34,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196177617] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:04:34,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:04:34,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:04:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141242891] [2022-09-16 11:04:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:04:34,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:04:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:04:34,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:04:34,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:04:34,367 INFO L87 Difference]: Start difference. First operand 152089 states and 676227 transitions. Second operand has 3 states, 2 states have (on average 42.5) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:37,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:04:37,287 INFO L93 Difference]: Finished difference Result 150924 states and 670723 transitions. [2022-09-16 11:04:37,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:04:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 42.5) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-09-16 11:04:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:04:39,538 INFO L225 Difference]: With dead ends: 150924 [2022-09-16 11:04:39,539 INFO L226 Difference]: Without dead ends: 150924 [2022-09-16 11:04:39,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:04:39,546 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 46 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:04:39,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 208 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:04:39,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150924 states. [2022-09-16 11:04:45,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150924 to 150924. [2022-09-16 11:04:45,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150924 states, 150852 states have (on average 4.446232068517487) internal successors, (670723), 150923 states have internal predecessors, (670723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150924 states to 150924 states and 670723 transitions. [2022-09-16 11:04:47,945 INFO L78 Accepts]: Start accepts. Automaton has 150924 states and 670723 transitions. Word has length 85 [2022-09-16 11:04:47,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:04:47,946 INFO L495 AbstractCegarLoop]: Abstraction has 150924 states and 670723 transitions. [2022-09-16 11:04:47,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 42.5) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:47,946 INFO L276 IsEmpty]: Start isEmpty. Operand 150924 states and 670723 transitions. [2022-09-16 11:04:47,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-09-16 11:04:47,967 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:04:47,968 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] [2022-09-16 11:04:47,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:04:47,968 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:04:47,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:04:47,968 INFO L85 PathProgramCache]: Analyzing trace with hash -98259509, now seen corresponding path program 1 times [2022-09-16 11:04:47,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:04:47,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091408879] [2022-09-16 11:04:47,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:04:47,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:04:48,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:04:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:04:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:04:48,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091408879] [2022-09-16 11:04:48,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091408879] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:04:48,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:04:48,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:04:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318179616] [2022-09-16 11:04:48,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:04:48,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:04:48,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:04:48,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:04:48,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:04:48,118 INFO L87 Difference]: Start difference. First operand 150924 states and 670723 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:04:51,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:04:51,202 INFO L93 Difference]: Finished difference Result 147869 states and 660159 transitions. [2022-09-16 11:04:51,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:04:51,203 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-09-16 11:04:51,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:04:53,550 INFO L225 Difference]: With dead ends: 147869 [2022-09-16 11:04:53,550 INFO L226 Difference]: Without dead ends: 147869 [2022-09-16 11:04:53,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:04:53,552 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 496 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:04:53,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 316 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:04:54,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147869 states. [2022-09-16 11:04:59,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147869 to 147869. [2022-09-16 11:05:00,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147869 states, 147797 states have (on average 4.466660351698613) internal successors, (660159), 147868 states have internal predecessors, (660159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:05:01,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147869 states to 147869 states and 660159 transitions. [2022-09-16 11:05:01,412 INFO L78 Accepts]: Start accepts. Automaton has 147869 states and 660159 transitions. Word has length 86 [2022-09-16 11:05:01,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:05:01,412 INFO L495 AbstractCegarLoop]: Abstraction has 147869 states and 660159 transitions. [2022-09-16 11:05:01,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:05:01,412 INFO L276 IsEmpty]: Start isEmpty. Operand 147869 states and 660159 transitions. [2022-09-16 11:05:01,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-09-16 11:05:01,413 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:05:01,413 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:05:01,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:05:01,414 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:05:01,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:05:01,414 INFO L85 PathProgramCache]: Analyzing trace with hash -832686742, now seen corresponding path program 1 times [2022-09-16 11:05:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:05:01,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098263313] [2022-09-16 11:05:01,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:05:01,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:05:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:05:01,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:05:01,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:05:01,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098263313] [2022-09-16 11:05:01,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098263313] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:05:01,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232302457] [2022-09-16 11:05:01,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:05:01,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:05:01,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:05:01,456 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 11:05:01,457 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 11:05:01,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:05:01,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:05:01,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:05:01,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:05:01,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:05:01,935 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:05:01,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232302457] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:05:01,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:05:01,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:05:01,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107592345] [2022-09-16 11:05:01,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:05:01,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:05:01,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:05:01,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:05:01,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:05:01,937 INFO L87 Difference]: Start difference. First operand 147869 states and 660159 transitions. Second operand has 23 states, 23 states have (on average 7.739130434782608) internal successors, (178), 23 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:05:10,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:05:10,325 INFO L93 Difference]: Finished difference Result 402164 states and 1762938 transitions. [2022-09-16 11:05:10,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-09-16 11:05:10,325 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 7.739130434782608) internal successors, (178), 23 states have internal predecessors, (178), 0 states have call successors, (0), 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 86 [2022-09-16 11:05:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:05:15,076 INFO L225 Difference]: With dead ends: 402164 [2022-09-16 11:05:15,076 INFO L226 Difference]: Without dead ends: 400976 [2022-09-16 11:05:15,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=413, Invalid=1479, Unknown=0, NotChecked=0, Total=1892 [2022-09-16 11:05:15,077 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 3201 mSDsluCounter, 3504 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3201 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 1158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:05:15,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3201 Valid, 3252 Invalid, 1158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-09-16 11:05:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400976 states. [2022-09-16 11:05:29,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400976 to 268672. [2022-09-16 11:05:30,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268672 states, 268600 states have (on average 4.504032017870439) internal successors, (1209783), 268671 states have internal predecessors, (1209783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:05:33,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268672 states to 268672 states and 1209783 transitions. [2022-09-16 11:05:33,779 INFO L78 Accepts]: Start accepts. Automaton has 268672 states and 1209783 transitions. Word has length 86 [2022-09-16 11:05:33,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:05:33,779 INFO L495 AbstractCegarLoop]: Abstraction has 268672 states and 1209783 transitions. [2022-09-16 11:05:33,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.739130434782608) internal successors, (178), 23 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:05:33,779 INFO L276 IsEmpty]: Start isEmpty. Operand 268672 states and 1209783 transitions. [2022-09-16 11:05:33,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-09-16 11:05:33,781 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:05:33,782 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 11:05:33,811 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 11:05:33,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:05:33,995 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:05:33,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:05:33,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2120837811, now seen corresponding path program 1 times [2022-09-16 11:05:33,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:05:33,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687567390] [2022-09-16 11:05:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:05:33,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:05:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:05:34,507 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 11:05:34,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:05:34,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687567390] [2022-09-16 11:05:34,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687567390] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:05:34,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771545314] [2022-09-16 11:05:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:05:34,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:05:34,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:05:34,509 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 11:05:34,511 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 11:05:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:05:34,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:05:34,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:05:34,693 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 11:05:34,748 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:05:34,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-09-16 11:05:35,471 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:05:35,472 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-09-16 11:05:35,684 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-16 11:05:36,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:05:36,035 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 11:05:36,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:05:36,102 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 11:05:36,179 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 11:05:36,205 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 11:05:36,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:05:36,265 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_305 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:05:36,300 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:05:36,338 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) c_~A~0.base) c_~A~0.offset) 2147483649)) is different from false [2022-09-16 11:05:36,354 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_main_#t~ret17#1.base|) |c_ULTIMATE.start_main_#t~ret17#1.offset|) 2147483649)) is different from false [2022-09-16 11:05:36,376 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 2147483649)) is different from false [2022-09-16 11:05:36,381 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_304 (Array Int Int)) (v_ArrVal_303 (Array Int Int)) (v_ArrVal_305 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_303) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_304) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_305) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 2147483649)) is different from false [2022-09-16 11:05:36,441 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:05:36,441 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 28 treesize of output 29 [2022-09-16 11:05:36,463 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:05:36,463 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 490 treesize of output 476 [2022-09-16 11:05:36,485 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 462 treesize of output 446 [2022-09-16 11:05:36,494 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 446 treesize of output 438 [2022-09-16 11:05:36,508 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 438 treesize of output 406 [2022-09-16 11:05:38,220 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 11:05:38,224 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 11:05:38,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-09-16 11:05:38,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771545314] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:05:38,272 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:05:38,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 43 [2022-09-16 11:05:38,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20998842] [2022-09-16 11:05:38,272 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:05:38,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-09-16 11:05:38,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:05:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-09-16 11:05:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1251, Unknown=6, NotChecked=462, Total=1892 [2022-09-16 11:05:38,274 INFO L87 Difference]: Start difference. First operand 268672 states and 1209783 transitions. Second operand has 44 states, 43 states have (on average 4.906976744186046) internal successors, (211), 44 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:05:47,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:05:47,703 INFO L93 Difference]: Finished difference Result 380240 states and 1712947 transitions. [2022-09-16 11:05:47,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:05:47,704 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 4.906976744186046) internal successors, (211), 44 states have internal predecessors, (211), 0 states have call successors, (0), 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 11:05:47,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:05:54,450 INFO L225 Difference]: With dead ends: 380240 [2022-09-16 11:05:54,451 INFO L226 Difference]: Without dead ends: 380240 [2022-09-16 11:05:54,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 142 SyntacticMatches, 11 SemanticMatches, 54 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=361, Invalid=2107, Unknown=6, NotChecked=606, Total=3080 [2022-09-16 11:05:54,452 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 336 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1053 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:05:54,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 2694 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 777 Invalid, 0 Unknown, 1053 Unchecked, 0.6s Time] [2022-09-16 11:05:55,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380240 states. [2022-09-16 11:06:12,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380240 to 272150. [2022-09-16 11:06:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272150 states, 272078 states have (on average 4.5010842478995) internal successors, (1224646), 272149 states have internal predecessors, (1224646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:06:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272150 states to 272150 states and 1224646 transitions. [2022-09-16 11:06:16,878 INFO L78 Accepts]: Start accepts. Automaton has 272150 states and 1224646 transitions. Word has length 87 [2022-09-16 11:06:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:06:16,878 INFO L495 AbstractCegarLoop]: Abstraction has 272150 states and 1224646 transitions. [2022-09-16 11:06:16,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 4.906976744186046) internal successors, (211), 44 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:06:16,878 INFO L276 IsEmpty]: Start isEmpty. Operand 272150 states and 1224646 transitions. [2022-09-16 11:06:16,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:06:16,881 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:06:16,881 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] [2022-09-16 11:06:16,905 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 11:06:17,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:06:17,104 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-09-16 11:06:17,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:06:17,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1984349808, now seen corresponding path program 1 times [2022-09-16 11:06:17,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:06:17,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57974559] [2022-09-16 11:06:17,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:06:17,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:06:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:06:17,185 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 11:06:17,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:06:17,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57974559] [2022-09-16 11:06:17,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57974559] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:06:17,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:06:17,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:06:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148698528] [2022-09-16 11:06:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:06:17,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:06:17,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:06:17,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:06:17,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:06:17,187 INFO L87 Difference]: Start difference. First operand 272150 states and 1224646 transitions. Second operand has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)