/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-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:12:09,300 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:12:09,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:12:09,338 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:12:09,339 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:12:09,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:12:09,344 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:12:09,345 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:12:09,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:12:09,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:12:09,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:12:09,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:12:09,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:12:09,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:12:09,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:12:09,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:12:09,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:12:09,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:12:09,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:12:09,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:12:09,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:12:09,365 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:12:09,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:12:09,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:12:09,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:12:09,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:12:09,373 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:12:09,374 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:12:09,375 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:12:09,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:12:09,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:12:09,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:12:09,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:12:09,377 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:12:09,378 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:12:09,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:12:09,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:12:09,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:12:09,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:12:09,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:12:09,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:12:09,380 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 11:12:09,406 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:12:09,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:12:09,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:12:09,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:12:09,407 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:12:09,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:12:09,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:12:09,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:12:09,408 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:12:09,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:12:09,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:12:09,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:12:09,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:12:09,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:12:09,411 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:12:09,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:12:09,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:12:09,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:12:09,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:12:09,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:12:09,645 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:12:09,645 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:12:09,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-09-16 11:12:09,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe475cce7/c0fa83c178b24c11a903574aadec6ea5/FLAG637e4b3ff [2022-09-16 11:12:10,101 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:12:10,102 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-09-16 11:12:10,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe475cce7/c0fa83c178b24c11a903574aadec6ea5/FLAG637e4b3ff [2022-09-16 11:12:10,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe475cce7/c0fa83c178b24c11a903574aadec6ea5 [2022-09-16 11:12:10,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:12:10,507 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:12:10,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:12:10,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:12:10,515 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:12:10,516 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78467d9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10, skipping insertion in model container [2022-09-16 11:12:10,518 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:12:10,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:12:10,756 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-send-receive-alt.wvr.c[2650,2663] [2022-09-16 11:12:10,763 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:12:10,769 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:12:10,803 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-send-receive-alt.wvr.c[2650,2663] [2022-09-16 11:12:10,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:12:10,817 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:12:10,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10 WrapperNode [2022-09-16 11:12:10,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:12:10,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:12:10,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:12:10,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:12:10,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,864 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 152 [2022-09-16 11:12:10,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:12:10,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:12:10,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:12:10,865 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:12:10,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:12:10,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:12:10,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:12:10,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:12:10,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (1/1) ... [2022-09-16 11:12:10,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:12:10,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:10,955 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 11:12:10,968 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 11:12:11,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:12:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:12:11,011 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:12:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:12:11,012 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:12:11,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:12:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:12:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:12:11,014 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 11:12:11,110 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:12:11,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:12:11,442 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:12:11,548 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:12:11,548 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-09-16 11:12:11,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:12:11 BoogieIcfgContainer [2022-09-16 11:12:11,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:12:11,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:12:11,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:12:11,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:12:11,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:12:10" (1/3) ... [2022-09-16 11:12:11,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43142e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:12:11, skipping insertion in model container [2022-09-16 11:12:11,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:12:10" (2/3) ... [2022-09-16 11:12:11,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43142e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:12:11, skipping insertion in model container [2022-09-16 11:12:11,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:12:11" (3/3) ... [2022-09-16 11:12:11,556 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-09-16 11:12:11,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:12:11,568 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:12:11,569 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-09-16 11:12:11,569 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:12:11,631 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-16 11:12:11,681 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 140 places, 144 transitions, 304 flow [2022-09-16 11:12:11,768 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1094 states, 1068 states have (on average 2.808988764044944) internal successors, (3000), 1093 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:11,783 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:12:11,789 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;@2e00d1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:12:11,790 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-09-16 11:12:11,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 1094 states, 1068 states have (on average 2.808988764044944) internal successors, (3000), 1093 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:11,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-09-16 11:12:11,800 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:11,801 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] [2022-09-16 11:12:11,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:11,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:11,806 INFO L85 PathProgramCache]: Analyzing trace with hash 45377837, now seen corresponding path program 1 times [2022-09-16 11:12:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:11,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013226949] [2022-09-16 11:12:11,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:12,048 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 11:12:12,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013226949] [2022-09-16 11:12:12,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013226949] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:12,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:12,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:12:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652306356] [2022-09-16 11:12:12,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:12,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:12,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:12,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:12,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:12:12,087 INFO L87 Difference]: Start difference. First operand has 1094 states, 1068 states have (on average 2.808988764044944) internal successors, (3000), 1093 states have internal predecessors, (3000), 0 states have call successors, (0), 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 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:12,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:12,213 INFO L93 Difference]: Finished difference Result 1948 states and 5120 transitions. [2022-09-16 11:12:12,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:12:12,215 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-09-16 11:12:12,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:12,238 INFO L225 Difference]: With dead ends: 1948 [2022-09-16 11:12:12,239 INFO L226 Difference]: Without dead ends: 1908 [2022-09-16 11:12:12,240 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 11:12:12,242 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 60 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:12,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 284 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:12,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-09-16 11:12:12,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 986. [2022-09-16 11:12:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 986 states, 962 states have (on average 2.6424116424116426) internal successors, (2542), 985 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:12,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 2542 transitions. [2022-09-16 11:12:12,344 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 2542 transitions. Word has length 54 [2022-09-16 11:12:12,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:12,344 INFO L495 AbstractCegarLoop]: Abstraction has 986 states and 2542 transitions. [2022-09-16 11:12:12,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:12,345 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 2542 transitions. [2022-09-16 11:12:12,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-09-16 11:12:12,347 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:12,347 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] [2022-09-16 11:12:12,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:12:12,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -696994827, now seen corresponding path program 1 times [2022-09-16 11:12:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:12,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910839191] [2022-09-16 11:12:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:12,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:12,522 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 11:12:12,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910839191] [2022-09-16 11:12:12,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910839191] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:12,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:12,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:12:12,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769806443] [2022-09-16 11:12:12,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:12,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:12:12,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:12:12,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:12,525 INFO L87 Difference]: Start difference. First operand 986 states and 2542 transitions. Second operand has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:12,595 INFO L93 Difference]: Finished difference Result 1419 states and 3696 transitions. [2022-09-16 11:12:12,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:12:12,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-09-16 11:12:12,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:12,602 INFO L225 Difference]: With dead ends: 1419 [2022-09-16 11:12:12,603 INFO L226 Difference]: Without dead ends: 1359 [2022-09-16 11:12:12,603 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 11:12:12,604 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 56 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:12,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 137 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2022-09-16 11:12:12,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1112. [2022-09-16 11:12:12,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1112 states, 1084 states have (on average 2.6715867158671585) internal successors, (2896), 1111 states have internal predecessors, (2896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:12,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1112 states to 1112 states and 2896 transitions. [2022-09-16 11:12:12,646 INFO L78 Accepts]: Start accepts. Automaton has 1112 states and 2896 transitions. Word has length 61 [2022-09-16 11:12:12,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:12,653 INFO L495 AbstractCegarLoop]: Abstraction has 1112 states and 2896 transitions. [2022-09-16 11:12:12,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 30.5) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:12,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1112 states and 2896 transitions. [2022-09-16 11:12:12,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-09-16 11:12:12,656 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:12,656 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] [2022-09-16 11:12:12,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:12:12,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash -778668931, now seen corresponding path program 1 times [2022-09-16 11:12:12,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:12,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456375431] [2022-09-16 11:12:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:12,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:12,715 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 11:12:12,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456375431] [2022-09-16 11:12:12,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456375431] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:12,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969689659] [2022-09-16 11:12:12,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:12,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:12,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:12,731 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 11:12:12,763 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 11:12:12,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:12,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:12:12,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:12,895 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 11:12:12,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:12,955 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 11:12:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969689659] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:12,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:12:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754584146] [2022-09-16 11:12:12,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:12:12,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:12:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:12:12,957 INFO L87 Difference]: Start difference. First operand 1112 states and 2896 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:13,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:13,215 INFO L93 Difference]: Finished difference Result 5327 states and 14242 transitions. [2022-09-16 11:12:13,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:12:13,216 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 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 63 [2022-09-16 11:12:13,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:13,239 INFO L225 Difference]: With dead ends: 5327 [2022-09-16 11:12:13,240 INFO L226 Difference]: Without dead ends: 5327 [2022-09-16 11:12:13,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:12:13,244 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 481 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:13,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 721 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5327 states. [2022-09-16 11:12:13,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5327 to 1138. [2022-09-16 11:12:13,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1110 states have (on average 2.636936936936937) internal successors, (2927), 1137 states have internal predecessors, (2927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:13,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 2927 transitions. [2022-09-16 11:12:13,303 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 2927 transitions. Word has length 63 [2022-09-16 11:12:13,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:13,303 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 2927 transitions. [2022-09-16 11:12:13,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:13,304 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 2927 transitions. [2022-09-16 11:12:13,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-09-16 11:12:13,307 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:13,308 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] [2022-09-16 11:12:13,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:13,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:13,524 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:13,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1631067334, now seen corresponding path program 1 times [2022-09-16 11:12:13,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:13,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585999242] [2022-09-16 11:12:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:13,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:13,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:13,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585999242] [2022-09-16 11:12:13,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585999242] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:13,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317341257] [2022-09-16 11:12:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:13,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:13,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:13,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:13,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:12:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:13,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:12:13,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:13,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:13,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317341257] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:13,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:13,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:12:13,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782161273] [2022-09-16 11:12:13,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:13,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:12:13,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:13,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:12:13,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:12:13,661 INFO L87 Difference]: Start difference. First operand 1138 states and 2927 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:13,755 INFO L93 Difference]: Finished difference Result 2183 states and 5752 transitions. [2022-09-16 11:12:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:12:13,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-09-16 11:12:13,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:13,764 INFO L225 Difference]: With dead ends: 2183 [2022-09-16 11:12:13,764 INFO L226 Difference]: Without dead ends: 2183 [2022-09-16 11:12:13,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:12:13,767 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 120 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:13,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 537 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:13,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2183 states. [2022-09-16 11:12:13,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2183 to 1137. [2022-09-16 11:12:13,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1110 states have (on average 2.6342342342342344) internal successors, (2924), 1136 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:13,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 2924 transitions. [2022-09-16 11:12:13,798 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 2924 transitions. Word has length 64 [2022-09-16 11:12:13,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:13,798 INFO L495 AbstractCegarLoop]: Abstraction has 1137 states and 2924 transitions. [2022-09-16 11:12:13,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:13,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 2924 transitions. [2022-09-16 11:12:13,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-09-16 11:12:13,800 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:13,800 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:13,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:14,018 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,SelfDestructingSolverStorable3 [2022-09-16 11:12:14,018 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:14,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:14,019 INFO L85 PathProgramCache]: Analyzing trace with hash 62535906, now seen corresponding path program 1 times [2022-09-16 11:12:14,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:14,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618333620] [2022-09-16 11:12:14,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:14,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:14,145 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 11:12:14,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:14,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618333620] [2022-09-16 11:12:14,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618333620] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:14,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:14,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-16 11:12:14,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797367346] [2022-09-16 11:12:14,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:14,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-16 11:12:14,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:14,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-16 11:12:14,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:12:14,146 INFO L87 Difference]: Start difference. First operand 1137 states and 2924 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 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 11:12:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:14,329 INFO L93 Difference]: Finished difference Result 1845 states and 4771 transitions. [2022-09-16 11:12:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:12:14,330 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-09-16 11:12:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:14,337 INFO L225 Difference]: With dead ends: 1845 [2022-09-16 11:12:14,337 INFO L226 Difference]: Without dead ends: 1785 [2022-09-16 11:12:14,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-09-16 11:12:14,338 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 431 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:14,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 546 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2022-09-16 11:12:14,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 1591. [2022-09-16 11:12:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1591 states, 1564 states have (on average 2.641304347826087) internal successors, (4131), 1590 states have internal predecessors, (4131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:14,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1591 states to 1591 states and 4131 transitions. [2022-09-16 11:12:14,372 INFO L78 Accepts]: Start accepts. Automaton has 1591 states and 4131 transitions. Word has length 75 [2022-09-16 11:12:14,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:14,374 INFO L495 AbstractCegarLoop]: Abstraction has 1591 states and 4131 transitions. [2022-09-16 11:12:14,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 9 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 11:12:14,374 INFO L276 IsEmpty]: Start isEmpty. Operand 1591 states and 4131 transitions. [2022-09-16 11:12:14,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-09-16 11:12:14,375 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:14,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:14,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:12:14,375 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:14,376 INFO L85 PathProgramCache]: Analyzing trace with hash 62535907, now seen corresponding path program 1 times [2022-09-16 11:12:14,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:14,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354629857] [2022-09-16 11:12:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:14,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:14,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:14,448 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 11:12:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354629857] [2022-09-16 11:12:14,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354629857] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:14,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:14,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:12:14,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084610283] [2022-09-16 11:12:14,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:14,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:12:14,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:12:14,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:14,450 INFO L87 Difference]: Start difference. First operand 1591 states and 4131 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 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 11:12:14,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:14,489 INFO L93 Difference]: Finished difference Result 1505 states and 3845 transitions. [2022-09-16 11:12:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:12:14,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-09-16 11:12:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:14,495 INFO L225 Difference]: With dead ends: 1505 [2022-09-16 11:12:14,495 INFO L226 Difference]: Without dead ends: 1051 [2022-09-16 11:12:14,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:12:14,496 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 143 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:14,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 210 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:14,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1051 states. [2022-09-16 11:12:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1051 to 1051. [2022-09-16 11:12:14,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1051 states, 1034 states have (on average 2.6102514506769827) internal successors, (2699), 1050 states have internal predecessors, (2699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:14,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 2699 transitions. [2022-09-16 11:12:14,515 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 2699 transitions. Word has length 75 [2022-09-16 11:12:14,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:14,515 INFO L495 AbstractCegarLoop]: Abstraction has 1051 states and 2699 transitions. [2022-09-16 11:12:14,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 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 11:12:14,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 2699 transitions. [2022-09-16 11:12:14,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-09-16 11:12:14,516 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:14,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:14,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:12:14,517 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:14,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:14,518 INFO L85 PathProgramCache]: Analyzing trace with hash 2129092498, now seen corresponding path program 1 times [2022-09-16 11:12:14,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:14,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635788729] [2022-09-16 11:12:14,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:14,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:14,637 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 11:12:14,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:14,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635788729] [2022-09-16 11:12:14,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635788729] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:14,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444801876] [2022-09-16 11:12:14,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:14,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:14,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:14,638 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:14,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:12:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:14,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:12:14,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:14,853 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 11:12:14,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:14,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [444801876] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:14,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:14,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 15 [2022-09-16 11:12:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408970373] [2022-09-16 11:12:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:14,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:12:14,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:12:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:12:14,854 INFO L87 Difference]: Start difference. First operand 1051 states and 2699 transitions. Second operand has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:14,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:14,998 INFO L93 Difference]: Finished difference Result 873 states and 2210 transitions. [2022-09-16 11:12:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:12:14,999 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-09-16 11:12:14,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:15,001 INFO L225 Difference]: With dead ends: 873 [2022-09-16 11:12:15,002 INFO L226 Difference]: Without dead ends: 602 [2022-09-16 11:12:15,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2022-09-16 11:12:15,006 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 108 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:15,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 547 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-09-16 11:12:15,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2022-09-16 11:12:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 597 states have (on average 2.4271356783919598) internal successors, (1449), 601 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1449 transitions. [2022-09-16 11:12:15,019 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1449 transitions. Word has length 84 [2022-09-16 11:12:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:15,019 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 1449 transitions. [2022-09-16 11:12:15,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1449 transitions. [2022-09-16 11:12:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-09-16 11:12:15,020 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:15,020 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 11:12:15,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:15,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:15,234 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:15,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:15,235 INFO L85 PathProgramCache]: Analyzing trace with hash -281915859, now seen corresponding path program 1 times [2022-09-16 11:12:15,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:15,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707248089] [2022-09-16 11:12:15,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:15,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:15,356 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 11:12:15,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:15,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707248089] [2022-09-16 11:12:15,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707248089] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:15,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:15,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:12:15,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013853760] [2022-09-16 11:12:15,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:15,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-16 11:12:15,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:15,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-16 11:12:15,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:15,359 INFO L87 Difference]: Start difference. First operand 602 states and 1449 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:15,398 INFO L93 Difference]: Finished difference Result 1146 states and 2977 transitions. [2022-09-16 11:12:15,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:12:15,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-09-16 11:12:15,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:15,410 INFO L225 Difference]: With dead ends: 1146 [2022-09-16 11:12:15,410 INFO L226 Difference]: Without dead ends: 1146 [2022-09-16 11:12:15,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 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 11:12:15,411 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 140 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:15,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 245 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:15,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2022-09-16 11:12:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 806. [2022-09-16 11:12:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 801 states have (on average 2.5243445692883895) internal successors, (2022), 805 states have internal predecessors, (2022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 2022 transitions. [2022-09-16 11:12:15,432 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 2022 transitions. Word has length 87 [2022-09-16 11:12:15,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:15,432 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 2022 transitions. [2022-09-16 11:12:15,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 2022 transitions. [2022-09-16 11:12:15,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-09-16 11:12:15,435 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:15,436 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 11:12:15,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:12:15,436 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:15,437 INFO L85 PathProgramCache]: Analyzing trace with hash -280902965, now seen corresponding path program 1 times [2022-09-16 11:12:15,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:15,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923546354] [2022-09-16 11:12:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:15,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:15,479 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 11:12:15,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:15,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923546354] [2022-09-16 11:12:15,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923546354] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:15,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:15,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:12:15,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804298945] [2022-09-16 11:12:15,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:15,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:12:15,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:12:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:15,482 INFO L87 Difference]: Start difference. First operand 806 states and 2022 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:15,499 INFO L93 Difference]: Finished difference Result 826 states and 2069 transitions. [2022-09-16 11:12:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:12:15,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-09-16 11:12:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:15,502 INFO L225 Difference]: With dead ends: 826 [2022-09-16 11:12:15,502 INFO L226 Difference]: Without dead ends: 826 [2022-09-16 11:12:15,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:15,504 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 10 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:15,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 187 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:15,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-09-16 11:12:15,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 794. [2022-09-16 11:12:15,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 789 states have (on average 2.510773130544994) internal successors, (1981), 793 states have internal predecessors, (1981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1981 transitions. [2022-09-16 11:12:15,521 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1981 transitions. Word has length 87 [2022-09-16 11:12:15,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:15,521 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 1981 transitions. [2022-09-16 11:12:15,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1981 transitions. [2022-09-16 11:12:15,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-09-16 11:12:15,523 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:15,523 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:15,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:12:15,523 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:15,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:15,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1893728656, now seen corresponding path program 1 times [2022-09-16 11:12:15,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163909072] [2022-09-16 11:12:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:15,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:15,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:15,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163909072] [2022-09-16 11:12:15,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163909072] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:15,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543595350] [2022-09-16 11:12:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:15,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:15,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:15,585 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:15,607 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 11:12:15,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:15,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2022-09-16 11:12:15,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:15,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:15,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:15,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543595350] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:15,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:15,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4 [2022-09-16 11:12:15,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458795720] [2022-09-16 11:12:15,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:15,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:15,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:15,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:15,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:15,735 INFO L87 Difference]: Start difference. First operand 794 states and 1981 transitions. Second operand has 4 states, 3 states have (on average 30.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:15,763 INFO L93 Difference]: Finished difference Result 1542 states and 4014 transitions. [2022-09-16 11:12:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:12:15,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 30.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-09-16 11:12:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:15,768 INFO L225 Difference]: With dead ends: 1542 [2022-09-16 11:12:15,768 INFO L226 Difference]: Without dead ends: 1422 [2022-09-16 11:12:15,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 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 11:12:15,769 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 88 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:15,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 186 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2022-09-16 11:12:15,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1286. [2022-09-16 11:12:15,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1281 states have (on average 2.6838407494145198) internal successors, (3438), 1285 states have internal predecessors, (3438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 3438 transitions. [2022-09-16 11:12:15,792 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 3438 transitions. Word has length 90 [2022-09-16 11:12:15,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:15,793 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 3438 transitions. [2022-09-16 11:12:15,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 30.0) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:15,793 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 3438 transitions. [2022-09-16 11:12:15,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-09-16 11:12:15,794 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:15,794 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:15,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:16,030 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 11:12:16,032 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:16,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:16,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2112266963, now seen corresponding path program 2 times [2022-09-16 11:12:16,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:16,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176785133] [2022-09-16 11:12:16,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:16,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:16,147 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:16,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:16,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176785133] [2022-09-16 11:12:16,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176785133] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:16,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008557069] [2022-09-16 11:12:16,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:16,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:16,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:16,150 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 11:12:16,150 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 11:12:16,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:12:16,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:16,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:12:16,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:16,329 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:12:16,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:12:16,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008557069] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:16,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:16,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:12:16,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23945335] [2022-09-16 11:12:16,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:12:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:12:16,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:12:16,446 INFO L87 Difference]: Start difference. First operand 1286 states and 3438 transitions. Second operand has 18 states, 17 states have (on average 7.823529411764706) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:16,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:16,854 INFO L93 Difference]: Finished difference Result 7273 states and 20167 transitions. [2022-09-16 11:12:16,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:12:16,855 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.823529411764706) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 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 90 [2022-09-16 11:12:16,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:16,877 INFO L225 Difference]: With dead ends: 7273 [2022-09-16 11:12:16,877 INFO L226 Difference]: Without dead ends: 7273 [2022-09-16 11:12:16,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:12:16,878 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 1462 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:16,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 676 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7273 states. [2022-09-16 11:12:16,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7273 to 1253. [2022-09-16 11:12:16,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 1249 states have (on average 2.723779023218575) internal successors, (3402), 1252 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 3402 transitions. [2022-09-16 11:12:16,944 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 3402 transitions. Word has length 90 [2022-09-16 11:12:16,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:16,944 INFO L495 AbstractCegarLoop]: Abstraction has 1253 states and 3402 transitions. [2022-09-16 11:12:16,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.823529411764706) internal successors, (133), 18 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:16,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 3402 transitions. [2022-09-16 11:12:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-09-16 11:12:16,946 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:16,946 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:16,977 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 11:12:17,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-09-16 11:12:17,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:17,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1824260204, now seen corresponding path program 1 times [2022-09-16 11:12:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:17,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804997604] [2022-09-16 11:12:17,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:17,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:17,204 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-09-16 11:12:17,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:17,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804997604] [2022-09-16 11:12:17,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804997604] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:17,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:17,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-16 11:12:17,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417688750] [2022-09-16 11:12:17,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:17,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:17,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:17,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:17,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:12:17,205 INFO L87 Difference]: Start difference. First operand 1253 states and 3402 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:17,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:17,229 INFO L93 Difference]: Finished difference Result 2021 states and 5506 transitions. [2022-09-16 11:12:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:12:17,229 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2022-09-16 11:12:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:17,234 INFO L225 Difference]: With dead ends: 2021 [2022-09-16 11:12:17,234 INFO L226 Difference]: Without dead ends: 2021 [2022-09-16 11:12:17,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:12:17,235 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 36 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:17,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 301 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:17,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2022-09-16 11:12:17,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1801. [2022-09-16 11:12:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1797 states have (on average 2.765164162493044) internal successors, (4969), 1800 states have internal predecessors, (4969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:17,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 4969 transitions. [2022-09-16 11:12:17,269 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 4969 transitions. Word has length 101 [2022-09-16 11:12:17,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:17,269 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 4969 transitions. [2022-09-16 11:12:17,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:17,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 4969 transitions. [2022-09-16 11:12:17,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-09-16 11:12:17,270 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:17,270 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:17,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-09-16 11:12:17,271 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:17,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:17,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1713906122, now seen corresponding path program 1 times [2022-09-16 11:12:17,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:17,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344497160] [2022-09-16 11:12:17,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:17,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:17,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:17,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344497160] [2022-09-16 11:12:17,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344497160] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:17,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739518472] [2022-09-16 11:12:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:17,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:17,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:17,435 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 11:12:17,466 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 11:12:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:17,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 17 conjunts are in the unsatisfiable core [2022-09-16 11:12:17,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:17,716 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-16 11:12:17,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:17,938 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-16 11:12:17,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739518472] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:17,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:17,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 27 [2022-09-16 11:12:17,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811918961] [2022-09-16 11:12:17,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:17,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-16 11:12:17,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:17,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-16 11:12:17,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:12:17,940 INFO L87 Difference]: Start difference. First operand 1801 states and 4969 transitions. Second operand has 27 states, 27 states have (on average 7.481481481481482) internal successors, (202), 27 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:18,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:18,712 INFO L93 Difference]: Finished difference Result 2528 states and 6722 transitions. [2022-09-16 11:12:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:12:18,713 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 7.481481481481482) internal successors, (202), 27 states have internal predecessors, (202), 0 states have call successors, (0), 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 101 [2022-09-16 11:12:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:18,717 INFO L225 Difference]: With dead ends: 2528 [2022-09-16 11:12:18,717 INFO L226 Difference]: Without dead ends: 1817 [2022-09-16 11:12:18,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 188 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=542, Invalid=1714, Unknown=0, NotChecked=0, Total=2256 [2022-09-16 11:12:18,718 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 1319 mSDsluCounter, 1575 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:18,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 1677 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:12:18,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2022-09-16 11:12:18,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1810. [2022-09-16 11:12:18,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1806 states have (on average 2.7563676633444074) internal successors, (4978), 1809 states have internal predecessors, (4978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:18,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 4978 transitions. [2022-09-16 11:12:18,752 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 4978 transitions. Word has length 101 [2022-09-16 11:12:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:18,752 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 4978 transitions. [2022-09-16 11:12:18,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 7.481481481481482) internal successors, (202), 27 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 4978 transitions. [2022-09-16 11:12:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-09-16 11:12:18,754 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:18,754 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:18,790 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 11:12:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:18,971 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1224931098, now seen corresponding path program 2 times [2022-09-16 11:12:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:18,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209435165] [2022-09-16 11:12:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:19,035 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:19,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209435165] [2022-09-16 11:12:19,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209435165] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:19,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124905655] [2022-09-16 11:12:19,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:19,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:19,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:19,052 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:19,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:12:19,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:12:19,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 52 conjunts are in the unsatisfiable core [2022-09-16 11:12:19,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:19,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:20,066 INFO L356 Elim1Store]: treesize reduction 14, result has 73.6 percent of original size [2022-09-16 11:12:20,066 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 55 [2022-09-16 11:12:20,882 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:20,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124905655] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:20,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:20,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 19, 14] total 36 [2022-09-16 11:12:20,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102907489] [2022-09-16 11:12:20,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:20,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-09-16 11:12:20,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:20,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-09-16 11:12:20,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=976, Unknown=0, NotChecked=0, Total=1332 [2022-09-16 11:12:20,884 INFO L87 Difference]: Start difference. First operand 1810 states and 4978 transitions. Second operand has 37 states, 36 states have (on average 8.305555555555555) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:22,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:22,303 INFO L93 Difference]: Finished difference Result 8129 states and 22629 transitions. [2022-09-16 11:12:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-09-16 11:12:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 8.305555555555555) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 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 110 [2022-09-16 11:12:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:22,329 INFO L225 Difference]: With dead ends: 8129 [2022-09-16 11:12:22,329 INFO L226 Difference]: Without dead ends: 8009 [2022-09-16 11:12:22,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1799 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1344, Invalid=4058, Unknown=0, NotChecked=0, Total=5402 [2022-09-16 11:12:22,331 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 1823 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 886 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 2328 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:22,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 2328 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 886 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-09-16 11:12:22,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8009 states. [2022-09-16 11:12:22,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8009 to 4906. [2022-09-16 11:12:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4906 states, 4902 states have (on average 2.9502243982048144) internal successors, (14462), 4905 states have internal predecessors, (14462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:22,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4906 states to 4906 states and 14462 transitions. [2022-09-16 11:12:22,460 INFO L78 Accepts]: Start accepts. Automaton has 4906 states and 14462 transitions. Word has length 110 [2022-09-16 11:12:22,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:22,460 INFO L495 AbstractCegarLoop]: Abstraction has 4906 states and 14462 transitions. [2022-09-16 11:12:22,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 8.305555555555555) internal successors, (299), 37 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:22,460 INFO L276 IsEmpty]: Start isEmpty. Operand 4906 states and 14462 transitions. [2022-09-16 11:12:22,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-09-16 11:12:22,462 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:22,462 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:22,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:22,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:22,685 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1224931097, now seen corresponding path program 1 times [2022-09-16 11:12:22,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:22,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161579933] [2022-09-16 11:12:22,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:22,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:23,318 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:23,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:23,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161579933] [2022-09-16 11:12:23,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161579933] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:23,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593761268] [2022-09-16 11:12:23,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:23,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:23,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:23,328 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:23,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:12:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:23,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 61 conjunts are in the unsatisfiable core [2022-09-16 11:12:23,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:23,449 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 11:12:23,476 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:12:23,476 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 11:12:23,783 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:12:23,783 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 11:12:24,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:24,605 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:12:24,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:24,712 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:12:25,150 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:25,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:26,048 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:26,049 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 91 treesize of output 67 [2022-09-16 11:12:26,072 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:26,073 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 404 treesize of output 410 [2022-09-16 11:12:26,101 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:26,102 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 241 treesize of output 229 [2022-09-16 11:12:26,133 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:26,134 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 304 treesize of output 254 [2022-09-16 11:12:30,247 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:30,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593761268] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:30,247 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:30,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24, 24] total 69 [2022-09-16 11:12:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833822359] [2022-09-16 11:12:30,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:30,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-09-16 11:12:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-09-16 11:12:30,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=4402, Unknown=15, NotChecked=0, Total=4830 [2022-09-16 11:12:30,249 INFO L87 Difference]: Start difference. First operand 4906 states and 14462 transitions. Second operand has 70 states, 69 states have (on average 4.463768115942029) internal successors, (308), 70 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:33,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:33,424 INFO L93 Difference]: Finished difference Result 7003 states and 20698 transitions. [2022-09-16 11:12:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-09-16 11:12:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 4.463768115942029) internal successors, (308), 70 states have internal predecessors, (308), 0 states have call successors, (0), 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 110 [2022-09-16 11:12:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:33,447 INFO L225 Difference]: With dead ends: 7003 [2022-09-16 11:12:33,447 INFO L226 Difference]: Without dead ends: 7003 [2022-09-16 11:12:33,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 185 SyntacticMatches, 4 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3631 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=1163, Invalid=9952, Unknown=15, NotChecked=0, Total=11130 [2022-09-16 11:12:33,452 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 897 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 4360 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 457 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:33,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 4360 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 514 Invalid, 0 Unknown, 457 Unchecked, 0.3s Time] [2022-09-16 11:12:33,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2022-09-16 11:12:33,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 6517. [2022-09-16 11:12:33,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6517 states, 6513 states have (on average 3.0007676953784737) internal successors, (19544), 6516 states have internal predecessors, (19544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:33,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6517 states to 6517 states and 19544 transitions. [2022-09-16 11:12:33,630 INFO L78 Accepts]: Start accepts. Automaton has 6517 states and 19544 transitions. Word has length 110 [2022-09-16 11:12:33,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:33,630 INFO L495 AbstractCegarLoop]: Abstraction has 6517 states and 19544 transitions. [2022-09-16 11:12:33,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 4.463768115942029) internal successors, (308), 70 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:33,630 INFO L276 IsEmpty]: Start isEmpty. Operand 6517 states and 19544 transitions. [2022-09-16 11:12:33,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-09-16 11:12:33,632 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:33,632 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:33,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:33,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:12:33,850 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:33,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:33,851 INFO L85 PathProgramCache]: Analyzing trace with hash -355637935, now seen corresponding path program 2 times [2022-09-16 11:12:33,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:33,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792553289] [2022-09-16 11:12:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:33,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:33,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:12:33,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792553289] [2022-09-16 11:12:33,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792553289] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170988510] [2022-09-16 11:12:33,979 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:33,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:33,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:33,996 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:33,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:12:34,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:12:34,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:34,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 63 conjunts are in the unsatisfiable core [2022-09-16 11:12:34,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:34,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:34,304 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:12:34,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:12:34,509 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:34,738 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:34,791 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:12:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:35,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:36,138 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:36,138 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 124 treesize of output 88 [2022-09-16 11:12:36,163 INFO L356 Elim1Store]: treesize reduction 14, result has 73.6 percent of original size [2022-09-16 11:12:36,163 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 270 treesize of output 274 [2022-09-16 11:12:36,190 INFO L356 Elim1Store]: treesize reduction 14, result has 73.6 percent of original size [2022-09-16 11:12:36,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 236 treesize of output 222 [2022-09-16 11:12:36,220 INFO L356 Elim1Store]: treesize reduction 14, result has 73.6 percent of original size [2022-09-16 11:12:36,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 155 treesize of output 167 [2022-09-16 11:12:38,124 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 11:12:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:38,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170988510] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:38,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:38,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 23, 22] total 50 [2022-09-16 11:12:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914564819] [2022-09-16 11:12:38,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-09-16 11:12:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-09-16 11:12:38,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=594, Invalid=1910, Unknown=46, NotChecked=0, Total=2550 [2022-09-16 11:12:38,158 INFO L87 Difference]: Start difference. First operand 6517 states and 19544 transitions. Second operand has 51 states, 50 states have (on average 5.98) internal successors, (299), 51 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:40,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:40,762 INFO L93 Difference]: Finished difference Result 16603 states and 47950 transitions. [2022-09-16 11:12:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-09-16 11:12:40,763 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 5.98) internal successors, (299), 51 states have internal predecessors, (299), 0 states have call successors, (0), 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 110 [2022-09-16 11:12:40,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:40,804 INFO L225 Difference]: With dead ends: 16603 [2022-09-16 11:12:40,804 INFO L226 Difference]: Without dead ends: 16423 [2022-09-16 11:12:40,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3490 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2282, Invalid=8592, Unknown=46, NotChecked=0, Total=10920 [2022-09-16 11:12:40,809 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 3090 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3090 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 581 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:40,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3090 Valid, 2241 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 635 Invalid, 0 Unknown, 581 Unchecked, 0.4s Time] [2022-09-16 11:12:40,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16423 states. [2022-09-16 11:12:41,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16423 to 10315. [2022-09-16 11:12:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10315 states, 10311 states have (on average 2.972844534962661) internal successors, (30653), 10314 states have internal predecessors, (30653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:41,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10315 states to 10315 states and 30653 transitions. [2022-09-16 11:12:41,153 INFO L78 Accepts]: Start accepts. Automaton has 10315 states and 30653 transitions. Word has length 110 [2022-09-16 11:12:41,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:41,153 INFO L495 AbstractCegarLoop]: Abstraction has 10315 states and 30653 transitions. [2022-09-16 11:12:41,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 5.98) internal successors, (299), 51 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:41,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10315 states and 30653 transitions. [2022-09-16 11:12:41,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-09-16 11:12:41,157 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:41,157 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:41,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:41,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:12:41,376 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash -141126403, now seen corresponding path program 1 times [2022-09-16 11:12:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:41,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895067554] [2022-09-16 11:12:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:41,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895067554] [2022-09-16 11:12:42,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895067554] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938041154] [2022-09-16 11:12:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:42,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:42,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:42,352 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:42,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:12:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:42,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:12:42,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:43,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:43,173 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:43,177 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 70 [2022-09-16 11:12:43,998 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:43,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938041154] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:43,999 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:43,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 14, 14] total 52 [2022-09-16 11:12:43,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846636814] [2022-09-16 11:12:43,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:43,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 11:12:43,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:44,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 11:12:44,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2435, Unknown=0, NotChecked=0, Total=2756 [2022-09-16 11:12:44,001 INFO L87 Difference]: Start difference. First operand 10315 states and 30653 transitions. Second operand has 53 states, 52 states have (on average 6.096153846153846) internal successors, (317), 53 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:50,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:50,472 INFO L93 Difference]: Finished difference Result 18964 states and 53670 transitions. [2022-09-16 11:12:50,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-09-16 11:12:50,472 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 6.096153846153846) internal successors, (317), 53 states have internal predecessors, (317), 0 states have call successors, (0), 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 113 [2022-09-16 11:12:50,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:50,508 INFO L225 Difference]: With dead ends: 18964 [2022-09-16 11:12:50,511 INFO L226 Difference]: Without dead ends: 17827 [2022-09-16 11:12:50,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6225 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3145, Invalid=16595, Unknown=0, NotChecked=0, Total=19740 [2022-09-16 11:12:50,515 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 4234 mSDsluCounter, 4892 mSDsCounter, 0 mSdLazyCounter, 2456 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4234 SdHoareTripleChecker+Valid, 5084 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 2456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:50,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4234 Valid, 5084 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 2456 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-09-16 11:12:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17827 states. [2022-09-16 11:12:50,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17827 to 12734. [2022-09-16 11:12:50,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12734 states, 12729 states have (on average 2.9461073140073846) internal successors, (37501), 12733 states have internal predecessors, (37501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:50,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12734 states to 12734 states and 37501 transitions. [2022-09-16 11:12:50,850 INFO L78 Accepts]: Start accepts. Automaton has 12734 states and 37501 transitions. Word has length 113 [2022-09-16 11:12:50,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:50,851 INFO L495 AbstractCegarLoop]: Abstraction has 12734 states and 37501 transitions. [2022-09-16 11:12:50,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 6.096153846153846) internal successors, (317), 53 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:50,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12734 states and 37501 transitions. [2022-09-16 11:12:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-09-16 11:12:50,854 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:50,855 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:50,874 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:51,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:12:51,067 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1765687353, now seen corresponding path program 3 times [2022-09-16 11:12:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:51,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078557916] [2022-09-16 11:12:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:51,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:12:51,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:51,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078557916] [2022-09-16 11:12:51,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078557916] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:51,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610092429] [2022-09-16 11:12:51,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:12:51,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:51,155 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:51,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:12:51,270 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:12:51,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:51,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:12:51,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:51,359 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:12:51,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:51,619 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:12:51,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610092429] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:51,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:51,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 6] total 10 [2022-09-16 11:12:51,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093918294] [2022-09-16 11:12:51,621 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:51,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-16 11:12:51,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:51,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-16 11:12:51,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:12:51,622 INFO L87 Difference]: Start difference. First operand 12734 states and 37501 transitions. Second operand has 11 states, 10 states have (on average 18.6) internal successors, (186), 11 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:51,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:51,745 INFO L93 Difference]: Finished difference Result 18914 states and 55592 transitions. [2022-09-16 11:12:51,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:12:51,746 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 18.6) internal successors, (186), 11 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-09-16 11:12:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:51,787 INFO L225 Difference]: With dead ends: 18914 [2022-09-16 11:12:51,787 INFO L226 Difference]: Without dead ends: 18494 [2022-09-16 11:12:51,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:12:51,788 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 291 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:51,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 376 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:51,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18494 states. [2022-09-16 11:12:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18494 to 17762. [2022-09-16 11:12:52,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17762 states, 17757 states have (on average 2.971673142985865) internal successors, (52768), 17761 states have internal predecessors, (52768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17762 states to 17762 states and 52768 transitions. [2022-09-16 11:12:52,205 INFO L78 Accepts]: Start accepts. Automaton has 17762 states and 52768 transitions. Word has length 122 [2022-09-16 11:12:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:52,205 INFO L495 AbstractCegarLoop]: Abstraction has 17762 states and 52768 transitions. [2022-09-16 11:12:52,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 18.6) internal successors, (186), 11 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:52,205 INFO L276 IsEmpty]: Start isEmpty. Operand 17762 states and 52768 transitions. [2022-09-16 11:12:52,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-09-16 11:12:52,208 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:52,208 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:52,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:52,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:12:52,425 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:52,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1974210183, now seen corresponding path program 4 times [2022-09-16 11:12:52,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:52,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004640375] [2022-09-16 11:12:52,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:52,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:52,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:12:52,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004640375] [2022-09-16 11:12:52,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004640375] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:52,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960627386] [2022-09-16 11:12:52,577 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:12:52,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:52,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:52,583 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:52,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:12:52,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:12:52,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:52,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 20 conjunts are in the unsatisfiable core [2022-09-16 11:12:52,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:53,055 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:12:53,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:12:53,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960627386] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:53,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:53,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 42 [2022-09-16 11:12:53,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830383016] [2022-09-16 11:12:53,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-09-16 11:12:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-09-16 11:12:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1524, Unknown=0, NotChecked=0, Total=1722 [2022-09-16 11:12:53,303 INFO L87 Difference]: Start difference. First operand 17762 states and 52768 transitions. Second operand has 42 states, 42 states have (on average 6.476190476190476) internal successors, (272), 42 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:54,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:54,385 INFO L93 Difference]: Finished difference Result 8465 states and 24781 transitions. [2022-09-16 11:12:54,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-09-16 11:12:54,386 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 6.476190476190476) internal successors, (272), 42 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-09-16 11:12:54,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:54,400 INFO L225 Difference]: With dead ends: 8465 [2022-09-16 11:12:54,400 INFO L226 Difference]: Without dead ends: 7622 [2022-09-16 11:12:54,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 220 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1076 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1062, Invalid=4050, Unknown=0, NotChecked=0, Total=5112 [2022-09-16 11:12:54,401 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 1102 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:54,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 2706 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:12:54,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7622 states. [2022-09-16 11:12:54,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7622 to 7615. [2022-09-16 11:12:54,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7615 states, 7611 states have (on average 2.9827880698988305) internal successors, (22702), 7614 states have internal predecessors, (22702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:54,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7615 states to 7615 states and 22702 transitions. [2022-09-16 11:12:54,639 INFO L78 Accepts]: Start accepts. Automaton has 7615 states and 22702 transitions. Word has length 124 [2022-09-16 11:12:54,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:54,639 INFO L495 AbstractCegarLoop]: Abstraction has 7615 states and 22702 transitions. [2022-09-16 11:12:54,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 6.476190476190476) internal successors, (272), 42 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:54,639 INFO L276 IsEmpty]: Start isEmpty. Operand 7615 states and 22702 transitions. [2022-09-16 11:12:54,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 11:12:54,643 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:54,643 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:54,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-09-16 11:12:54,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:54,860 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:12:54,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:54,860 INFO L85 PathProgramCache]: Analyzing trace with hash -2143825169, now seen corresponding path program 5 times [2022-09-16 11:12:54,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:54,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289169613] [2022-09-16 11:12:54,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:54,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:54,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:55,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:55,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289169613] [2022-09-16 11:12:55,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289169613] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:55,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925171904] [2022-09-16 11:12:55,931 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:12:55,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:55,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:55,932 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:55,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:12:56,015 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:12:56,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:56,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 48 conjunts are in the unsatisfiable core [2022-09-16 11:12:56,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:57,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:57,448 INFO L356 Elim1Store]: treesize reduction 12, result has 82.6 percent of original size [2022-09-16 11:12:57,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 72 [2022-09-16 11:12:58,904 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:58,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925171904] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:58,904 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:58,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 23, 23] total 74 [2022-09-16 11:12:58,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583047416] [2022-09-16 11:12:58,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-09-16 11:12:58,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:58,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-09-16 11:12:58,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=593, Invalid=4957, Unknown=0, NotChecked=0, Total=5550 [2022-09-16 11:12:58,906 INFO L87 Difference]: Start difference. First operand 7615 states and 22702 transitions. Second operand has 75 states, 74 states have (on average 4.891891891891892) internal successors, (362), 75 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:20,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:20,295 INFO L93 Difference]: Finished difference Result 41354 states and 114926 transitions. [2022-09-16 11:13:20,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 299 states. [2022-09-16 11:13:20,295 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 4.891891891891892) internal successors, (362), 75 states have internal predecessors, (362), 0 states have call successors, (0), 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 133 [2022-09-16 11:13:20,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:20,426 INFO L225 Difference]: With dead ends: 41354 [2022-09-16 11:13:20,426 INFO L226 Difference]: Without dead ends: 41354 [2022-09-16 11:13:20,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 629 GetRequests, 251 SyntacticMatches, 13 SemanticMatches, 365 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52570 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=16562, Invalid=117760, Unknown=0, NotChecked=0, Total=134322 [2022-09-16 11:13:20,434 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 3640 mSDsluCounter, 18257 mSDsCounter, 0 mSdLazyCounter, 6359 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 18862 SdHoareTripleChecker+Invalid, 9262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 6359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2550 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:20,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 18862 Invalid, 9262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 6359 Invalid, 0 Unknown, 2550 Unchecked, 2.5s Time] [2022-09-16 11:13:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41354 states. [2022-09-16 11:13:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41354 to 24355. [2022-09-16 11:13:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24355 states, 24351 states have (on average 3.0319083405198963) internal successors, (73830), 24354 states have internal predecessors, (73830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24355 states to 24355 states and 73830 transitions. [2022-09-16 11:13:21,205 INFO L78 Accepts]: Start accepts. Automaton has 24355 states and 73830 transitions. Word has length 133 [2022-09-16 11:13:21,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:21,206 INFO L495 AbstractCegarLoop]: Abstraction has 24355 states and 73830 transitions. [2022-09-16 11:13:21,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 4.891891891891892) internal successors, (362), 75 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:21,206 INFO L276 IsEmpty]: Start isEmpty. Operand 24355 states and 73830 transitions. [2022-09-16 11:13:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 11:13:21,228 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:21,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:21,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:21,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2022-09-16 11:13:21,429 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:13:21,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:21,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2143825168, now seen corresponding path program 3 times [2022-09-16 11:13:21,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:21,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389537239] [2022-09-16 11:13:21,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:21,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:13:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389537239] [2022-09-16 11:13:21,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389537239] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434421406] [2022-09-16 11:13:21,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:13:21,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:21,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:21,548 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:21,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:13:21,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:13:21,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:21,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:13:21,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:13:22,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:22,105 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:13:22,105 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2022-09-16 11:13:22,345 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:13:22,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434421406] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:22,345 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:22,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-09-16 11:13:22,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970083003] [2022-09-16 11:13:22,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:22,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-16 11:13:22,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:22,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-16 11:13:22,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:13:22,346 INFO L87 Difference]: Start difference. First operand 24355 states and 73830 transitions. Second operand has 20 states, 19 states have (on average 15.421052631578947) internal successors, (293), 20 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:22,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:22,895 INFO L93 Difference]: Finished difference Result 27725 states and 83055 transitions. [2022-09-16 11:13:22,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:13:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 15.421052631578947) internal successors, (293), 20 states have internal predecessors, (293), 0 states have call successors, (0), 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 133 [2022-09-16 11:13:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:22,962 INFO L225 Difference]: With dead ends: 27725 [2022-09-16 11:13:22,963 INFO L226 Difference]: Without dead ends: 27725 [2022-09-16 11:13:22,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=620, Unknown=0, NotChecked=0, Total=812 [2022-09-16 11:13:22,963 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 523 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:22,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1563 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 164 Unchecked, 0.1s Time] [2022-09-16 11:13:22,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27725 states. [2022-09-16 11:13:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27725 to 26263. [2022-09-16 11:13:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26263 states, 26259 states have (on average 3.0318747857877297) internal successors, (79614), 26262 states have internal predecessors, (79614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:23,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26263 states to 26263 states and 79614 transitions. [2022-09-16 11:13:23,769 INFO L78 Accepts]: Start accepts. Automaton has 26263 states and 79614 transitions. Word has length 133 [2022-09-16 11:13:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:23,769 INFO L495 AbstractCegarLoop]: Abstraction has 26263 states and 79614 transitions. [2022-09-16 11:13:23,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 15.421052631578947) internal successors, (293), 20 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:23,769 INFO L276 IsEmpty]: Start isEmpty. Operand 26263 states and 79614 transitions. [2022-09-16 11:13:23,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 11:13:23,774 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:23,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:23,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:23,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:23,988 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:13:23,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:23,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1653852127, now seen corresponding path program 6 times [2022-09-16 11:13:23,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:23,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465649584] [2022-09-16 11:13:23,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:23,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:25,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465649584] [2022-09-16 11:13:25,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465649584] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:25,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951615466] [2022-09-16 11:13:25,437 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:13:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:25,439 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:25,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 11:13:25,628 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-09-16 11:13:25,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:25,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 75 conjunts are in the unsatisfiable core [2022-09-16 11:13:25,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:25,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:13:25,658 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:13:25,659 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 11:13:25,847 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:13:25,847 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 11:13:26,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:13:26,410 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:13:26,467 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:13:27,209 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:27,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:28,643 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:28,644 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 124 treesize of output 88 [2022-09-16 11:13:28,660 INFO L356 Elim1Store]: treesize reduction 17, result has 67.9 percent of original size [2022-09-16 11:13:28,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 270 treesize of output 269 [2022-09-16 11:13:28,679 INFO L356 Elim1Store]: treesize reduction 24, result has 54.7 percent of original size [2022-09-16 11:13:28,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 206 [2022-09-16 11:13:28,695 INFO L356 Elim1Store]: treesize reduction 24, result has 54.7 percent of original size [2022-09-16 11:13:28,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 153 [2022-09-16 11:13:30,112 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:30,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951615466] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:30,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:30,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 29, 27] total 85 [2022-09-16 11:13:30,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324550366] [2022-09-16 11:13:30,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:30,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2022-09-16 11:13:30,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:30,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2022-09-16 11:13:30,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=785, Invalid=6474, Unknown=51, NotChecked=0, Total=7310 [2022-09-16 11:13:30,115 INFO L87 Difference]: Start difference. First operand 26263 states and 79614 transitions. Second operand has 86 states, 85 states have (on average 4.364705882352941) internal successors, (371), 86 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:19,514 INFO L93 Difference]: Finished difference Result 132112 states and 388898 transitions. [2022-09-16 11:14:19,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 301 states. [2022-09-16 11:14:19,515 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 4.364705882352941) internal successors, (371), 86 states have internal predecessors, (371), 0 states have call successors, (0), 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 133 [2022-09-16 11:14:19,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:20,349 INFO L225 Difference]: With dead ends: 132112 [2022-09-16 11:14:20,349 INFO L226 Difference]: Without dead ends: 132052 [2022-09-16 11:14:20,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 382 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54170 ImplicationChecksByTransitivity, 45.5s TimeCoverageRelationStatistics Valid=17738, Invalid=129283, Unknown=51, NotChecked=0, Total=147072 [2022-09-16 11:14:20,368 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 7943 mSDsluCounter, 18089 mSDsCounter, 0 mSdLazyCounter, 7696 mSolverCounterSat, 835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7943 SdHoareTripleChecker+Valid, 18400 SdHoareTripleChecker+Invalid, 12578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 7696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4047 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:20,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7943 Valid, 18400 Invalid, 12578 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [835 Valid, 7696 Invalid, 0 Unknown, 4047 Unchecked, 4.1s Time] [2022-09-16 11:14:20,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132052 states. [2022-09-16 11:14:22,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132052 to 53938. [2022-09-16 11:14:22,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53938 states, 53934 states have (on average 3.081822227166537) internal successors, (166215), 53937 states have internal predecessors, (166215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53938 states to 53938 states and 166215 transitions. [2022-09-16 11:14:22,602 INFO L78 Accepts]: Start accepts. Automaton has 53938 states and 166215 transitions. Word has length 133 [2022-09-16 11:14:22,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:22,604 INFO L495 AbstractCegarLoop]: Abstraction has 53938 states and 166215 transitions. [2022-09-16 11:14:22,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 4.364705882352941) internal successors, (371), 86 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:22,604 INFO L276 IsEmpty]: Start isEmpty. Operand 53938 states and 166215 transitions. [2022-09-16 11:14:22,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 11:14:22,610 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:22,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:22,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:22,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:22,823 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:14:22,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:22,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1653852128, now seen corresponding path program 4 times [2022-09-16 11:14:22,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:22,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145142422] [2022-09-16 11:14:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:14:22,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:22,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145142422] [2022-09-16 11:14:22,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145142422] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:22,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163760487] [2022-09-16 11:14:22,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:14:22,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:22,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:22,925 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:22,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-16 11:14:23,017 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:14:23,017 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:23,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 32 conjunts are in the unsatisfiable core [2022-09-16 11:14:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:14:23,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:23,436 INFO L356 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-09-16 11:14:23,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-09-16 11:14:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:14:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163760487] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:23,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:23,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 6] total 13 [2022-09-16 11:14:23,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532430738] [2022-09-16 11:14:23,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:23,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 11:14:23,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:23,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 11:14:23,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:14:23,635 INFO L87 Difference]: Start difference. First operand 53938 states and 166215 transitions. Second operand has 14 states, 13 states have (on average 10.923076923076923) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:24,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:24,343 INFO L93 Difference]: Finished difference Result 70900 states and 213813 transitions. [2022-09-16 11:14:24,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:14:24,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 10.923076923076923) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 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 133 [2022-09-16 11:14:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:24,591 INFO L225 Difference]: With dead ends: 70900 [2022-09-16 11:14:24,591 INFO L226 Difference]: Without dead ends: 70780 [2022-09-16 11:14:24,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 256 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:14:24,591 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 190 mSDsluCounter, 1987 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:24,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 2156 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:14:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70780 states. [2022-09-16 11:14:26,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70780 to 65095. [2022-09-16 11:14:26,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65095 states, 65091 states have (on average 3.043078152125486) internal successors, (198077), 65094 states have internal predecessors, (198077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:26,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65095 states to 65095 states and 198077 transitions. [2022-09-16 11:14:26,628 INFO L78 Accepts]: Start accepts. Automaton has 65095 states and 198077 transitions. Word has length 133 [2022-09-16 11:14:26,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:26,628 INFO L495 AbstractCegarLoop]: Abstraction has 65095 states and 198077 transitions. [2022-09-16 11:14:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 10.923076923076923) internal successors, (142), 14 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:26,628 INFO L276 IsEmpty]: Start isEmpty. Operand 65095 states and 198077 transitions. [2022-09-16 11:14:26,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 11:14:26,634 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:26,635 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:26,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:26,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-09-16 11:14:26,852 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:14:26,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:26,852 INFO L85 PathProgramCache]: Analyzing trace with hash 890599664, now seen corresponding path program 5 times [2022-09-16 11:14:26,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804550204] [2022-09-16 11:14:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:26,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:14:26,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:26,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804550204] [2022-09-16 11:14:26,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804550204] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:26,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067290652] [2022-09-16 11:14:26,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:14:26,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:26,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:26,986 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:26,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-16 11:14:27,084 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:14:27,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:27,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:14:27,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:28,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:28,065 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:14:28,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 23 [2022-09-16 11:14:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 9 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:29,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067290652] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:29,457 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:29,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 23, 23] total 47 [2022-09-16 11:14:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314943492] [2022-09-16 11:14:29,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-09-16 11:14:29,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-09-16 11:14:29,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=1946, Unknown=0, NotChecked=0, Total=2256 [2022-09-16 11:14:29,458 INFO L87 Difference]: Start difference. First operand 65095 states and 198077 transitions. Second operand has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 48 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:35,201 INFO L93 Difference]: Finished difference Result 149115 states and 448053 transitions. [2022-09-16 11:14:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-09-16 11:14:35,202 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 48 states have internal predecessors, (320), 0 states have call successors, (0), 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 133 [2022-09-16 11:14:35,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:35,983 INFO L225 Difference]: With dead ends: 149115 [2022-09-16 11:14:35,983 INFO L226 Difference]: Without dead ends: 148539 [2022-09-16 11:14:35,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 224 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9976 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3455, Invalid=23935, Unknown=0, NotChecked=0, Total=27390 [2022-09-16 11:14:35,985 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 2603 mSDsluCounter, 6920 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2603 SdHoareTripleChecker+Valid, 7153 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:35,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2603 Valid, 7153 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 2525 Invalid, 0 Unknown, 261 Unchecked, 1.1s Time] [2022-09-16 11:14:36,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148539 states. [2022-09-16 11:14:39,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148539 to 124690. [2022-09-16 11:14:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124690 states, 124686 states have (on average 3.0632388560062878) internal successors, (381943), 124689 states have internal predecessors, (381943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124690 states to 124690 states and 381943 transitions. [2022-09-16 11:14:40,170 INFO L78 Accepts]: Start accepts. Automaton has 124690 states and 381943 transitions. Word has length 133 [2022-09-16 11:14:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:40,171 INFO L495 AbstractCegarLoop]: Abstraction has 124690 states and 381943 transitions. [2022-09-16 11:14:40,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.808510638297872) internal successors, (320), 48 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 124690 states and 381943 transitions. [2022-09-16 11:14:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-09-16 11:14:40,177 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:40,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:14:40,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-09-16 11:14:40,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:40,397 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:14:40,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:40,397 INFO L85 PathProgramCache]: Analyzing trace with hash -513155625, now seen corresponding path program 7 times [2022-09-16 11:14:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:40,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417312410] [2022-09-16 11:14:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:41,446 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:41,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417312410] [2022-09-16 11:14:41,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417312410] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:41,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111221993] [2022-09-16 11:14:41,446 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:14:41,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:41,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:41,447 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:41,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-16 11:14:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:41,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 56 conjunts are in the unsatisfiable core [2022-09-16 11:14:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:42,325 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 1 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:42,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:42,732 INFO L356 Elim1Store]: treesize reduction 42, result has 65.3 percent of original size [2022-09-16 11:14:42,735 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 100 [2022-09-16 11:14:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:43,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111221993] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:43,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:43,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 18, 18] total 61 [2022-09-16 11:14:43,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276322132] [2022-09-16 11:14:43,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:43,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-09-16 11:14:43,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:43,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-09-16 11:14:43,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=550, Invalid=3232, Unknown=0, NotChecked=0, Total=3782 [2022-09-16 11:14:43,500 INFO L87 Difference]: Start difference. First operand 124690 states and 381943 transitions. Second operand has 62 states, 61 states have (on average 6.180327868852459) internal successors, (377), 62 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:14:54,899 INFO L93 Difference]: Finished difference Result 318553 states and 937938 transitions. [2022-09-16 11:14:54,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-09-16 11:14:54,900 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 6.180327868852459) internal successors, (377), 62 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 133 [2022-09-16 11:14:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:14:56,558 INFO L225 Difference]: With dead ends: 318553 [2022-09-16 11:14:56,558 INFO L226 Difference]: Without dead ends: 315514 [2022-09-16 11:14:56,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13296 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5886, Invalid=29646, Unknown=0, NotChecked=0, Total=35532 [2022-09-16 11:14:56,560 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 4021 mSDsluCounter, 5707 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4021 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:14:56,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4021 Valid, 5926 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-09-16 11:14:57,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315514 states. [2022-09-16 11:15:02,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315514 to 120637. [2022-09-16 11:15:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120637 states, 120633 states have (on average 2.978057413808825) internal successors, (359252), 120636 states have internal predecessors, (359252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120637 states to 120637 states and 359252 transitions. [2022-09-16 11:15:03,011 INFO L78 Accepts]: Start accepts. Automaton has 120637 states and 359252 transitions. Word has length 133 [2022-09-16 11:15:03,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:03,011 INFO L495 AbstractCegarLoop]: Abstraction has 120637 states and 359252 transitions. [2022-09-16 11:15:03,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 6.180327868852459) internal successors, (377), 62 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:03,011 INFO L276 IsEmpty]: Start isEmpty. Operand 120637 states and 359252 transitions. [2022-09-16 11:15:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-09-16 11:15:03,018 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:03,018 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:15:03,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:03,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:03,231 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:15:03,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:03,232 INFO L85 PathProgramCache]: Analyzing trace with hash 2004469844, now seen corresponding path program 2 times [2022-09-16 11:15:03,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:03,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349025109] [2022-09-16 11:15:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:03,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:03,305 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:03,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:03,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349025109] [2022-09-16 11:15:03,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349025109] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:03,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230549356] [2022-09-16 11:15:03,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:15:03,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:03,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:03,306 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:03,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-09-16 11:15:03,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:15:03,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:03,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 62 conjunts are in the unsatisfiable core [2022-09-16 11:15:03,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:03,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:15:03,426 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-09-16 11:15:03,426 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 11:15:03,631 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:15:03,632 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 11:15:03,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:15:04,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:15:04,315 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:15:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:04,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:06,110 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:06,110 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 63 treesize of output 51 [2022-09-16 11:15:06,118 INFO L356 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-09-16 11:15:06,119 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 324 treesize of output 299 [2022-09-16 11:15:06,157 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-09-16 11:15:06,157 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 290 treesize of output 264 [2022-09-16 11:15:06,167 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-09-16 11:15:06,167 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 264 treesize of output 212 [2022-09-16 11:15:07,121 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:07,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230549356] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:07,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:07,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 29, 27] total 61 [2022-09-16 11:15:07,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793964319] [2022-09-16 11:15:07,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:07,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-09-16 11:15:07,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:07,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-09-16 11:15:07,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=3239, Unknown=53, NotChecked=0, Total=3782 [2022-09-16 11:15:07,124 INFO L87 Difference]: Start difference. First operand 120637 states and 359252 transitions. Second operand has 62 states, 61 states have (on average 5.688524590163935) internal successors, (347), 62 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:10,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:10,337 INFO L93 Difference]: Finished difference Result 171794 states and 516494 transitions. [2022-09-16 11:15:10,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-09-16 11:15:10,338 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 5.688524590163935) internal successors, (347), 62 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-09-16 11:15:10,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:11,272 INFO L225 Difference]: With dead ends: 171794 [2022-09-16 11:15:11,272 INFO L226 Difference]: Without dead ends: 171794 [2022-09-16 11:15:11,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3787 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1769, Invalid=11288, Unknown=53, NotChecked=0, Total=13110 [2022-09-16 11:15:11,273 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 1989 mSDsluCounter, 4733 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1989 SdHoareTripleChecker+Valid, 4854 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1767 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:11,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1989 Valid, 4854 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 587 Invalid, 0 Unknown, 1767 Unchecked, 0.2s Time] [2022-09-16 11:15:11,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171794 states. [2022-09-16 11:15:14,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171794 to 128932. [2022-09-16 11:15:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128932 states, 128928 states have (on average 2.9882647679324896) internal successors, (385271), 128931 states have internal predecessors, (385271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:15,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128932 states to 128932 states and 385271 transitions. [2022-09-16 11:15:15,702 INFO L78 Accepts]: Start accepts. Automaton has 128932 states and 385271 transitions. Word has length 136 [2022-09-16 11:15:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:15,702 INFO L495 AbstractCegarLoop]: Abstraction has 128932 states and 385271 transitions. [2022-09-16 11:15:15,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 5.688524590163935) internal successors, (347), 62 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 128932 states and 385271 transitions. [2022-09-16 11:15:15,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-09-16 11:15:15,710 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:15,710 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:15:15,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-09-16 11:15:15,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:15,927 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:15:15,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:15,928 INFO L85 PathProgramCache]: Analyzing trace with hash -531355026, now seen corresponding path program 8 times [2022-09-16 11:15:15,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:15,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658463915] [2022-09-16 11:15:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:15,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:16,013 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:16,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:16,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658463915] [2022-09-16 11:15:16,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658463915] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:16,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711509547] [2022-09-16 11:15:16,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:15:16,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:16,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:16,015 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:16,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-16 11:15:16,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:15:16,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:16,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:15:16,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:16,229 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 29 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:16,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 9 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:16,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711509547] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:16,560 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:16,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 8] total 13 [2022-09-16 11:15:16,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394331496] [2022-09-16 11:15:16,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:16,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-09-16 11:15:16,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-09-16 11:15:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:15:16,561 INFO L87 Difference]: Start difference. First operand 128932 states and 385271 transitions. Second operand has 14 states, 13 states have (on average 16.46153846153846) internal successors, (214), 14 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:18,332 INFO L93 Difference]: Finished difference Result 198148 states and 596949 transitions. [2022-09-16 11:15:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:15:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 16.46153846153846) internal successors, (214), 14 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-09-16 11:15:18,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:19,110 INFO L225 Difference]: With dead ends: 198148 [2022-09-16 11:15:19,110 INFO L226 Difference]: Without dead ends: 197653 [2022-09-16 11:15:19,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:15:19,113 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 486 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:19,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 392 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:15:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197653 states. [2022-09-16 11:15:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197653 to 175456. [2022-09-16 11:15:23,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175456 states, 175452 states have (on average 3.0238925746073) internal successors, (530548), 175455 states have internal predecessors, (530548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:25,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175456 states to 175456 states and 530548 transitions. [2022-09-16 11:15:25,598 INFO L78 Accepts]: Start accepts. Automaton has 175456 states and 530548 transitions. Word has length 136 [2022-09-16 11:15:25,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:25,599 INFO L495 AbstractCegarLoop]: Abstraction has 175456 states and 530548 transitions. [2022-09-16 11:15:25,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 16.46153846153846) internal successors, (214), 14 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 175456 states and 530548 transitions. [2022-09-16 11:15:25,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:15:25,609 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:25,609 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:15:25,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-09-16 11:15:25,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-09-16 11:15:25,813 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:15:25,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:25,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1081957111, now seen corresponding path program 3 times [2022-09-16 11:15:25,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:25,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250329550] [2022-09-16 11:15:25,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:25,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:25,988 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:25,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250329550] [2022-09-16 11:15:25,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250329550] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:25,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372825940] [2022-09-16 11:15:25,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:15:25,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:25,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:25,989 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:26,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-16 11:15:26,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-09-16 11:15:26,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:26,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:15:26,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:26,735 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 42 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:26,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:27,341 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:15:27,341 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2022-09-16 11:15:27,681 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 3 proven. 49 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:27,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372825940] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:27,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:27,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2022-09-16 11:15:27,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240920168] [2022-09-16 11:15:27,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:27,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-09-16 11:15:27,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:27,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-09-16 11:15:27,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-09-16 11:15:27,686 INFO L87 Difference]: Start difference. First operand 175456 states and 530548 transitions. Second operand has 20 states, 19 states have (on average 16.68421052631579) internal successors, (317), 20 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:29,086 INFO L93 Difference]: Finished difference Result 182488 states and 549427 transitions. [2022-09-16 11:15:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-09-16 11:15:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 16.68421052631579) internal successors, (317), 20 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-09-16 11:15:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:30,109 INFO L225 Difference]: With dead ends: 182488 [2022-09-16 11:15:30,110 INFO L226 Difference]: Without dead ends: 182482 [2022-09-16 11:15:30,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2022-09-16 11:15:30,111 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 478 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1520 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:30,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [478 Valid, 1520 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 162 Unchecked, 0.0s Time] [2022-09-16 11:15:30,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182482 states. [2022-09-16 11:15:33,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182482 to 175855. [2022-09-16 11:15:34,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175855 states, 175851 states have (on average 3.023377745932636) internal successors, (531664), 175854 states have internal predecessors, (531664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175855 states to 175855 states and 531664 transitions. [2022-09-16 11:15:35,177 INFO L78 Accepts]: Start accepts. Automaton has 175855 states and 531664 transitions. Word has length 141 [2022-09-16 11:15:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:15:35,178 INFO L495 AbstractCegarLoop]: Abstraction has 175855 states and 531664 transitions. [2022-09-16 11:15:35,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 16.68421052631579) internal successors, (317), 20 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 175855 states and 531664 transitions. [2022-09-16 11:15:35,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:15:35,188 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:15:35,188 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:15:35,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-09-16 11:15:35,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-09-16 11:15:35,405 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:15:35,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:15:35,406 INFO L85 PathProgramCache]: Analyzing trace with hash -728914993, now seen corresponding path program 4 times [2022-09-16 11:15:35,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:15:35,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708810824] [2022-09-16 11:15:35,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:15:35,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:15:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:15:35,555 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-09-16 11:15:35,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:15:35,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708810824] [2022-09-16 11:15:35,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708810824] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:15:35,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988064290] [2022-09-16 11:15:35,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:15:35,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:15:35,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:15:35,557 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:15:35,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-16 11:15:35,656 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:15:35,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:15:35,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 65 conjunts are in the unsatisfiable core [2022-09-16 11:15:35,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:15:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:37,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:15:37,456 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:15:37,457 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 75 treesize of output 143 [2022-09-16 11:15:38,475 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 10 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:15:38,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988064290] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:15:38,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:15:38,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 26, 21] total 52 [2022-09-16 11:15:38,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387425064] [2022-09-16 11:15:38,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:15:38,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 11:15:38,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:15:38,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 11:15:38,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=2186, Unknown=0, NotChecked=0, Total=2756 [2022-09-16 11:15:38,477 INFO L87 Difference]: Start difference. First operand 175855 states and 531664 transitions. Second operand has 53 states, 52 states have (on average 7.365384615384615) internal successors, (383), 53 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:15:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:15:50,003 INFO L93 Difference]: Finished difference Result 451647 states and 1304676 transitions. [2022-09-16 11:15:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2022-09-16 11:15:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 7.365384615384615) internal successors, (383), 53 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-09-16 11:15:50,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:15:52,422 INFO L225 Difference]: With dead ends: 451647 [2022-09-16 11:15:52,422 INFO L226 Difference]: Without dead ends: 448872 [2022-09-16 11:15:52,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21160 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=5167, Invalid=47503, Unknown=0, NotChecked=0, Total=52670 [2022-09-16 11:15:52,424 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 7947 mSDsluCounter, 8764 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 811 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7947 SdHoareTripleChecker+Valid, 9157 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 811 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-09-16 11:15:52,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7947 Valid, 9157 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [811 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-09-16 11:15:53,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448872 states. [2022-09-16 11:16:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448872 to 330574. [2022-09-16 11:16:01,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330574 states, 330570 states have (on average 2.930126750763832) internal successors, (968612), 330573 states have internal predecessors, (968612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330574 states to 330574 states and 968612 transitions. [2022-09-16 11:16:04,000 INFO L78 Accepts]: Start accepts. Automaton has 330574 states and 968612 transitions. Word has length 141 [2022-09-16 11:16:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:04,001 INFO L495 AbstractCegarLoop]: Abstraction has 330574 states and 968612 transitions. [2022-09-16 11:16:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 7.365384615384615) internal successors, (383), 53 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 330574 states and 968612 transitions. [2022-09-16 11:16:04,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-09-16 11:16:04,013 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:04,013 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:04,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:04,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-16 11:16:04,219 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:16:04,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1299825249, now seen corresponding path program 9 times [2022-09-16 11:16:04,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:04,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729476517] [2022-09-16 11:16:04,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:04,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:04,403 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:04,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:04,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729476517] [2022-09-16 11:16:04,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729476517] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:04,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275799031] [2022-09-16 11:16:04,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:16:04,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:04,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:04,406 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:04,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-09-16 11:16:04,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-16 11:16:04,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:04,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 31 conjunts are in the unsatisfiable core [2022-09-16 11:16:04,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:05,147 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:05,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:05,276 INFO L356 Elim1Store]: treesize reduction 24, result has 56.4 percent of original size [2022-09-16 11:16:05,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 63 treesize of output 49 [2022-09-16 11:16:05,712 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:05,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275799031] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:05,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:05,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-09-16 11:16:05,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443729647] [2022-09-16 11:16:05,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:05,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:16:05,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:05,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:16:05,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:16:05,713 INFO L87 Difference]: Start difference. First operand 330574 states and 968612 transitions. Second operand has 18 states, 17 states have (on average 13.235294117647058) internal successors, (225), 18 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:09,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:09,490 INFO L93 Difference]: Finished difference Result 354085 states and 1031974 transitions. [2022-09-16 11:16:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-09-16 11:16:09,491 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 13.235294117647058) internal successors, (225), 18 states have internal predecessors, (225), 0 states have call successors, (0), 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 142 [2022-09-16 11:16:09,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:11,477 INFO L225 Difference]: With dead ends: 354085 [2022-09-16 11:16:11,477 INFO L226 Difference]: Without dead ends: 353953 [2022-09-16 11:16:11,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:16:11,478 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 257 mSDsluCounter, 1930 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:11,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 2115 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 269 Invalid, 0 Unknown, 93 Unchecked, 0.1s Time] [2022-09-16 11:16:12,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353953 states. [2022-09-16 11:16:19,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353953 to 339763. [2022-09-16 11:16:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339763 states, 339759 states have (on average 2.9285022618974037) internal successors, (994985), 339762 states have internal predecessors, (994985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339763 states to 339763 states and 994985 transitions. [2022-09-16 11:16:22,367 INFO L78 Accepts]: Start accepts. Automaton has 339763 states and 994985 transitions. Word has length 142 [2022-09-16 11:16:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:22,367 INFO L495 AbstractCegarLoop]: Abstraction has 339763 states and 994985 transitions. [2022-09-16 11:16:22,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 13.235294117647058) internal successors, (225), 18 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:22,368 INFO L276 IsEmpty]: Start isEmpty. Operand 339763 states and 994985 transitions. [2022-09-16 11:16:22,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-09-16 11:16:22,380 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:22,380 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:22,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:22,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:22,598 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:16:22,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:22,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1734599583, now seen corresponding path program 10 times [2022-09-16 11:16:22,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:22,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033280924] [2022-09-16 11:16:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:22,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:22,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033280924] [2022-09-16 11:16:22,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033280924] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:22,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768871746] [2022-09-16 11:16:22,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:16:22,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:22,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:22,697 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:22,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-09-16 11:16:22,804 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:16:22,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:16:22,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 40 conjunts are in the unsatisfiable core [2022-09-16 11:16:22,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:23,281 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 1 proven. 62 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-09-16 11:16:23,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:23,496 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:16:23,496 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 74 treesize of output 142 [2022-09-16 11:16:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:16:23,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768871746] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:23,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:23,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 23 [2022-09-16 11:16:23,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461684441] [2022-09-16 11:16:23,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:23,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-09-16 11:16:23,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:23,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-09-16 11:16:23,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2022-09-16 11:16:23,706 INFO L87 Difference]: Start difference. First operand 339763 states and 994985 transitions. Second operand has 24 states, 23 states have (on average 14.391304347826088) internal successors, (331), 24 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:28,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:16:28,724 INFO L93 Difference]: Finished difference Result 433032 states and 1259785 transitions. [2022-09-16 11:16:28,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-09-16 11:16:28,725 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 14.391304347826088) internal successors, (331), 24 states have internal predecessors, (331), 0 states have call successors, (0), 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 142 [2022-09-16 11:16:28,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:16:31,005 INFO L225 Difference]: With dead ends: 433032 [2022-09-16 11:16:31,005 INFO L226 Difference]: Without dead ends: 432912 [2022-09-16 11:16:31,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 266 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1166 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=702, Invalid=2720, Unknown=0, NotChecked=0, Total=3422 [2022-09-16 11:16:31,006 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 1297 mSDsluCounter, 2126 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1297 SdHoareTripleChecker+Valid, 2300 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:16:31,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1297 Valid, 2300 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:16:31,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432912 states. [2022-09-16 11:16:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432912 to 349348. [2022-09-16 11:16:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349348 states, 349344 states have (on average 2.927667284968398) internal successors, (1022763), 349347 states have internal predecessors, (1022763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:43,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349348 states to 349348 states and 1022763 transitions. [2022-09-16 11:16:43,677 INFO L78 Accepts]: Start accepts. Automaton has 349348 states and 1022763 transitions. Word has length 142 [2022-09-16 11:16:43,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:16:43,677 INFO L495 AbstractCegarLoop]: Abstraction has 349348 states and 1022763 transitions. [2022-09-16 11:16:43,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 14.391304347826088) internal successors, (331), 24 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:16:43,677 INFO L276 IsEmpty]: Start isEmpty. Operand 349348 states and 1022763 transitions. [2022-09-16 11:16:43,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-09-16 11:16:43,696 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:16:43,697 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:16:43,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-09-16 11:16:43,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:43,915 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:16:43,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:16:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -683472225, now seen corresponding path program 1 times [2022-09-16 11:16:43,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:16:43,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595372154] [2022-09-16 11:16:43,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:43,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:16:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:16:46,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595372154] [2022-09-16 11:16:46,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595372154] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:16:46,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165617400] [2022-09-16 11:16:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:16:46,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:16:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:16:46,116 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:16:46,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-09-16 11:16:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:16:46,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 66 conjunts are in the unsatisfiable core [2022-09-16 11:16:46,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:16:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:47,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:16:48,132 INFO L356 Elim1Store]: treesize reduction 48, result has 60.3 percent of original size [2022-09-16 11:16:48,132 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 97 treesize of output 99 [2022-09-16 11:16:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:16:49,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165617400] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:16:49,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:16:49,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20, 19] total 67 [2022-09-16 11:16:49,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732227797] [2022-09-16 11:16:49,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:16:49,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-09-16 11:16:49,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:16:49,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-09-16 11:16:49,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=520, Invalid=4036, Unknown=0, NotChecked=0, Total=4556 [2022-09-16 11:16:49,230 INFO L87 Difference]: Start difference. First operand 349348 states and 1022763 transitions. Second operand has 68 states, 67 states have (on average 5.940298507462686) internal successors, (398), 68 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:10,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:10,621 INFO L93 Difference]: Finished difference Result 416616 states and 1210247 transitions. [2022-09-16 11:17:10,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-09-16 11:17:10,622 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 5.940298507462686) internal successors, (398), 68 states have internal predecessors, (398), 0 states have call successors, (0), 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 145 [2022-09-16 11:17:10,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:12,322 INFO L225 Difference]: With dead ends: 416616 [2022-09-16 11:17:12,322 INFO L226 Difference]: Without dead ends: 396765 [2022-09-16 11:17:12,325 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24446 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=8001, Invalid=60905, Unknown=0, NotChecked=0, Total=68906 [2022-09-16 11:17:12,326 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 4141 mSDsluCounter, 19115 mSDsCounter, 0 mSdLazyCounter, 9681 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4141 SdHoareTripleChecker+Valid, 19717 SdHoareTripleChecker+Invalid, 10009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 9681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:12,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4141 Valid, 19717 Invalid, 10009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 9681 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-09-16 11:17:13,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396765 states. [2022-09-16 11:17:22,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396765 to 334944. [2022-09-16 11:17:23,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334944 states, 334940 states have (on average 2.955436794649788) internal successors, (989894), 334943 states have internal predecessors, (989894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:26,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334944 states to 334944 states and 989894 transitions. [2022-09-16 11:17:26,750 INFO L78 Accepts]: Start accepts. Automaton has 334944 states and 989894 transitions. Word has length 145 [2022-09-16 11:17:26,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:26,751 INFO L495 AbstractCegarLoop]: Abstraction has 334944 states and 989894 transitions. [2022-09-16 11:17:26,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 5.940298507462686) internal successors, (398), 68 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:26,751 INFO L276 IsEmpty]: Start isEmpty. Operand 334944 states and 989894 transitions. [2022-09-16 11:17:26,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:17:26,773 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:26,774 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:17:26,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-09-16 11:17:26,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-09-16 11:17:26,988 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:17:26,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 64779448, now seen corresponding path program 11 times [2022-09-16 11:17:26,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:26,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740704588] [2022-09-16 11:17:26,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:26,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 38 proven. 60 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-16 11:17:27,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:27,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740704588] [2022-09-16 11:17:27,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740704588] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:27,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759660978] [2022-09-16 11:17:27,270 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:17:27,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:27,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:27,280 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:27,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-09-16 11:17:27,481 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-09-16 11:17:27,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:27,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 24 conjunts are in the unsatisfiable core [2022-09-16 11:17:27,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:28,178 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 18 proven. 51 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-09-16 11:17:28,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-09-16 11:17:29,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759660978] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:29,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:29,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 54 [2022-09-16 11:17:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851593868] [2022-09-16 11:17:29,269 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:29,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-09-16 11:17:29,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-09-16 11:17:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=2538, Unknown=0, NotChecked=0, Total=2862 [2022-09-16 11:17:29,270 INFO L87 Difference]: Start difference. First operand 334944 states and 989894 transitions. Second operand has 54 states, 54 states have (on average 6.2592592592592595) internal successors, (338), 54 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:32,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:32,930 INFO L93 Difference]: Finished difference Result 57321 states and 172751 transitions. [2022-09-16 11:17:32,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-09-16 11:17:32,930 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 6.2592592592592595) internal successors, (338), 54 states have internal predecessors, (338), 0 states have call successors, (0), 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 147 [2022-09-16 11:17:32,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:33,105 INFO L225 Difference]: With dead ends: 57321 [2022-09-16 11:17:33,106 INFO L226 Difference]: Without dead ends: 53328 [2022-09-16 11:17:33,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3631 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2271, Invalid=11069, Unknown=0, NotChecked=0, Total=13340 [2022-09-16 11:17:33,107 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 2237 mSDsluCounter, 4372 mSDsCounter, 0 mSdLazyCounter, 1382 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2237 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 1705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:33,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2237 Valid, 4626 Invalid, 1705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1382 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-09-16 11:17:33,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53328 states. [2022-09-16 11:17:34,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53328 to 47786. [2022-09-16 11:17:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47786 states, 47782 states have (on average 3.0559415679544597) internal successors, (146019), 47785 states have internal predecessors, (146019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:34,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47786 states to 47786 states and 146019 transitions. [2022-09-16 11:17:34,642 INFO L78 Accepts]: Start accepts. Automaton has 47786 states and 146019 transitions. Word has length 147 [2022-09-16 11:17:34,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:34,642 INFO L495 AbstractCegarLoop]: Abstraction has 47786 states and 146019 transitions. [2022-09-16 11:17:34,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 6.2592592592592595) internal successors, (338), 54 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:34,642 INFO L276 IsEmpty]: Start isEmpty. Operand 47786 states and 146019 transitions. [2022-09-16 11:17:34,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:17:34,652 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:34,653 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:17:34,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-09-16 11:17:34,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-09-16 11:17:34,868 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:17:34,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:34,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1232966808, now seen corresponding path program 12 times [2022-09-16 11:17:34,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:34,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968692998] [2022-09-16 11:17:34,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:34,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:35,014 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:17:35,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968692998] [2022-09-16 11:17:35,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968692998] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:35,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416625204] [2022-09-16 11:17:35,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:17:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:35,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:35,016 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:35,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-09-16 11:17:35,253 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-09-16 11:17:35,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:35,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 21 conjunts are in the unsatisfiable core [2022-09-16 11:17:35,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:35,516 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 18 proven. 59 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:17:35,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:35,671 INFO L356 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-09-16 11:17:35,671 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2022-09-16 11:17:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 9 proven. 68 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:17:35,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416625204] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:35,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:35,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-09-16 11:17:35,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604629548] [2022-09-16 11:17:35,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:35,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-09-16 11:17:35,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:35,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-09-16 11:17:35,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:17:35,976 INFO L87 Difference]: Start difference. First operand 47786 states and 146019 transitions. Second operand has 26 states, 25 states have (on average 13.4) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:17:37,150 INFO L93 Difference]: Finished difference Result 60501 states and 181252 transitions. [2022-09-16 11:17:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-09-16 11:17:37,151 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 13.4) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 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 156 [2022-09-16 11:17:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:17:37,346 INFO L225 Difference]: With dead ends: 60501 [2022-09-16 11:17:37,347 INFO L226 Difference]: Without dead ends: 60501 [2022-09-16 11:17:37,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=403, Invalid=1576, Unknown=1, NotChecked=0, Total=1980 [2022-09-16 11:17:37,347 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 1014 mSDsluCounter, 2179 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 278 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:17:37,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 2382 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 278 Unchecked, 0.1s Time] [2022-09-16 11:17:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60501 states. [2022-09-16 11:17:38,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60501 to 53207. [2022-09-16 11:17:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53207 states, 53203 states have (on average 3.054169877638479) internal successors, (162491), 53206 states have internal predecessors, (162491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:38,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53207 states to 53207 states and 162491 transitions. [2022-09-16 11:17:38,846 INFO L78 Accepts]: Start accepts. Automaton has 53207 states and 162491 transitions. Word has length 156 [2022-09-16 11:17:38,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:17:38,846 INFO L495 AbstractCegarLoop]: Abstraction has 53207 states and 162491 transitions. [2022-09-16 11:17:38,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 13.4) internal successors, (335), 26 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:17:38,847 INFO L276 IsEmpty]: Start isEmpty. Operand 53207 states and 162491 transitions. [2022-09-16 11:17:38,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:17:38,858 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:17:38,858 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:17:38,880 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-09-16 11:17:39,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:39,071 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:17:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:17:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1232966807, now seen corresponding path program 6 times [2022-09-16 11:17:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:17:39,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972060872] [2022-09-16 11:17:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:17:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:17:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:17:40,244 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 10 proven. 125 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:17:40,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:17:40,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972060872] [2022-09-16 11:17:40,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972060872] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:17:40,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859430176] [2022-09-16 11:17:40,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-09-16 11:17:40,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:17:40,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:17:40,246 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:17:40,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-09-16 11:17:41,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-09-16 11:17:41,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:17:41,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 53 conjunts are in the unsatisfiable core [2022-09-16 11:17:41,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:17:42,131 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 45 proven. 61 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-09-16 11:17:42,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:17:42,918 INFO L356 Elim1Store]: treesize reduction 31, result has 52.3 percent of original size [2022-09-16 11:17:42,918 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 50 treesize of output 50 [2022-09-16 11:17:43,315 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-09-16 11:17:43,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859430176] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:17:43,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:17:43,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 21, 21] total 68 [2022-09-16 11:17:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548198136] [2022-09-16 11:17:43,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:17:43,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-09-16 11:17:43,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:17:43,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-09-16 11:17:43,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=377, Invalid=4315, Unknown=0, NotChecked=0, Total=4692 [2022-09-16 11:17:43,317 INFO L87 Difference]: Start difference. First operand 53207 states and 162491 transitions. Second operand has 69 states, 68 states have (on average 5.132352941176471) internal successors, (349), 69 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:18:29,412 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 134 DAG size of output: 95 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-16 11:19:23,317 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 132 DAG size of output: 107 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-16 11:21:43,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:21:43,229 INFO L93 Difference]: Finished difference Result 471836 states and 1402055 transitions. [2022-09-16 11:21:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1068 states. [2022-09-16 11:21:43,229 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 5.132352941176471) internal successors, (349), 69 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-09-16 11:21:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:21:46,835 INFO L225 Difference]: With dead ends: 471836 [2022-09-16 11:21:46,836 INFO L226 Difference]: Without dead ends: 471009 [2022-09-16 11:21:46,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1659 GetRequests, 453 SyntacticMatches, 80 SemanticMatches, 1126 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 582893 ImplicationChecksByTransitivity, 212.0s TimeCoverageRelationStatistics Valid=118021, Invalid=1153234, Unknown=1, NotChecked=0, Total=1271256 [2022-09-16 11:21:46,929 INFO L413 NwaCegarLoop]: 1672 mSDtfsCounter, 4778 mSDsluCounter, 41875 mSDsCounter, 0 mSdLazyCounter, 10587 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4778 SdHoareTripleChecker+Valid, 43452 SdHoareTripleChecker+Invalid, 37206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 10587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26172 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:21:46,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4778 Valid, 43452 Invalid, 37206 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [447 Valid, 10587 Invalid, 0 Unknown, 26172 Unchecked, 5.8s Time] [2022-09-16 11:21:47,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471009 states. [2022-09-16 11:22:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471009 to 300644. [2022-09-16 11:22:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300644 states, 300640 states have (on average 3.1142163384779136) internal successors, (936258), 300643 states have internal predecessors, (936258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:22:03,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300644 states to 300644 states and 936258 transitions. [2022-09-16 11:22:03,588 INFO L78 Accepts]: Start accepts. Automaton has 300644 states and 936258 transitions. Word has length 156 [2022-09-16 11:22:03,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:22:03,589 INFO L495 AbstractCegarLoop]: Abstraction has 300644 states and 936258 transitions. [2022-09-16 11:22:03,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 5.132352941176471) internal successors, (349), 69 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:22:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 300644 states and 936258 transitions. [2022-09-16 11:22:03,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:22:03,628 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:22:03,628 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:22:03,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-09-16 11:22:03,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:22:03,846 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:22:03,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:22:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1928482898, now seen corresponding path program 13 times [2022-09-16 11:22:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:22:03,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422161515] [2022-09-16 11:22:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:22:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:22:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:22:05,972 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 24 proven. 111 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:22:05,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:22:05,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422161515] [2022-09-16 11:22:05,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422161515] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:22:05,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43986089] [2022-09-16 11:22:05,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:22:05,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:22:05,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:22:05,974 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:22:05,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-09-16 11:22:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:22:06,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 50 conjunts are in the unsatisfiable core [2022-09-16 11:22:06,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:22:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:22:06,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:22:07,154 INFO L356 Elim1Store]: treesize reduction 5, result has 64.3 percent of original size [2022-09-16 11:22:07,154 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-09-16 11:22:08,658 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:22:08,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43986089] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:22:08,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:22:08,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 21, 21] total 74 [2022-09-16 11:22:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544292640] [2022-09-16 11:22:08,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:22:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-09-16 11:22:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:22:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-09-16 11:22:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=5026, Unknown=0, NotChecked=0, Total=5550 [2022-09-16 11:22:08,660 INFO L87 Difference]: Start difference. First operand 300644 states and 936258 transitions. Second operand has 75 states, 74 states have (on average 5.824324324324325) internal successors, (431), 75 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:22:45,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:22:45,671 INFO L93 Difference]: Finished difference Result 812838 states and 2435899 transitions. [2022-09-16 11:22:45,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 305 states. [2022-09-16 11:22:45,671 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 74 states have (on average 5.824324324324325) internal successors, (431), 75 states have internal predecessors, (431), 0 states have call successors, (0), 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 156 [2022-09-16 11:22:45,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:22:52,040 INFO L225 Difference]: With dead ends: 812838 [2022-09-16 11:22:52,040 INFO L226 Difference]: Without dead ends: 804351 [2022-09-16 11:22:52,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 368 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53157 ImplicationChecksByTransitivity, 24.2s TimeCoverageRelationStatistics Valid=16097, Invalid=120433, Unknown=0, NotChecked=0, Total=136530 [2022-09-16 11:22:52,047 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 8291 mSDsluCounter, 24907 mSDsCounter, 0 mSdLazyCounter, 11305 mSolverCounterSat, 854 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8291 SdHoareTripleChecker+Valid, 25390 SdHoareTripleChecker+Invalid, 12159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 854 IncrementalHoareTripleChecker+Valid, 11305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:22:52,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8291 Valid, 25390 Invalid, 12159 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [854 Valid, 11305 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-09-16 11:22:53,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804351 states. [2022-09-16 11:23:13,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804351 to 534713. [2022-09-16 11:23:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534713 states, 534709 states have (on average 3.066479150341588) internal successors, (1639674), 534712 states have internal predecessors, (1639674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:23:20,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534713 states to 534713 states and 1639674 transitions. [2022-09-16 11:23:20,055 INFO L78 Accepts]: Start accepts. Automaton has 534713 states and 1639674 transitions. Word has length 156 [2022-09-16 11:23:20,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:23:20,055 INFO L495 AbstractCegarLoop]: Abstraction has 534713 states and 1639674 transitions. [2022-09-16 11:23:20,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 74 states have (on average 5.824324324324325) internal successors, (431), 75 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:23:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand 534713 states and 1639674 transitions. [2022-09-16 11:23:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:23:20,069 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:23:20,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:23:20,093 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-09-16 11:23:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:23:20,287 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2022-09-16 11:23:20,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:23:20,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1928482899, now seen corresponding path program 7 times [2022-09-16 11:23:20,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:23:20,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196610805] [2022-09-16 11:23:20,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:23:20,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:23:20,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:23:22,617 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 29 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:23:22,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:23:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196610805] [2022-09-16 11:23:22,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196610805] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:23:22,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256548865] [2022-09-16 11:23:22,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-09-16 11:23:22,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:23:22,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:23:22,619 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:23:22,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-09-16 11:23:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:23:22,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 56 conjunts are in the unsatisfiable core [2022-09-16 11:23:22,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:23:23,482 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:23:23,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:23:23,895 INFO L356 Elim1Store]: treesize reduction 19, result has 66.7 percent of original size [2022-09-16 11:23:23,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 52 treesize of output 54 [2022-09-16 11:23:25,227 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:23:25,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256548865] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:23:25,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:23:25,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 21, 21] total 80 [2022-09-16 11:23:25,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368159689] [2022-09-16 11:23:25,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:23:25,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-09-16 11:23:25,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:23:25,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-09-16 11:23:25,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=874, Invalid=5606, Unknown=0, NotChecked=0, Total=6480 [2022-09-16 11:23:25,229 INFO L87 Difference]: Start difference. First operand 534713 states and 1639674 transitions. Second operand has 81 states, 80 states have (on average 5.3875) internal successors, (431), 81 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:23:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:23:51,949 INFO L93 Difference]: Finished difference Result 1209593 states and 3563534 transitions. [2022-09-16 11:23:51,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2022-09-16 11:23:51,950 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 80 states have (on average 5.3875) internal successors, (431), 81 states have internal predecessors, (431), 0 states have call successors, (0), 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 156 [2022-09-16 11:23:51,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:23:58,477 INFO L225 Difference]: With dead ends: 1209593 [2022-09-16 11:23:58,478 INFO L226 Difference]: Without dead ends: 1198088 [2022-09-16 11:23:58,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 529 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24991 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=8092, Invalid=59248, Unknown=0, NotChecked=0, Total=67340 [2022-09-16 11:23:58,481 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 5092 mSDsluCounter, 15137 mSDsCounter, 0 mSdLazyCounter, 5520 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5092 SdHoareTripleChecker+Valid, 15482 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 5520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:23:58,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5092 Valid, 15482 Invalid, 6056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 5520 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-09-16 11:24:00,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198088 states. Received shutdown request... [2022-09-16 11:24:18,076 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-16 11:24:18,076 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-09-16 11:24:19,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-09-16 11:24:19,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown