/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-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:11:43,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:11:43,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:11:43,539 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:11:43,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:11:43,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:11:43,541 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:11:43,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:11:43,544 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:11:43,544 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:11:43,550 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:11:43,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:11:43,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:11:43,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:11:43,558 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:11:43,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:11:43,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:11:43,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:11:43,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:11:43,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:11:43,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:11:43,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:11:43,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:11:43,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:11:43,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:11:43,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:11:43,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:11:43,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:11:43,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:11:43,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:11:43,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:11:43,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:11:43,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:11:43,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:11:43,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:11:43,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:11:43,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:11:43,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:11:43,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:11:43,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:11:43,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:11:43,593 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-09-16 11:11:43,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:11:43,617 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:11:43,617 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:11:43,617 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:11:43,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:11:43,618 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:11:43,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:11:43,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:11:43,618 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:11:43,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:11:43,618 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:11:43,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:11:43,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:11:43,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:11:43,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:11:43,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:11:43,621 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:11:43,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:11:43,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:11:43,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:11:43,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:11:43,886 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:11:43,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-09-16 11:11:43,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e156f6cc3/6f93b65f34334bc7a47560fb31b2d9ed/FLAG19611d5ab [2022-09-16 11:11:44,246 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:11:44,247 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-09-16 11:11:44,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e156f6cc3/6f93b65f34334bc7a47560fb31b2d9ed/FLAG19611d5ab [2022-09-16 11:11:44,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e156f6cc3/6f93b65f34334bc7a47560fb31b2d9ed [2022-09-16 11:11:44,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:11:44,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:11:44,695 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:11:44,695 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:11:44,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:11:44,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:44,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5529352e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44, skipping insertion in model container [2022-09-16 11:11:44,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:44,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:11:44,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:11:44,893 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-09-16 11:11:44,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:11:44,910 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:11:44,942 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-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2022-09-16 11:11:44,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:11:44,959 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:11:44,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44 WrapperNode [2022-09-16 11:11:44,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:11:44,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:11:44,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:11:44,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:11:44,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:44,984 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,010 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 141 [2022-09-16 11:11:45,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:11:45,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:11:45,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:11:45,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:11:45,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:11:45,034 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:11:45,035 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:11:45,035 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:11:45,036 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (1/1) ... [2022-09-16 11:11:45,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:11:45,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:45,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:11:45,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:11:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:11:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:11:45,105 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:11:45,105 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:11:45,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:11:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:11:45,106 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:11:45,106 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:11:45,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:11:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:11:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:11:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:11:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:11:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:11:45,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:11:45,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:11:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:11:45,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:11:45,110 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:11:45,227 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:11:45,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:11:45,600 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:11:45,753 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:11:45,753 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:11:45,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:11:45 BoogieIcfgContainer [2022-09-16 11:11:45,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:11:45,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:11:45,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:11:45,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:11:45,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:11:44" (1/3) ... [2022-09-16 11:11:45,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737ffd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:11:45, skipping insertion in model container [2022-09-16 11:11:45,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:11:44" (2/3) ... [2022-09-16 11:11:45,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@737ffd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:11:45, skipping insertion in model container [2022-09-16 11:11:45,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:11:45" (3/3) ... [2022-09-16 11:11:45,762 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2022-09-16 11:11:45,767 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:11:45,785 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:11:45,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-09-16 11:11:45,786 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:11:45,844 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:11:45,871 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 149 places, 146 transitions, 324 flow [2022-09-16 11:11:47,235 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 33222 states, 32598 states have (on average 5.056353150500031) internal successors, (164827), 33221 states have internal predecessors, (164827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:47,254 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:11:47,259 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;@70a5c9aa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:11:47,259 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-09-16 11:11:47,449 INFO L276 IsEmpty]: Start isEmpty. Operand has 33222 states, 32598 states have (on average 5.056353150500031) internal successors, (164827), 33221 states have internal predecessors, (164827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-09-16 11:11:47,457 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:47,458 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] [2022-09-16 11:11:47,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:11:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:47,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1875315823, now seen corresponding path program 1 times [2022-09-16 11:11:47,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:47,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838354022] [2022-09-16 11:11:47,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:47,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:47,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:47,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838354022] [2022-09-16 11:11:47,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838354022] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:47,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:11:47,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:11:47,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596827014] [2022-09-16 11:11:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:47,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:11:47,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:11:47,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:11:47,824 INFO L87 Difference]: Start difference. First operand has 33222 states, 32598 states have (on average 5.056353150500031) internal successors, (164827), 33221 states have internal predecessors, (164827), 0 states have call successors, (0), 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 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:48,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:48,712 INFO L93 Difference]: Finished difference Result 30139 states and 137828 transitions. [2022-09-16 11:11:48,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:11:48,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-09-16 11:11:48,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:49,318 INFO L225 Difference]: With dead ends: 30139 [2022-09-16 11:11:49,319 INFO L226 Difference]: Without dead ends: 29124 [2022-09-16 11:11:49,320 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 11:11:49,340 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 46 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:49,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 139 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:11:49,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29124 states. [2022-09-16 11:11:50,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29124 to 29124. [2022-09-16 11:11:50,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29124 states, 28725 states have (on average 4.6609225413402955) internal successors, (133885), 29123 states have internal predecessors, (133885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29124 states to 29124 states and 133885 transitions. [2022-09-16 11:11:51,101 INFO L78 Accepts]: Start accepts. Automaton has 29124 states and 133885 transitions. Word has length 49 [2022-09-16 11:11:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:51,102 INFO L495 AbstractCegarLoop]: Abstraction has 29124 states and 133885 transitions. [2022-09-16 11:11:51,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:51,103 INFO L276 IsEmpty]: Start isEmpty. Operand 29124 states and 133885 transitions. [2022-09-16 11:11:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-09-16 11:11:51,103 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:51,103 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] [2022-09-16 11:11:51,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:11:51,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:11:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:51,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1875315821, now seen corresponding path program 1 times [2022-09-16 11:11:51,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:51,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105272642] [2022-09-16 11:11:51,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:51,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:51,145 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 11:11:51,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:51,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105272642] [2022-09-16 11:11:51,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105272642] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:51,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:11:51,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:11:51,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558459222] [2022-09-16 11:11:51,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:51,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:11:51,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:51,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:11:51,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:11:51,148 INFO L87 Difference]: Start difference. First operand 29124 states and 133885 transitions. Second operand has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:52,050 INFO L93 Difference]: Finished difference Result 49803 states and 226863 transitions. [2022-09-16 11:11:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:11:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-09-16 11:11:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:52,648 INFO L225 Difference]: With dead ends: 49803 [2022-09-16 11:11:52,648 INFO L226 Difference]: Without dead ends: 49803 [2022-09-16 11:11:52,648 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 11:11:52,649 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 60 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:52,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 132 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:11:52,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49803 states. [2022-09-16 11:11:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49803 to 34596. [2022-09-16 11:11:54,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34596 states, 34197 states have (on average 4.852969558733222) internal successors, (165957), 34595 states have internal predecessors, (165957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34596 states to 34596 states and 165957 transitions. [2022-09-16 11:11:54,696 INFO L78 Accepts]: Start accepts. Automaton has 34596 states and 165957 transitions. Word has length 49 [2022-09-16 11:11:54,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:54,696 INFO L495 AbstractCegarLoop]: Abstraction has 34596 states and 165957 transitions. [2022-09-16 11:11:54,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 24.5) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:54,697 INFO L276 IsEmpty]: Start isEmpty. Operand 34596 states and 165957 transitions. [2022-09-16 11:11:54,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-09-16 11:11:54,698 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:54,698 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:11:54,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:11:54,699 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:11:54,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:54,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1707777111, now seen corresponding path program 1 times [2022-09-16 11:11:54,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:54,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112418377] [2022-09-16 11:11:54,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:54,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112418377] [2022-09-16 11:11:54,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112418377] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1049893872] [2022-09-16 11:11:54,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:54,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:54,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:54,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:54,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:11:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:54,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:11:54,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:54,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:54,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:55,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:55,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1049893872] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:55,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:55,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:11:55,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172143172] [2022-09-16 11:11:55,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:55,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:11:55,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:55,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:11:55,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:11:55,048 INFO L87 Difference]: Start difference. First operand 34596 states and 165957 transitions. Second operand has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:57,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:57,392 INFO L93 Difference]: Finished difference Result 121711 states and 538819 transitions. [2022-09-16 11:11:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:11:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-09-16 11:11:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:58,722 INFO L225 Difference]: With dead ends: 121711 [2022-09-16 11:11:58,723 INFO L226 Difference]: Without dead ends: 120697 [2022-09-16 11:11:58,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:11:58,724 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 425 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:58,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 310 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:11:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120697 states. [2022-09-16 11:12:03,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120697 to 93010. [2022-09-16 11:12:04,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93010 states, 92470 states have (on average 4.98115064345193) internal successors, (460607), 93009 states have internal predecessors, (460607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:05,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93010 states to 93010 states and 460607 transitions. [2022-09-16 11:12:05,198 INFO L78 Accepts]: Start accepts. Automaton has 93010 states and 460607 transitions. Word has length 51 [2022-09-16 11:12:05,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:05,200 INFO L495 AbstractCegarLoop]: Abstraction has 93010 states and 460607 transitions. [2022-09-16 11:12:05,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.166666666666668) internal successors, (127), 7 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 93010 states and 460607 transitions. [2022-09-16 11:12:05,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-09-16 11:12:05,205 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:05,205 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:05,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-16 11:12:05,421 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 11:12:05,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:12:05,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:05,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1707777112, now seen corresponding path program 1 times [2022-09-16 11:12:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:05,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149028247] [2022-09-16 11:12:05,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:05,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:05,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149028247] [2022-09-16 11:12:05,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149028247] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:05,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757944581] [2022-09-16 11:12:05,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:05,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:05,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:05,534 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 11:12:05,535 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 11:12:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:05,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:12:05,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:05,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:05,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757944581] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:05,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:05,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-09-16 11:12:05,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143175131] [2022-09-16 11:12:05,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:05,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:05,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:05,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:05,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:05,687 INFO L87 Difference]: Start difference. First operand 93010 states and 460607 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:07,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:07,888 INFO L93 Difference]: Finished difference Result 114197 states and 555627 transitions. [2022-09-16 11:12:07,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:12:07,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-09-16 11:12:07,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:09,670 INFO L225 Difference]: With dead ends: 114197 [2022-09-16 11:12:09,670 INFO L226 Difference]: Without dead ends: 114197 [2022-09-16 11:12:09,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 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 11:12:09,675 INFO L413 NwaCegarLoop]: 124 mSDtfsCounter, 105 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:09,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 209 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114197 states. [2022-09-16 11:12:12,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114197 to 75534. [2022-09-16 11:12:13,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75534 states, 75219 states have (on average 4.865938127334849) internal successors, (366011), 75533 states have internal predecessors, (366011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:14,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75534 states to 75534 states and 366011 transitions. [2022-09-16 11:12:14,169 INFO L78 Accepts]: Start accepts. Automaton has 75534 states and 366011 transitions. Word has length 51 [2022-09-16 11:12:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:14,169 INFO L495 AbstractCegarLoop]: Abstraction has 75534 states and 366011 transitions. [2022-09-16 11:12:14,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:14,170 INFO L276 IsEmpty]: Start isEmpty. Operand 75534 states and 366011 transitions. [2022-09-16 11:12:14,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-09-16 11:12:14,170 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:14,170 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:14,191 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 11:12:14,391 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 11:12:14,391 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:12:14,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:14,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1707777113, now seen corresponding path program 1 times [2022-09-16 11:12:14,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:14,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921352711] [2022-09-16 11:12:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:14,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:14,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921352711] [2022-09-16 11:12:14,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921352711] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328427432] [2022-09-16 11:12:14,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:14,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:14,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:14,472 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 11:12:14,487 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 11:12:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:14,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:12:14,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:14,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:14,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:14,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:14,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328427432] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:14,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:14,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:12:14,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987106683] [2022-09-16 11:12:14,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:14,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:12:14,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:14,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:12:14,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:12:14,696 INFO L87 Difference]: Start difference. First operand 75534 states and 366011 transitions. Second operand has 7 states, 6 states have (on average 22.5) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:18,825 INFO L93 Difference]: Finished difference Result 229934 states and 1107787 transitions. [2022-09-16 11:12:18,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:12:18,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-09-16 11:12:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:22,285 INFO L225 Difference]: With dead ends: 229934 [2022-09-16 11:12:22,285 INFO L226 Difference]: Without dead ends: 229934 [2022-09-16 11:12:22,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:12:22,286 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 515 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:22,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 330 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:12:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229934 states. [2022-09-16 11:12:30,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229934 to 130830. [2022-09-16 11:12:30,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130830 states, 130515 states have (on average 5.153698808566065) internal successors, (672635), 130829 states have internal predecessors, (672635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:32,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130830 states to 130830 states and 672635 transitions. [2022-09-16 11:12:32,065 INFO L78 Accepts]: Start accepts. Automaton has 130830 states and 672635 transitions. Word has length 51 [2022-09-16 11:12:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:32,066 INFO L495 AbstractCegarLoop]: Abstraction has 130830 states and 672635 transitions. [2022-09-16 11:12:32,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 22.5) internal successors, (135), 7 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:32,066 INFO L276 IsEmpty]: Start isEmpty. Operand 130830 states and 672635 transitions. [2022-09-16 11:12:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-09-16 11:12:32,068 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:32,068 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-09-16 11:12:32,088 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-16 11:12:32,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:32,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:12:32,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:32,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1707777114, now seen corresponding path program 1 times [2022-09-16 11:12:32,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:32,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410218583] [2022-09-16 11:12:32,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:32,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410218583] [2022-09-16 11:12:32,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410218583] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:32,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360278908] [2022-09-16 11:12:32,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:32,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:32,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:32,367 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 11:12:32,368 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 11:12:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:32,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:12:32,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:32,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:32,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:32,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360278908] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:32,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:32,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-09-16 11:12:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641230285] [2022-09-16 11:12:32,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:32,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:12:32,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:32,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:12:32,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:12:32,479 INFO L87 Difference]: Start difference. First operand 130830 states and 672635 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:35,828 INFO L93 Difference]: Finished difference Result 148759 states and 718345 transitions. [2022-09-16 11:12:35,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:12:35,840 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-09-16 11:12:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:37,919 INFO L225 Difference]: With dead ends: 148759 [2022-09-16 11:12:37,919 INFO L226 Difference]: Without dead ends: 148759 [2022-09-16 11:12:37,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 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 11:12:37,920 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 117 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:37,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 211 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:12:38,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148759 states. [2022-09-16 11:12:43,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148759 to 124190. [2022-09-16 11:12:43,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124190 states, 123960 states have (on average 4.921676347208777) internal successors, (610091), 124189 states have internal predecessors, (610091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:45,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124190 states to 124190 states and 610091 transitions. [2022-09-16 11:12:45,198 INFO L78 Accepts]: Start accepts. Automaton has 124190 states and 610091 transitions. Word has length 51 [2022-09-16 11:12:45,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:45,199 INFO L495 AbstractCegarLoop]: Abstraction has 124190 states and 610091 transitions. [2022-09-16 11:12:45,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:45,199 INFO L276 IsEmpty]: Start isEmpty. Operand 124190 states and 610091 transitions. [2022-09-16 11:12:45,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-09-16 11:12:45,200 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:45,200 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] [2022-09-16 11:12:45,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-16 11:12:45,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:45,420 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:12:45,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:45,421 INFO L85 PathProgramCache]: Analyzing trace with hash -703055589, now seen corresponding path program 1 times [2022-09-16 11:12:45,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:45,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469422343] [2022-09-16 11:12:45,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:45,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:45,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:45,461 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 11:12:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:45,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469422343] [2022-09-16 11:12:45,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469422343] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:45,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:12:45,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:12:45,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492050967] [2022-09-16 11:12:45,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:45,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:12:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:12:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:12:45,463 INFO L87 Difference]: Start difference. First operand 124190 states and 610091 transitions. Second operand has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:49,571 INFO L93 Difference]: Finished difference Result 208253 states and 1028539 transitions. [2022-09-16 11:12:49,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:12:49,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-09-16 11:12:49,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:52,221 INFO L225 Difference]: With dead ends: 208253 [2022-09-16 11:12:52,222 INFO L226 Difference]: Without dead ends: 207983 [2022-09-16 11:12:52,222 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 11:12:52,223 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 49 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:52,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 126 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:12:52,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207983 states. [2022-09-16 11:13:00,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207983 to 156256. [2022-09-16 11:13:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156256 states, 156026 states have (on average 5.052119518541781) internal successors, (788262), 156255 states have internal predecessors, (788262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156256 states to 156256 states and 788262 transitions. [2022-09-16 11:13:02,617 INFO L78 Accepts]: Start accepts. Automaton has 156256 states and 788262 transitions. Word has length 57 [2022-09-16 11:13:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:02,617 INFO L495 AbstractCegarLoop]: Abstraction has 156256 states and 788262 transitions. [2022-09-16 11:13:02,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 28.5) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:02,618 INFO L276 IsEmpty]: Start isEmpty. Operand 156256 states and 788262 transitions. [2022-09-16 11:13:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-09-16 11:13:02,619 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:02,619 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-09-16 11:13:02,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:13:02,619 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:13:02,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1296138839, now seen corresponding path program 2 times [2022-09-16 11:13:02,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:02,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221669888] [2022-09-16 11:13:02,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:02,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:02,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:02,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:02,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221669888] [2022-09-16 11:13:02,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221669888] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:02,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992517813] [2022-09-16 11:13:02,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:13:02,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:02,700 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 11:13:02,702 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 11:13:02,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:13:02,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:02,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:13:02,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:02,854 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:02,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:02,942 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:02,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992517813] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:02,942 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:02,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-09-16 11:13:02,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870465766] [2022-09-16 11:13:02,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:02,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:13:02,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:02,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:13:02,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:13:02,944 INFO L87 Difference]: Start difference. First operand 156256 states and 788262 transitions. Second operand has 13 states, 12 states have (on average 11.583333333333334) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:17,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:17,512 INFO L93 Difference]: Finished difference Result 573316 states and 2823856 transitions. [2022-09-16 11:13:17,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-16 11:13:17,512 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 11.583333333333334) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 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 57 [2022-09-16 11:13:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:26,632 INFO L225 Difference]: With dead ends: 573316 [2022-09-16 11:13:26,632 INFO L226 Difference]: Without dead ends: 569848 [2022-09-16 11:13:26,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-09-16 11:13:26,633 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 743 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:26,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 588 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:13:27,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569848 states. [2022-09-16 11:13:54,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569848 to 317992. [2022-09-16 11:13:55,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317992 states, 317762 states have (on average 5.132520565706409) internal successors, (1630920), 317991 states have internal predecessors, (1630920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317992 states to 317992 states and 1630920 transitions. [2022-09-16 11:14:01,522 INFO L78 Accepts]: Start accepts. Automaton has 317992 states and 1630920 transitions. Word has length 57 [2022-09-16 11:14:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:14:01,523 INFO L495 AbstractCegarLoop]: Abstraction has 317992 states and 1630920 transitions. [2022-09-16 11:14:01,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 11.583333333333334) internal successors, (139), 13 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:14:01,523 INFO L276 IsEmpty]: Start isEmpty. Operand 317992 states and 1630920 transitions. [2022-09-16 11:14:01,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-09-16 11:14:01,525 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:14:01,526 INFO L195 NwaCegarLoop]: trace histogram [5, 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] [2022-09-16 11:14:01,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:14:01,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:01,744 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:14:01,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:14:01,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1296138837, now seen corresponding path program 2 times [2022-09-16 11:14:01,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:14:01,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294300234] [2022-09-16 11:14:01,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:14:01,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:14:01,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:14:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:14:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:14:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294300234] [2022-09-16 11:14:01,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294300234] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:14:01,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854808454] [2022-09-16 11:14:01,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:14:01,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:14:01,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:14:01,879 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:14:01,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:14:01,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:14:01,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:14:02,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:14:02,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:14:02,078 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-09-16 11:14:02,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:14:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-09-16 11:14:02,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854808454] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:14:02,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:14:02,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-09-16 11:14:02,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333387404] [2022-09-16 11:14:02,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:14:02,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:14:02,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:14:02,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:14:02,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:14:02,168 INFO L87 Difference]: Start difference. First operand 317992 states and 1630920 transitions. Second operand has 10 states, 9 states have (on average 11.11111111111111) internal successors, (100), 10 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)