/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:07:04,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:07:04,439 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:07:04,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:07:04,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:07:04,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:07:04,483 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:07:04,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:07:04,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:07:04,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:07:04,495 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:07:04,496 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:07:04,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:07:04,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:07:04,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:07:04,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:07:04,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:07:04,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:07:04,507 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:07:04,512 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:07:04,513 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:07:04,514 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:07:04,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:07:04,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:07:04,525 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:07:04,525 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:07:04,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:07:04,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:07:04,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:07:04,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:07:04,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:07:04,528 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:07:04,529 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:07:04,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:07:04,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:07:04,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:07:04,531 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:07:04,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:07:04,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:07:04,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:07:04,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:07:04,536 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 11:07:04,579 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:07:04,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:07:04,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:07:04,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:07:04,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:07:04,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:07:04,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:07:04,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:07:04,581 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:07:04,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:07:04,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:07:04,582 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:07:04,582 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:07:04,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:07:04,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:07:04,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:07:04,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:07:04,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:07:04,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:07:04,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:07:04,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:07:04,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:07:04,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:07:04,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:07:04,586 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:07:04,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:07:04,586 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:07:04,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:07:04,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:07:04,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:07:04,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:07:04,869 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:07:04,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-09-16 11:07:04,929 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03bd1965/dfc55fed5c274aa2a9b515257d1aa2f9/FLAGe5f01301e [2022-09-16 11:07:05,343 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:07:05,343 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c [2022-09-16 11:07:05,350 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03bd1965/dfc55fed5c274aa2a9b515257d1aa2f9/FLAGe5f01301e [2022-09-16 11:07:05,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f03bd1965/dfc55fed5c274aa2a9b515257d1aa2f9 [2022-09-16 11:07:05,366 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:07:05,367 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:07:05,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:07:05,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:07:05,372 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:07:05,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cb0b7bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05, skipping insertion in model container [2022-09-16 11:07:05,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:07:05,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:07:05,626 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-09-16 11:07:05,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:07:05,645 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:07:05,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-series.wvr.c[4351,4364] [2022-09-16 11:07:05,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:07:05,720 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:07:05,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05 WrapperNode [2022-09-16 11:07:05,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:07:05,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:07:05,722 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:07:05,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:07:05,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,752 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,795 INFO L138 Inliner]: procedures = 27, calls = 87, calls flagged for inlining = 22, calls inlined = 28, statements flattened = 398 [2022-09-16 11:07:05,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:07:05,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:07:05,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:07:05,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:07:05,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:07:05,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:07:05,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:07:05,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:07:05,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (1/1) ... [2022-09-16 11:07:05,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:07:05,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:07:05,887 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 11:07:05,889 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 11:07:05,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:07:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:07:05,919 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:07:05,919 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:07:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:07:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:07:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:07:05,920 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:07:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:07:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:07:05,920 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:07:05,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:07:05,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:07:05,923 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 11:07:06,017 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:07:06,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:07:06,624 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:07:07,026 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:07:07,027 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-09-16 11:07:07,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:07:07 BoogieIcfgContainer [2022-09-16 11:07:07,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:07:07,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:07:07,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:07:07,038 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:07:07,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:07:05" (1/3) ... [2022-09-16 11:07:07,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f110ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:07:07, skipping insertion in model container [2022-09-16 11:07:07,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:07:05" (2/3) ... [2022-09-16 11:07:07,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38f110ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:07:07, skipping insertion in model container [2022-09-16 11:07:07,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:07:07" (3/3) ... [2022-09-16 11:07:07,043 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-series.wvr.c [2022-09-16 11:07:07,050 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:07:07,056 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:07:07,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-09-16 11:07:07,057 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:07:07,234 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:07:07,278 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 295 places, 304 transitions, 640 flow [2022-09-16 11:07:13,035 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 177303 states, 174463 states have (on average 4.978430956707153) internal successors, (868552), 177302 states have internal predecessors, (868552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:13,055 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:07:13,061 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;@695fc3fb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:07:13,061 INFO L358 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2022-09-16 11:07:13,369 INFO L276 IsEmpty]: Start isEmpty. Operand has 177303 states, 174463 states have (on average 4.978430956707153) internal successors, (868552), 177302 states have internal predecessors, (868552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-09-16 11:07:13,376 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:07:13,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:07:13,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:07:13,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:07:13,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1762565349, now seen corresponding path program 1 times [2022-09-16 11:07:13,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:07:13,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957839094] [2022-09-16 11:07:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:13,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:07:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:13,679 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 11:07:13,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:07:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957839094] [2022-09-16 11:07:13,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957839094] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:07:13,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:07:13,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:07:13,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89895208] [2022-09-16 11:07:13,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:07:13,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:07:13,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:07:13,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:07:13,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:07:14,829 INFO L87 Difference]: Start difference. First operand has 177303 states, 174463 states have (on average 4.978430956707153) internal successors, (868552), 177302 states have internal predecessors, (868552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:18,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:07:18,089 INFO L93 Difference]: Finished difference Result 153793 states and 706549 transitions. [2022-09-16 11:07:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:07:18,094 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2022-09-16 11:07:18,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:07:20,153 INFO L225 Difference]: With dead ends: 153793 [2022-09-16 11:07:20,153 INFO L226 Difference]: Without dead ends: 153785 [2022-09-16 11:07:20,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-16 11:07:20,157 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 133 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:07:20,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 597 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:07:20,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153785 states. [2022-09-16 11:07:25,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153785 to 76967. [2022-09-16 11:07:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76967 states, 76530 states have (on average 4.6171174702730955) internal successors, (353348), 76966 states have internal predecessors, (353348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:26,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76967 states to 76967 states and 353348 transitions. [2022-09-16 11:07:26,737 INFO L78 Accepts]: Start accepts. Automaton has 76967 states and 353348 transitions. Word has length 73 [2022-09-16 11:07:26,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:07:26,740 INFO L495 AbstractCegarLoop]: Abstraction has 76967 states and 353348 transitions. [2022-09-16 11:07:26,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:26,741 INFO L276 IsEmpty]: Start isEmpty. Operand 76967 states and 353348 transitions. [2022-09-16 11:07:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-09-16 11:07:26,757 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:07:26,757 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:07:26,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:07:26,758 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:07:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:07:26,759 INFO L85 PathProgramCache]: Analyzing trace with hash -54071210, now seen corresponding path program 1 times [2022-09-16 11:07:26,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:07:26,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337094396] [2022-09-16 11:07:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:26,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:07:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:07:26,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:07:26,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337094396] [2022-09-16 11:07:26,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337094396] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:07:26,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451305978] [2022-09-16 11:07:26,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:26,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:07:26,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:07:26,859 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 11:07:26,888 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 11:07:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:27,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:07:27,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:07:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:07:27,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:07:27,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:07:27,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451305978] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:07:27,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:07:27,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:07:27,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040575825] [2022-09-16 11:07:27,216 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:07:27,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:07:27,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:07:27,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:07:27,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:07:27,218 INFO L87 Difference]: Start difference. First operand 76967 states and 353348 transitions. Second operand has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:07:34,530 INFO L93 Difference]: Finished difference Result 384308 states and 1766198 transitions. [2022-09-16 11:07:34,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:07:34,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-09-16 11:07:34,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:07:40,367 INFO L225 Difference]: With dead ends: 384308 [2022-09-16 11:07:40,368 INFO L226 Difference]: Without dead ends: 384308 [2022-09-16 11:07:40,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:07:40,371 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 816 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:07:40,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [816 Valid, 1383 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-09-16 11:07:41,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384308 states. [2022-09-16 11:07:50,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384308 to 77045. [2022-09-16 11:07:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77045 states, 76608 states have (on average 4.613630430242273) internal successors, (353441), 77044 states have internal predecessors, (353441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77045 states to 77045 states and 353441 transitions. [2022-09-16 11:07:51,900 INFO L78 Accepts]: Start accepts. Automaton has 77045 states and 353441 transitions. Word has length 82 [2022-09-16 11:07:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:07:51,901 INFO L495 AbstractCegarLoop]: Abstraction has 77045 states and 353441 transitions. [2022-09-16 11:07:51,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.727272727272727) internal successors, (107), 12 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 77045 states and 353441 transitions. [2022-09-16 11:07:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-09-16 11:07:51,903 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:07:51,903 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:07:51,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:07:52,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:07:52,104 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:07:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:07:52,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1676206516, now seen corresponding path program 1 times [2022-09-16 11:07:52,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:07:52,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158894667] [2022-09-16 11:07:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:52,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:07:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:07:52,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:07:52,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158894667] [2022-09-16 11:07:52,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158894667] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:07:52,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762199453] [2022-09-16 11:07:52,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:07:52,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:07:52,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:07:52,243 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 11:07:52,246 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 11:07:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:07:52,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:07:52,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:07:52,448 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:07:52,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:07:52,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762199453] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:07:52,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:07:52,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:07:52,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427998357] [2022-09-16 11:07:52,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:07:52,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:07:52,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:07:52,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:07:52,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:07:52,453 INFO L87 Difference]: Start difference. First operand 77045 states and 353441 transitions. Second operand has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:07:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:07:54,831 INFO L93 Difference]: Finished difference Result 153854 states and 706619 transitions. [2022-09-16 11:07:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:07:54,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2022-09-16 11:07:54,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:07:56,831 INFO L225 Difference]: With dead ends: 153854 [2022-09-16 11:07:56,831 INFO L226 Difference]: Without dead ends: 153854 [2022-09-16 11:07:56,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:07:56,833 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 270 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:07:56,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1093 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:07:57,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153854 states. [2022-09-16 11:08:01,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153854 to 77042. [2022-09-16 11:08:01,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77042 states, 76608 states have (on average 4.613512949039265) internal successors, (353432), 77041 states have internal predecessors, (353432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:02,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77042 states to 77042 states and 353432 transitions. [2022-09-16 11:08:02,708 INFO L78 Accepts]: Start accepts. Automaton has 77042 states and 353432 transitions. Word has length 83 [2022-09-16 11:08:02,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:02,709 INFO L495 AbstractCegarLoop]: Abstraction has 77042 states and 353432 transitions. [2022-09-16 11:08:02,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.6) internal successors, (83), 6 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:02,709 INFO L276 IsEmpty]: Start isEmpty. Operand 77042 states and 353432 transitions. [2022-09-16 11:08:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-09-16 11:08:02,711 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:02,711 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:08:02,755 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 11:08:02,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:08:02,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:02,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:02,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1028279515, now seen corresponding path program 2 times [2022-09-16 11:08:02,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:02,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230208518] [2022-09-16 11:08:02,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:02,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:03,160 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:03,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:03,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230208518] [2022-09-16 11:08:03,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230208518] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:03,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814097606] [2022-09-16 11:08:03,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:08:03,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:03,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:03,165 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 11:08:03,166 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 11:08:03,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:08:03,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:08:03,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:08:03,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:03,531 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:08:03,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:08:03,766 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:08:03,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814097606] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:08:03,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:08:03,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:08:03,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204847850] [2022-09-16 11:08:03,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:08:03,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:08:03,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:03,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:08:03,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:08:03,771 INFO L87 Difference]: Start difference. First operand 77042 states and 353432 transitions. Second operand has 18 states, 17 states have (on average 9.352941176470589) internal successors, (159), 18 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:15,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:15,197 INFO L93 Difference]: Finished difference Result 493362 states and 2266728 transitions. [2022-09-16 11:08:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:08:15,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.352941176470589) internal successors, (159), 18 states have internal predecessors, (159), 0 states have call successors, (0), 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 109 [2022-09-16 11:08:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:21,825 INFO L225 Difference]: With dead ends: 493362 [2022-09-16 11:08:21,825 INFO L226 Difference]: Without dead ends: 493362 [2022-09-16 11:08:21,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 207 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=991, Invalid=3041, Unknown=0, NotChecked=0, Total=4032 [2022-09-16 11:08:21,828 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 3480 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 1937 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:21,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 1937 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-09-16 11:08:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493362 states. [2022-09-16 11:08:35,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493362 to 70672. [2022-09-16 11:08:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70672 states, 70311 states have (on average 4.608411201661191) internal successors, (324022), 70671 states have internal predecessors, (324022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70672 states to 70672 states and 324022 transitions. [2022-09-16 11:08:35,600 INFO L78 Accepts]: Start accepts. Automaton has 70672 states and 324022 transitions. Word has length 109 [2022-09-16 11:08:35,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:35,601 INFO L495 AbstractCegarLoop]: Abstraction has 70672 states and 324022 transitions. [2022-09-16 11:08:35,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.352941176470589) internal successors, (159), 18 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:35,601 INFO L276 IsEmpty]: Start isEmpty. Operand 70672 states and 324022 transitions. [2022-09-16 11:08:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-09-16 11:08:35,603 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:35,603 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:08:35,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:08:35,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:35,808 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:35,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:35,808 INFO L85 PathProgramCache]: Analyzing trace with hash -40991351, now seen corresponding path program 1 times [2022-09-16 11:08:35,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:35,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278828228] [2022-09-16 11:08:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:35,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:36,312 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 11:08:36,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278828228] [2022-09-16 11:08:36,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278828228] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:36,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:36,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:08:36,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503348918] [2022-09-16 11:08:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:36,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:08:36,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:08:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:08:36,314 INFO L87 Difference]: Start difference. First operand 70672 states and 324022 transitions. Second operand has 3 states, 2 states have (on average 70.5) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:37,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:37,993 INFO L93 Difference]: Finished difference Result 114655 states and 524956 transitions. [2022-09-16 11:08:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:08:37,994 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 70.5) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 141 [2022-09-16 11:08:37,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:40,048 INFO L225 Difference]: With dead ends: 114655 [2022-09-16 11:08:40,048 INFO L226 Difference]: Without dead ends: 114655 [2022-09-16 11:08:40,048 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 11:08:40,049 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 96 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:40,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 269 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:40,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114655 states. [2022-09-16 11:08:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114655 to 90490. [2022-09-16 11:08:44,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90490 states, 90129 states have (on average 4.689123367617526) internal successors, (422626), 90489 states have internal predecessors, (422626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90490 states to 90490 states and 422626 transitions. [2022-09-16 11:08:45,714 INFO L78 Accepts]: Start accepts. Automaton has 90490 states and 422626 transitions. Word has length 141 [2022-09-16 11:08:45,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:45,715 INFO L495 AbstractCegarLoop]: Abstraction has 90490 states and 422626 transitions. [2022-09-16 11:08:45,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 70.5) internal successors, (141), 3 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:45,715 INFO L276 IsEmpty]: Start isEmpty. Operand 90490 states and 422626 transitions. [2022-09-16 11:08:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-09-16 11:08:45,717 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:45,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:08:45,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:08:45,717 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash -491340124, now seen corresponding path program 1 times [2022-09-16 11:08:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:45,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769328357] [2022-09-16 11:08:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:45,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:08:45,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769328357] [2022-09-16 11:08:45,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769328357] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:08:45,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706297844] [2022-09-16 11:08:45,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:45,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:08:45,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:08:45,836 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 11:08:45,838 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 11:08:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:45,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:08:46,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:08:46,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:08:46,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:08:46,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706297844] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:46,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:08:46,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2022-09-16 11:08:46,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224954936] [2022-09-16 11:08:46,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:46,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:46,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:46,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:46,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:08:46,133 INFO L87 Difference]: Start difference. First operand 90490 states and 422626 transitions. Second operand has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:47,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:47,679 INFO L93 Difference]: Finished difference Result 114690 states and 524520 transitions. [2022-09-16 11:08:47,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:08:47,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2022-09-16 11:08:47,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:49,109 INFO L225 Difference]: With dead ends: 114690 [2022-09-16 11:08:49,110 INFO L226 Difference]: Without dead ends: 113610 [2022-09-16 11:08:49,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:08:49,111 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 196 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:49,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 748 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:49,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113610 states. [2022-09-16 11:08:53,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113610 to 107364. [2022-09-16 11:08:53,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107364 states, 106934 states have (on average 4.634344548974133) internal successors, (495569), 107363 states have internal predecessors, (495569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:54,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107364 states to 107364 states and 495569 transitions. [2022-09-16 11:08:54,736 INFO L78 Accepts]: Start accepts. Automaton has 107364 states and 495569 transitions. Word has length 145 [2022-09-16 11:08:54,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:08:54,736 INFO L495 AbstractCegarLoop]: Abstraction has 107364 states and 495569 transitions. [2022-09-16 11:08:54,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.166666666666668) internal successors, (145), 6 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:54,737 INFO L276 IsEmpty]: Start isEmpty. Operand 107364 states and 495569 transitions. [2022-09-16 11:08:54,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:08:54,738 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:08:54,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:08:54,763 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 11:08:54,962 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 11:08:54,963 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:08:54,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:08:54,964 INFO L85 PathProgramCache]: Analyzing trace with hash -689609257, now seen corresponding path program 1 times [2022-09-16 11:08:54,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:08:54,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316724533] [2022-09-16 11:08:54,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:08:54,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:08:54,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:08:55,060 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 11:08:55,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:08:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316724533] [2022-09-16 11:08:55,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316724533] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:08:55,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:08:55,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:08:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930834477] [2022-09-16 11:08:55,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:08:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:08:55,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:08:55,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:08:55,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:08:55,067 INFO L87 Difference]: Start difference. First operand 107364 states and 495569 transitions. Second operand has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:08:57,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:08:57,551 INFO L93 Difference]: Finished difference Result 139226 states and 629848 transitions. [2022-09-16 11:08:57,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:08:57,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 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 146 [2022-09-16 11:08:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:08:58,639 INFO L225 Difference]: With dead ends: 139226 [2022-09-16 11:08:58,639 INFO L226 Difference]: Without dead ends: 133226 [2022-09-16 11:08:58,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:08:58,641 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 182 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:08:58,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 745 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:08:59,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133226 states. [2022-09-16 11:09:03,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133226 to 128113. [2022-09-16 11:09:04,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128113 states, 127641 states have (on average 4.584130490986438) internal successors, (585123), 128112 states have internal predecessors, (585123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128113 states to 128113 states and 585123 transitions. [2022-09-16 11:09:05,908 INFO L78 Accepts]: Start accepts. Automaton has 128113 states and 585123 transitions. Word has length 146 [2022-09-16 11:09:05,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:05,909 INFO L495 AbstractCegarLoop]: Abstraction has 128113 states and 585123 transitions. [2022-09-16 11:09:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:05,909 INFO L276 IsEmpty]: Start isEmpty. Operand 128113 states and 585123 transitions. [2022-09-16 11:09:05,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-09-16 11:09:05,927 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:05,927 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:05,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:09:05,928 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 59 more)] === [2022-09-16 11:09:05,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:05,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2111045673, now seen corresponding path program 1 times [2022-09-16 11:09:05,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:05,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2615887] [2022-09-16 11:09:05,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:05,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:06,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:06,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2615887] [2022-09-16 11:09:06,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2615887] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:06,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001951545] [2022-09-16 11:09:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:06,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:06,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:06,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:06,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:09:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:06,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 15 conjunts are in the unsatisfiable core [2022-09-16 11:09:06,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:06,526 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:06,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:06,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001951545] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:06,814 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:06,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-09-16 11:09:06,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510933847] [2022-09-16 11:09:06,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:06,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-09-16 11:09:06,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:06,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-09-16 11:09:06,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:09:06,817 INFO L87 Difference]: Start difference. First operand 128113 states and 585123 transitions. Second operand has 32 states, 31 states have (on average 7.225806451612903) internal successors, (224), 32 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)