/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-sum-array-hom.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:10:20,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:10:20,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:10:20,393 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:10:20,394 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:10:20,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:10:20,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:10:20,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:10:20,405 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:10:20,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:10:20,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:10:20,411 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:10:20,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:10:20,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:10:20,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:10:20,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:10:20,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:10:20,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:10:20,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:10:20,425 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:10:20,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:10:20,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:10:20,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:10:20,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:10:20,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:10:20,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:10:20,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:10:20,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:10:20,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:10:20,435 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:10:20,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:10:20,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:10:20,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:10:20,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:10:20,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:10:20,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:10:20,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:10:20,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:10:20,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:10:20,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:10:20,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:10:20,440 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 11:10:20,464 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:10:20,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:10:20,464 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:10:20,465 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:10:20,465 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:10:20,465 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:10:20,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:10:20,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:10:20,466 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:10:20,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:10:20,467 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:10:20,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:10:20,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:10:20,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:10:20,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:10:20,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:10:20,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:10:20,469 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:10:20,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:10:20,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:10:20,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:10:20,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:10:20,710 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:10:20,711 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:10:20,711 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:10:20,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2022-09-16 11:10:20,763 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28e79ec4/fd6f5c09ca30496994047cfdea470d34/FLAG38f4f1cf5 [2022-09-16 11:10:21,114 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:10:21,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sum-array-hom.wvr.c [2022-09-16 11:10:21,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28e79ec4/fd6f5c09ca30496994047cfdea470d34/FLAG38f4f1cf5 [2022-09-16 11:10:21,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e28e79ec4/fd6f5c09ca30496994047cfdea470d34 [2022-09-16 11:10:21,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:10:21,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:10:21,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:10:21,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:10:21,136 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:10:21,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d931d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21, skipping insertion in model container [2022-09-16 11:10:21,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:10:21,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:10:21,381 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-sum-array-hom.wvr.c[2396,2409] [2022-09-16 11:10:21,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:10:21,400 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:10:21,433 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-sum-array-hom.wvr.c[2396,2409] [2022-09-16 11:10:21,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:10:21,448 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:10:21,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21 WrapperNode [2022-09-16 11:10:21,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:10:21,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:10:21,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:10:21,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:10:21,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,495 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-09-16 11:10:21,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:10:21,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:10:21,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:10:21,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:10:21,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:10:21,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:10:21,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:10:21,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:10:21,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (1/1) ... [2022-09-16 11:10:21,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:10:21,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:21,563 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 11:10:21,583 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 11:10:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:10:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:10:21,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:10:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:10:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:10:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:10:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:10:21,596 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:10:21,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:10:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:10:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:10:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:10:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:10:21,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:10:21,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:10:21,598 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 11:10:21,682 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:10:21,684 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:10:21,968 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:10:21,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:10:21,975 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:10:21,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:10:21 BoogieIcfgContainer [2022-09-16 11:10:21,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:10:21,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:10:21,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:10:21,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:10:21,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:10:21" (1/3) ... [2022-09-16 11:10:21,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e76c43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:10:21, skipping insertion in model container [2022-09-16 11:10:21,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:10:21" (2/3) ... [2022-09-16 11:10:21,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e76c43c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:10:21, skipping insertion in model container [2022-09-16 11:10:21,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:10:21" (3/3) ... [2022-09-16 11:10:21,986 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-09-16 11:10:21,991 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:10:21,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:10:21,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-09-16 11:10:21,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:10:22,060 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:10:22,092 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 173 places, 175 transitions, 374 flow [2022-09-16 11:10:22,571 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 15593 states, 15565 states have (on average 3.8161259235464184) internal successors, (59398), 15592 states have internal predecessors, (59398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:22,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:10:22,591 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;@29b13d39, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:10:22,591 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-09-16 11:10:22,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 15593 states, 15565 states have (on average 3.8161259235464184) internal successors, (59398), 15592 states have internal predecessors, (59398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-09-16 11:10:22,703 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:22,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:22,704 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:22,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1944625238, now seen corresponding path program 1 times [2022-09-16 11:10:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:22,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596243729] [2022-09-16 11:10:22,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:22,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:22,991 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 11:10:22,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:22,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596243729] [2022-09-16 11:10:22,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596243729] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:22,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:22,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:10:22,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145424523] [2022-09-16 11:10:22,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:22,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:22,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:23,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:10:23,055 INFO L87 Difference]: Start difference. First operand has 15593 states, 15565 states have (on average 3.8161259235464184) internal successors, (59398), 15592 states have internal predecessors, (59398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:23,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:23,704 INFO L93 Difference]: Finished difference Result 31134 states and 113036 transitions. [2022-09-16 11:10:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:10:23,707 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2022-09-16 11:10:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:24,037 INFO L225 Difference]: With dead ends: 31134 [2022-09-16 11:10:24,037 INFO L226 Difference]: Without dead ends: 31130 [2022-09-16 11:10:24,039 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 11:10:24,041 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 88 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:24,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 392 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:24,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31130 states. [2022-09-16 11:10:24,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31130 to 15597. [2022-09-16 11:10:24,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15597 states, 15569 states have (on average 3.632153638640889) internal successors, (56549), 15596 states have internal predecessors, (56549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:25,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15597 states to 15597 states and 56549 transitions. [2022-09-16 11:10:25,137 INFO L78 Accepts]: Start accepts. Automaton has 15597 states and 56549 transitions. Word has length 54 [2022-09-16 11:10:25,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:25,137 INFO L495 AbstractCegarLoop]: Abstraction has 15597 states and 56549 transitions. [2022-09-16 11:10:25,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:25,138 INFO L276 IsEmpty]: Start isEmpty. Operand 15597 states and 56549 transitions. [2022-09-16 11:10:25,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-09-16 11:10:25,139 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:25,140 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:25,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:10:25,140 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:25,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:25,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1506508057, now seen corresponding path program 1 times [2022-09-16 11:10:25,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:25,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398663780] [2022-09-16 11:10:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:25,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:25,251 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 11:10:25,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:25,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398663780] [2022-09-16 11:10:25,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398663780] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:25,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357773078] [2022-09-16 11:10:25,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:25,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:25,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:25,255 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 11:10:25,256 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 11:10:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:25,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:25,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:25,479 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 11:10:25,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:25,531 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 11:10:25,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357773078] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:25,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:25,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:10:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718151502] [2022-09-16 11:10:25,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:10:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:10:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:10:25,534 INFO L87 Difference]: Start difference. First operand 15597 states and 56549 transitions. Second operand has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:26,793 INFO L93 Difference]: Finished difference Result 77752 states and 282507 transitions. [2022-09-16 11:10:26,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:10:26,798 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-09-16 11:10:26,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:27,870 INFO L225 Difference]: With dead ends: 77752 [2022-09-16 11:10:27,870 INFO L226 Difference]: Without dead ends: 77752 [2022-09-16 11:10:27,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:10:27,871 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 702 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:27,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 946 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77752 states. [2022-09-16 11:10:29,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77752 to 15623. [2022-09-16 11:10:29,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15623 states, 15595 states have (on average 3.6280859249759536) internal successors, (56580), 15622 states have internal predecessors, (56580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:29,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15623 states to 15623 states and 56580 transitions. [2022-09-16 11:10:29,266 INFO L78 Accepts]: Start accepts. Automaton has 15623 states and 56580 transitions. Word has length 63 [2022-09-16 11:10:29,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:29,266 INFO L495 AbstractCegarLoop]: Abstraction has 15623 states and 56580 transitions. [2022-09-16 11:10:29,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.0) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:29,267 INFO L276 IsEmpty]: Start isEmpty. Operand 15623 states and 56580 transitions. [2022-09-16 11:10:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-09-16 11:10:29,268 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:29,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:29,307 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 11:10:29,508 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 11:10:29,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:29,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:29,509 INFO L85 PathProgramCache]: Analyzing trace with hash 542890882, now seen corresponding path program 1 times [2022-09-16 11:10:29,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:29,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883866441] [2022-09-16 11:10:29,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:29,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:29,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:29,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:29,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883866441] [2022-09-16 11:10:29,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883866441] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:29,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325114890] [2022-09-16 11:10:29,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:29,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:29,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:29,563 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 11:10:29,564 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 11:10:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:29,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:29,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:29,665 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 11:10:29,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:29,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325114890] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:29,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:29,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:10:29,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206537687] [2022-09-16 11:10:29,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:29,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:29,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:29,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:29,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:29,667 INFO L87 Difference]: Start difference. First operand 15623 states and 56580 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:30,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:30,049 INFO L93 Difference]: Finished difference Result 31153 states and 113058 transitions. [2022-09-16 11:10:30,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:30,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-09-16 11:10:30,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:30,175 INFO L225 Difference]: With dead ends: 31153 [2022-09-16 11:10:30,176 INFO L226 Difference]: Without dead ends: 31153 [2022-09-16 11:10:30,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:10:30,177 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 175 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:30,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 579 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:30,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31153 states. [2022-09-16 11:10:30,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31153 to 15622. [2022-09-16 11:10:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15622 states, 15595 states have (on average 3.6278935556268035) internal successors, (56577), 15621 states have internal predecessors, (56577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:30,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15622 states to 15622 states and 56577 transitions. [2022-09-16 11:10:30,867 INFO L78 Accepts]: Start accepts. Automaton has 15622 states and 56577 transitions. Word has length 64 [2022-09-16 11:10:30,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:30,867 INFO L495 AbstractCegarLoop]: Abstraction has 15622 states and 56577 transitions. [2022-09-16 11:10:30,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 15622 states and 56577 transitions. [2022-09-16 11:10:30,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-09-16 11:10:30,868 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:30,868 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] [2022-09-16 11:10:30,885 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 11:10:31,085 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 11:10:31,086 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:31,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 657361162, now seen corresponding path program 1 times [2022-09-16 11:10:31,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:31,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452481719] [2022-09-16 11:10:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:31,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:31,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:31,121 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 11:10:31,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:31,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452481719] [2022-09-16 11:10:31,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452481719] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:31,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:31,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:10:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703865231] [2022-09-16 11:10:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:31,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:31,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:31,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:31,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:10:31,122 INFO L87 Difference]: Start difference. First operand 15622 states and 56577 transitions. Second operand has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:31,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:31,553 INFO L93 Difference]: Finished difference Result 28150 states and 102072 transitions. [2022-09-16 11:10:31,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:10:31,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-09-16 11:10:31,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:31,675 INFO L225 Difference]: With dead ends: 28150 [2022-09-16 11:10:31,676 INFO L226 Difference]: Without dead ends: 28150 [2022-09-16 11:10:31,676 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 11:10:31,677 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 149 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:31,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 554 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:10:31,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28150 states. [2022-09-16 11:10:32,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28150 to 22594. [2022-09-16 11:10:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22594 states, 22567 states have (on average 3.6839633092568795) internal successors, (83136), 22593 states have internal predecessors, (83136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:32,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22594 states to 22594 states and 83136 transitions. [2022-09-16 11:10:32,494 INFO L78 Accepts]: Start accepts. Automaton has 22594 states and 83136 transitions. Word has length 71 [2022-09-16 11:10:32,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:32,495 INFO L495 AbstractCegarLoop]: Abstraction has 22594 states and 83136 transitions. [2022-09-16 11:10:32,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:32,495 INFO L276 IsEmpty]: Start isEmpty. Operand 22594 states and 83136 transitions. [2022-09-16 11:10:32,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-09-16 11:10:32,733 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:32,733 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] [2022-09-16 11:10:32,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-16 11:10:32,733 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:32,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:32,734 INFO L85 PathProgramCache]: Analyzing trace with hash 269526408, now seen corresponding path program 1 times [2022-09-16 11:10:32,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:32,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534727117] [2022-09-16 11:10:32,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:32,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:32,794 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 11:10:32,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:32,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534727117] [2022-09-16 11:10:32,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534727117] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:32,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:32,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:10:32,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425605313] [2022-09-16 11:10:32,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:32,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:32,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:32,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:32,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:10:32,796 INFO L87 Difference]: Start difference. First operand 22594 states and 83136 transitions. Second operand has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:33,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:33,080 INFO L93 Difference]: Finished difference Result 40459 states and 149250 transitions. [2022-09-16 11:10:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:10:33,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-09-16 11:10:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:33,246 INFO L225 Difference]: With dead ends: 40459 [2022-09-16 11:10:33,246 INFO L226 Difference]: Without dead ends: 40459 [2022-09-16 11:10:33,246 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 11:10:33,247 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 137 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:33,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 542 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40459 states. [2022-09-16 11:10:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40459 to 33073. [2022-09-16 11:10:34,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33073 states, 33046 states have (on average 3.734703141076076) internal successors, (123417), 33072 states have internal predecessors, (123417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:34,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33073 states to 33073 states and 123417 transitions. [2022-09-16 11:10:34,582 INFO L78 Accepts]: Start accepts. Automaton has 33073 states and 123417 transitions. Word has length 77 [2022-09-16 11:10:34,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:34,583 INFO L495 AbstractCegarLoop]: Abstraction has 33073 states and 123417 transitions. [2022-09-16 11:10:34,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:34,583 INFO L276 IsEmpty]: Start isEmpty. Operand 33073 states and 123417 transitions. [2022-09-16 11:10:34,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-09-16 11:10:34,586 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:34,586 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] [2022-09-16 11:10:34,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:10:34,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:34,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:34,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1593264790, now seen corresponding path program 1 times [2022-09-16 11:10:34,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:34,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198770657] [2022-09-16 11:10:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:34,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:34,646 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 11:10:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198770657] [2022-09-16 11:10:34,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198770657] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:34,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782604751] [2022-09-16 11:10:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:34,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:34,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:34,648 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 11:10:34,649 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 11:10:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:34,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-16 11:10:34,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:34,832 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-09-16 11:10:34,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:34,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782604751] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:34,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:34,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-09-16 11:10:34,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877388279] [2022-09-16 11:10:34,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:34,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:10:34,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:34,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:10:34,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:10:34,834 INFO L87 Difference]: Start difference. First operand 33073 states and 123417 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:35,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:35,375 INFO L93 Difference]: Finished difference Result 41269 states and 151650 transitions. [2022-09-16 11:10:35,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-16 11:10:35,375 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-09-16 11:10:35,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:35,531 INFO L225 Difference]: With dead ends: 41269 [2022-09-16 11:10:35,531 INFO L226 Difference]: Without dead ends: 41197 [2022-09-16 11:10:35,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:10:35,532 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 558 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:35,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 478 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:35,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41197 states. [2022-09-16 11:10:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41197 to 35932. [2022-09-16 11:10:36,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35932 states, 35905 states have (on average 3.731680824397716) internal successors, (133986), 35931 states have internal predecessors, (133986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35932 states to 35932 states and 133986 transitions. [2022-09-16 11:10:36,955 INFO L78 Accepts]: Start accepts. Automaton has 35932 states and 133986 transitions. Word has length 80 [2022-09-16 11:10:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:36,955 INFO L495 AbstractCegarLoop]: Abstraction has 35932 states and 133986 transitions. [2022-09-16 11:10:36,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 35932 states and 133986 transitions. [2022-09-16 11:10:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-09-16 11:10:36,958 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:36,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:36,976 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 11:10:37,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:37,172 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:37,173 INFO L85 PathProgramCache]: Analyzing trace with hash 609866353, now seen corresponding path program 1 times [2022-09-16 11:10:37,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:37,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255958524] [2022-09-16 11:10:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:37,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:37,287 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 11:10:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:37,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255958524] [2022-09-16 11:10:37,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255958524] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:37,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:37,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:10:37,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372800631] [2022-09-16 11:10:37,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:37,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-16 11:10:37,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-16 11:10:37,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:37,288 INFO L87 Difference]: Start difference. First operand 35932 states and 133986 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 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 11:10:38,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:38,136 INFO L93 Difference]: Finished difference Result 40688 states and 149603 transitions. [2022-09-16 11:10:38,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-16 11:10:38,136 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 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 11:10:38,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:38,333 INFO L225 Difference]: With dead ends: 40688 [2022-09-16 11:10:38,334 INFO L226 Difference]: Without dead ends: 40688 [2022-09-16 11:10:38,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-09-16 11:10:38,334 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 613 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:38,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 788 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:38,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40688 states. [2022-09-16 11:10:39,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40688 to 39500. [2022-09-16 11:10:39,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39500 states, 39473 states have (on average 3.705064221113166) internal successors, (146250), 39499 states have internal predecessors, (146250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:39,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39500 states to 39500 states and 146250 transitions. [2022-09-16 11:10:39,711 INFO L78 Accepts]: Start accepts. Automaton has 39500 states and 146250 transitions. Word has length 83 [2022-09-16 11:10:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:39,712 INFO L495 AbstractCegarLoop]: Abstraction has 39500 states and 146250 transitions. [2022-09-16 11:10:39,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 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 11:10:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 39500 states and 146250 transitions. [2022-09-16 11:10:39,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-09-16 11:10:39,716 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:39,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:39,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:10:39,716 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:39,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:39,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1725988233, now seen corresponding path program 1 times [2022-09-16 11:10:39,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:39,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301262114] [2022-09-16 11:10:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:39,790 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 11:10:39,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:39,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301262114] [2022-09-16 11:10:39,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301262114] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:39,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:39,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:10:39,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927348822] [2022-09-16 11:10:39,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:39,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:39,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:39,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:10:39,793 INFO L87 Difference]: Start difference. First operand 39500 states and 146250 transitions. Second operand has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:40,089 INFO L93 Difference]: Finished difference Result 37319 states and 137606 transitions. [2022-09-16 11:10:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-09-16 11:10:40,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:40,236 INFO L225 Difference]: With dead ends: 37319 [2022-09-16 11:10:40,236 INFO L226 Difference]: Without dead ends: 36509 [2022-09-16 11:10:40,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:10:40,239 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 159 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:40,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 662 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:40,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36509 states. [2022-09-16 11:10:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36509 to 36509. [2022-09-16 11:10:41,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36509 states, 36491 states have (on average 3.689512482529939) internal successors, (134634), 36508 states have internal predecessors, (134634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:41,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36509 states to 36509 states and 134634 transitions. [2022-09-16 11:10:41,589 INFO L78 Accepts]: Start accepts. Automaton has 36509 states and 134634 transitions. Word has length 84 [2022-09-16 11:10:41,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:41,589 INFO L495 AbstractCegarLoop]: Abstraction has 36509 states and 134634 transitions. [2022-09-16 11:10:41,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.8) internal successors, (84), 6 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:41,589 INFO L276 IsEmpty]: Start isEmpty. Operand 36509 states and 134634 transitions. [2022-09-16 11:10:41,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-09-16 11:10:41,595 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:41,595 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, 1, 1, 1, 1] [2022-09-16 11:10:41,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:10:41,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:41,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -976333848, now seen corresponding path program 1 times [2022-09-16 11:10:41,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:41,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348061871] [2022-09-16 11:10:41,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:41,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:41,635 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 11:10:41,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348061871] [2022-09-16 11:10:41,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348061871] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:41,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610533251] [2022-09-16 11:10:41,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:41,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:41,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:41,636 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 11:10:41,638 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 11:10:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:41,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:41,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:41,734 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 11:10:41,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:41,780 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 11:10:41,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610533251] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:41,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:41,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:10:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340779185] [2022-09-16 11:10:41,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:10:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:10:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:10:41,782 INFO L87 Difference]: Start difference. First operand 36509 states and 134634 transitions. Second operand has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:43,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:43,318 INFO L93 Difference]: Finished difference Result 105363 states and 385880 transitions. [2022-09-16 11:10:43,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:10:43,319 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-09-16 11:10:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:43,876 INFO L225 Difference]: With dead ends: 105363 [2022-09-16 11:10:43,876 INFO L226 Difference]: Without dead ends: 105363 [2022-09-16 11:10:43,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 165 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 11:10:43,877 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1717 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 982 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:43,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 982 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:44,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105363 states. [2022-09-16 11:10:46,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105363 to 80449. [2022-09-16 11:10:46,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80449 states, 80431 states have (on average 3.7686339844089964) internal successors, (303115), 80448 states have internal predecessors, (303115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:47,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80449 states to 80449 states and 303115 transitions. [2022-09-16 11:10:47,053 INFO L78 Accepts]: Start accepts. Automaton has 80449 states and 303115 transitions. Word has length 86 [2022-09-16 11:10:47,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:47,053 INFO L495 AbstractCegarLoop]: Abstraction has 80449 states and 303115 transitions. [2022-09-16 11:10:47,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.090909090909092) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 80449 states and 303115 transitions. [2022-09-16 11:10:47,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-09-16 11:10:47,059 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:47,059 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, 1, 1, 1, 1] [2022-09-16 11:10:47,104 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 11:10:47,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:47,276 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:47,276 INFO L85 PathProgramCache]: Analyzing trace with hash -201577758, now seen corresponding path program 1 times [2022-09-16 11:10:47,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:47,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640535858] [2022-09-16 11:10:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:47,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:47,324 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 11:10:47,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:47,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640535858] [2022-09-16 11:10:47,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640535858] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:47,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379871230] [2022-09-16 11:10:47,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:47,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:47,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:47,326 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 11:10:47,327 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 11:10:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:47,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:47,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:47,420 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 11:10:47,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:47,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379871230] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:47,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:47,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:10:47,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019571200] [2022-09-16 11:10:47,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:47,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:47,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:47,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:47,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:47,421 INFO L87 Difference]: Start difference. First operand 80449 states and 303115 transitions. Second operand has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:48,292 INFO L93 Difference]: Finished difference Result 82875 states and 307337 transitions. [2022-09-16 11:10:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:48,292 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2022-09-16 11:10:48,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:48,676 INFO L225 Difference]: With dead ends: 82875 [2022-09-16 11:10:48,676 INFO L226 Difference]: Without dead ends: 82875 [2022-09-16 11:10:48,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:10:48,677 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 228 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:48,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 944 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:48,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82875 states. [2022-09-16 11:10:50,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82875 to 78759. [2022-09-16 11:10:50,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78759 states, 78747 states have (on average 3.7276594663923706) internal successors, (293542), 78758 states have internal predecessors, (293542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78759 states to 78759 states and 293542 transitions. [2022-09-16 11:10:51,239 INFO L78 Accepts]: Start accepts. Automaton has 78759 states and 293542 transitions. Word has length 87 [2022-09-16 11:10:51,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:51,239 INFO L495 AbstractCegarLoop]: Abstraction has 78759 states and 293542 transitions. [2022-09-16 11:10:51,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.4) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:51,239 INFO L276 IsEmpty]: Start isEmpty. Operand 78759 states and 293542 transitions. [2022-09-16 11:10:51,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-09-16 11:10:51,248 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:51,248 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, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:51,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:51,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-09-16 11:10:51,466 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:10:51,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:51,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1670403181, now seen corresponding path program 1 times [2022-09-16 11:10:51,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:51,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485922120] [2022-09-16 11:10:51,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:51,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:51,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485922120] [2022-09-16 11:10:51,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485922120] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:51,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679557172] [2022-09-16 11:10:51,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:51,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:51,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:51,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:51,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:10:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:51,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:10:51,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:51,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:51,890 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:51,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679557172] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:51,891 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:51,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-09-16 11:10:51,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110402121] [2022-09-16 11:10:51,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:51,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-09-16 11:10:51,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:51,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-09-16 11:10:51,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-09-16 11:10:51,894 INFO L87 Difference]: Start difference. First operand 78759 states and 293542 transitions. Second operand has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 23 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:54,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:54,899 INFO L93 Difference]: Finished difference Result 190442 states and 699813 transitions. [2022-09-16 11:10:54,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-09-16 11:10:54,899 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 23 states have internal predecessors, (191), 0 states have call successors, (0), 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 89 [2022-09-16 11:10:54,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:56,340 INFO L225 Difference]: With dead ends: 190442 [2022-09-16 11:10:56,340 INFO L226 Difference]: Without dead ends: 190046 [2022-09-16 11:10:56,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=486, Invalid=1676, Unknown=0, NotChecked=0, Total=2162 [2022-09-16 11:10:56,341 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 3074 mSDsluCounter, 2993 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 3119 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:56,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 3119 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:10:56,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190046 states. [2022-09-16 11:11:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190046 to 133330. [2022-09-16 11:11:00,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133330 states, 133318 states have (on average 3.7808247948514078) internal successors, (504052), 133329 states have internal predecessors, (504052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:01,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133330 states to 133330 states and 504052 transitions. [2022-09-16 11:11:01,503 INFO L78 Accepts]: Start accepts. Automaton has 133330 states and 504052 transitions. Word has length 89 [2022-09-16 11:11:01,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:01,503 INFO L495 AbstractCegarLoop]: Abstraction has 133330 states and 504052 transitions. [2022-09-16 11:11:01,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 8.304347826086957) internal successors, (191), 23 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:01,503 INFO L276 IsEmpty]: Start isEmpty. Operand 133330 states and 504052 transitions. [2022-09-16 11:11:01,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-09-16 11:11:01,512 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:01,512 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:01,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-09-16 11:11:01,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:01,730 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:11:01,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1209409770, now seen corresponding path program 2 times [2022-09-16 11:11:01,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:01,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070136037] [2022-09-16 11:11:01,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:01,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:02,198 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 11:11:02,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:02,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070136037] [2022-09-16 11:11:02,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070136037] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:02,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758222184] [2022-09-16 11:11:02,198 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:02,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:02,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:02,200 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:02,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:11:02,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:02,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:02,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:11:02,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:02,357 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 11:11:02,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:02,441 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 11:11:02,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758222184] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:02,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:02,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:11:02,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795493007] [2022-09-16 11:11:02,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:02,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:11:02,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:02,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:11:02,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:11:02,443 INFO L87 Difference]: Start difference. First operand 133330 states and 504052 transitions. Second operand has 18 states, 17 states have (on average 7.588235294117647) internal successors, (129), 18 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:08,890 INFO L93 Difference]: Finished difference Result 504430 states and 1909556 transitions. [2022-09-16 11:11:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-09-16 11:11:08,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.588235294117647) internal successors, (129), 18 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-09-16 11:11:08,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:13,490 INFO L225 Difference]: With dead ends: 504430 [2022-09-16 11:11:13,490 INFO L226 Difference]: Without dead ends: 504430 [2022-09-16 11:11:13,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:11:13,491 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 2836 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2836 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:13,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2836 Valid, 1139 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:11:14,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504430 states. [2022-09-16 11:11:23,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504430 to 133306. [2022-09-16 11:11:23,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133306 states, 133295 states have (on average 3.7812821186091) internal successors, (504026), 133305 states have internal predecessors, (504026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:24,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133306 states to 133306 states and 504026 transitions. [2022-09-16 11:11:24,720 INFO L78 Accepts]: Start accepts. Automaton has 133306 states and 504026 transitions. Word has length 90 [2022-09-16 11:11:24,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:24,720 INFO L495 AbstractCegarLoop]: Abstraction has 133306 states and 504026 transitions. [2022-09-16 11:11:24,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.588235294117647) internal successors, (129), 18 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:24,720 INFO L276 IsEmpty]: Start isEmpty. Operand 133306 states and 504026 transitions. [2022-09-16 11:11:24,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-09-16 11:11:24,732 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:24,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:24,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:24,933 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:11:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 2146989140, now seen corresponding path program 1 times [2022-09-16 11:11:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:24,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996787271] [2022-09-16 11:11:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:24,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:24,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:24,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996787271] [2022-09-16 11:11:24,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996787271] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:24,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429319898] [2022-09-16 11:11:24,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:24,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:24,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:25,000 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:25,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-09-16 11:11:25,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:25,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:11:25,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:25,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:25,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1429319898] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:25,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:25,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-09-16 11:11:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996350717] [2022-09-16 11:11:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:25,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:11:25,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:25,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:11:25,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:11:25,186 INFO L87 Difference]: Start difference. First operand 133306 states and 504026 transitions. Second operand has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:26,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:26,651 INFO L93 Difference]: Finished difference Result 125454 states and 473460 transitions. [2022-09-16 11:11:26,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:11:26,652 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-09-16 11:11:26,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:27,245 INFO L225 Difference]: With dead ends: 125454 [2022-09-16 11:11:27,245 INFO L226 Difference]: Without dead ends: 123402 [2022-09-16 11:11:27,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:11:27,246 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 179 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:27,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 686 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:11:27,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123402 states. [2022-09-16 11:11:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123402 to 113962. [2022-09-16 11:11:30,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113962 states, 113957 states have (on average 3.7784602964275997) internal successors, (430582), 113961 states have internal predecessors, (430582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:31,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113962 states to 113962 states and 430582 transitions. [2022-09-16 11:11:31,432 INFO L78 Accepts]: Start accepts. Automaton has 113962 states and 430582 transitions. Word has length 92 [2022-09-16 11:11:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:31,433 INFO L495 AbstractCegarLoop]: Abstraction has 113962 states and 430582 transitions. [2022-09-16 11:11:31,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.4) internal successors, (92), 6 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:31,433 INFO L276 IsEmpty]: Start isEmpty. Operand 113962 states and 430582 transitions. [2022-09-16 11:11:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-09-16 11:11:31,458 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:31,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:31,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:31,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-09-16 11:11:31,667 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:11:31,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:31,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1576349372, now seen corresponding path program 1 times [2022-09-16 11:11:31,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:31,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780430764] [2022-09-16 11:11:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:31,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:31,717 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:11:31,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780430764] [2022-09-16 11:11:31,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780430764] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336429333] [2022-09-16 11:11:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:31,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:31,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:31,718 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:31,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-09-16 11:11:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:31,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:11:31,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:31,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:11:31,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:31,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336429333] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:31,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:31,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:11:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143794880] [2022-09-16 11:11:31,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:31,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:11:31,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:11:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:11:31,807 INFO L87 Difference]: Start difference. First operand 113962 states and 430582 transitions. Second operand has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:32,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:32,889 INFO L93 Difference]: Finished difference Result 123178 states and 460453 transitions. [2022-09-16 11:11:32,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:11:32,890 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2022-09-16 11:11:32,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:33,793 INFO L225 Difference]: With dead ends: 123178 [2022-09-16 11:11:33,793 INFO L226 Difference]: Without dead ends: 123178 [2022-09-16 11:11:33,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 97 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 11:11:33,793 INFO L413 NwaCegarLoop]: 287 mSDtfsCounter, 233 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:33,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 935 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:11:33,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123178 states. [2022-09-16 11:11:36,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123178 to 111230. [2022-09-16 11:11:36,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111230 states, 111227 states have (on average 3.779001501434004) internal successors, (420327), 111229 states have internal predecessors, (420327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:37,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111230 states to 111230 states and 420327 transitions. [2022-09-16 11:11:37,772 INFO L78 Accepts]: Start accepts. Automaton has 111230 states and 420327 transitions. Word has length 99 [2022-09-16 11:11:37,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:37,772 INFO L495 AbstractCegarLoop]: Abstraction has 111230 states and 420327 transitions. [2022-09-16 11:11:37,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.0) internal successors, (90), 6 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:37,772 INFO L276 IsEmpty]: Start isEmpty. Operand 111230 states and 420327 transitions. [2022-09-16 11:11:37,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-09-16 11:11:37,868 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:37,869 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:37,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:38,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-09-16 11:11:38,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:11:38,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1263735318, now seen corresponding path program 2 times [2022-09-16 11:11:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:38,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44614780] [2022-09-16 11:11:38,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:38,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:38,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:38,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:38,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44614780] [2022-09-16 11:11:38,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44614780] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:38,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490174372] [2022-09-16 11:11:38,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:38,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:38,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:38,230 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:38,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-09-16 11:11:38,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:38,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:38,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:11:38,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:38,441 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-09-16 11:11:38,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:38,565 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-09-16 11:11:38,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490174372] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:38,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:38,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-09-16 11:11:38,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581857617] [2022-09-16 11:11:38,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:38,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:11:38,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:38,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:11:38,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:11:38,568 INFO L87 Difference]: Start difference. First operand 111230 states and 420327 transitions. Second operand has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:42,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:42,288 INFO L93 Difference]: Finished difference Result 231457 states and 844724 transitions. [2022-09-16 11:11:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-09-16 11:11:42,289 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 0 states have call successors, (0), 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 107 [2022-09-16 11:11:42,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:43,889 INFO L225 Difference]: With dead ends: 231457 [2022-09-16 11:11:43,889 INFO L226 Difference]: Without dead ends: 223627 [2022-09-16 11:11:43,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 207 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=593, Invalid=2377, Unknown=0, NotChecked=0, Total=2970 [2022-09-16 11:11:43,890 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2931 mSDsluCounter, 3439 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2931 SdHoareTripleChecker+Valid, 3621 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:43,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2931 Valid, 3621 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:11:44,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223627 states. [2022-09-16 11:11:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223627 to 91382. [2022-09-16 11:11:48,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91382 states, 91381 states have (on average 3.7080355872664996) internal successors, (338844), 91381 states have internal predecessors, (338844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:48,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91382 states to 91382 states and 338844 transitions. [2022-09-16 11:11:48,847 INFO L78 Accepts]: Start accepts. Automaton has 91382 states and 338844 transitions. Word has length 107 [2022-09-16 11:11:48,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:48,847 INFO L495 AbstractCegarLoop]: Abstraction has 91382 states and 338844 transitions. [2022-09-16 11:11:48,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 9.052631578947368) internal successors, (172), 19 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:48,848 INFO L276 IsEmpty]: Start isEmpty. Operand 91382 states and 338844 transitions. [2022-09-16 11:11:48,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-09-16 11:11:48,932 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:48,932 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, 1, 1, 1, 1] [2022-09-16 11:11:48,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:49,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-09-16 11:11:49,148 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-09-16 11:11:49,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:49,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1199177096, now seen corresponding path program 2 times [2022-09-16 11:11:49,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:49,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738786890] [2022-09-16 11:11:49,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:49,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:49,232 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 11:11:49,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:49,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738786890] [2022-09-16 11:11:49,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738786890] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:49,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945078935] [2022-09-16 11:11:49,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:49,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:49,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:49,234 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:49,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-09-16 11:11:49,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:49,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:49,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:11:49,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:49,401 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 11:11:49,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:49,507 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 11:11:49,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945078935] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:49,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:49,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 15 [2022-09-16 11:11:49,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753270037] [2022-09-16 11:11:49,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:49,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:11:49,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:49,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:11:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:11:49,511 INFO L87 Difference]: Start difference. First operand 91382 states and 338844 transitions. Second operand has 16 states, 15 states have (on average 11.866666666666667) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:50,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:50,828 INFO L93 Difference]: Finished difference Result 116210 states and 431100 transitions. [2022-09-16 11:11:50,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-09-16 11:11:50,829 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 11.866666666666667) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-09-16 11:11:50,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:50,829 INFO L225 Difference]: With dead ends: 116210 [2022-09-16 11:11:50,829 INFO L226 Difference]: Without dead ends: 0 [2022-09-16 11:11:50,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 218 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 246 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=333, Invalid=857, Unknown=0, NotChecked=0, Total=1190 [2022-09-16 11:11:50,830 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1639 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:50,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 1442 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:11:50,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-09-16 11:11:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-09-16 11:11:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-09-16 11:11:50,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 113 [2022-09-16 11:11:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:50,831 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-09-16 11:11:50,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 11.866666666666667) internal successors, (178), 16 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-09-16 11:11:50,831 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-09-16 11:11:50,833 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-09-16 11:11:50,834 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-09-16 11:11:50,852 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-09-16 11:11:51,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-09-16 11:11:51,284 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:51,287 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-16 11:11:51,288 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-16 11:11:51,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:11:51 BasicIcfg [2022-09-16 11:11:51,289 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-16 11:11:51,290 INFO L158 Benchmark]: Toolchain (without parser) took 90157.07ms. Allocated memory was 187.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 134.9MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-09-16 11:11:51,290 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory was 151.9MB in the beginning and 151.8MB in the end (delta: 78.0kB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-16 11:11:51,290 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.23ms. Allocated memory is still 187.7MB. Free memory was 134.8MB in the beginning and 164.4MB in the end (delta: -29.6MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. [2022-09-16 11:11:51,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.39ms. Allocated memory is still 187.7MB. Free memory was 164.4MB in the beginning and 162.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-16 11:11:51,290 INFO L158 Benchmark]: Boogie Preprocessor took 36.90ms. Allocated memory is still 187.7MB. Free memory was 162.3MB in the beginning and 161.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-16 11:11:51,290 INFO L158 Benchmark]: RCFGBuilder took 443.31ms. Allocated memory is still 187.7MB. Free memory was 161.1MB in the beginning and 145.0MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-09-16 11:11:51,291 INFO L158 Benchmark]: TraceAbstraction took 89311.22ms. Allocated memory was 187.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 144.3MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. [2022-09-16 11:11:51,316 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 187.7MB. Free memory was 151.9MB in the beginning and 151.8MB in the end (delta: 78.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 315.23ms. Allocated memory is still 187.7MB. Free memory was 134.8MB in the beginning and 164.4MB in the end (delta: -29.6MB). Peak memory consumption was 14.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.39ms. Allocated memory is still 187.7MB. Free memory was 164.4MB in the beginning and 162.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.90ms. Allocated memory is still 187.7MB. Free memory was 162.3MB in the beginning and 161.1MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 443.31ms. Allocated memory is still 187.7MB. Free memory was 161.1MB in the beginning and 145.0MB in the end (delta: 16.0MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 89311.22ms. Allocated memory was 187.7MB in the beginning and 8.0GB in the end (delta: 7.8GB). Free memory was 144.3MB in the beginning and 5.6GB in the end (delta: -5.4GB). Peak memory consumption was 2.7GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 89.2s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.6s, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15418 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15418 mSDsluCounter, 17809 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15177 mSDsCounter, 205 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2641 IncrementalHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 205 mSolverCounterUnsat, 3287 mSDtfsCounter, 2641 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1758 GetRequests, 1453 SyntacticMatches, 12 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1921 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133330occurred in iteration=11, InterpolantAutomatonStates: 218, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.7s AutomataMinimizationTime, 16 MinimizatonAttempts, 723091 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 2309 NumberOfCodeBlocks, 2201 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2824 ConstructedInterpolants, 0 QuantifiedInterpolants, 5886 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2049 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 33 InterpolantComputations, 10 PerfectInterpolantSequences, 351/699 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-16 11:11:51,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...