/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-queue-add-3-nl.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:09:25,540 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:09:25,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:09:25,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:09:25,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:09:25,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:09:25,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:09:25,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:09:25,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:09:25,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:09:25,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:09:25,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:09:25,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:09:25,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:09:25,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:09:25,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:09:25,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:09:25,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:09:25,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:09:25,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:09:25,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:09:25,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:09:25,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:09:25,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:09:25,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:09:25,622 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:09:25,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:09:25,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:09:25,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:09:25,625 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:09:25,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:09:25,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:09:25,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:09:25,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:09:25,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:09:25,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:09:25,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:09:25,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:09:25,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:09:25,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:09:25,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:09:25,633 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 11:09:25,665 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:09:25,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:09:25,666 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-09-16 11:09:25,666 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-09-16 11:09:25,667 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:09:25,667 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:09:25,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:09:25,668 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:09:25,668 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:09:25,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:09:25,669 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:09:25,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:09:25,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:09:25,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:09:25,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:09:25,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:09:25,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:09:25,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:09:25,671 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:09:25,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-09-16 11:09:25,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:09:25,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:09:25,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:09:25,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:09:25,993 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:09:25,993 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:09:25,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-09-16 11:09:26,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a3c2c78/42a8c010226948259bf24f1fb5205994/FLAGf5d532dae [2022-09-16 11:09:26,538 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:09:26,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-queue-add-3-nl.wvr.c [2022-09-16 11:09:26,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a3c2c78/42a8c010226948259bf24f1fb5205994/FLAGf5d532dae [2022-09-16 11:09:27,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5a3c2c78/42a8c010226948259bf24f1fb5205994 [2022-09-16 11:09:27,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:09:27,030 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:09:27,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:09:27,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:09:27,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:09:27,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4862e972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27, skipping insertion in model container [2022-09-16 11:09:27,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:09:27,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:09:27,265 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-queue-add-3-nl.wvr.c[3615,3628] [2022-09-16 11:09:27,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:09:27,277 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:09:27,301 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-queue-add-3-nl.wvr.c[3615,3628] [2022-09-16 11:09:27,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:09:27,316 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:09:27,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27 WrapperNode [2022-09-16 11:09:27,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:09:27,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:09:27,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:09:27,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:09:27,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,395 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 277 [2022-09-16 11:09:27,395 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:09:27,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:09:27,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:09:27,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:09:27,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,429 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:09:27,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:09:27,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:09:27,430 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:09:27,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (1/1) ... [2022-09-16 11:09:27,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:09:27,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:27,471 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 11:09:27,473 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 11:09:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:09:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:09:27,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:09:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:09:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:09:27,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:09:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:09:27,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:09:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:09:27,502 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:09:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:09:27,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:09:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:09:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:09:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:09:27,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:09:27,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:09:27,504 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 11:09:27,673 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:09:27,675 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:09:28,148 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:09:28,302 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:09:28,302 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-16 11:09:28,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:09:28 BoogieIcfgContainer [2022-09-16 11:09:28,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:09:28,307 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:09:28,307 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:09:28,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:09:28,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:09:27" (1/3) ... [2022-09-16 11:09:28,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad983f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:09:28, skipping insertion in model container [2022-09-16 11:09:28,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:09:27" (2/3) ... [2022-09-16 11:09:28,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad983f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:09:28, skipping insertion in model container [2022-09-16 11:09:28,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:09:28" (3/3) ... [2022-09-16 11:09:28,316 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2022-09-16 11:09:28,324 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-09-16 11:09:28,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:09:28,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-09-16 11:09:28,333 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:09:28,416 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:09:28,454 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 244 places, 252 transitions, 528 flow [2022-09-16 11:09:29,551 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 27638 states, 27390 states have (on average 3.9349397590361446) internal successors, (107778), 27637 states have internal predecessors, (107778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:29,575 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:09:29,585 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;@5bd97e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:09:29,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-09-16 11:09:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 27638 states, 27390 states have (on average 3.9349397590361446) internal successors, (107778), 27637 states have internal predecessors, (107778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-09-16 11:09:29,798 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:29,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:29,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:29,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:29,804 INFO L85 PathProgramCache]: Analyzing trace with hash -688142939, now seen corresponding path program 1 times [2022-09-16 11:09:29,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:29,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307464313] [2022-09-16 11:09:29,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:29,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:29,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:30,076 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 11:09:30,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:30,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307464313] [2022-09-16 11:09:30,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307464313] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:30,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:30,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:30,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178064135] [2022-09-16 11:09:30,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:30,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:30,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:30,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:30,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:30,187 INFO L87 Difference]: Start difference. First operand has 27638 states, 27390 states have (on average 3.9349397590361446) internal successors, (107778), 27637 states have internal predecessors, (107778), 0 states have call successors, (0), 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 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:31,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:31,284 INFO L93 Difference]: Finished difference Result 42049 states and 152825 transitions. [2022-09-16 11:09:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-09-16 11:09:31,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:31,796 INFO L225 Difference]: With dead ends: 42049 [2022-09-16 11:09:31,796 INFO L226 Difference]: Without dead ends: 42043 [2022-09-16 11:09:31,798 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 11:09:31,801 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 111 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:31,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 538 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42043 states. [2022-09-16 11:09:33,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42043 to 21081. [2022-09-16 11:09:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21081 states, 20978 states have (on average 3.64529507102679) internal successors, (76471), 21080 states have internal predecessors, (76471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:33,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21081 states to 21081 states and 76471 transitions. [2022-09-16 11:09:33,521 INFO L78 Accepts]: Start accepts. Automaton has 21081 states and 76471 transitions. Word has length 76 [2022-09-16 11:09:33,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:33,522 INFO L495 AbstractCegarLoop]: Abstraction has 21081 states and 76471 transitions. [2022-09-16 11:09:33,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:33,522 INFO L276 IsEmpty]: Start isEmpty. Operand 21081 states and 76471 transitions. [2022-09-16 11:09:33,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-09-16 11:09:33,526 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:33,526 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] [2022-09-16 11:09:33,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:09:33,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:33,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1157477657, now seen corresponding path program 1 times [2022-09-16 11:09:33,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:33,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605533913] [2022-09-16 11:09:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:33,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:33,681 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 11:09:33,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:33,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605533913] [2022-09-16 11:09:33,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605533913] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:33,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517696276] [2022-09-16 11:09:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:33,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:33,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:33,685 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 11:09:33,686 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 11:09:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:33,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:33,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:33,883 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 11:09:33,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:34,106 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 11:09:34,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517696276] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:34,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:34,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:09:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360527481] [2022-09-16 11:09:34,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:34,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:09:34,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:34,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:09:34,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:09:34,110 INFO L87 Difference]: Start difference. First operand 21081 states and 76471 transitions. Second operand has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:35,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:35,828 INFO L93 Difference]: Finished difference Result 104975 states and 381915 transitions. [2022-09-16 11:09:35,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:09:35,839 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-09-16 11:09:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:36,855 INFO L225 Difference]: With dead ends: 104975 [2022-09-16 11:09:36,855 INFO L226 Difference]: Without dead ends: 104975 [2022-09-16 11:09:36,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=304, Unknown=0, NotChecked=0, Total=462 [2022-09-16 11:09:36,857 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 785 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:36,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1027 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-09-16 11:09:37,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104975 states. [2022-09-16 11:09:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104975 to 21133. [2022-09-16 11:09:38,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21133 states, 21030 states have (on average 3.6392296718972896) internal successors, (76533), 21132 states have internal predecessors, (76533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21133 states to 21133 states and 76533 transitions. [2022-09-16 11:09:38,902 INFO L78 Accepts]: Start accepts. Automaton has 21133 states and 76533 transitions. Word has length 85 [2022-09-16 11:09:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:38,902 INFO L495 AbstractCegarLoop]: Abstraction has 21133 states and 76533 transitions. [2022-09-16 11:09:38,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.0) internal successors, (110), 12 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 21133 states and 76533 transitions. [2022-09-16 11:09:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-09-16 11:09:38,904 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:38,904 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] [2022-09-16 11:09:38,929 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 11:09:39,119 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 11:09:39,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:39,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:39,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1522069764, now seen corresponding path program 1 times [2022-09-16 11:09:39,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:39,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702298570] [2022-09-16 11:09:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:39,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:39,234 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 11:09:39,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:39,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702298570] [2022-09-16 11:09:39,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702298570] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:39,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909197171] [2022-09-16 11:09:39,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:39,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:39,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:39,240 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 11:09:39,242 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 11:09:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:39,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:39,390 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 11:09:39,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:39,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909197171] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:39,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:39,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:09:39,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331758772] [2022-09-16 11:09:39,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:39,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:39,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:09:39,394 INFO L87 Difference]: Start difference. First operand 21133 states and 76533 transitions. Second operand has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:40,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:40,056 INFO L93 Difference]: Finished difference Result 42089 states and 152871 transitions. [2022-09-16 11:09:40,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:40,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2022-09-16 11:09:40,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:40,462 INFO L225 Difference]: With dead ends: 42089 [2022-09-16 11:09:40,463 INFO L226 Difference]: Without dead ends: 42089 [2022-09-16 11:09:40,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 84 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 11:09:40,464 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 223 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:40,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1014 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:09:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42089 states. [2022-09-16 11:09:41,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42089 to 21131. [2022-09-16 11:09:41,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21131 states, 21030 states have (on average 3.638944365192582) internal successors, (76527), 21130 states have internal predecessors, (76527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:41,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21131 states to 21131 states and 76527 transitions. [2022-09-16 11:09:41,439 INFO L78 Accepts]: Start accepts. Automaton has 21131 states and 76527 transitions. Word has length 86 [2022-09-16 11:09:41,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:41,440 INFO L495 AbstractCegarLoop]: Abstraction has 21131 states and 76527 transitions. [2022-09-16 11:09:41,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.2) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:41,440 INFO L276 IsEmpty]: Start isEmpty. Operand 21131 states and 76527 transitions. [2022-09-16 11:09:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-09-16 11:09:41,449 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:41,449 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] [2022-09-16 11:09:41,482 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 11:09:41,663 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 11:09:41,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:41,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash -97490267, now seen corresponding path program 2 times [2022-09-16 11:09:41,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:41,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323514791] [2022-09-16 11:09:41,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:41,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:41,844 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 11:09:41,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:41,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323514791] [2022-09-16 11:09:41,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323514791] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:41,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774904985] [2022-09-16 11:09:41,849 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:09:41,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:41,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:41,853 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 11:09:41,855 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 11:09:41,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:09:41,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:09:41,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:09:41,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:42,116 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 11:09:42,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:42,263 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 11:09:42,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774904985] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:42,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:42,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:09:42,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152212436] [2022-09-16 11:09:42,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:42,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:09:42,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:42,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:09:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:09:42,267 INFO L87 Difference]: Start difference. First operand 21131 states and 76527 transitions. Second operand has 18 states, 17 states have (on average 9.529411764705882) internal successors, (162), 18 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:44,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:44,651 INFO L93 Difference]: Finished difference Result 123412 states and 448464 transitions. [2022-09-16 11:09:44,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:09:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 9.529411764705882) internal successors, (162), 18 states have internal predecessors, (162), 0 states have call successors, (0), 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 112 [2022-09-16 11:09:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:45,691 INFO L225 Difference]: With dead ends: 123412 [2022-09-16 11:09:45,692 INFO L226 Difference]: Without dead ends: 123160 [2022-09-16 11:09:45,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 213 SyntacticMatches, 5 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=991, Invalid=3041, Unknown=0, NotChecked=0, Total=4032 [2022-09-16 11:09:45,693 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 2905 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2905 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:45,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2905 Valid, 1455 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:09:45,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123160 states. [2022-09-16 11:09:47,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123160 to 17722. [2022-09-16 11:09:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17722 states, 17674 states have (on average 3.6248161140658595) internal successors, (64065), 17721 states have internal predecessors, (64065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17722 states to 17722 states and 64065 transitions. [2022-09-16 11:09:47,784 INFO L78 Accepts]: Start accepts. Automaton has 17722 states and 64065 transitions. Word has length 112 [2022-09-16 11:09:47,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:47,785 INFO L495 AbstractCegarLoop]: Abstraction has 17722 states and 64065 transitions. [2022-09-16 11:09:47,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 9.529411764705882) internal successors, (162), 18 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 17722 states and 64065 transitions. [2022-09-16 11:09:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-09-16 11:09:47,786 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:47,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:47,803 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 11:09:47,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:47,989 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:47,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:47,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1256211469, now seen corresponding path program 1 times [2022-09-16 11:09:47,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:47,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160604612] [2022-09-16 11:09:47,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:47,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:48,050 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 11:09:48,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:48,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160604612] [2022-09-16 11:09:48,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160604612] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:48,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:48,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:09:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167883750] [2022-09-16 11:09:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:48,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:09:48,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:48,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:09:48,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:09:48,052 INFO L87 Difference]: Start difference. First operand 17722 states and 64065 transitions. Second operand has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:48,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:48,563 INFO L93 Difference]: Finished difference Result 32077 states and 116241 transitions. [2022-09-16 11:09:48,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:09:48,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 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 119 [2022-09-16 11:09:48,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:48,709 INFO L225 Difference]: With dead ends: 32077 [2022-09-16 11:09:48,709 INFO L226 Difference]: Without dead ends: 32077 [2022-09-16 11:09:48,709 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 11:09:48,710 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 154 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:48,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 700 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:48,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32077 states. [2022-09-16 11:09:49,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32077 to 24094. [2022-09-16 11:09:49,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24094 states, 24046 states have (on average 3.6800715295683273) internal successors, (88491), 24093 states have internal predecessors, (88491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:49,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24094 states to 24094 states and 88491 transitions. [2022-09-16 11:09:49,594 INFO L78 Accepts]: Start accepts. Automaton has 24094 states and 88491 transitions. Word has length 119 [2022-09-16 11:09:49,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:49,594 INFO L495 AbstractCegarLoop]: Abstraction has 24094 states and 88491 transitions. [2022-09-16 11:09:49,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 24094 states and 88491 transitions. [2022-09-16 11:09:49,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-09-16 11:09:49,596 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:49,596 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:49,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:09:49,597 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:49,597 INFO L85 PathProgramCache]: Analyzing trace with hash -710039529, now seen corresponding path program 1 times [2022-09-16 11:09:49,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:49,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162635644] [2022-09-16 11:09:49,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:49,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:49,692 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 11:09:49,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:49,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162635644] [2022-09-16 11:09:49,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162635644] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:49,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:49,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-16 11:09:49,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895647700] [2022-09-16 11:09:49,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:49,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:49,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:49,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:49,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-09-16 11:09:49,694 INFO L87 Difference]: Start difference. First operand 24094 states and 88491 transitions. Second operand has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:50,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:50,331 INFO L93 Difference]: Finished difference Result 26721 states and 96695 transitions. [2022-09-16 11:09:50,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:09:50,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-09-16 11:09:50,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:50,492 INFO L225 Difference]: With dead ends: 26721 [2022-09-16 11:09:50,493 INFO L226 Difference]: Without dead ends: 26081 [2022-09-16 11:09:50,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-09-16 11:09:50,494 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 454 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:50,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 583 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:50,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26081 states. [2022-09-16 11:09:51,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26081 to 26081. [2022-09-16 11:09:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26081 states, 26031 states have (on average 3.635127348161807) internal successors, (94626), 26080 states have internal predecessors, (94626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:51,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26081 states to 26081 states and 94626 transitions. [2022-09-16 11:09:51,444 INFO L78 Accepts]: Start accepts. Automaton has 26081 states and 94626 transitions. Word has length 124 [2022-09-16 11:09:51,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:51,444 INFO L495 AbstractCegarLoop]: Abstraction has 26081 states and 94626 transitions. [2022-09-16 11:09:51,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.8) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:51,445 INFO L276 IsEmpty]: Start isEmpty. Operand 26081 states and 94626 transitions. [2022-09-16 11:09:51,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-09-16 11:09:51,446 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:51,446 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:51,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:09:51,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:51,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:51,447 INFO L85 PathProgramCache]: Analyzing trace with hash -284393048, now seen corresponding path program 1 times [2022-09-16 11:09:51,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:51,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616329789] [2022-09-16 11:09:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:51,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:51,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616329789] [2022-09-16 11:09:51,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616329789] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:51,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506360825] [2022-09-16 11:09:51,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:51,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:51,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:51,498 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 11:09:51,500 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 11:09:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:51,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:09:51,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-16 11:09:51,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:09:51,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506360825] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:51,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:09:51,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 10 [2022-09-16 11:09:51,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187743650] [2022-09-16 11:09:51,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:51,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:09:51,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:51,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:09:51,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:09:51,698 INFO L87 Difference]: Start difference. First operand 26081 states and 94626 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:52,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:52,273 INFO L93 Difference]: Finished difference Result 27568 states and 98925 transitions. [2022-09-16 11:09:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-16 11:09:52,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 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 127 [2022-09-16 11:09:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:52,399 INFO L225 Difference]: With dead ends: 27568 [2022-09-16 11:09:52,399 INFO L226 Difference]: Without dead ends: 27079 [2022-09-16 11:09:52,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-09-16 11:09:52,400 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 151 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:52,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 787 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:09:52,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27079 states. [2022-09-16 11:09:53,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27079 to 27071. [2022-09-16 11:09:53,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27071 states, 27015 states have (on average 3.6096242828058487) internal successors, (97514), 27070 states have internal predecessors, (97514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:53,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27071 states to 27071 states and 97514 transitions. [2022-09-16 11:09:53,199 INFO L78 Accepts]: Start accepts. Automaton has 27071 states and 97514 transitions. Word has length 127 [2022-09-16 11:09:53,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:53,199 INFO L495 AbstractCegarLoop]: Abstraction has 27071 states and 97514 transitions. [2022-09-16 11:09:53,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:53,199 INFO L276 IsEmpty]: Start isEmpty. Operand 27071 states and 97514 transitions. [2022-09-16 11:09:53,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-09-16 11:09:53,201 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:53,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:53,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:09:53,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:53,402 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:53,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:53,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1504716212, now seen corresponding path program 1 times [2022-09-16 11:09:53,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:53,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706978386] [2022-09-16 11:09:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:53,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:53,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:09:53,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:53,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706978386] [2022-09-16 11:09:53,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706978386] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:09:53,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925399679] [2022-09-16 11:09:53,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:53,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:53,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:09:53,479 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:09:53,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:09:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:53,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:09:53,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:09:53,823 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:53,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:09:54,152 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:09:54,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925399679] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:09:54,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:09:54,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-09-16 11:09:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568226155] [2022-09-16 11:09:54,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:09:54,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:09:54,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:54,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:09:54,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:09:54,154 INFO L87 Difference]: Start difference. First operand 27071 states and 97514 transitions. Second operand has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:55,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:55,565 INFO L93 Difference]: Finished difference Result 72252 states and 256106 transitions. [2022-09-16 11:09:55,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-09-16 11:09:55,566 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2022-09-16 11:09:55,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:56,216 INFO L225 Difference]: With dead ends: 72252 [2022-09-16 11:09:56,216 INFO L226 Difference]: Without dead ends: 70565 [2022-09-16 11:09:56,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 258 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 305 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=1173, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:09:56,217 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 2042 mSDsluCounter, 3156 mSDsCounter, 0 mSdLazyCounter, 694 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3151 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:56,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2042 Valid, 3151 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 694 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:09:56,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70565 states. [2022-09-16 11:09:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70565 to 46629. [2022-09-16 11:09:57,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46629 states, 46543 states have (on average 3.6269686096727756) internal successors, (168810), 46628 states have internal predecessors, (168810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46629 states to 46629 states and 168810 transitions. [2022-09-16 11:09:58,009 INFO L78 Accepts]: Start accepts. Automaton has 46629 states and 168810 transitions. Word has length 136 [2022-09-16 11:09:58,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:09:58,009 INFO L495 AbstractCegarLoop]: Abstraction has 46629 states and 168810 transitions. [2022-09-16 11:09:58,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:58,009 INFO L276 IsEmpty]: Start isEmpty. Operand 46629 states and 168810 transitions. [2022-09-16 11:09:58,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-09-16 11:09:58,011 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:09:58,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:09:58,034 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 11:09:58,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:09:58,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:09:58,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:09:58,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1188161977, now seen corresponding path program 1 times [2022-09-16 11:09:58,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:09:58,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846403798] [2022-09-16 11:09:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:09:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:09:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:09:58,346 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 11:09:58,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:09:58,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846403798] [2022-09-16 11:09:58,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846403798] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:09:58,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:09:58,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:09:58,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727045915] [2022-09-16 11:09:58,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:09:58,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:09:58,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:09:58,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:09:58,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:09:58,349 INFO L87 Difference]: Start difference. First operand 46629 states and 168810 transitions. Second operand has 3 states, 2 states have (on average 69.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:09:59,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:09:59,039 INFO L93 Difference]: Finished difference Result 45439 states and 162682 transitions. [2022-09-16 11:09:59,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:09:59,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 69.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 138 [2022-09-16 11:09:59,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:09:59,283 INFO L225 Difference]: With dead ends: 45439 [2022-09-16 11:09:59,283 INFO L226 Difference]: Without dead ends: 45048 [2022-09-16 11:09:59,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:09:59,284 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 37 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:09:59,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 283 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:09:59,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45048 states. [2022-09-16 11:10:00,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45048 to 45048. [2022-09-16 11:10:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45048 states, 44963 states have (on average 3.5943108778328847) internal successors, (161611), 45047 states have internal predecessors, (161611), 0 states have call successors, (0), 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 11:10:00,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45048 states to 45048 states and 161611 transitions. [2022-09-16 11:10:00,832 INFO L78 Accepts]: Start accepts. Automaton has 45048 states and 161611 transitions. Word has length 138 [2022-09-16 11:10:00,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:00,833 INFO L495 AbstractCegarLoop]: Abstraction has 45048 states and 161611 transitions. [2022-09-16 11:10:00,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 69.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 11:10:00,833 INFO L276 IsEmpty]: Start isEmpty. Operand 45048 states and 161611 transitions. [2022-09-16 11:10:00,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-09-16 11:10:00,850 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:00,850 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:00,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:10:00,850 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:00,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:00,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1920625647, now seen corresponding path program 1 times [2022-09-16 11:10:00,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:00,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185814605] [2022-09-16 11:10:00,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:00,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:00,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:00,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:00,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:00,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185814605] [2022-09-16 11:10:00,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185814605] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:00,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674238652] [2022-09-16 11:10:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:00,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:00,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:00,976 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 11:10:00,977 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 11:10:01,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:01,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:01,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:01,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:01,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674238652] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:01,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:01,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-09-16 11:10:01,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504803226] [2022-09-16 11:10:01,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:01,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:10:01,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:01,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:10:01,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:10:01,221 INFO L87 Difference]: Start difference. First operand 45048 states and 161611 transitions. Second operand has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:01,474 INFO L93 Difference]: Finished difference Result 39489 states and 141212 transitions. [2022-09-16 11:10:01,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-16 11:10:01,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 142 [2022-09-16 11:10:01,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:01,630 INFO L225 Difference]: With dead ends: 39489 [2022-09-16 11:10:01,631 INFO L226 Difference]: Without dead ends: 39489 [2022-09-16 11:10:01,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-09-16 11:10:01,632 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 80 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:01,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 384 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:02,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39489 states. [2022-09-16 11:10:02,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39489 to 39489. [2022-09-16 11:10:02,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39489 states, 39444 states have (on average 3.5800628739478753) internal successors, (141212), 39488 states have internal predecessors, (141212), 0 states have call successors, (0), 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 11:10:03,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39489 states to 39489 states and 141212 transitions. [2022-09-16 11:10:03,128 INFO L78 Accepts]: Start accepts. Automaton has 39489 states and 141212 transitions. Word has length 142 [2022-09-16 11:10:03,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:03,128 INFO L495 AbstractCegarLoop]: Abstraction has 39489 states and 141212 transitions. [2022-09-16 11:10:03,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 4 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:03,129 INFO L276 IsEmpty]: Start isEmpty. Operand 39489 states and 141212 transitions. [2022-09-16 11:10:03,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-09-16 11:10:03,131 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:03,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:03,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:03,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:03,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:03,340 INFO L85 PathProgramCache]: Analyzing trace with hash -590146177, now seen corresponding path program 1 times [2022-09-16 11:10:03,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:03,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442015595] [2022-09-16 11:10:03,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:03,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:03,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:03,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442015595] [2022-09-16 11:10:03,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442015595] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:03,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:10:03,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:10:03,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288134801] [2022-09-16 11:10:03,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:03,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:10:03,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:10:03,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:10:03,421 INFO L87 Difference]: Start difference. First operand 39489 states and 141212 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 11:10:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:03,982 INFO L93 Difference]: Finished difference Result 36241 states and 128313 transitions. [2022-09-16 11:10:03,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:10:03,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-09-16 11:10:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:04,135 INFO L225 Difference]: With dead ends: 36241 [2022-09-16 11:10:04,135 INFO L226 Difference]: Without dead ends: 36241 [2022-09-16 11:10:04,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:10:04,136 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:04,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 285 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-09-16 11:10:04,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36241 states. [2022-09-16 11:10:04,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36241 to 36147. [2022-09-16 11:10:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36147 states, 36102 states have (on average 3.5462578250512435) internal successors, (128027), 36146 states have internal predecessors, (128027), 0 states have call successors, (0), 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 11:10:05,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36147 states to 36147 states and 128027 transitions. [2022-09-16 11:10:05,200 INFO L78 Accepts]: Start accepts. Automaton has 36147 states and 128027 transitions. Word has length 143 [2022-09-16 11:10:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:05,200 INFO L495 AbstractCegarLoop]: Abstraction has 36147 states and 128027 transitions. [2022-09-16 11:10:05,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 11:10:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 36147 states and 128027 transitions. [2022-09-16 11:10:05,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:05,203 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:05,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:05,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:10:05,204 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:05,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1208347641, now seen corresponding path program 1 times [2022-09-16 11:10:05,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:05,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542752842] [2022-09-16 11:10:05,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:05,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:05,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:05,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542752842] [2022-09-16 11:10:05,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542752842] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:05,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316480084] [2022-09-16 11:10:05,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:05,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:05,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:05,644 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 11:10:05,654 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 11:10:05,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:05,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:10:05,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:06,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:10:07,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:07,170 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:10:07,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:07,275 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:10:07,460 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:07,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:10:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:07,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:08,450 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:08,451 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-09-16 11:10:08,464 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:08,464 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-09-16 11:10:08,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-09-16 11:10:08,476 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-09-16 11:10:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:09,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316480084] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:09,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:09,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 54 [2022-09-16 11:10:09,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48056664] [2022-09-16 11:10:09,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:09,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-09-16 11:10:09,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:09,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-09-16 11:10:09,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2742, Unknown=47, NotChecked=0, Total=2970 [2022-09-16 11:10:09,736 INFO L87 Difference]: Start difference. First operand 36147 states and 128027 transitions. Second operand has 55 states, 54 states have (on average 7.111111111111111) internal successors, (384), 55 states have internal predecessors, (384), 0 states have call successors, (0), 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 11:10:13,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:13,981 INFO L93 Difference]: Finished difference Result 43454 states and 153977 transitions. [2022-09-16 11:10:13,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-09-16 11:10:13,982 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 7.111111111111111) internal successors, (384), 55 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:13,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:14,151 INFO L225 Difference]: With dead ends: 43454 [2022-09-16 11:10:14,152 INFO L226 Difference]: Without dead ends: 43454 [2022-09-16 11:10:14,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2906 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1212, Invalid=11617, Unknown=53, NotChecked=0, Total=12882 [2022-09-16 11:10:14,154 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 849 mSDsluCounter, 6685 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 6710 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 699 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:14,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 6710 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 980 Invalid, 0 Unknown, 699 Unchecked, 0.6s Time] [2022-09-16 11:10:14,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43454 states. [2022-09-16 11:10:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43454 to 36597. [2022-09-16 11:10:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36597 states, 36552 states have (on average 3.5351553950536223) internal successors, (129217), 36596 states have internal predecessors, (129217), 0 states have call successors, (0), 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 11:10:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36597 states to 36597 states and 129217 transitions. [2022-09-16 11:10:15,506 INFO L78 Accepts]: Start accepts. Automaton has 36597 states and 129217 transitions. Word has length 146 [2022-09-16 11:10:15,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:15,507 INFO L495 AbstractCegarLoop]: Abstraction has 36597 states and 129217 transitions. [2022-09-16 11:10:15,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 7.111111111111111) internal successors, (384), 55 states have internal predecessors, (384), 0 states have call successors, (0), 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 11:10:15,507 INFO L276 IsEmpty]: Start isEmpty. Operand 36597 states and 129217 transitions. [2022-09-16 11:10:15,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:15,510 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:15,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:15,537 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 11:10:15,727 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 11:10:15,728 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:15,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:15,728 INFO L85 PathProgramCache]: Analyzing trace with hash 573338817, now seen corresponding path program 2 times [2022-09-16 11:10:15,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:15,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986694374] [2022-09-16 11:10:15,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:15,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:16,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:16,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:16,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986694374] [2022-09-16 11:10:16,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986694374] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:16,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916439412] [2022-09-16 11:10:16,785 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:16,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:16,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:16,788 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 11:10:16,795 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 11:10:16,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:16,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:16,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 10 conjunts are in the unsatisfiable core [2022-09-16 11:10:16,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:17,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:10:17,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:17,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:17,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916439412] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:17,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:17,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25] total 29 [2022-09-16 11:10:17,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366828117] [2022-09-16 11:10:17,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:17,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:17,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:17,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:17,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:10:17,146 INFO L87 Difference]: Start difference. First operand 36597 states and 129217 transitions. Second operand has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:17,802 INFO L93 Difference]: Finished difference Result 39949 states and 140355 transitions. [2022-09-16 11:10:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:17,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:17,958 INFO L225 Difference]: With dead ends: 39949 [2022-09-16 11:10:17,958 INFO L226 Difference]: Without dead ends: 39949 [2022-09-16 11:10:17,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:10:17,959 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 89 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:17,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1020 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:18,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39949 states. [2022-09-16 11:10:18,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39949 to 37187. [2022-09-16 11:10:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37187 states, 37142 states have (on average 3.5300737709331753) internal successors, (131114), 37186 states have internal predecessors, (131114), 0 states have call successors, (0), 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 11:10:19,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37187 states to 37187 states and 131114 transitions. [2022-09-16 11:10:19,064 INFO L78 Accepts]: Start accepts. Automaton has 37187 states and 131114 transitions. Word has length 146 [2022-09-16 11:10:19,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:19,065 INFO L495 AbstractCegarLoop]: Abstraction has 37187 states and 131114 transitions. [2022-09-16 11:10:19,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:19,065 INFO L276 IsEmpty]: Start isEmpty. Operand 37187 states and 131114 transitions. [2022-09-16 11:10:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:19,068 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:19,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:19,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-09-16 11:10:19,268 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 11:10:19,269 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:19,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:19,270 INFO L85 PathProgramCache]: Analyzing trace with hash 334356887, now seen corresponding path program 1 times [2022-09-16 11:10:19,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:19,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218132687] [2022-09-16 11:10:19,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:19,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:19,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:20,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:20,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:20,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218132687] [2022-09-16 11:10:20,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218132687] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:20,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958747070] [2022-09-16 11:10:20,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:20,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:20,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:20,192 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 11:10:20,217 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 11:10:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:20,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:10:20,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:20,745 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:10:21,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:21,224 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:10:21,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:21,312 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:10:21,465 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:21,466 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:10:21,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:21,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:22,444 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:22,444 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-09-16 11:10:22,453 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:22,453 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-09-16 11:10:22,458 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-09-16 11:10:22,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-09-16 11:10:23,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:23,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958747070] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:23,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:23,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 54 [2022-09-16 11:10:23,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750757309] [2022-09-16 11:10:23,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-09-16 11:10:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:23,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-09-16 11:10:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=2742, Unknown=37, NotChecked=0, Total=2970 [2022-09-16 11:10:23,431 INFO L87 Difference]: Start difference. First operand 37187 states and 131114 transitions. Second operand has 55 states, 54 states have (on average 7.111111111111111) internal successors, (384), 55 states have internal predecessors, (384), 0 states have call successors, (0), 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 11:10:28,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:28,636 INFO L93 Difference]: Finished difference Result 75926 states and 270186 transitions. [2022-09-16 11:10:28,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-09-16 11:10:28,636 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 7.111111111111111) internal successors, (384), 55 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:28,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:28,975 INFO L225 Difference]: With dead ends: 75926 [2022-09-16 11:10:28,976 INFO L226 Difference]: Without dead ends: 75926 [2022-09-16 11:10:28,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3624 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1259, Invalid=12741, Unknown=42, NotChecked=0, Total=14042 [2022-09-16 11:10:28,979 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1329 mSDsluCounter, 7578 mSDsCounter, 0 mSdLazyCounter, 1056 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 7552 SdHoareTripleChecker+Invalid, 2469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1390 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:28,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 7552 Invalid, 2469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1056 Invalid, 0 Unknown, 1390 Unchecked, 0.5s Time] [2022-09-16 11:10:29,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75926 states. [2022-09-16 11:10:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75926 to 38495. [2022-09-16 11:10:30,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38495 states, 38450 states have (on average 3.510819245773732) internal successors, (134991), 38494 states have internal predecessors, (134991), 0 states have call successors, (0), 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 11:10:30,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38495 states to 38495 states and 134991 transitions. [2022-09-16 11:10:30,691 INFO L78 Accepts]: Start accepts. Automaton has 38495 states and 134991 transitions. Word has length 146 [2022-09-16 11:10:30,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:30,691 INFO L495 AbstractCegarLoop]: Abstraction has 38495 states and 134991 transitions. [2022-09-16 11:10:30,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 7.111111111111111) internal successors, (384), 55 states have internal predecessors, (384), 0 states have call successors, (0), 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 11:10:30,691 INFO L276 IsEmpty]: Start isEmpty. Operand 38495 states and 134991 transitions. [2022-09-16 11:10:30,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:30,695 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:30,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:30,714 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 11:10:30,899 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 11:10:30,899 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:30,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:30,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1231345083, now seen corresponding path program 2 times [2022-09-16 11:10:30,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:30,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472818009] [2022-09-16 11:10:30,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:30,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:10:31,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:31,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472818009] [2022-09-16 11:10:31,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472818009] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:31,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74601296] [2022-09-16 11:10:31,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:31,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:31,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:31,766 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 11:10:31,767 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 11:10:31,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:31,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:31,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:32,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:32,322 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:10:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:32,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:32,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74601296] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:32,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:32,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [25] total 29 [2022-09-16 11:10:32,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867153167] [2022-09-16 11:10:32,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:32,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:32,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:32,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:10:32,349 INFO L87 Difference]: Start difference. First operand 38495 states and 134991 transitions. Second operand has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:32,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:32,771 INFO L93 Difference]: Finished difference Result 51075 states and 179484 transitions. [2022-09-16 11:10:32,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:32,772 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:32,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:32,991 INFO L225 Difference]: With dead ends: 51075 [2022-09-16 11:10:32,992 INFO L226 Difference]: Without dead ends: 51075 [2022-09-16 11:10:32,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2022-09-16 11:10:32,993 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 104 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:32,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1083 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:33,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51075 states. [2022-09-16 11:10:34,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51075 to 42463. [2022-09-16 11:10:34,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42463 states, 42418 states have (on average 3.514286387854213) internal successors, (149069), 42462 states have internal predecessors, (149069), 0 states have call successors, (0), 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 11:10:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42463 states to 42463 states and 149069 transitions. [2022-09-16 11:10:34,543 INFO L78 Accepts]: Start accepts. Automaton has 42463 states and 149069 transitions. Word has length 146 [2022-09-16 11:10:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:34,543 INFO L495 AbstractCegarLoop]: Abstraction has 42463 states and 149069 transitions. [2022-09-16 11:10:34,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.2) internal successors, (146), 6 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 42463 states and 149069 transitions. [2022-09-16 11:10:34,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:34,548 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:34,548 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:34,576 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 11:10:34,763 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 11:10:34,764 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:34,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:34,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1063715555, now seen corresponding path program 3 times [2022-09-16 11:10:34,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:34,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607914050] [2022-09-16 11:10:34,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:34,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:34,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:35,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607914050] [2022-09-16 11:10:35,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607914050] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:35,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132864795] [2022-09-16 11:10:35,270 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:10:35,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:35,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:35,272 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 11:10:35,274 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 11:10:35,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:10:35,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:35,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:10:35,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:36,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:36,153 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:10:36,256 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:36,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:10:36,290 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:36,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:36,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132864795] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:36,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:36,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 27 [2022-09-16 11:10:36,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913120667] [2022-09-16 11:10:36,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:10:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:36,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:10:36,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:10:36,292 INFO L87 Difference]: Start difference. First operand 42463 states and 149069 transitions. Second operand has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:37,229 INFO L93 Difference]: Finished difference Result 52866 states and 183725 transitions. [2022-09-16 11:10:37,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:10:37,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:37,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:37,578 INFO L225 Difference]: With dead ends: 52866 [2022-09-16 11:10:37,578 INFO L226 Difference]: Without dead ends: 52866 [2022-09-16 11:10:37,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=1467, Unknown=0, NotChecked=0, Total=1640 [2022-09-16 11:10:37,580 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 472 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:37,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [472 Valid, 2033 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 266 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2022-09-16 11:10:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52866 states. [2022-09-16 11:10:38,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52866 to 42653. [2022-09-16 11:10:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42653 states, 42608 states have (on average 3.5139410439354113) internal successors, (149722), 42652 states have internal predecessors, (149722), 0 states have call successors, (0), 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 11:10:38,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42653 states to 42653 states and 149722 transitions. [2022-09-16 11:10:38,994 INFO L78 Accepts]: Start accepts. Automaton has 42653 states and 149722 transitions. Word has length 146 [2022-09-16 11:10:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:38,995 INFO L495 AbstractCegarLoop]: Abstraction has 42653 states and 149722 transitions. [2022-09-16 11:10:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:38,995 INFO L276 IsEmpty]: Start isEmpty. Operand 42653 states and 149722 transitions. [2022-09-16 11:10:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:38,999 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:38,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:39,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:39,202 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 11:10:39,202 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash -260194043, now seen corresponding path program 3 times [2022-09-16 11:10:39,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:39,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223959217] [2022-09-16 11:10:39,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:39,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:40,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:40,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223959217] [2022-09-16 11:10:40,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223959217] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:40,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282103999] [2022-09-16 11:10:40,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:10:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:40,060 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:40,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-09-16 11:10:40,177 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:10:40,177 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:40,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:10:40,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:40,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:40,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:10:40,882 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:40,882 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:10:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:40,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:40,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282103999] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:40,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:40,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 27 [2022-09-16 11:10:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853165786] [2022-09-16 11:10:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:10:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:10:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:10:40,912 INFO L87 Difference]: Start difference. First operand 42653 states and 149722 transitions. Second operand has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:41,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:41,991 INFO L93 Difference]: Finished difference Result 75996 states and 268625 transitions. [2022-09-16 11:10:41,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-09-16 11:10:41,991 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:41,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:42,365 INFO L225 Difference]: With dead ends: 75996 [2022-09-16 11:10:42,365 INFO L226 Difference]: Without dead ends: 75996 [2022-09-16 11:10:42,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 136 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=1702, Unknown=0, NotChecked=0, Total=1892 [2022-09-16 11:10:42,366 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 430 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 2534 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:42,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 2534 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 300 Invalid, 0 Unknown, 237 Unchecked, 0.1s Time] [2022-09-16 11:10:42,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75996 states. [2022-09-16 11:10:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75996 to 43163. [2022-09-16 11:10:44,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43163 states, 43118 states have (on average 3.522890672109096) internal successors, (151900), 43162 states have internal predecessors, (151900), 0 states have call successors, (0), 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 11:10:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43163 states to 43163 states and 151900 transitions. [2022-09-16 11:10:44,185 INFO L78 Accepts]: Start accepts. Automaton has 43163 states and 151900 transitions. Word has length 146 [2022-09-16 11:10:44,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:44,186 INFO L495 AbstractCegarLoop]: Abstraction has 43163 states and 151900 transitions. [2022-09-16 11:10:44,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.166666666666666) internal successors, (146), 13 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:10:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 43163 states and 151900 transitions. [2022-09-16 11:10:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-09-16 11:10:44,188 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:44,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:10:44,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:44,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-09-16 11:10:44,389 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 343120182, now seen corresponding path program 1 times [2022-09-16 11:10:44,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:44,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497818060] [2022-09-16 11:10:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:44,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:44,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:44,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497818060] [2022-09-16 11:10:44,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497818060] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:44,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698183215] [2022-09-16 11:10:44,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:44,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:44,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:44,434 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:44,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-09-16 11:10:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:44,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:10:44,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-09-16 11:10:44,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:44,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698183215] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:44,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:44,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:10:44,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992865314] [2022-09-16 11:10:44,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:44,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:44,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:44,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:44,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:10:44,584 INFO L87 Difference]: Start difference. First operand 43163 states and 151900 transitions. Second operand has 6 states, 5 states have (on average 27.4) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 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 11:10:45,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:45,425 INFO L93 Difference]: Finished difference Result 46588 states and 162978 transitions. [2022-09-16 11:10:45,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:10:45,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 27.4) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2022-09-16 11:10:45,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:45,769 INFO L225 Difference]: With dead ends: 46588 [2022-09-16 11:10:45,769 INFO L226 Difference]: Without dead ends: 46588 [2022-09-16 11:10:45,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 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 11:10:45,770 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 253 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:45,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 1034 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:45,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46588 states. [2022-09-16 11:10:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46588 to 41966. [2022-09-16 11:10:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41966 states, 41931 states have (on average 3.5213088168658033) internal successors, (147652), 41965 states have internal predecessors, (147652), 0 states have call successors, (0), 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 11:10:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41966 states to 41966 states and 147652 transitions. [2022-09-16 11:10:47,532 INFO L78 Accepts]: Start accepts. Automaton has 41966 states and 147652 transitions. Word has length 146 [2022-09-16 11:10:47,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:47,532 INFO L495 AbstractCegarLoop]: Abstraction has 41966 states and 147652 transitions. [2022-09-16 11:10:47,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 27.4) internal successors, (137), 6 states have internal predecessors, (137), 0 states have call successors, (0), 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 11:10:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 41966 states and 147652 transitions. [2022-09-16 11:10:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:10:47,535 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:47,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:47,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-09-16 11:10:47,748 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:47,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:47,748 INFO L85 PathProgramCache]: Analyzing trace with hash 593635024, now seen corresponding path program 1 times [2022-09-16 11:10:47,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:47,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848963805] [2022-09-16 11:10:47,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:47,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:47,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:48,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:48,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:48,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848963805] [2022-09-16 11:10:48,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848963805] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:48,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212458483] [2022-09-16 11:10:48,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:48,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:48,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:48,126 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:48,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-09-16 11:10:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:48,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:10:48,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:48,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:10:49,098 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:49,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:10:49,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:10:49,176 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:10:49,313 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:10:49,313 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-09-16 11:10:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:49,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:10:50,269 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:50,269 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-09-16 11:10:50,282 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:10:50,282 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-09-16 11:10:50,286 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-09-16 11:10:50,299 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-09-16 11:10:51,236 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:51,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212458483] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:10:51,237 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:10:51,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 20, 20] total 54 [2022-09-16 11:10:51,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394871562] [2022-09-16 11:10:51,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:10:51,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-09-16 11:10:51,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:51,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-09-16 11:10:51,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2750, Unknown=39, NotChecked=0, Total=2970 [2022-09-16 11:10:51,239 INFO L87 Difference]: Start difference. First operand 41966 states and 147652 transitions. Second operand has 55 states, 54 states have (on average 7.166666666666667) internal successors, (387), 55 states have internal predecessors, (387), 0 states have call successors, (0), 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 11:10:55,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:55,174 INFO L93 Difference]: Finished difference Result 46699 states and 162436 transitions. [2022-09-16 11:10:55,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-09-16 11:10:55,175 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 7.166666666666667) internal successors, (387), 55 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-09-16 11:10:55,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:55,398 INFO L225 Difference]: With dead ends: 46699 [2022-09-16 11:10:55,399 INFO L226 Difference]: Without dead ends: 46699 [2022-09-16 11:10:55,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2881 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1214, Invalid=11624, Unknown=44, NotChecked=0, Total=12882 [2022-09-16 11:10:55,402 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1010 mSDsluCounter, 7210 mSDsCounter, 0 mSdLazyCounter, 1043 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 7209 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 875 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:55,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 7209 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1043 Invalid, 0 Unknown, 875 Unchecked, 0.5s Time] [2022-09-16 11:10:55,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46699 states. [2022-09-16 11:10:56,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46699 to 42132. [2022-09-16 11:10:56,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42132 states, 42097 states have (on average 3.518279212295413) internal successors, (148109), 42131 states have internal predecessors, (148109), 0 states have call successors, (0), 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 11:10:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42132 states to 42132 states and 148109 transitions. [2022-09-16 11:10:56,590 INFO L78 Accepts]: Start accepts. Automaton has 42132 states and 148109 transitions. Word has length 147 [2022-09-16 11:10:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:56,590 INFO L495 AbstractCegarLoop]: Abstraction has 42132 states and 148109 transitions. [2022-09-16 11:10:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 7.166666666666667) internal successors, (387), 55 states have internal predecessors, (387), 0 states have call successors, (0), 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 11:10:56,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42132 states and 148109 transitions. [2022-09-16 11:10:56,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:10:56,593 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:56,593 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:10:56,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-09-16 11:10:56,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:56,794 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:10:56,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:10:56,795 INFO L85 PathProgramCache]: Analyzing trace with hash -263455568, now seen corresponding path program 2 times [2022-09-16 11:10:56,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:10:56,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956900765] [2022-09-16 11:10:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:10:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:10:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:10:57,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:10:57,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:10:57,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956900765] [2022-09-16 11:10:57,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956900765] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:10:57,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848988443] [2022-09-16 11:10:57,566 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:10:57,566 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:10:57,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:10:57,569 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:10:57,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-09-16 11:10:57,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:10:57,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:10:57,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:10:57,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:10:57,815 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:10:57,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:10:57,837 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:10:57,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848988443] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:10:57,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:10:57,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 25 [2022-09-16 11:10:57,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984412276] [2022-09-16 11:10:57,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:10:57,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:10:57,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:10:57,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:10:57,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:10:57,838 INFO L87 Difference]: Start difference. First operand 42132 states and 148109 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:10:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:10:58,190 INFO L93 Difference]: Finished difference Result 46350 states and 161963 transitions. [2022-09-16 11:10:58,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:10:58,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-09-16 11:10:58,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:10:58,349 INFO L225 Difference]: With dead ends: 46350 [2022-09-16 11:10:58,350 INFO L226 Difference]: Without dead ends: 46350 [2022-09-16 11:10:58,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:10:58,351 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 99 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 794 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:10:58,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 794 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:10:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46350 states. [2022-09-16 11:10:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46350 to 43642. [2022-09-16 11:10:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43642 states, 43607 states have (on average 3.5143669594331186) internal successors, (153251), 43641 states have internal predecessors, (153251), 0 states have call successors, (0), 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 11:10:59,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43642 states to 43642 states and 153251 transitions. [2022-09-16 11:10:59,865 INFO L78 Accepts]: Start accepts. Automaton has 43642 states and 153251 transitions. Word has length 147 [2022-09-16 11:10:59,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:10:59,865 INFO L495 AbstractCegarLoop]: Abstraction has 43642 states and 153251 transitions. [2022-09-16 11:10:59,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:10:59,865 INFO L276 IsEmpty]: Start isEmpty. Operand 43642 states and 153251 transitions. [2022-09-16 11:10:59,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:10:59,868 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:10:59,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:10:59,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:00,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:00,070 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash 483008972, now seen corresponding path program 1 times [2022-09-16 11:11:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:00,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516376459] [2022-09-16 11:11:00,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:00,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:00,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516376459] [2022-09-16 11:11:00,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516376459] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:00,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126570557] [2022-09-16 11:11:00,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:00,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:00,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:00,920 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:00,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-09-16 11:11:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:01,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:11:01,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:01,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:11:02,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:02,091 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:11:02,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:02,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-09-16 11:11:02,323 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:11:02,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-09-16 11:11:02,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:02,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:03,117 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:03,117 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-09-16 11:11:03,125 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:03,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-09-16 11:11:03,129 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-09-16 11:11:03,136 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-09-16 11:11:04,029 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:04,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126570557] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:04,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:04,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 20, 20] total 61 [2022-09-16 11:11:04,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499143835] [2022-09-16 11:11:04,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:04,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-09-16 11:11:04,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:04,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-09-16 11:11:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=221, Invalid=3527, Unknown=34, NotChecked=0, Total=3782 [2022-09-16 11:11:04,031 INFO L87 Difference]: Start difference. First operand 43642 states and 153251 transitions. Second operand has 62 states, 61 states have (on average 6.065573770491803) internal successors, (370), 62 states have internal predecessors, (370), 0 states have call successors, (0), 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 11:11:08,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:08,939 INFO L93 Difference]: Finished difference Result 49103 states and 170298 transitions. [2022-09-16 11:11:08,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-09-16 11:11:08,940 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 6.065573770491803) internal successors, (370), 62 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-09-16 11:11:08,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:09,134 INFO L225 Difference]: With dead ends: 49103 [2022-09-16 11:11:09,134 INFO L226 Difference]: Without dead ends: 49103 [2022-09-16 11:11:09,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 261 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3118 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1172, Invalid=12360, Unknown=40, NotChecked=0, Total=13572 [2022-09-16 11:11:09,135 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 764 mSDsluCounter, 8385 mSDsCounter, 0 mSdLazyCounter, 1765 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 8412 SdHoareTripleChecker+Invalid, 2214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 427 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:09,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 8412 Invalid, 2214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1765 Invalid, 0 Unknown, 427 Unchecked, 0.9s Time] [2022-09-16 11:11:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49103 states. [2022-09-16 11:11:10,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49103 to 44270. [2022-09-16 11:11:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44270 states, 44235 states have (on average 3.5072453939188426) internal successors, (155143), 44269 states have internal predecessors, (155143), 0 states have call successors, (0), 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 11:11:10,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44270 states to 44270 states and 155143 transitions. [2022-09-16 11:11:10,321 INFO L78 Accepts]: Start accepts. Automaton has 44270 states and 155143 transitions. Word has length 147 [2022-09-16 11:11:10,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:10,322 INFO L495 AbstractCegarLoop]: Abstraction has 44270 states and 155143 transitions. [2022-09-16 11:11:10,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 6.065573770491803) internal successors, (370), 62 states have internal predecessors, (370), 0 states have call successors, (0), 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 11:11:10,322 INFO L276 IsEmpty]: Start isEmpty. Operand 44270 states and 155143 transitions. [2022-09-16 11:11:10,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:11:10,326 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:10,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:10,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:10,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:10,551 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2092425326, now seen corresponding path program 2 times [2022-09-16 11:11:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:10,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284494534] [2022-09-16 11:11:10,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:10,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:11,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:11,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:11,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284494534] [2022-09-16 11:11:11,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284494534] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:11,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300520142] [2022-09-16 11:11:11,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:11,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:11,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:11,464 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:11,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-09-16 11:11:11,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:11,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:11,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 12 conjunts are in the unsatisfiable core [2022-09-16 11:11:11,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:11,717 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:11:11,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:11:11,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:11,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300520142] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:11,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:11,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [21] total 25 [2022-09-16 11:11:11,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372321407] [2022-09-16 11:11:11,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:11,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:11:11,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:11:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:11:11,740 INFO L87 Difference]: Start difference. First operand 44270 states and 155143 transitions. Second operand has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:11:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:12,591 INFO L93 Difference]: Finished difference Result 71539 states and 252004 transitions. [2022-09-16 11:11:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:11:12,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-09-16 11:11:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:12,944 INFO L225 Difference]: With dead ends: 71539 [2022-09-16 11:11:12,944 INFO L226 Difference]: Without dead ends: 71539 [2022-09-16 11:11:12,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=583, Unknown=0, NotChecked=0, Total=650 [2022-09-16 11:11:12,945 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 126 mSDsluCounter, 860 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:12,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 1088 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:11:13,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71539 states. [2022-09-16 11:11:14,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71539 to 60784. [2022-09-16 11:11:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60784 states, 60749 states have (on average 3.5666924558428947) internal successors, (216673), 60783 states have internal predecessors, (216673), 0 states have call successors, (0), 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 11:11:14,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60784 states to 60784 states and 216673 transitions. [2022-09-16 11:11:14,988 INFO L78 Accepts]: Start accepts. Automaton has 60784 states and 216673 transitions. Word has length 147 [2022-09-16 11:11:14,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:14,988 INFO L495 AbstractCegarLoop]: Abstraction has 60784 states and 216673 transitions. [2022-09-16 11:11:14,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 29.4) internal successors, (147), 6 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:11:14,988 INFO L276 IsEmpty]: Start isEmpty. Operand 60784 states and 216673 transitions. [2022-09-16 11:11:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:11:14,992 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:14,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:15,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:15,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:15,193 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:15,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1384555282, now seen corresponding path program 3 times [2022-09-16 11:11:15,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:15,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285915943] [2022-09-16 11:11:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:15,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285915943] [2022-09-16 11:11:16,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285915943] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:16,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122427882] [2022-09-16 11:11:16,072 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:11:16,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:16,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:16,074 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:16,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-09-16 11:11:16,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:11:16,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:16,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:11:16,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:16,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:16,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:11:16,627 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:11:16,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:11:16,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:16,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122427882] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:16,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:16,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [21] total 32 [2022-09-16 11:11:16,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594128307] [2022-09-16 11:11:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:16,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=970, Unknown=0, NotChecked=0, Total=1056 [2022-09-16 11:11:16,660 INFO L87 Difference]: Start difference. First operand 60784 states and 216673 transitions. Second operand has 13 states, 12 states have (on average 12.25) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:11:17,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:17,803 INFO L93 Difference]: Finished difference Result 64383 states and 228339 transitions. [2022-09-16 11:11:17,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:11:17,803 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.25) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-09-16 11:11:17,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:18,093 INFO L225 Difference]: With dead ends: 64383 [2022-09-16 11:11:18,094 INFO L226 Difference]: Without dead ends: 64383 [2022-09-16 11:11:18,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=195, Invalid=1967, Unknown=0, NotChecked=0, Total=2162 [2022-09-16 11:11:18,094 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 502 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:18,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1878 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:11:18,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64383 states. [2022-09-16 11:11:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64383 to 60740. [2022-09-16 11:11:19,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60740 states, 60705 states have (on average 3.5673503006342147) internal successors, (216556), 60739 states have internal predecessors, (216556), 0 states have call successors, (0), 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 11:11:20,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60740 states to 60740 states and 216556 transitions. [2022-09-16 11:11:20,023 INFO L78 Accepts]: Start accepts. Automaton has 60740 states and 216556 transitions. Word has length 147 [2022-09-16 11:11:20,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:20,023 INFO L495 AbstractCegarLoop]: Abstraction has 60740 states and 216556 transitions. [2022-09-16 11:11:20,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.25) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:11:20,024 INFO L276 IsEmpty]: Start isEmpty. Operand 60740 states and 216556 transitions. [2022-09-16 11:11:20,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-09-16 11:11:20,027 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:20,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:20,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:20,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:20,243 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:20,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:20,244 INFO L85 PathProgramCache]: Analyzing trace with hash 523920140, now seen corresponding path program 3 times [2022-09-16 11:11:20,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:20,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667125518] [2022-09-16 11:11:20,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:20,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:11:21,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667125518] [2022-09-16 11:11:21,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667125518] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105182581] [2022-09-16 11:11:21,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:11:21,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:21,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:21,384 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:21,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-09-16 11:11:21,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:11:21,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:21,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:11:21,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:21,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:21,933 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:11:21,994 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:11:22,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:11:22,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:22,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105182581] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:22,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:22,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [25] total 36 [2022-09-16 11:11:22,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305119388] [2022-09-16 11:11:22,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:22,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:22,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1225, Unknown=0, NotChecked=0, Total=1332 [2022-09-16 11:11:22,026 INFO L87 Difference]: Start difference. First operand 60740 states and 216556 transitions. Second operand has 13 states, 12 states have (on average 12.25) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:11:23,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:23,176 INFO L93 Difference]: Finished difference Result 83136 states and 296088 transitions. [2022-09-16 11:11:23,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:11:23,176 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.25) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2022-09-16 11:11:23,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:23,555 INFO L225 Difference]: With dead ends: 83136 [2022-09-16 11:11:23,555 INFO L226 Difference]: Without dead ends: 83136 [2022-09-16 11:11:23,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=216, Invalid=2334, Unknown=0, NotChecked=0, Total=2550 [2022-09-16 11:11:23,556 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 469 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:23,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1985 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:11:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83136 states. [2022-09-16 11:11:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83136 to 60010. [2022-09-16 11:11:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60010 states, 59975 states have (on average 3.5746727803251357) internal successors, (214391), 60009 states have internal predecessors, (214391), 0 states have call successors, (0), 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 11:11:25,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60010 states to 60010 states and 214391 transitions. [2022-09-16 11:11:25,953 INFO L78 Accepts]: Start accepts. Automaton has 60010 states and 214391 transitions. Word has length 147 [2022-09-16 11:11:25,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:25,954 INFO L495 AbstractCegarLoop]: Abstraction has 60010 states and 214391 transitions. [2022-09-16 11:11:25,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.25) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 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 11:11:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 60010 states and 214391 transitions. [2022-09-16 11:11:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-09-16 11:11:25,963 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:25,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:26,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:26,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:26,164 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:26,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:26,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1316843227, now seen corresponding path program 1 times [2022-09-16 11:11:26,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:26,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329009495] [2022-09-16 11:11:26,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:26,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:26,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:26,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:26,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329009495] [2022-09-16 11:11:26,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329009495] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:26,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167096197] [2022-09-16 11:11:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:26,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:26,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:26,768 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:26,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-09-16 11:11:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:26,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:11:26,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:26,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:11:27,031 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:11:27,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:11:27,753 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:11:27,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-09-16 11:11:27,819 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:27,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:27,874 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_770 (Array Int Int))) (< (+ c_~s~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_770) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))) 2147483648)) is different from false [2022-09-16 11:11:27,885 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_770 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_770) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 2147483648)) is different from false [2022-09-16 11:11:27,898 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:27,898 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 38 [2022-09-16 11:11:27,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2022-09-16 11:11:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:29,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167096197] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:29,226 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:29,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 18, 18] total 57 [2022-09-16 11:11:29,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106095776] [2022-09-16 11:11:29,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:29,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-09-16 11:11:29,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-09-16 11:11:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=2888, Unknown=2, NotChecked=218, Total=3306 [2022-09-16 11:11:29,228 INFO L87 Difference]: Start difference. First operand 60010 states and 214391 transitions. Second operand has 58 states, 57 states have (on average 6.964912280701754) internal successors, (397), 58 states have internal predecessors, (397), 0 states have call successors, (0), 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 11:11:41,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:41,300 INFO L93 Difference]: Finished difference Result 149378 states and 529245 transitions. [2022-09-16 11:11:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-09-16 11:11:41,304 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 6.964912280701754) internal successors, (397), 58 states have internal predecessors, (397), 0 states have call successors, (0), 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 151 [2022-09-16 11:11:41,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:42,141 INFO L225 Difference]: With dead ends: 149378 [2022-09-16 11:11:42,141 INFO L226 Difference]: Without dead ends: 149378 [2022-09-16 11:11:42,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 269 SyntacticMatches, 6 SemanticMatches, 160 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 7445 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=3034, Invalid=22400, Unknown=14, NotChecked=634, Total=26082 [2022-09-16 11:11:42,143 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 9378 mSDsluCounter, 9627 mSDsCounter, 0 mSdLazyCounter, 3178 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9378 SdHoareTripleChecker+Valid, 9298 SdHoareTripleChecker+Invalid, 5499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 3178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1525 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:42,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9378 Valid, 9298 Invalid, 5499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 3178 Invalid, 0 Unknown, 1525 Unchecked, 1.8s Time] [2022-09-16 11:11:42,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149378 states. [2022-09-16 11:11:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149378 to 64641. [2022-09-16 11:11:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64641 states, 64606 states have (on average 3.558756152679318) internal successors, (229917), 64640 states have internal predecessors, (229917), 0 states have call successors, (0), 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 11:11:45,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64641 states to 64641 states and 229917 transitions. [2022-09-16 11:11:45,696 INFO L78 Accepts]: Start accepts. Automaton has 64641 states and 229917 transitions. Word has length 151 [2022-09-16 11:11:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:45,696 INFO L495 AbstractCegarLoop]: Abstraction has 64641 states and 229917 transitions. [2022-09-16 11:11:45,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 6.964912280701754) internal successors, (397), 58 states have internal predecessors, (397), 0 states have call successors, (0), 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 11:11:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 64641 states and 229917 transitions. [2022-09-16 11:11:45,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-09-16 11:11:45,716 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:45,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:45,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-09-16 11:11:45,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-09-16 11:11:45,932 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:45,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:45,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2127533804, now seen corresponding path program 1 times [2022-09-16 11:11:45,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:45,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752385042] [2022-09-16 11:11:45,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:45,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:46,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:46,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:46,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752385042] [2022-09-16 11:11:46,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752385042] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:46,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821674069] [2022-09-16 11:11:46,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:46,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:46,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:46,536 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:46,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-09-16 11:11:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:46,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:11:46,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:46,653 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:11:46,805 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:11:46,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:11:47,486 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:11:47,538 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-09-16 11:11:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:47,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:11:47,617 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (Array Int Int))) (< 0 (+ c_~s~0 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_812) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-09-16 11:11:47,641 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_812 (Array Int Int))) (< 0 (+ 2147483649 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_812) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset))))) is different from false [2022-09-16 11:11:47,657 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:11:47,658 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 42 [2022-09-16 11:11:47,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-09-16 11:11:49,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:49,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821674069] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:11:49,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:11:49,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 52 [2022-09-16 11:11:49,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394877976] [2022-09-16 11:11:49,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:11:49,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-09-16 11:11:49,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:49,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-09-16 11:11:49,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=2346, Unknown=2, NotChecked=198, Total=2756 [2022-09-16 11:11:49,126 INFO L87 Difference]: Start difference. First operand 64641 states and 229917 transitions. Second operand has 53 states, 52 states have (on average 7.615384615384615) internal successors, (396), 53 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:11:54,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:54,062 INFO L93 Difference]: Finished difference Result 71734 states and 252817 transitions. [2022-09-16 11:11:54,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-09-16 11:11:54,063 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 52 states have (on average 7.615384615384615) internal successors, (396), 53 states have internal predecessors, (396), 0 states have call successors, (0), 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 152 [2022-09-16 11:11:54,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:54,364 INFO L225 Difference]: With dead ends: 71734 [2022-09-16 11:11:54,365 INFO L226 Difference]: Without dead ends: 71335 [2022-09-16 11:11:54,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 111 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3547 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=1674, Invalid=10537, Unknown=7, NotChecked=438, Total=12656 [2022-09-16 11:11:54,366 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 1925 mSDsluCounter, 6382 mSDsCounter, 0 mSdLazyCounter, 1672 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1925 SdHoareTripleChecker+Valid, 6237 SdHoareTripleChecker+Invalid, 2813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1006 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:54,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1925 Valid, 6237 Invalid, 2813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1672 Invalid, 0 Unknown, 1006 Unchecked, 0.8s Time] [2022-09-16 11:11:54,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71335 states. [2022-09-16 11:11:56,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71335 to 66221. [2022-09-16 11:11:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66221 states, 66186 states have (on average 3.552775511437464) internal successors, (235144), 66220 states have internal predecessors, (235144), 0 states have call successors, (0), 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 11:11:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66221 states to 66221 states and 235144 transitions. [2022-09-16 11:11:56,852 INFO L78 Accepts]: Start accepts. Automaton has 66221 states and 235144 transitions. Word has length 152 [2022-09-16 11:11:56,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:11:56,852 INFO L495 AbstractCegarLoop]: Abstraction has 66221 states and 235144 transitions. [2022-09-16 11:11:56,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 52 states have (on average 7.615384615384615) internal successors, (396), 53 states have internal predecessors, (396), 0 states have call successors, (0), 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 11:11:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 66221 states and 235144 transitions. [2022-09-16 11:11:56,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-09-16 11:11:56,867 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:11:56,867 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:11:56,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-09-16 11:11:57,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-09-16 11:11:57,088 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:11:57,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:11:57,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1204709812, now seen corresponding path program 2 times [2022-09-16 11:11:57,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:11:57,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617253921] [2022-09-16 11:11:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:11:57,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:11:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:11:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:11:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:11:57,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617253921] [2022-09-16 11:11:57,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617253921] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:11:57,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236147617] [2022-09-16 11:11:57,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:11:57,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:11:57,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:11:57,745 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:11:57,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-09-16 11:11:57,853 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:11:57,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:11:57,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 19 conjunts are in the unsatisfiable core [2022-09-16 11:11:57,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:11:58,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:11:58,321 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:11:58,350 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:11:58,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:11:58,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:11:58,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236147617] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:11:58,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:11:58,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [20] total 31 [2022-09-16 11:11:58,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911087361] [2022-09-16 11:11:58,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:11:58,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-09-16 11:11:58,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:11:58,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-09-16 11:11:58,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=919, Unknown=0, NotChecked=0, Total=992 [2022-09-16 11:11:58,379 INFO L87 Difference]: Start difference. First operand 66221 states and 235144 transitions. Second operand has 13 states, 12 states have (on average 12.666666666666666) internal successors, (152), 13 states have internal predecessors, (152), 0 states have call successors, (0), 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 11:11:59,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:11:59,511 INFO L93 Difference]: Finished difference Result 70063 states and 247904 transitions. [2022-09-16 11:11:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:11:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 12.666666666666666) internal successors, (152), 13 states have internal predecessors, (152), 0 states have call successors, (0), 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 152 [2022-09-16 11:11:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:11:59,776 INFO L225 Difference]: With dead ends: 70063 [2022-09-16 11:11:59,776 INFO L226 Difference]: Without dead ends: 70063 [2022-09-16 11:11:59,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=188, Invalid=1882, Unknown=0, NotChecked=0, Total=2070 [2022-09-16 11:11:59,776 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 376 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:11:59,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1980 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-09-16 11:11:59,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70063 states. [2022-09-16 11:12:01,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70063 to 66201. [2022-09-16 11:12:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66201 states, 66166 states have (on average 3.5530181664298883) internal successors, (235089), 66200 states have internal predecessors, (235089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:02,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66201 states to 66201 states and 235089 transitions. [2022-09-16 11:12:02,211 INFO L78 Accepts]: Start accepts. Automaton has 66201 states and 235089 transitions. Word has length 152 [2022-09-16 11:12:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:02,212 INFO L495 AbstractCegarLoop]: Abstraction has 66201 states and 235089 transitions. [2022-09-16 11:12:02,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 12.666666666666666) internal successors, (152), 13 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:02,212 INFO L276 IsEmpty]: Start isEmpty. Operand 66201 states and 235089 transitions. [2022-09-16 11:12:02,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-09-16 11:12:02,221 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:02,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:02,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:02,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-09-16 11:12:02,424 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:12:02,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:02,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2118409738, now seen corresponding path program 1 times [2022-09-16 11:12:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:02,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758302479] [2022-09-16 11:12:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:02,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758302479] [2022-09-16 11:12:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758302479] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:03,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037760997] [2022-09-16 11:12:03,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:03,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:03,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:03,034 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:03,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-09-16 11:12:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:03,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 44 conjunts are in the unsatisfiable core [2022-09-16 11:12:03,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:03,619 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:04,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:04,034 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:12:04,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:04,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:12:04,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:04,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-09-16 11:12:04,545 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:12:04,546 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:04,547 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 12 [2022-09-16 11:12:04,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:04,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:05,355 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:05,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 35 [2022-09-16 11:12:05,370 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:05,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2722 treesize of output 2598 [2022-09-16 11:12:05,389 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1291 treesize of output 1195 [2022-09-16 11:12:05,405 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2486 treesize of output 2294 [2022-09-16 11:12:05,416 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2294 treesize of output 1910 [2022-09-16 11:12:07,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:07,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037760997] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:07,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:07,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 60 [2022-09-16 11:12:07,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731008322] [2022-09-16 11:12:07,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:07,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-09-16 11:12:07,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:07,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-09-16 11:12:07,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=3368, Unknown=31, NotChecked=0, Total=3660 [2022-09-16 11:12:07,145 INFO L87 Difference]: Start difference. First operand 66201 states and 235089 transitions. Second operand has 61 states, 60 states have (on average 5.45) internal successors, (327), 61 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:14,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:14,392 INFO L93 Difference]: Finished difference Result 267778 states and 976710 transitions. [2022-09-16 11:12:14,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-09-16 11:12:14,393 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 5.45) internal successors, (327), 61 states have internal predecessors, (327), 0 states have call successors, (0), 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 152 [2022-09-16 11:12:14,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:16,706 INFO L225 Difference]: With dead ends: 267778 [2022-09-16 11:12:16,706 INFO L226 Difference]: Without dead ends: 267778 [2022-09-16 11:12:16,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 265 SyntacticMatches, 16 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3237 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1383, Invalid=9005, Unknown=118, NotChecked=0, Total=10506 [2022-09-16 11:12:16,719 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 3916 mSDsluCounter, 9768 mSDsCounter, 0 mSdLazyCounter, 1920 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3916 SdHoareTripleChecker+Valid, 9434 SdHoareTripleChecker+Invalid, 3700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1604 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:16,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3916 Valid, 9434 Invalid, 3700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1920 Invalid, 0 Unknown, 1604 Unchecked, 1.1s Time] [2022-09-16 11:12:17,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267778 states. [2022-09-16 11:12:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267778 to 104310. [2022-09-16 11:12:22,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104310 states, 104275 states have (on average 3.717420282905778) internal successors, (387634), 104309 states have internal predecessors, (387634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:24,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104310 states to 104310 states and 387634 transitions. [2022-09-16 11:12:24,026 INFO L78 Accepts]: Start accepts. Automaton has 104310 states and 387634 transitions. Word has length 152 [2022-09-16 11:12:24,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:24,027 INFO L495 AbstractCegarLoop]: Abstraction has 104310 states and 387634 transitions. [2022-09-16 11:12:24,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 5.45) internal successors, (327), 61 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:24,027 INFO L276 IsEmpty]: Start isEmpty. Operand 104310 states and 387634 transitions. [2022-09-16 11:12:24,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-09-16 11:12:24,037 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:24,038 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:24,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:24,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:24,239 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:12:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:24,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1479217117, now seen corresponding path program 2 times [2022-09-16 11:12:24,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:24,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145024747] [2022-09-16 11:12:24,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:24,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:24,342 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:24,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145024747] [2022-09-16 11:12:24,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145024747] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:24,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277963474] [2022-09-16 11:12:24,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:24,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:24,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:24,344 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:24,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-09-16 11:12:24,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:12:24,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:24,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:12:24,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:24,593 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:12:24,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:24,718 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-09-16 11:12:24,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277963474] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:24,719 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:24,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5] total 16 [2022-09-16 11:12:24,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124684176] [2022-09-16 11:12:24,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:24,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:12:24,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:12:24,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-09-16 11:12:24,720 INFO L87 Difference]: Start difference. First operand 104310 states and 387634 transitions. Second operand has 16 states, 16 states have (on average 16.0625) internal successors, (257), 16 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:27,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:27,501 INFO L93 Difference]: Finished difference Result 185251 states and 682579 transitions. [2022-09-16 11:12:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-09-16 11:12:27,502 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 16.0625) internal successors, (257), 16 states have internal predecessors, (257), 0 states have call successors, (0), 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 153 [2022-09-16 11:12:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:29,060 INFO L225 Difference]: With dead ends: 185251 [2022-09-16 11:12:29,061 INFO L226 Difference]: Without dead ends: 179337 [2022-09-16 11:12:29,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 300 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=559, Invalid=2981, Unknown=0, NotChecked=0, Total=3540 [2022-09-16 11:12:29,061 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 1502 mSDsluCounter, 4169 mSDsCounter, 0 mSdLazyCounter, 938 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4254 SdHoareTripleChecker+Invalid, 973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 938 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:29,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 4254 Invalid, 973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 938 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-09-16 11:12:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179337 states. [2022-09-16 11:12:33,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179337 to 90204. [2022-09-16 11:12:33,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90204 states, 90179 states have (on average 3.7142017542886925) internal successors, (334943), 90203 states have internal predecessors, (334943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:34,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90204 states to 90204 states and 334943 transitions. [2022-09-16 11:12:34,110 INFO L78 Accepts]: Start accepts. Automaton has 90204 states and 334943 transitions. Word has length 153 [2022-09-16 11:12:34,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:34,110 INFO L495 AbstractCegarLoop]: Abstraction has 90204 states and 334943 transitions. [2022-09-16 11:12:34,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.0625) internal successors, (257), 16 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:34,111 INFO L276 IsEmpty]: Start isEmpty. Operand 90204 states and 334943 transitions. [2022-09-16 11:12:34,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-09-16 11:12:34,122 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:34,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:34,144 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:34,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-09-16 11:12:34,336 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:12:34,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:34,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1158978208, now seen corresponding path program 1 times [2022-09-16 11:12:34,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:34,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70668826] [2022-09-16 11:12:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:34,409 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:34,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:34,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70668826] [2022-09-16 11:12:34,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70668826] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:34,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403340203] [2022-09-16 11:12:34,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:34,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:34,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:34,411 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:34,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-09-16 11:12:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:34,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 9 conjunts are in the unsatisfiable core [2022-09-16 11:12:34,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:34,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:34,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:34,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:34,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403340203] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:34,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:34,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-09-16 11:12:34,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593603102] [2022-09-16 11:12:34,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:34,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-09-16 11:12:34,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:34,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-09-16 11:12:34,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-09-16 11:12:34,839 INFO L87 Difference]: Start difference. First operand 90204 states and 334943 transitions. Second operand has 19 states, 19 states have (on average 11.210526315789474) internal successors, (213), 19 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:35,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:35,975 INFO L93 Difference]: Finished difference Result 98596 states and 352281 transitions. [2022-09-16 11:12:35,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:12:35,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.210526315789474) internal successors, (213), 19 states have internal predecessors, (213), 0 states have call successors, (0), 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 154 [2022-09-16 11:12:35,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:36,445 INFO L225 Difference]: With dead ends: 98596 [2022-09-16 11:12:36,446 INFO L226 Difference]: Without dead ends: 93799 [2022-09-16 11:12:36,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 297 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2022-09-16 11:12:36,447 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 897 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 1437 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:36,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 1437 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-09-16 11:12:36,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93799 states. [2022-09-16 11:12:38,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93799 to 79749. [2022-09-16 11:12:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79749 states, 79718 states have (on average 3.569996738503224) internal successors, (284593), 79748 states have internal predecessors, (284593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:39,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79749 states to 79749 states and 284593 transitions. [2022-09-16 11:12:39,251 INFO L78 Accepts]: Start accepts. Automaton has 79749 states and 284593 transitions. Word has length 154 [2022-09-16 11:12:39,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:39,251 INFO L495 AbstractCegarLoop]: Abstraction has 79749 states and 284593 transitions. [2022-09-16 11:12:39,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.210526315789474) internal successors, (213), 19 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:39,251 INFO L276 IsEmpty]: Start isEmpty. Operand 79749 states and 284593 transitions. [2022-09-16 11:12:39,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:12:39,262 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:39,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:39,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:39,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:39,472 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:12:39,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1255679685, now seen corresponding path program 1 times [2022-09-16 11:12:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:39,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887157606] [2022-09-16 11:12:39,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:40,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:40,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:40,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887157606] [2022-09-16 11:12:40,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887157606] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:40,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511012690] [2022-09-16 11:12:40,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:40,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:40,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:40,734 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:40,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-09-16 11:12:40,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:40,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 42 conjunts are in the unsatisfiable core [2022-09-16 11:12:40,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:41,640 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:12:42,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:42,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:12:42,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:42,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:12:42,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:42,480 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-09-16 11:12:42,774 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-16 11:12:42,776 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:42,776 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-09-16 11:12:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:42,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:12:43,614 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:43,615 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-09-16 11:12:43,622 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:43,623 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 618 treesize of output 590 [2022-09-16 11:12:43,629 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 574 treesize of output 526 [2022-09-16 11:12:43,636 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 526 treesize of output 502 [2022-09-16 11:12:43,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 502 treesize of output 406 [2022-09-16 11:12:45,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:12:45,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511012690] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:12:45,140 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:12:45,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 66 [2022-09-16 11:12:45,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452139369] [2022-09-16 11:12:45,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:12:45,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-09-16 11:12:45,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:45,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-09-16 11:12:45,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=4063, Unknown=29, NotChecked=0, Total=4422 [2022-09-16 11:12:45,142 INFO L87 Difference]: Start difference. First operand 79749 states and 284593 transitions. Second operand has 67 states, 66 states have (on average 5.378787878787879) internal successors, (355), 67 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:49,435 INFO L93 Difference]: Finished difference Result 103605 states and 371187 transitions. [2022-09-16 11:12:49,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-16 11:12:49,436 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 5.378787878787879) internal successors, (355), 67 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-09-16 11:12:49,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:50,529 INFO L225 Difference]: With dead ends: 103605 [2022-09-16 11:12:50,530 INFO L226 Difference]: Without dead ends: 103605 [2022-09-16 11:12:50,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 266 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2688 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=1140, Invalid=8137, Unknown=35, NotChecked=0, Total=9312 [2022-09-16 11:12:50,531 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 2929 mSDsluCounter, 7533 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2929 SdHoareTripleChecker+Valid, 7321 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 888 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:50,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2929 Valid, 7321 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2155 Invalid, 0 Unknown, 888 Unchecked, 1.1s Time] [2022-09-16 11:12:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103605 states. [2022-09-16 11:12:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103605 to 86451. [2022-09-16 11:12:53,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86451 states, 86420 states have (on average 3.5731427910205973) internal successors, (308791), 86450 states have internal predecessors, (308791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86451 states to 86451 states and 308791 transitions. [2022-09-16 11:12:53,645 INFO L78 Accepts]: Start accepts. Automaton has 86451 states and 308791 transitions. Word has length 156 [2022-09-16 11:12:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:12:53,646 INFO L495 AbstractCegarLoop]: Abstraction has 86451 states and 308791 transitions. [2022-09-16 11:12:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 5.378787878787879) internal successors, (355), 67 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 86451 states and 308791 transitions. [2022-09-16 11:12:53,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:12:53,658 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:12:53,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:12:53,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-09-16 11:12:53,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-09-16 11:12:53,862 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:12:53,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:12:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1652870595, now seen corresponding path program 2 times [2022-09-16 11:12:53,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:12:53,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436789384] [2022-09-16 11:12:53,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:12:53,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:12:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:12:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:12:56,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:12:56,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436789384] [2022-09-16 11:12:56,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436789384] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:12:56,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23991012] [2022-09-16 11:12:56,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:12:56,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:12:56,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:12:56,755 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:12:56,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-09-16 11:12:56,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:12:56,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:12:56,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 27 conjunts are in the unsatisfiable core [2022-09-16 11:12:56,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:12:57,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:12:57,695 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:12:57,968 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:12:57,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-09-16 11:12:58,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:12:58,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:12:58,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23991012] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:12:58,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:12:58,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [39] total 53 [2022-09-16 11:12:58,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407504360] [2022-09-16 11:12:58,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:12:58,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:12:58,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:12:58,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:12:58,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=2711, Unknown=0, NotChecked=0, Total=2862 [2022-09-16 11:12:58,015 INFO L87 Difference]: Start difference. First operand 86451 states and 308791 transitions. Second operand has 16 states, 15 states have (on average 10.4) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:12:59,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:12:59,328 INFO L93 Difference]: Finished difference Result 96945 states and 344236 transitions. [2022-09-16 11:12:59,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:12:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.4) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-09-16 11:12:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:12:59,846 INFO L225 Difference]: With dead ends: 96945 [2022-09-16 11:12:59,847 INFO L226 Difference]: Without dead ends: 96945 [2022-09-16 11:12:59,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=264, Invalid=4158, Unknown=0, NotChecked=0, Total=4422 [2022-09-16 11:12:59,847 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 439 mSDsluCounter, 2616 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:12:59,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 2772 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 416 Invalid, 0 Unknown, 275 Unchecked, 0.2s Time] [2022-09-16 11:13:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96945 states. [2022-09-16 11:13:02,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96945 to 89744. [2022-09-16 11:13:02,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89744 states, 89713 states have (on average 3.567610045366892) internal successors, (320061), 89743 states have internal predecessors, (320061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89744 states to 89744 states and 320061 transitions. [2022-09-16 11:13:03,353 INFO L78 Accepts]: Start accepts. Automaton has 89744 states and 320061 transitions. Word has length 156 [2022-09-16 11:13:03,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:03,353 INFO L495 AbstractCegarLoop]: Abstraction has 89744 states and 320061 transitions. [2022-09-16 11:13:03,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.4) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:03,353 INFO L276 IsEmpty]: Start isEmpty. Operand 89744 states and 320061 transitions. [2022-09-16 11:13:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:13:03,367 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:03,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:03,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:03,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:03,568 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:13:03,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:03,569 INFO L85 PathProgramCache]: Analyzing trace with hash -61380483, now seen corresponding path program 3 times [2022-09-16 11:13:03,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:03,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090602533] [2022-09-16 11:13:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:03,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:04,369 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:13:04,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:04,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090602533] [2022-09-16 11:13:04,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090602533] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:04,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923549801] [2022-09-16 11:13:04,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-16 11:13:04,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:04,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:04,371 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:04,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-09-16 11:13:04,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-09-16 11:13:04,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:04,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 27 conjunts are in the unsatisfiable core [2022-09-16 11:13:04,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:05,087 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:05,256 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:05,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 30 [2022-09-16 11:13:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-16 11:13:05,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:13:05,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923549801] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:13:05,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:13:05,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [24] total 38 [2022-09-16 11:13:05,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649931289] [2022-09-16 11:13:05,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:13:05,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-16 11:13:05,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:05,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-16 11:13:05,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1370, Unknown=0, NotChecked=0, Total=1482 [2022-09-16 11:13:05,293 INFO L87 Difference]: Start difference. First operand 89744 states and 320061 transitions. Second operand has 16 states, 15 states have (on average 10.4) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:06,926 INFO L93 Difference]: Finished difference Result 102342 states and 362911 transitions. [2022-09-16 11:13:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-09-16 11:13:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 10.4) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-09-16 11:13:06,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:07,514 INFO L225 Difference]: With dead ends: 102342 [2022-09-16 11:13:07,515 INFO L226 Difference]: Without dead ends: 102342 [2022-09-16 11:13:07,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 625 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=225, Invalid=2427, Unknown=0, NotChecked=0, Total=2652 [2022-09-16 11:13:07,515 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 640 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 272 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:07,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 2427 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 364 Invalid, 0 Unknown, 272 Unchecked, 0.2s Time] [2022-09-16 11:13:07,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102342 states. [2022-09-16 11:13:10,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102342 to 91416. [2022-09-16 11:13:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91416 states, 91385 states have (on average 3.5669858291842207) internal successors, (325969), 91415 states have internal predecessors, (325969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:11,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91416 states to 91416 states and 325969 transitions. [2022-09-16 11:13:11,110 INFO L78 Accepts]: Start accepts. Automaton has 91416 states and 325969 transitions. Word has length 156 [2022-09-16 11:13:11,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:11,111 INFO L495 AbstractCegarLoop]: Abstraction has 91416 states and 325969 transitions. [2022-09-16 11:13:11,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 10.4) internal successors, (156), 16 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:11,111 INFO L276 IsEmpty]: Start isEmpty. Operand 91416 states and 325969 transitions. [2022-09-16 11:13:11,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:13:11,145 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:11,145 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:11,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:11,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:11,366 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:13:11,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:11,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1396377289, now seen corresponding path program 4 times [2022-09-16 11:13:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:11,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803130172] [2022-09-16 11:13:11,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:11,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:13:12,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:12,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803130172] [2022-09-16 11:13:12,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803130172] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:12,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280753312] [2022-09-16 11:13:12,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-16 11:13:12,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:12,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:12,172 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:12,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-09-16 11:13:12,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-16 11:13:12,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:12,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 37 conjunts are in the unsatisfiable core [2022-09-16 11:13:12,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:13,146 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:13:14,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:14,028 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:14,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:14,155 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:14,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:14,365 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:14,556 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:13:14,556 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:13:14,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:13:14,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:15,400 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:15,401 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 33 [2022-09-16 11:13:15,410 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:15,411 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 618 treesize of output 590 [2022-09-16 11:13:15,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 574 treesize of output 526 [2022-09-16 11:13:15,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 526 treesize of output 430 [2022-09-16 11:13:15,431 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 430 treesize of output 406 [2022-09-16 11:13:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:13:17,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280753312] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:13:17,562 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:13:17,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 66 [2022-09-16 11:13:17,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476353823] [2022-09-16 11:13:17,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:13:17,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-09-16 11:13:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:13:17,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-09-16 11:13:17,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=4099, Unknown=22, NotChecked=0, Total=4422 [2022-09-16 11:13:17,563 INFO L87 Difference]: Start difference. First operand 91416 states and 325969 transitions. Second operand has 67 states, 66 states have (on average 5.378787878787879) internal successors, (355), 67 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-09-16 11:13:21,306 INFO L93 Difference]: Finished difference Result 146630 states and 530238 transitions. [2022-09-16 11:13:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-16 11:13:21,306 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 5.378787878787879) internal successors, (355), 67 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 156 [2022-09-16 11:13:21,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-09-16 11:13:22,162 INFO L225 Difference]: With dead ends: 146630 [2022-09-16 11:13:22,162 INFO L226 Difference]: Without dead ends: 146630 [2022-09-16 11:13:22,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 269 SyntacticMatches, 4 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2038 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=707, Invalid=7461, Unknown=22, NotChecked=0, Total=8190 [2022-09-16 11:13:22,163 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 711 mSDsluCounter, 8011 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 8025 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 667 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-09-16 11:13:22,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 8025 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1212 Invalid, 0 Unknown, 667 Unchecked, 0.6s Time] [2022-09-16 11:13:22,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146630 states. [2022-09-16 11:13:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146630 to 92364. [2022-09-16 11:13:25,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92364 states, 92333 states have (on average 3.568604940812061) internal successors, (329500), 92363 states have internal predecessors, (329500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92364 states to 92364 states and 329500 transitions. [2022-09-16 11:13:26,157 INFO L78 Accepts]: Start accepts. Automaton has 92364 states and 329500 transitions. Word has length 156 [2022-09-16 11:13:26,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-09-16 11:13:26,157 INFO L495 AbstractCegarLoop]: Abstraction has 92364 states and 329500 transitions. [2022-09-16 11:13:26,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 5.378787878787879) internal successors, (355), 67 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:13:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 92364 states and 329500 transitions. [2022-09-16 11:13:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-09-16 11:13:26,170 INFO L187 NwaCegarLoop]: Found error trace [2022-09-16 11:13:26,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:13:26,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-09-16 11:13:26,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:26,372 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-09-16 11:13:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:13:26,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1426623741, now seen corresponding path program 5 times [2022-09-16 11:13:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:13:26,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530137959] [2022-09-16 11:13:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:13:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:13:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:13:28,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:28,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:13:28,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530137959] [2022-09-16 11:13:28,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530137959] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:13:28,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229387778] [2022-09-16 11:13:28,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-09-16 11:13:28,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:13:28,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:13:28,684 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:13:28,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-09-16 11:13:28,814 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-16 11:13:28,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:13:28,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 57 conjunts are in the unsatisfiable core [2022-09-16 11:13:28,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:13:29,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-16 11:13:29,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-09-16 11:13:30,332 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-16 11:13:30,333 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-16 11:13:30,536 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:30,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:30,852 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:30,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-16 11:13:30,981 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-16 11:13:31,192 INFO L356 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-09-16 11:13:31,193 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-09-16 11:13:31,319 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-09-16 11:13:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:13:31,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:13:31,484 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:31,484 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-09-16 11:13:33,083 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:33,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 51 [2022-09-16 11:13:33,095 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-16 11:13:33,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2484 treesize of output 2360 [2022-09-16 11:13:33,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2343 treesize of output 2247 [2022-09-16 11:13:33,127 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2247 treesize of output 2055 [2022-09-16 11:13:33,143 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2055 treesize of output 1671