/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:20:09,501 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:20:09,504 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:20:09,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 18:20:09,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 18:20:09,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 18:20:09,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 18:20:09,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 18:20:09,586 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 18:20:09,587 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 18:20:09,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 18:20:09,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 18:20:09,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 18:20:09,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 18:20:09,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 18:20:09,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 18:20:09,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 18:20:09,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 18:20:09,620 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 18:20:09,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 18:20:09,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 18:20:09,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 18:20:09,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 18:20:09,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 18:20:09,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 18:20:09,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 18:20:09,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 18:20:09,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 18:20:09,630 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 18:20:09,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:20:09,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:20:09,660 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:20:09,660 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:20:09,662 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:20:09,662 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:20:09,662 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:20:09,663 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:20:09,663 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:20:09,663 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:20:09,663 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:20:09,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:20:09,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:20:09,664 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:20:09,664 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:20:09,665 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:20:09,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:20:09,665 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:20:09,665 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:20:09,666 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:20:09,666 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:20:09,666 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:20:09,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:20:09,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:20:09,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:20:09,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:20:09,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:20:09,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:20:09,668 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:20:09,668 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:20:09,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:20:09,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:20:09,669 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:20:10,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:20:10,163 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:20:10,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:20:10,167 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:20:10,168 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:20:10,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2021-10-08 18:20:10,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95ace8ab1/3e89f339a5ca4984882918516ca8d5d1/FLAGc21635fd4 [2021-10-08 18:20:10,876 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:20:10,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c [2021-10-08 18:20:10,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95ace8ab1/3e89f339a5ca4984882918516ca8d5d1/FLAGc21635fd4 [2021-10-08 18:20:11,252 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/95ace8ab1/3e89f339a5ca4984882918516ca8d5d1 [2021-10-08 18:20:11,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:20:11,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:20:11,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:20:11,272 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:20:11,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:20:11,279 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b95697e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11, skipping insertion in model container [2021-10-08 18:20:11,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:20:11,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:20:11,611 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2736,2749] [2021-10-08 18:20:11,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:20:11,659 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 18:20:11,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:20:11,719 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2736,2749] [2021-10-08 18:20:11,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:20:11,738 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:20:11,776 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/unroll-cond-3.wvr.c[2736,2749] [2021-10-08 18:20:11,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:20:11,800 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:20:11,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11 WrapperNode [2021-10-08 18:20:11,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:20:11,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:20:11,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:20:11,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:20:11,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:20:11,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:20:11,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:20:11,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:20:11,871 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:20:11,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:20:11,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:20:11,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:20:11,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (1/1) ... [2021-10-08 18:20:11,958 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:20:11,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:20:11,995 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 18:20:12,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 18:20:12,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:20:12,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:20:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:20:12,059 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:20:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:20:12,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:20:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 18:20:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 18:20:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 18:20:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:20:12,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:20:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:20:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:20:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:20:12,065 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:20:13,689 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:20:13,690 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2021-10-08 18:20:13,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:20:13 BoogieIcfgContainer [2021-10-08 18:20:13,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:20:13,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:20:13,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:20:13,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:20:13,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:20:11" (1/3) ... [2021-10-08 18:20:13,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1500cd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:20:13, skipping insertion in model container [2021-10-08 18:20:13,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:20:11" (2/3) ... [2021-10-08 18:20:13,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1500cd54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:20:13, skipping insertion in model container [2021-10-08 18:20:13,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:20:13" (3/3) ... [2021-10-08 18:20:13,704 INFO L111 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2021-10-08 18:20:13,711 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:20:13,711 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-10-08 18:20:13,712 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:20:13,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,766 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,767 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,768 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,768 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,768 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,770 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,770 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,771 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,771 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,772 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,773 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,773 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,774 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,774 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,776 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,776 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,777 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,778 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,778 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,779 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,779 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,780 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,781 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,781 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,782 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,783 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,783 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,784 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,785 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,786 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,787 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,788 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,788 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,788 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,790 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,791 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,792 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,795 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,800 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,801 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,802 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,802 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,804 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,804 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,805 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,805 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,806 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,806 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,806 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,806 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,806 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,807 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,808 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,809 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,810 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,813 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,814 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,815 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,815 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,818 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,818 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,819 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,819 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:20:13,825 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 18:20:13,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:20:13,892 INFO L339 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=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 18:20:13,893 INFO L340 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2021-10-08 18:20:13,912 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:20:13,925 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 161 transitions, 338 flow [2021-10-08 18:20:13,929 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 161 transitions, 338 flow [2021-10-08 18:20:13,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 154 places, 161 transitions, 338 flow [2021-10-08 18:20:14,002 INFO L129 PetriNetUnfolder]: 14/159 cut-off events. [2021-10-08 18:20:14,003 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 18:20:14,009 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 159 events. 14/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 255 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2021-10-08 18:20:14,013 INFO L116 LiptonReduction]: Number of co-enabled transitions 1792 [2021-10-08 18:20:45,455 INFO L131 LiptonReduction]: Checked pairs total: 2350 [2021-10-08 18:20:45,456 INFO L133 LiptonReduction]: Total number of compositions: 187 [2021-10-08 18:20:45,467 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 45 places, 41 transitions, 98 flow [2021-10-08 18:20:45,493 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 266 states, 134 states have (on average 4.977611940298507) internal successors, (667), 265 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 134 states have (on average 4.977611940298507) internal successors, (667), 265 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 18:20:45,502 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:45,503 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 18:20:45,503 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:45,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:45,510 INFO L82 PathProgramCache]: Analyzing trace with hash 24388, now seen corresponding path program 1 times [2021-10-08 18:20:45,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:45,524 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954198338] [2021-10-08 18:20:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:45,526 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:45,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:45,532 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:45,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:20:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:45,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:20:45,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:45,911 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-08 18:20:45,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-08 18:20:46,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:46,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:46,574 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:46,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954198338] [2021-10-08 18:20:46,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954198338] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:46,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:46,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:20:46,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995475765] [2021-10-08 18:20:46,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:20:46,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:20:46,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:20:46,601 INFO L87 Difference]: Start difference. First operand has 266 states, 134 states have (on average 4.977611940298507) internal successors, (667), 265 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:46,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:46,887 INFO L93 Difference]: Finished difference Result 224 states and 561 transitions. [2021-10-08 18:20:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:20:46,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 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 2 [2021-10-08 18:20:46,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:46,904 INFO L225 Difference]: With dead ends: 224 [2021-10-08 18:20:46,905 INFO L226 Difference]: Without dead ends: 224 [2021-10-08 18:20:46,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:20:46,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-10-08 18:20:46,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2021-10-08 18:20:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 116 states have (on average 4.836206896551724) internal successors, (561), 223 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:46,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 561 transitions. [2021-10-08 18:20:46,971 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 561 transitions. Word has length 2 [2021-10-08 18:20:46,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:46,972 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 561 transitions. [2021-10-08 18:20:46,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 561 transitions. [2021-10-08 18:20:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 18:20:46,973 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:46,973 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 18:20:46,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:47,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:47,187 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:47,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:47,188 INFO L82 PathProgramCache]: Analyzing trace with hash 24390, now seen corresponding path program 1 times [2021-10-08 18:20:47,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:47,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473762478] [2021-10-08 18:20:47,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:47,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:47,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:47,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:47,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:20:47,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:47,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:20:47,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:47,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:20:47,474 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:20:47,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:20:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:47,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:47,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:47,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:47,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473762478] [2021-10-08 18:20:47,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473762478] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:47,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:47,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:20:47,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654001767] [2021-10-08 18:20:47,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:20:47,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:47,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:20:47,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:20:47,683 INFO L87 Difference]: Start difference. First operand 224 states and 561 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:48,519 INFO L93 Difference]: Finished difference Result 447 states and 1124 transitions. [2021-10-08 18:20:48,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:20:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 2 [2021-10-08 18:20:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:48,525 INFO L225 Difference]: With dead ends: 447 [2021-10-08 18:20:48,526 INFO L226 Difference]: Without dead ends: 447 [2021-10-08 18:20:48,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:20:48,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-10-08 18:20:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 226. [2021-10-08 18:20:48,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 118 states have (on average 4.822033898305085) internal successors, (569), 225 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:48,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 569 transitions. [2021-10-08 18:20:48,553 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 569 transitions. Word has length 2 [2021-10-08 18:20:48,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:48,554 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 569 transitions. [2021-10-08 18:20:48,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:48,554 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 569 transitions. [2021-10-08 18:20:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 18:20:48,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:48,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 18:20:48,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:48,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:48,767 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:48,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:48,768 INFO L82 PathProgramCache]: Analyzing trace with hash 24487, now seen corresponding path program 1 times [2021-10-08 18:20:48,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:48,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952112861] [2021-10-08 18:20:48,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:48,770 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:48,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:48,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:48,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:20:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:48,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:20:48,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:48,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:48,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:48,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:48,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:48,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952112861] [2021-10-08 18:20:48,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952112861] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:48,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:48,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:20:48,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331855525] [2021-10-08 18:20:48,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:20:48,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:48,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:20:48,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:20:48,905 INFO L87 Difference]: Start difference. First operand 226 states and 569 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:48,957 INFO L93 Difference]: Finished difference Result 226 states and 566 transitions. [2021-10-08 18:20:48,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:20:48,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 2 [2021-10-08 18:20:48,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:48,960 INFO L225 Difference]: With dead ends: 226 [2021-10-08 18:20:48,961 INFO L226 Difference]: Without dead ends: 226 [2021-10-08 18:20:48,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:20:48,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-10-08 18:20:48,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2021-10-08 18:20:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 118 states have (on average 4.796610169491525) internal successors, (566), 225 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:48,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 566 transitions. [2021-10-08 18:20:48,978 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 566 transitions. Word has length 2 [2021-10-08 18:20:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:48,978 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 566 transitions. [2021-10-08 18:20:48,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 566 transitions. [2021-10-08 18:20:48,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:20:48,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:48,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:20:48,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:49,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:49,192 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:49,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:49,193 INFO L82 PathProgramCache]: Analyzing trace with hash 759001, now seen corresponding path program 1 times [2021-10-08 18:20:49,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:49,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298733493] [2021-10-08 18:20:49,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:49,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:49,195 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:49,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:20:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:49,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:20:49,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:20:49,486 INFO L354 Elim1Store]: treesize reduction 147, result has 23.8 percent of original size [2021-10-08 18:20:49,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 43 treesize of output 75 [2021-10-08 18:20:49,513 INFO L388 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 138 treesize of output 134 [2021-10-08 18:20:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:51,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:51,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:51,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298733493] [2021-10-08 18:20:51,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298733493] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:20:51,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:20:51,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2021-10-08 18:20:51,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131233537] [2021-10-08 18:20:51,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:20:51,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:51,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:20:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:20:51,474 INFO L87 Difference]: Start difference. First operand 226 states and 566 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:52,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:52,463 INFO L93 Difference]: Finished difference Result 410 states and 1008 transitions. [2021-10-08 18:20:52,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:20:52,464 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 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 3 [2021-10-08 18:20:52,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:52,468 INFO L225 Difference]: With dead ends: 410 [2021-10-08 18:20:52,468 INFO L226 Difference]: Without dead ends: 410 [2021-10-08 18:20:52,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 471.0ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:20:52,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-08 18:20:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 277. [2021-10-08 18:20:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 169 states have (on average 4.485207100591716) internal successors, (758), 276 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:52,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 758 transitions. [2021-10-08 18:20:52,489 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 758 transitions. Word has length 3 [2021-10-08 18:20:52,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:52,490 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 758 transitions. [2021-10-08 18:20:52,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:52,490 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 758 transitions. [2021-10-08 18:20:52,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:20:52,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:52,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:20:52,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:52,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:52,703 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:52,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:52,704 INFO L82 PathProgramCache]: Analyzing trace with hash 759002, now seen corresponding path program 1 times [2021-10-08 18:20:52,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:52,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295120628] [2021-10-08 18:20:52,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:52,706 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:52,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:52,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:52,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:20:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:52,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:20:52,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:52,938 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-08 18:20:52,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 case distinctions, treesize of input 144 treesize of output 179 [2021-10-08 18:20:55,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:20:55,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:20:55,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:55,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295120628] [2021-10-08 18:20:55,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295120628] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:20:55,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:20:55,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:20:55,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725477638] [2021-10-08 18:20:55,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:20:55,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:20:55,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:20:55,440 INFO L87 Difference]: Start difference. First operand 277 states and 758 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:55,705 INFO L93 Difference]: Finished difference Result 236 states and 594 transitions. [2021-10-08 18:20:55,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:20:55,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 3 [2021-10-08 18:20:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:55,713 INFO L225 Difference]: With dead ends: 236 [2021-10-08 18:20:55,714 INFO L226 Difference]: Without dead ends: 236 [2021-10-08 18:20:55,714 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:20:55,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-10-08 18:20:55,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-10-08 18:20:55,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 156 states have (on average 3.8076923076923075) internal successors, (594), 235 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:55,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 594 transitions. [2021-10-08 18:20:55,733 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 594 transitions. Word has length 3 [2021-10-08 18:20:55,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:55,734 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 594 transitions. [2021-10-08 18:20:55,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:55,735 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 594 transitions. [2021-10-08 18:20:55,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 18:20:55,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:55,735 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 18:20:55,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:55,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:55,951 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:55,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:55,967 INFO L82 PathProgramCache]: Analyzing trace with hash 23528838, now seen corresponding path program 1 times [2021-10-08 18:20:55,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:55,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926453246] [2021-10-08 18:20:55,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:55,969 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:55,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:55,970 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:55,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:20:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:56,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 18:20:56,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:56,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:20:56,267 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:20:56,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:20:56,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:56,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:57,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:57,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926453246] [2021-10-08 18:20:57,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926453246] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:20:57,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:20:57,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 18:20:57,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335813066] [2021-10-08 18:20:57,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:20:57,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:57,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:20:57,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:20:57,013 INFO L87 Difference]: Start difference. First operand 236 states and 594 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:59,240 INFO L93 Difference]: Finished difference Result 866 states and 2073 transitions. [2021-10-08 18:20:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:20:59,243 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 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 4 [2021-10-08 18:20:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:59,250 INFO L225 Difference]: With dead ends: 866 [2021-10-08 18:20:59,251 INFO L226 Difference]: Without dead ends: 866 [2021-10-08 18:20:59,252 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 890.6ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:20:59,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-10-08 18:20:59,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 238. [2021-10-08 18:20:59,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 158 states have (on average 3.7848101265822787) internal successors, (598), 237 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 598 transitions. [2021-10-08 18:20:59,272 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 598 transitions. Word has length 4 [2021-10-08 18:20:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:59,273 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 598 transitions. [2021-10-08 18:20:59,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:59,277 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 598 transitions. [2021-10-08 18:20:59,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:20:59,278 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:59,278 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:20:59,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:59,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:59,491 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:20:59,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:59,492 INFO L82 PathProgramCache]: Analyzing trace with hash 729416583, now seen corresponding path program 1 times [2021-10-08 18:20:59,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:59,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196846622] [2021-10-08 18:20:59,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:20:59,493 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:59,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:59,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:59,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:20:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:20:59,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:20:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:59,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:59,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:59,864 INFO L388 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 35 treesize of output 31 [2021-10-08 18:21:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:00,003 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:00,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196846622] [2021-10-08 18:21:00,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196846622] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:00,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:00,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 18:21:00,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671733972] [2021-10-08 18:21:00,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:21:00,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:21:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:21:00,005 INFO L87 Difference]: Start difference. First operand 238 states and 598 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:01,035 INFO L93 Difference]: Finished difference Result 496 states and 1200 transitions. [2021-10-08 18:21:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:21:01,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 5 [2021-10-08 18:21:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:01,041 INFO L225 Difference]: With dead ends: 496 [2021-10-08 18:21:01,041 INFO L226 Difference]: Without dead ends: 496 [2021-10-08 18:21:01,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 404.5ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:21:01,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-08 18:21:01,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 284. [2021-10-08 18:21:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 204 states have (on average 3.9901960784313726) internal successors, (814), 283 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:01,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 814 transitions. [2021-10-08 18:21:01,057 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 814 transitions. Word has length 5 [2021-10-08 18:21:01,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:01,057 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 814 transitions. [2021-10-08 18:21:01,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:01,058 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 814 transitions. [2021-10-08 18:21:01,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:21:01,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:01,058 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:21:01,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:01,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:01,271 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:01,272 INFO L82 PathProgramCache]: Analyzing trace with hash 729416584, now seen corresponding path program 1 times [2021-10-08 18:21:01,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:01,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1292697745] [2021-10-08 18:21:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:01,273 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:01,275 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:01,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:21:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:01,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:21:01,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:01,496 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-08 18:21:01,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-08 18:21:01,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:21:01,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:21:01,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:01,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1292697745] [2021-10-08 18:21:01,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1292697745] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:21:01,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:21:01,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-08 18:21:01,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744607504] [2021-10-08 18:21:01,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:21:01,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:01,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:21:01,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:21:01,911 INFO L87 Difference]: Start difference. First operand 284 states and 814 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:02,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:02,137 INFO L93 Difference]: Finished difference Result 178 states and 476 transitions. [2021-10-08 18:21:02,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 18:21:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-08 18:21:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:02,145 INFO L225 Difference]: With dead ends: 178 [2021-10-08 18:21:02,145 INFO L226 Difference]: Without dead ends: 178 [2021-10-08 18:21:02,145 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 23.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 18:21:02,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-08 18:21:02,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2021-10-08 18:21:02,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 136 states have (on average 3.5) internal successors, (476), 177 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:02,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 476 transitions. [2021-10-08 18:21:02,156 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 476 transitions. Word has length 5 [2021-10-08 18:21:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:02,157 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 476 transitions. [2021-10-08 18:21:02,157 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 476 transitions. [2021-10-08 18:21:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:21:02,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:02,158 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:21:02,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:02,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:02,371 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:02,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:02,372 INFO L82 PathProgramCache]: Analyzing trace with hash 729416648, now seen corresponding path program 1 times [2021-10-08 18:21:02,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:02,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [525017707] [2021-10-08 18:21:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:02,373 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:02,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:02,375 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:02,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:21:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:02,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:21:02,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:02,634 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-08 18:21:02,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-08 18:21:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:21:03,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:21:03,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:03,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [525017707] [2021-10-08 18:21:03,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [525017707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:21:03,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:21:03,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:21:03,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909869798] [2021-10-08 18:21:03,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:21:03,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:21:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:21:03,019 INFO L87 Difference]: Start difference. First operand 178 states and 476 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:03,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:03,235 INFO L93 Difference]: Finished difference Result 167 states and 449 transitions. [2021-10-08 18:21:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:21:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 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 5 [2021-10-08 18:21:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:03,238 INFO L225 Difference]: With dead ends: 167 [2021-10-08 18:21:03,238 INFO L226 Difference]: Without dead ends: 167 [2021-10-08 18:21:03,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:21:03,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-10-08 18:21:03,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2021-10-08 18:21:03,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 133 states have (on average 3.3759398496240602) internal successors, (449), 166 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:03,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 449 transitions. [2021-10-08 18:21:03,246 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 449 transitions. Word has length 5 [2021-10-08 18:21:03,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:03,246 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 449 transitions. [2021-10-08 18:21:03,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:03,247 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 449 transitions. [2021-10-08 18:21:03,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:21:03,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:03,247 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:21:03,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:03,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:03,460 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:03,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:03,461 INFO L82 PathProgramCache]: Analyzing trace with hash 729416649, now seen corresponding path program 1 times [2021-10-08 18:21:03,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:03,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [821546899] [2021-10-08 18:21:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:03,463 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:03,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:03,464 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:03,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:21:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:03,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:21:03,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:03,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:03,735 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:21:03,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:21:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:03,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:04,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:04,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:04,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [821546899] [2021-10-08 18:21:04,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [821546899] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:04,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:04,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 18:21:04,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328992552] [2021-10-08 18:21:04,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:21:04,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:04,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:21:04,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:21:04,214 INFO L87 Difference]: Start difference. First operand 167 states and 449 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:04,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:04,785 INFO L93 Difference]: Finished difference Result 200 states and 515 transitions. [2021-10-08 18:21:04,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:21:04,786 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 5 [2021-10-08 18:21:04,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:04,788 INFO L225 Difference]: With dead ends: 200 [2021-10-08 18:21:04,788 INFO L226 Difference]: Without dead ends: 200 [2021-10-08 18:21:04,788 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 270.7ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:21:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-10-08 18:21:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 156. [2021-10-08 18:21:04,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 130 states have (on average 3.246153846153846) internal successors, (422), 155 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:04,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 422 transitions. [2021-10-08 18:21:04,795 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 422 transitions. Word has length 5 [2021-10-08 18:21:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:04,796 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 422 transitions. [2021-10-08 18:21:04,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:04,796 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 422 transitions. [2021-10-08 18:21:04,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 18:21:04,796 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:04,797 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 18:21:04,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:05,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:05,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:05,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1137078188, now seen corresponding path program 1 times [2021-10-08 18:21:05,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:05,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [19647169] [2021-10-08 18:21:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:05,011 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:05,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:05,012 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:05,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:21:05,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:05,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:21:05,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:05,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:05,365 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:21:05,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:21:05,622 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:05,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:06,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:06,478 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [19647169] [2021-10-08 18:21:06,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [19647169] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:06,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:06,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 18:21:06,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144830742] [2021-10-08 18:21:06,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:21:06,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:21:06,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:21:06,485 INFO L87 Difference]: Start difference. First operand 156 states and 422 transitions. Second operand has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:11,545 INFO L93 Difference]: Finished difference Result 285 states and 694 transitions. [2021-10-08 18:21:11,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:21:11,546 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 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 6 [2021-10-08 18:21:11,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:11,550 INFO L225 Difference]: With dead ends: 285 [2021-10-08 18:21:11,550 INFO L226 Difference]: Without dead ends: 285 [2021-10-08 18:21:11,551 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2489.3ms TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:21:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-10-08 18:21:11,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 159. [2021-10-08 18:21:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 133 states have (on average 3.338345864661654) internal successors, (444), 158 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 444 transitions. [2021-10-08 18:21:11,559 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 444 transitions. Word has length 6 [2021-10-08 18:21:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:11,559 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 444 transitions. [2021-10-08 18:21:11,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:11,559 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 444 transitions. [2021-10-08 18:21:11,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 18:21:11,560 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:11,560 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1] [2021-10-08 18:21:11,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:11,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:11,772 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:11,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:11,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1136466983, now seen corresponding path program 2 times [2021-10-08 18:21:11,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:11,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382506404] [2021-10-08 18:21:11,774 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:21:11,775 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:11,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:11,776 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:11,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:21:11,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:21:11,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:11,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:21:11,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:12,042 INFO L354 Elim1Store]: treesize reduction 147, result has 23.8 percent of original size [2021-10-08 18:21:12,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 49 treesize of output 81 [2021-10-08 18:21:12,051 INFO L388 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 103 treesize of output 101 [2021-10-08 18:21:14,569 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 18:21:14,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 18:21:14,646 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:14,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382506404] [2021-10-08 18:21:14,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382506404] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:21:14,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:21:14,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:21:14,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919859526] [2021-10-08 18:21:14,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:21:14,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:14,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:21:14,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:21:14,649 INFO L87 Difference]: Start difference. First operand 159 states and 444 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:14,877 INFO L93 Difference]: Finished difference Result 124 states and 324 transitions. [2021-10-08 18:21:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:21:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-08 18:21:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:14,880 INFO L225 Difference]: With dead ends: 124 [2021-10-08 18:21:14,880 INFO L226 Difference]: Without dead ends: 124 [2021-10-08 18:21:14,881 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:21:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-10-08 18:21:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2021-10-08 18:21:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 96 states have (on average 2.96875) internal successors, (285), 108 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:14,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 285 transitions. [2021-10-08 18:21:14,885 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 285 transitions. Word has length 6 [2021-10-08 18:21:14,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:14,886 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 285 transitions. [2021-10-08 18:21:14,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:14,886 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 285 transitions. [2021-10-08 18:21:14,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:21:14,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:14,887 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:14,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:15,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:15,099 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:15,100 INFO L82 PathProgramCache]: Analyzing trace with hash 889745976, now seen corresponding path program 1 times [2021-10-08 18:21:15,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:15,101 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900769716] [2021-10-08 18:21:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:15,101 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:15,102 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:15,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:21:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:15,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-08 18:21:15,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:15,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:15,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:15,568 INFO L388 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 35 treesize of output 31 [2021-10-08 18:21:15,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:15,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:15,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900769716] [2021-10-08 18:21:15,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900769716] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:15,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:15,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 18:21:15,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749484477] [2021-10-08 18:21:15,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:21:15,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:15,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:21:15,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:21:15,708 INFO L87 Difference]: Start difference. First operand 109 states and 285 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:16,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:16,387 INFO L93 Difference]: Finished difference Result 136 states and 412 transitions. [2021-10-08 18:21:16,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:21:16,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-08 18:21:16,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:16,390 INFO L225 Difference]: With dead ends: 136 [2021-10-08 18:21:16,390 INFO L226 Difference]: Without dead ends: 136 [2021-10-08 18:21:16,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 420.8ms TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:21:16,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-08 18:21:16,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 125. [2021-10-08 18:21:16,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 112 states have (on average 3.3660714285714284) internal successors, (377), 124 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 377 transitions. [2021-10-08 18:21:16,396 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 377 transitions. Word has length 7 [2021-10-08 18:21:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:16,396 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 377 transitions. [2021-10-08 18:21:16,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 377 transitions. [2021-10-08 18:21:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 18:21:16,397 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:16,398 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:16,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:16,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:16,598 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:16,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:16,599 INFO L82 PathProgramCache]: Analyzing trace with hash 889746143, now seen corresponding path program 1 times [2021-10-08 18:21:16,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:16,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155717128] [2021-10-08 18:21:16,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:21:16,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:16,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:16,602 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:16,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:21:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:21:16,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:21:16,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:16,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:16,908 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:21:16,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:21:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:17,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:17,237 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-08 18:21:17,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 154 [2021-10-08 18:21:17,242 INFO L388 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 154 treesize of output 152 [2021-10-08 18:21:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:19,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:19,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155717128] [2021-10-08 18:21:19,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155717128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:19,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:19,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 18:21:19,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318606598] [2021-10-08 18:21:19,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 18:21:19,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:19,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 18:21:19,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:21:19,196 INFO L87 Difference]: Start difference. First operand 125 states and 377 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:28,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:28,581 INFO L93 Difference]: Finished difference Result 150 states and 402 transitions. [2021-10-08 18:21:28,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:21:28,584 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 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 7 [2021-10-08 18:21:28,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:28,585 INFO L225 Difference]: With dead ends: 150 [2021-10-08 18:21:28,585 INFO L226 Difference]: Without dead ends: 150 [2021-10-08 18:21:28,586 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1866.8ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:21:28,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-10-08 18:21:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 113. [2021-10-08 18:21:28,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 100 states have (on average 3.18) internal successors, (318), 112 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:28,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 318 transitions. [2021-10-08 18:21:28,592 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 318 transitions. Word has length 7 [2021-10-08 18:21:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:28,592 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 318 transitions. [2021-10-08 18:21:28,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:28,593 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 318 transitions. [2021-10-08 18:21:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 18:21:28,593 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:28,593 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 18:21:28,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:28,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:28,794 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:28,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:28,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1223074310, now seen corresponding path program 2 times [2021-10-08 18:21:28,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:28,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146880546] [2021-10-08 18:21:28,796 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:21:28,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:28,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:28,798 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:28,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:21:28,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:21:28,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:28,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:21:28,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:28,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:29,128 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:21:29,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:21:29,458 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:29,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:31,327 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:31,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:31,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146880546] [2021-10-08 18:21:31,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146880546] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:31,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:31,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:21:31,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424329380] [2021-10-08 18:21:31,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:21:31,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:31,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:21:31,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:21:31,329 INFO L87 Difference]: Start difference. First operand 113 states and 318 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:40,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:40,675 INFO L93 Difference]: Finished difference Result 984 states and 2838 transitions. [2021-10-08 18:21:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:21:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 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 8 [2021-10-08 18:21:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:40,686 INFO L225 Difference]: With dead ends: 984 [2021-10-08 18:21:40,686 INFO L226 Difference]: Without dead ends: 984 [2021-10-08 18:21:40,687 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5660.0ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:21:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 984 states. [2021-10-08 18:21:40,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 984 to 121. [2021-10-08 18:21:40,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 108 states have (on average 3.0925925925925926) internal successors, (334), 120 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:40,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 334 transitions. [2021-10-08 18:21:40,701 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 334 transitions. Word has length 8 [2021-10-08 18:21:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:40,701 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 334 transitions. [2021-10-08 18:21:40,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 334 transitions. [2021-10-08 18:21:40,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 18:21:40,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:40,702 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-08 18:21:40,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:40,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:40,915 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:40,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:40,916 INFO L82 PathProgramCache]: Analyzing trace with hash -738787938, now seen corresponding path program 2 times [2021-10-08 18:21:40,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:40,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847105628] [2021-10-08 18:21:40,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:21:40,917 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:40,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:40,919 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:40,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:21:41,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:21:41,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:41,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:21:41,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:41,145 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:41,373 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:21:41,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:21:41,832 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:41,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:21:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:21:44,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:21:44,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847105628] [2021-10-08 18:21:44,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847105628] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:21:44,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:21:44,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:21:44,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014022562] [2021-10-08 18:21:44,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:21:44,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:21:44,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:21:44,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:21:44,075 INFO L87 Difference]: Start difference. First operand 121 states and 334 transitions. Second operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:59,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:21:59,130 INFO L93 Difference]: Finished difference Result 389 states and 957 transitions. [2021-10-08 18:21:59,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 18:21:59,132 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 9 [2021-10-08 18:21:59,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:21:59,135 INFO L225 Difference]: With dead ends: 389 [2021-10-08 18:21:59,135 INFO L226 Difference]: Without dead ends: 389 [2021-10-08 18:21:59,136 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 8548.0ms TimeCoverageRelationStatistics Valid=257, Invalid=613, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:21:59,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-10-08 18:21:59,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 144. [2021-10-08 18:21:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 131 states have (on average 3.2213740458015265) internal successors, (422), 143 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 422 transitions. [2021-10-08 18:21:59,143 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 422 transitions. Word has length 9 [2021-10-08 18:21:59,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:21:59,143 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 422 transitions. [2021-10-08 18:21:59,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:21:59,144 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 422 transitions. [2021-10-08 18:21:59,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 18:21:59,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:21:59,144 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2021-10-08 18:21:59,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:21:59,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:21:59,357 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err9REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:21:59,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:21:59,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1427528915, now seen corresponding path program 2 times [2021-10-08 18:21:59,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:21:59,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961496547] [2021-10-08 18:21:59,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:21:59,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:21:59,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:21:59,361 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:21:59,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:21:59,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:21:59,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:21:59,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:21:59,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:21:59,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 18:21:59,711 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-08 18:21:59,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-08 18:21:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 18:21:59,971 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:22:00,037 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-08 18:22:00,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 189 treesize of output 154 [2021-10-08 18:22:00,042 INFO L388 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 154 treesize of output 152 [2021-10-08 18:22:02,169 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 18:22:02,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:22:02,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961496547] [2021-10-08 18:22:02,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961496547] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:22:02,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:22:02,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 18:22:02,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567775991] [2021-10-08 18:22:02,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:22:02,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:22:02,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:22:02,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 18:22:02,172 INFO L87 Difference]: Start difference. First operand 144 states and 422 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:22:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:22:06,423 INFO L93 Difference]: Finished difference Result 94 states and 243 transitions. [2021-10-08 18:22:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:22:06,424 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 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 10 [2021-10-08 18:22:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:22:06,425 INFO L225 Difference]: With dead ends: 94 [2021-10-08 18:22:06,425 INFO L226 Difference]: Without dead ends: 94 [2021-10-08 18:22:06,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 682.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:22:06,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-08 18:22:06,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 55. [2021-10-08 18:22:06,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 52 states have (on average 2.4038461538461537) internal successors, (125), 54 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) [2021-10-08 18:22:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 125 transitions. [2021-10-08 18:22:06,429 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 125 transitions. Word has length 10 [2021-10-08 18:22:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:22:06,429 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 125 transitions. [2021-10-08 18:22:06,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:22:06,430 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 125 transitions. [2021-10-08 18:22:06,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:22:06,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:22:06,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:22:06,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:06,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:22:06,638 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:22:06,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:22:06,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1827377080, now seen corresponding path program 1 times [2021-10-08 18:22:06,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:22:06,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [947825937] [2021-10-08 18:22:06,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:22:06,640 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:22:06,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:22:06,641 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:22:06,643 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:22:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:22:06,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:22:06,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:22:07,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:22:07,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [947825937] [2021-10-08 18:22:07,205 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 18:22:07,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2077819689] [2021-10-08 18:22:07,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:22:07,205 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-08 18:22:07,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-08 18:22:07,207 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-08 18:22:07,210 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-10-08 18:22:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:22:07,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:22:07,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:22:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:22:07,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:22:08,316 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-08 18:22:08,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 288 treesize of output 231 [2021-10-08 18:22:08,338 INFO L388 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 231 treesize of output 227 [2021-10-08 18:22:36,320 INFO L354 Elim1Store]: treesize reduction 105, result has 0.9 percent of original size [2021-10-08 18:22:36,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 134 [2021-10-08 18:22:36,331 INFO L388 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 134 treesize of output 132 [2021-10-08 18:22:36,340 INFO L388 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 132 treesize of output 130 [2021-10-08 18:22:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:22:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2077819689] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:22:36,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:22:36,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 18:22:36,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791464241] [2021-10-08 18:22:36,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 18:22:36,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:22:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 18:22:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:22:36,686 INFO L87 Difference]: Start difference. First operand 55 states and 125 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:22:37,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:22:37,337 INFO L93 Difference]: Finished difference Result 97 states and 232 transitions. [2021-10-08 18:22:37,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:22:37,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 13 [2021-10-08 18:22:37,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:22:37,340 INFO L225 Difference]: With dead ends: 97 [2021-10-08 18:22:37,340 INFO L226 Difference]: Without dead ends: 97 [2021-10-08 18:22:37,340 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 207.9ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:22:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-10-08 18:22:37,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 83. [2021-10-08 18:22:37,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 80 states have (on average 2.625) internal successors, (210), 82 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:22:37,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 210 transitions. [2021-10-08 18:22:37,344 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 210 transitions. Word has length 13 [2021-10-08 18:22:37,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:22:37,344 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 210 transitions. [2021-10-08 18:22:37,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:22:37,344 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 210 transitions. [2021-10-08 18:22:37,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:22:37,348 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:22:37,348 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:22:37,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:37,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (20)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:37,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-08 18:22:37,761 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 34 more)] === [2021-10-08 18:22:37,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:22:37,762 INFO L82 PathProgramCache]: Analyzing trace with hash -612679642, now seen corresponding path program 2 times [2021-10-08 18:22:37,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:22:37,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [271070170] [2021-10-08 18:22:37,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:22:37,764 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:22:37,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:22:37,765 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:22:37,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:22:37,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:22:37,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:22:37,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:22:37,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:22:38,364 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-08 18:22:38,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 268 treesize of output 211 [2021-10-08 18:22:38,374 INFO L388 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 211 treesize of output 207 [2021-10-08 18:22:40,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:22:40,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [271070170] [2021-10-08 18:22:40,284 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 18:22:40,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764963316] [2021-10-08 18:22:40,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:22:40,285 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-08 18:22:40,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-08 18:22:40,287 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-08 18:22:40,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2021-10-08 18:22:40,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:22:40,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:22:40,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:22:40,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:22:40,928 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 18:22:40,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968530121] [2021-10-08 18:22:40,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:22:40,929 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 18:22:40,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:22:40,930 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-08 18:22:40,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-08 18:22:41,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:22:41,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:22:41,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 18:22:41,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:22:41,629 INFO L354 Elim1Store]: treesize reduction 442, result has 10.0 percent of original size [2021-10-08 18:22:41,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 268 treesize of output 211 [2021-10-08 18:22:41,639 INFO L388 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 211 treesize of output 207 [2021-10-08 18:22:44,271 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-10-08 18:22:44,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:22:44,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-08 18:22:44,272 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-08 18:22:44,272 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-08 18:22:44,276 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:22:44,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:22:44,278 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6REQUIRES_VIOLATION [2021-10-08 18:22:44,279 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:22:44,280 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:22:44,281 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err2REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err3REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err4REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err5REQUIRES_VIOLATION [2021-10-08 18:22:44,282 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err6REQUIRES_VIOLATION [2021-10-08 18:22:44,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err7REQUIRES_VIOLATION [2021-10-08 18:22:44,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err8REQUIRES_VIOLATION [2021-10-08 18:22:44,283 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err9REQUIRES_VIOLATION [2021-10-08 18:22:44,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:44,510 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:44,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (22)] Forceful destruction successful, exit code 0 [2021-10-08 18:22:44,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-10-08 18:22:44,894 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:22:44,894 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:22:44,896 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:216) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateProgramExecution(ModelTranslationContainer.java:206) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getProgramExecutionAsString(UnprovableResult.java:132) at de.uni_freiburg.informatik.ultimate.core.lib.results.UnprovableResult.getLongDescription(UnprovableResult.java:125) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportLocationResults(TraceAbstractionStarter.java:589) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:181) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-08 18:22:44,898 INFO L168 Benchmark]: Toolchain (without parser) took 153639.09 ms. Allocated memory was 174.1 MB in the beginning and 238.0 MB in the end (delta: 64.0 MB). Free memory was 148.0 MB in the beginning and 181.1 MB in the end (delta: -33.1 MB). Peak memory consumption was 145.8 MB. Max. memory is 8.0 GB. [2021-10-08 18:22:44,898 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 174.1 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:22:44,899 INFO L168 Benchmark]: CACSL2BoogieTranslator took 529.49 ms. Allocated memory is still 174.1 MB. Free memory was 147.5 MB in the beginning and 134.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:22:44,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.25 ms. Allocated memory is still 174.1 MB. Free memory was 134.1 MB in the beginning and 132.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:22:44,899 INFO L168 Benchmark]: Boogie Preprocessor took 85.36 ms. Allocated memory is still 174.1 MB. Free memory was 132.1 MB in the beginning and 130.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:22:44,900 INFO L168 Benchmark]: RCFGBuilder took 1752.08 ms. Allocated memory is still 174.1 MB. Free memory was 130.3 MB in the beginning and 123.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. [2021-10-08 18:22:44,900 INFO L168 Benchmark]: TraceAbstraction took 151201.52 ms. Allocated memory was 174.1 MB in the beginning and 238.0 MB in the end (delta: 64.0 MB). Free memory was 122.8 MB in the beginning and 181.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 121.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:22:44,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 174.1 MB. Free memory is still 143.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 529.49 ms. Allocated memory is still 174.1 MB. Free memory was 147.5 MB in the beginning and 134.1 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 52.25 ms. Allocated memory is still 174.1 MB. Free memory was 134.1 MB in the beginning and 132.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.36 ms. Allocated memory is still 174.1 MB. Free memory was 132.1 MB in the beginning and 130.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1752.08 ms. Allocated memory is still 174.1 MB. Free memory was 130.3 MB in the beginning and 123.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 151201.52 ms. Allocated memory was 174.1 MB in the beginning and 238.0 MB in the end (delta: 64.0 MB). Free memory was 122.8 MB in the beginning and 181.1 MB in the end (delta: -58.2 MB). Peak memory consumption was 121.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 31526.7ms, 154 PlacesBefore, 45 PlacesAfterwards, 161 TransitionsBefore, 41 TransitionsAfterwards, 1792 CoEnabledTransitionPairs, 7 FixpointIterations, 85 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 9 ConcurrentYvCompositions, 11 ChoiceCompositions, 187 TotalNumberOfCompositions, 2350 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2308, positive: 2294, positive conditional: 0, positive unconditional: 2294, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1033, positive: 1031, positive conditional: 0, positive unconditional: 1031, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1033, positive: 1031, positive conditional: 0, positive unconditional: 1031, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 186, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 186, negative conditional: 0, negative unconditional: 186, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2308, positive: 1263, positive conditional: 0, positive unconditional: 1263, negative: 12, negative conditional: 0, negative unconditional: 12, unknown: 1033, unknown conditional: 0, unknown unconditional: 1033] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - ExceptionOrErrorResult: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: ArrayIndexOutOfBoundsException: Index 0 out of bounds for length 0: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transformations.BlockEncodingBacktranslator.translateProgramExecution(BlockEncodingBacktranslator.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-08 18:22:44,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...