/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/popl20-more-multiply-verify.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:48:49,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:48:49,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:48:49,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:48:49,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 17:48:49,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 17:48:49,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 17:48:49,326 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 17:48:49,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 17:48:49,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 17:48:49,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 17:48:49,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 17:48:49,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 17:48:49,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 17:48:49,338 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 17:48:49,339 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 17:48:49,343 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 17:48:49,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 17:48:49,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 17:48:49,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 17:48:49,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 17:48:49,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 17:48:49,350 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 17:48:49,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 17:48:49,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 17:48:49,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:48:49,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:48:49,353 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:48:49,355 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 17:48:49,381 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:48:49,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:48:49,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:48:49,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:48:49,384 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:48:49,384 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:48:49,384 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:48:49,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:48:49,384 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:48:49,385 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:48:49,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:48:49,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:48:49,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:48:49,385 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:48:49,386 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:48:49,386 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:48:49,386 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:48:49,386 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:48:49,386 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:48:49,387 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:48:49,387 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:48:49,387 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:48:49,387 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:48:49,387 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:48:49,388 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:48:49,388 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:48:49,388 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:48:49,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:48:49,389 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:48:49,389 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:48:49,389 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:48:49,389 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:48:49,389 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:48:49,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:48:49,755 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:48:49,758 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:48:49,759 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:48:49,760 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:48:49,761 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2021-10-08 17:48:49,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de25a602c/c2997f7322354ee8919aeeaa54f1354c/FLAGb8ec45ab7 [2021-10-08 17:48:50,316 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:48:50,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-multiply-verify.wvr.c [2021-10-08 17:48:50,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de25a602c/c2997f7322354ee8919aeeaa54f1354c/FLAGb8ec45ab7 [2021-10-08 17:48:50,695 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de25a602c/c2997f7322354ee8919aeeaa54f1354c [2021-10-08 17:48:50,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:48:50,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:48:50,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:48:50,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:48:50,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:48:50,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:48:50" (1/1) ... [2021-10-08 17:48:50,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346119b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:50, skipping insertion in model container [2021-10-08 17:48:50,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:48:50" (1/1) ... [2021-10-08 17:48:50,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:48:50,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:48:51,053 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/popl20-more-multiply-verify.wvr.c[2854,2867] [2021-10-08 17:48:51,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:48:51,076 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 17:48:51,081 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:48:51,097 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/popl20-more-multiply-verify.wvr.c[2854,2867] [2021-10-08 17:48:51,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:48:51,107 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:48:51,135 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/popl20-more-multiply-verify.wvr.c[2854,2867] [2021-10-08 17:48:51,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:48:51,157 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:48:51,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51 WrapperNode [2021-10-08 17:48:51,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:48:51,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:48:51,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:48:51,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:48:51,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:48:51,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:48:51,246 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:48:51,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:48:51,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:48:51,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:48:51,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:48:51,380 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:48:51,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (1/1) ... [2021-10-08 17:48:51,391 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:48:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:48:51,420 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 17:48:51,443 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 17:48:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:48:51,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:48:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:48:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:48:51,489 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:48:51,489 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:48:51,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:48:51,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:48:51,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:48:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:48:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:48:51,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 17:48:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:48:51,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:48:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:48:51,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:48:51,495 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 17:48:52,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:48:52,529 INFO L299 CfgBuilder]: Removed 27 assume(true) statements. [2021-10-08 17:48:52,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:48:52 BoogieIcfgContainer [2021-10-08 17:48:52,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:48:52,534 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:48:52,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:48:52,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:48:52,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:48:50" (1/3) ... [2021-10-08 17:48:52,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e31e5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:48:52, skipping insertion in model container [2021-10-08 17:48:52,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:48:51" (2/3) ... [2021-10-08 17:48:52,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e31e5dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:48:52, skipping insertion in model container [2021-10-08 17:48:52,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:48:52" (3/3) ... [2021-10-08 17:48:52,541 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-multiply-verify.wvr.c [2021-10-08 17:48:52,548 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:48:52,548 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2021-10-08 17:48:52,549 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:48:52,596 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,597 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,598 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,598 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,599 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,599 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,599 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,599 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,600 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,600 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,600 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,600 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,601 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,601 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,601 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,602 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,602 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,603 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,603 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,604 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,605 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,605 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,606 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,606 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,608 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,608 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,609 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,609 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,610 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,610 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,610 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,611 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,611 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,612 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,613 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,614 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,614 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,615 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,615 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,616 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,616 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,616 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,617 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,618 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,618 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,619 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,619 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,620 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,620 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,620 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,621 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,621 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,622 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,623 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,624 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,624 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,625 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,625 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,626 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,627 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,629 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,630 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,633 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,638 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,638 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,638 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,639 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,639 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,640 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,640 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,641 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,641 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,641 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,642 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,643 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,643 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,643 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,644 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,644 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,644 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,644 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,644 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,645 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,645 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,645 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,647 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,647 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,648 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,649 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,650 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,655 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,655 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,656 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,656 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,656 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,656 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,657 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,661 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,661 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,661 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,661 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,662 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,662 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,665 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,665 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,666 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,666 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,667 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,667 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:48:52,676 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:48:52,730 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:48:52,739 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 17:48:52,742 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-10-08 17:48:52,770 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:48:52,781 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 176 transitions, 376 flow [2021-10-08 17:48:52,784 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 176 transitions, 376 flow [2021-10-08 17:48:52,786 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 175 places, 176 transitions, 376 flow [2021-10-08 17:48:52,898 INFO L129 PetriNetUnfolder]: 11/173 cut-off events. [2021-10-08 17:48:52,898 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:48:52,908 INFO L84 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 11/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 219 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2021-10-08 17:48:52,916 INFO L116 LiptonReduction]: Number of co-enabled transitions 3462 [2021-10-08 17:49:16,471 INFO L131 LiptonReduction]: Checked pairs total: 4160 [2021-10-08 17:49:16,472 INFO L133 LiptonReduction]: Total number of compositions: 175 [2021-10-08 17:49:16,482 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 56 places, 49 transitions, 122 flow [2021-10-08 17:49:16,539 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 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 17:49:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 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 17:49:16,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:49:16,555 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:16,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:49:16,556 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:16,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:16,563 INFO L82 PathProgramCache]: Analyzing trace with hash 23640, now seen corresponding path program 1 times [2021-10-08 17:49:16,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:16,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392992758] [2021-10-08 17:49:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:16,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:16,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:16,581 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 17:49:16,607 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 17:49:16,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:16,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:49:16,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:16,808 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:49:16,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 17:49:16,867 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 17:49:16,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:16,881 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 17:49:16,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:16,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392992758] [2021-10-08 17:49:16,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392992758] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:16,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:16,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:49:16,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737125726] [2021-10-08 17:49:16,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:49:16,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:49:16,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:49:16,945 INFO L87 Difference]: Start difference. First operand has 874 states, 670 states have (on average 4.3059701492537314) internal successors, (2885), 873 states have internal predecessors, (2885), 0 states have call successors, (0), 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 17:49:17,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:17,156 INFO L93 Difference]: Finished difference Result 748 states and 2440 transitions. [2021-10-08 17:49:17,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:17,158 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 17:49:17,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:17,185 INFO L225 Difference]: With dead ends: 748 [2021-10-08 17:49:17,185 INFO L226 Difference]: Without dead ends: 748 [2021-10-08 17:49:17,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:49:17,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2021-10-08 17:49:17,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 748. [2021-10-08 17:49:17,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 748 states, 581 states have (on average 4.199655765920826) internal successors, (2440), 747 states have internal predecessors, (2440), 0 states have call successors, (0), 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 17:49:17,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 2440 transitions. [2021-10-08 17:49:17,289 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 2440 transitions. Word has length 2 [2021-10-08 17:49:17,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:17,290 INFO L470 AbstractCegarLoop]: Abstraction has 748 states and 2440 transitions. [2021-10-08 17:49:17,291 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 17:49:17,291 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 2440 transitions. [2021-10-08 17:49:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:49:17,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:17,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:49:17,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-08 17:49:17,503 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 17:49:17,504 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:17,505 INFO L82 PathProgramCache]: Analyzing trace with hash 23796, now seen corresponding path program 1 times [2021-10-08 17:49:17,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:17,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1952814758] [2021-10-08 17:49:17,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:17,508 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:17,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:17,509 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 17:49:17,535 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 17:49:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:17,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:49:17,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:17,657 INFO L354 Elim1Store]: treesize reduction 92, result has 21.4 percent of original size [2021-10-08 17:49:17,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 54 [2021-10-08 17:49:17,758 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 17:49:17,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:17,770 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 17:49:17,770 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:17,770 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1952814758] [2021-10-08 17:49:17,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1952814758] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:17,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:17,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:49:17,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679494605] [2021-10-08 17:49:17,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:17,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:17,774 INFO L87 Difference]: Start difference. First operand 748 states and 2440 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 17:49:17,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:17,948 INFO L93 Difference]: Finished difference Result 622 states and 1964 transitions. [2021-10-08 17:49:17,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:17,949 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 17:49:17,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:17,955 INFO L225 Difference]: With dead ends: 622 [2021-10-08 17:49:17,955 INFO L226 Difference]: Without dead ends: 622 [2021-10-08 17:49:17,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:17,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-08 17:49:17,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2021-10-08 17:49:17,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 492 states have (on average 3.991869918699187) internal successors, (1964), 621 states have internal predecessors, (1964), 0 states have call successors, (0), 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 17:49:17,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1964 transitions. [2021-10-08 17:49:17,990 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1964 transitions. Word has length 2 [2021-10-08 17:49:17,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:17,990 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 1964 transitions. [2021-10-08 17:49:17,990 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 17:49:17,990 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1964 transitions. [2021-10-08 17:49:17,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:49:17,991 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:17,991 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:49:18,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-08 17:49:18,199 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 17:49:18,200 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:18,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:18,202 INFO L82 PathProgramCache]: Analyzing trace with hash 23797, now seen corresponding path program 1 times [2021-10-08 17:49:18,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:18,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258838624] [2021-10-08 17:49:18,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:18,203 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:18,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:18,204 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 17:49:18,208 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 17:49:18,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:18,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:49:18,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:18,642 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-08 17:49:18,643 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 5 case distinctions, treesize of input 55 treesize of output 101 [2021-10-08 17:49:18,657 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 17:49:18,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 100 [2021-10-08 17:49:20,213 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 17:49:20,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:20,248 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 17:49:20,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:20,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258838624] [2021-10-08 17:49:20,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258838624] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:20,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:20,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:49:20,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599601742] [2021-10-08 17:49:20,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:20,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:20,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:20,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:20,251 INFO L87 Difference]: Start difference. First operand 622 states and 1964 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 17:49:20,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:20,541 INFO L93 Difference]: Finished difference Result 496 states and 1488 transitions. [2021-10-08 17:49:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:20,542 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 17:49:20,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:20,547 INFO L225 Difference]: With dead ends: 496 [2021-10-08 17:49:20,547 INFO L226 Difference]: Without dead ends: 496 [2021-10-08 17:49:20,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2021-10-08 17:49:20,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496. [2021-10-08 17:49:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 496 states, 403 states have (on average 3.6923076923076925) internal successors, (1488), 495 states have internal predecessors, (1488), 0 states have call successors, (0), 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 17:49:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 1488 transitions. [2021-10-08 17:49:20,567 INFO L78 Accepts]: Start accepts. Automaton has 496 states and 1488 transitions. Word has length 2 [2021-10-08 17:49:20,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:20,567 INFO L470 AbstractCegarLoop]: Abstraction has 496 states and 1488 transitions. [2021-10-08 17:49:20,567 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 17:49:20,568 INFO L276 IsEmpty]: Start isEmpty. Operand 496 states and 1488 transitions. [2021-10-08 17:49:20,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:49:20,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:20,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:49:20,585 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 17:49:20,781 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 17:49:20,782 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:20,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:20,783 INFO L82 PathProgramCache]: Analyzing trace with hash 23638, now seen corresponding path program 1 times [2021-10-08 17:49:20,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:20,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786975044] [2021-10-08 17:49:20,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:20,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:20,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:20,785 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 17:49:20,821 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 17:49:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:20,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:49:20,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:20,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:20,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:21,124 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:49:21,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:49:21,216 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 17:49:21,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:21,313 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 17:49:21,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:21,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786975044] [2021-10-08 17:49:21,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [786975044] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:21,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:21,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:49:21,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485066510] [2021-10-08 17:49:21,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:21,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:21,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:21,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:21,319 INFO L87 Difference]: Start difference. First operand 496 states and 1488 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 17:49:21,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:21,867 INFO L93 Difference]: Finished difference Result 991 states and 2976 transitions. [2021-10-08 17:49:21,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:49:21,869 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 17:49:21,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:21,882 INFO L225 Difference]: With dead ends: 991 [2021-10-08 17:49:21,882 INFO L226 Difference]: Without dead ends: 991 [2021-10-08 17:49:21,888 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:21,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-10-08 17:49:21,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 498. [2021-10-08 17:49:21,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 405 states have (on average 3.6839506172839505) internal successors, (1492), 497 states have internal predecessors, (1492), 0 states have call successors, (0), 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 17:49:21,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 1492 transitions. [2021-10-08 17:49:21,916 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 1492 transitions. Word has length 2 [2021-10-08 17:49:21,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:21,917 INFO L470 AbstractCegarLoop]: Abstraction has 498 states and 1492 transitions. [2021-10-08 17:49:21,917 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 17:49:21,917 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 1492 transitions. [2021-10-08 17:49:21,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:49:21,917 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:21,918 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 17:49:21,933 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 17:49:22,129 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 17:49:22,130 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:22,135 INFO L82 PathProgramCache]: Analyzing trace with hash 22855510, now seen corresponding path program 1 times [2021-10-08 17:49:22,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:22,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1723047281] [2021-10-08 17:49:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:22,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:22,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:22,138 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 17:49:22,144 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 17:49:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:22,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:49:22,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:22,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:22,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:22,440 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:49:22,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:49:22,628 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 17:49:22,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:23,096 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 17:49:23,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:23,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1723047281] [2021-10-08 17:49:23,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1723047281] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:49:23,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:49:23,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:49:23,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468002073] [2021-10-08 17:49:23,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:49:23,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:23,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:49:23,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:49:23,099 INFO L87 Difference]: Start difference. First operand 498 states and 1492 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 17:49:24,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:24,863 INFO L93 Difference]: Finished difference Result 2967 states and 8920 transitions. [2021-10-08 17:49:24,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:49:24,865 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 17:49:24,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:24,895 INFO L225 Difference]: With dead ends: 2967 [2021-10-08 17:49:24,895 INFO L226 Difference]: Without dead ends: 2967 [2021-10-08 17:49:24,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 771.3ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:49:24,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2967 states. [2021-10-08 17:49:24,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2967 to 502. [2021-10-08 17:49:24,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 409 states have (on average 3.667481662591687) internal successors, (1500), 501 states have internal predecessors, (1500), 0 states have call successors, (0), 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 17:49:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 1500 transitions. [2021-10-08 17:49:24,952 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 1500 transitions. Word has length 4 [2021-10-08 17:49:24,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:24,953 INFO L470 AbstractCegarLoop]: Abstraction has 502 states and 1500 transitions. [2021-10-08 17:49:24,953 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 17:49:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 1500 transitions. [2021-10-08 17:49:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:49:24,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:24,954 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 17:49:24,968 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 17:49:25,169 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 17:49:25,170 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:25,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:25,171 INFO L82 PathProgramCache]: Analyzing trace with hash 22887054, now seen corresponding path program 1 times [2021-10-08 17:49:25,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:25,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286024424] [2021-10-08 17:49:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:25,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:25,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:25,174 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 17:49:25,176 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 17:49:25,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:25,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:49:25,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:25,298 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:49:25,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 45 [2021-10-08 17:49:25,459 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 17:49:25,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:25,474 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 17:49:25,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:25,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286024424] [2021-10-08 17:49:25,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286024424] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:25,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:25,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:49:25,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164855611] [2021-10-08 17:49:25,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:25,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:25,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:25,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:25,477 INFO L87 Difference]: Start difference. First operand 502 states and 1500 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 17:49:25,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:25,600 INFO L93 Difference]: Finished difference Result 472 states and 1420 transitions. [2021-10-08 17:49:25,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:25,600 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 17:49:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:25,605 INFO L225 Difference]: With dead ends: 472 [2021-10-08 17:49:25,605 INFO L226 Difference]: Without dead ends: 472 [2021-10-08 17:49:25,605 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-08 17:49:25,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472. [2021-10-08 17:49:25,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 394 states have (on average 3.6040609137055837) internal successors, (1420), 471 states have internal predecessors, (1420), 0 states have call successors, (0), 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 17:49:25,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 1420 transitions. [2021-10-08 17:49:25,623 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 1420 transitions. Word has length 4 [2021-10-08 17:49:25,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:25,624 INFO L470 AbstractCegarLoop]: Abstraction has 472 states and 1420 transitions. [2021-10-08 17:49:25,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 17:49:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 1420 transitions. [2021-10-08 17:49:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:49:25,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:25,625 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 17:49:25,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-08 17:49:25,840 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 17:49:25,841 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:25,841 INFO L82 PathProgramCache]: Analyzing trace with hash 22887056, now seen corresponding path program 1 times [2021-10-08 17:49:25,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:25,842 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392906896] [2021-10-08 17:49:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:25,842 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:25,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:25,844 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 17:49:25,850 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 17:49:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:25,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:49:25,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:26,246 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-08 17:49:26,246 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 5 case distinctions, treesize of input 45 treesize of output 91 [2021-10-08 17:49:26,256 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 93 treesize of output 91 [2021-10-08 17:49:28,803 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 17:49:28,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:28,857 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 17:49:28,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:28,858 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392906896] [2021-10-08 17:49:28,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392906896] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:28,858 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:28,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:49:28,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054623498] [2021-10-08 17:49:28,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:28,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:28,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:28,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:28,861 INFO L87 Difference]: Start difference. First operand 472 states and 1420 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 17:49:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:29,126 INFO L93 Difference]: Finished difference Result 442 states and 1340 transitions. [2021-10-08 17:49:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:29,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 17:49:29,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:29,131 INFO L225 Difference]: With dead ends: 442 [2021-10-08 17:49:29,131 INFO L226 Difference]: Without dead ends: 442 [2021-10-08 17:49:29,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-08 17:49:29,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-10-08 17:49:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 379 states have (on average 3.5356200527704487) internal successors, (1340), 441 states have internal predecessors, (1340), 0 states have call successors, (0), 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 17:49:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1340 transitions. [2021-10-08 17:49:29,148 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1340 transitions. Word has length 4 [2021-10-08 17:49:29,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:29,148 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1340 transitions. [2021-10-08 17:49:29,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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 17:49:29,148 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1340 transitions. [2021-10-08 17:49:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:49:29,149 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:29,149 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:49:29,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-08 17:49:29,361 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 17:49:29,362 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:29,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:29,363 INFO L82 PathProgramCache]: Analyzing trace with hash 709496060, now seen corresponding path program 1 times [2021-10-08 17:49:29,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:29,364 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457913678] [2021-10-08 17:49:29,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:29,365 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:29,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:29,366 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 17:49:29,399 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 17:49:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:29,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 17:49:29,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:29,490 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 17:49:29,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:29,531 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 17:49:29,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:29,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457913678] [2021-10-08 17:49:29,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457913678] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:29,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:29,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:49:29,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554901805] [2021-10-08 17:49:29,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:49:29,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:29,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:49:29,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:49:29,534 INFO L87 Difference]: Start difference. First operand 442 states and 1340 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 17:49:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:29,721 INFO L93 Difference]: Finished difference Result 471 states and 1417 transitions. [2021-10-08 17:49:29,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:49:29,722 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 17:49:29,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:29,727 INFO L225 Difference]: With dead ends: 471 [2021-10-08 17:49:29,727 INFO L226 Difference]: Without dead ends: 459 [2021-10-08 17:49:29,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.3ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:49:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-10-08 17:49:29,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2021-10-08 17:49:29,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 396 states have (on average 3.4873737373737375) internal successors, (1381), 458 states have internal predecessors, (1381), 0 states have call successors, (0), 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 17:49:29,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 1381 transitions. [2021-10-08 17:49:29,744 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 1381 transitions. Word has length 5 [2021-10-08 17:49:29,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:29,744 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 1381 transitions. [2021-10-08 17:49:29,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 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 17:49:29,745 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 1381 transitions. [2021-10-08 17:49:29,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:49:29,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:29,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:49:29,759 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 17:49:29,959 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 17:49:29,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:29,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:29,962 INFO L82 PathProgramCache]: Analyzing trace with hash 490418916, now seen corresponding path program 1 times [2021-10-08 17:49:29,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:29,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628649462] [2021-10-08 17:49:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:29,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:29,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:29,965 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 17:49:29,985 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 17:49:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:30,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 17:49:30,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:30,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:30,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:30,304 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:49:30,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:49:30,500 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 17:49:30,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:31,206 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 17:49:31,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:31,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628649462] [2021-10-08 17:49:31,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628649462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:49:31,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:49:31,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:49:31,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426512291] [2021-10-08 17:49:31,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:49:31,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:31,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:49:31,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:49:31,208 INFO L87 Difference]: Start difference. First operand 459 states and 1381 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 17:49:33,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:33,674 INFO L93 Difference]: Finished difference Result 871 states and 2577 transitions. [2021-10-08 17:49:33,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 17:49:33,676 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 17:49:33,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:33,684 INFO L225 Difference]: With dead ends: 871 [2021-10-08 17:49:33,684 INFO L226 Difference]: Without dead ends: 870 [2021-10-08 17:49:33,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1055.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:49:33,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2021-10-08 17:49:33,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 740. [2021-10-08 17:49:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 672 states have (on average 3.5267857142857144) internal successors, (2370), 739 states have internal predecessors, (2370), 0 states have call successors, (0), 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 17:49:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 2370 transitions. [2021-10-08 17:49:33,714 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 2370 transitions. Word has length 6 [2021-10-08 17:49:33,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:33,715 INFO L470 AbstractCegarLoop]: Abstraction has 740 states and 2370 transitions. [2021-10-08 17:49:33,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 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 17:49:33,715 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 2370 transitions. [2021-10-08 17:49:33,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:49:33,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:33,716 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:49:33,731 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 17:49:33,928 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 17:49:33,929 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:33,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:33,930 INFO L82 PathProgramCache]: Analyzing trace with hash 490418917, now seen corresponding path program 1 times [2021-10-08 17:49:33,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:33,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314674598] [2021-10-08 17:49:33,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:33,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:33,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:33,933 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 17:49:33,934 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 17:49:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:34,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:49:34,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:34,065 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:49:34,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 17:49:34,112 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 17:49:34,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:34,132 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 17:49:34,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:34,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314674598] [2021-10-08 17:49:34,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314674598] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:34,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:34,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-08 17:49:34,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524286653] [2021-10-08 17:49:34,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:34,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:34,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:34,137 INFO L87 Difference]: Start difference. First operand 740 states and 2370 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 17:49:34,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:34,274 INFO L93 Difference]: Finished difference Result 448 states and 1338 transitions. [2021-10-08 17:49:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:49:34,274 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 17:49:34,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:34,278 INFO L225 Difference]: With dead ends: 448 [2021-10-08 17:49:34,278 INFO L226 Difference]: Without dead ends: 448 [2021-10-08 17:49:34,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 25.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:49:34,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-08 17:49:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2021-10-08 17:49:34,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 419 states have (on average 3.1933174224343674) internal successors, (1338), 447 states have internal predecessors, (1338), 0 states have call successors, (0), 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 17:49:34,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1338 transitions. [2021-10-08 17:49:34,295 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1338 transitions. Word has length 6 [2021-10-08 17:49:34,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:34,295 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1338 transitions. [2021-10-08 17:49:34,295 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 17:49:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1338 transitions. [2021-10-08 17:49:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:49:34,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:34,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:49:34,310 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 17:49:34,508 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 17:49:34,508 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:34,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:34,510 INFO L82 PathProgramCache]: Analyzing trace with hash 519640664, now seen corresponding path program 1 times [2021-10-08 17:49:34,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:34,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278557776] [2021-10-08 17:49:34,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:34,511 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:34,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:34,512 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 17:49:34,517 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 17:49:34,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:34,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:49:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:34,658 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:49:34,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 17:49:34,701 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 17:49:34,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:34,721 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 17:49:34,722 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:34,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278557776] [2021-10-08 17:49:34,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278557776] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:34,722 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:34,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:49:34,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656003316] [2021-10-08 17:49:34,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:49:34,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:34,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:49:34,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:49:34,724 INFO L87 Difference]: Start difference. First operand 448 states and 1338 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 17:49:34,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:34,837 INFO L93 Difference]: Finished difference Result 415 states and 1235 transitions. [2021-10-08 17:49:34,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:34,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 17:49:34,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:34,842 INFO L225 Difference]: With dead ends: 415 [2021-10-08 17:49:34,842 INFO L226 Difference]: Without dead ends: 415 [2021-10-08 17:49:34,843 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:49:34,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-10-08 17:49:34,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 415. [2021-10-08 17:49:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 394 states have (on average 3.1345177664974617) internal successors, (1235), 414 states have internal predecessors, (1235), 0 states have call successors, (0), 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 17:49:34,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 1235 transitions. [2021-10-08 17:49:34,860 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 1235 transitions. Word has length 6 [2021-10-08 17:49:34,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:34,861 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 1235 transitions. [2021-10-08 17:49:34,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 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 17:49:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 1235 transitions. [2021-10-08 17:49:34,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:49:34,863 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:34,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:49:34,878 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 17:49:35,075 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 17:49:35,077 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:35,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:35,077 INFO L82 PathProgramCache]: Analyzing trace with hash 519640666, now seen corresponding path program 1 times [2021-10-08 17:49:35,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:35,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908529609] [2021-10-08 17:49:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:49:35,078 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:35,079 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 17:49:35,116 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 17:49:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:49:35,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:49:35,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:35,460 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-08 17:49:35,461 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 5 case distinctions, treesize of input 40 treesize of output 78 [2021-10-08 17:49:35,471 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 81 treesize of output 79 [2021-10-08 17:49:38,081 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 17:49:38,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:38,172 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 17:49:38,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:38,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908529609] [2021-10-08 17:49:38,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908529609] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:38,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:38,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:49:38,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448141406] [2021-10-08 17:49:38,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:49:38,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:38,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:49:38,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:38,174 INFO L87 Difference]: Start difference. First operand 415 states and 1235 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 17:49:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:38,330 INFO L93 Difference]: Finished difference Result 382 states and 1132 transitions. [2021-10-08 17:49:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:49:38,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 17:49:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:38,334 INFO L225 Difference]: With dead ends: 382 [2021-10-08 17:49:38,334 INFO L226 Difference]: Without dead ends: 323 [2021-10-08 17:49:38,334 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2071.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:49:38,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-08 17:49:38,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-08 17:49:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 310 states have (on average 3.1870967741935483) internal successors, (988), 322 states have internal predecessors, (988), 0 states have call successors, (0), 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 17:49:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 988 transitions. [2021-10-08 17:49:38,346 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 988 transitions. Word has length 6 [2021-10-08 17:49:38,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:38,346 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 988 transitions. [2021-10-08 17:49:38,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 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 17:49:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 988 transitions. [2021-10-08 17:49:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 17:49:38,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:38,347 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 17:49:38,363 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 17:49:38,550 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 17:49:38,550 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:38,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:38,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2086714026, now seen corresponding path program 2 times [2021-10-08 17:49:38,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:38,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160208461] [2021-10-08 17:49:38,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:49:38,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:38,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:38,553 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 17:49:38,590 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 17:49:38,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:49:38,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:49:38,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:49:38,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:38,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:38,694 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:38,913 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:49:38,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:49:39,222 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 17:49:39,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:40,633 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 17:49:40,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:40,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160208461] [2021-10-08 17:49:40,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160208461] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:49:40,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:49:40,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:49:40,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471478948] [2021-10-08 17:49:40,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:49:40,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:40,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:49:40,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:49:40,635 INFO L87 Difference]: Start difference. First operand 323 states and 988 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 17:49:48,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:48,858 INFO L93 Difference]: Finished difference Result 2389 states and 7126 transitions. [2021-10-08 17:49:48,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:49:48,860 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 17:49:48,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:48,879 INFO L225 Difference]: With dead ends: 2389 [2021-10-08 17:49:48,879 INFO L226 Difference]: Without dead ends: 2389 [2021-10-08 17:49:48,879 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5406.9ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:49:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2389 states. [2021-10-08 17:49:48,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2389 to 331. [2021-10-08 17:49:48,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 318 states have (on average 3.157232704402516) internal successors, (1004), 330 states have internal predecessors, (1004), 0 states have call successors, (0), 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 17:49:48,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 1004 transitions. [2021-10-08 17:49:48,934 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 1004 transitions. Word has length 8 [2021-10-08 17:49:48,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:48,934 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 1004 transitions. [2021-10-08 17:49:48,934 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 17:49:48,934 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 1004 transitions. [2021-10-08 17:49:48,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:49:48,935 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:48,935 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2021-10-08 17:49:48,948 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-08 17:49:49,148 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 17:49:49,149 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:49,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:49,150 INFO L82 PathProgramCache]: Analyzing trace with hash -262650116, now seen corresponding path program 2 times [2021-10-08 17:49:49,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:49,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [5927904] [2021-10-08 17:49:49,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:49:49,151 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:49,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:49,153 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 17:49:49,154 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 17:49:49,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:49:49,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:49:49,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:49:49,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:49,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:49,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:49,542 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:49:49,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:49:49,704 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 17:49:49,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:50,686 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 17:49:50,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:50,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [5927904] [2021-10-08 17:49:50,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [5927904] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:49:50,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:49:50,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-08 17:49:50,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641779940] [2021-10-08 17:49:50,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:49:50,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:49:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:49:50,688 INFO L87 Difference]: Start difference. First operand 331 states and 1004 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 17:49:50,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:49:50,960 INFO L93 Difference]: Finished difference Result 159 states and 436 transitions. [2021-10-08 17:49:50,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:49:50,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 9 [2021-10-08 17:49:50,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:49:50,962 INFO L225 Difference]: With dead ends: 159 [2021-10-08 17:49:50,962 INFO L226 Difference]: Without dead ends: 159 [2021-10-08 17:49:50,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 218.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-08 17:49:50,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2021-10-08 17:49:50,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 96. [2021-10-08 17:49:50,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 94 states have (on average 2.5851063829787235) internal successors, (243), 95 states have internal predecessors, (243), 0 states have call successors, (0), 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 17:49:50,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 243 transitions. [2021-10-08 17:49:50,967 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 243 transitions. Word has length 9 [2021-10-08 17:49:50,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:49:50,967 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 243 transitions. [2021-10-08 17:49:50,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 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 17:49:50,968 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 243 transitions. [2021-10-08 17:49:50,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:49:50,969 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:49:50,969 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-08 17:49:50,983 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-08 17:49:51,180 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 17:49:51,181 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:49:51,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:49:51,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1737183574, now seen corresponding path program 3 times [2021-10-08 17:49:51,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:49:51,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068666677] [2021-10-08 17:49:51,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:49:51,184 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:49:51,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:49:51,185 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 17:49:51,194 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 17:49:51,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 17:49:51,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:49:51,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:49:51,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:49:51,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:51,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:49:51,773 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:49:51,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:49:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:49:52,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:49:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:49:58,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:49:58,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068666677] [2021-10-08 17:49:58,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068666677] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:49:58,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:49:58,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 17:49:58,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480468725] [2021-10-08 17:49:58,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 17:49:58,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:49:58,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 17:49:58,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:49:58,334 INFO L87 Difference]: Start difference. First operand 96 states and 243 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 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 17:50:08,811 WARN L207 SmtUtils]: Spent 7.77 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 17:50:15,873 WARN L207 SmtUtils]: Spent 6.31 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 17:50:50,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:50,998 INFO L93 Difference]: Finished difference Result 2245 states and 6026 transitions. [2021-10-08 17:50:50,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:50:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 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 16 [2021-10-08 17:50:51,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:51,015 INFO L225 Difference]: With dead ends: 2245 [2021-10-08 17:50:51,015 INFO L226 Difference]: Without dead ends: 2245 [2021-10-08 17:50:51,016 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 48394.5ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:50:51,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2021-10-08 17:50:51,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 112. [2021-10-08 17:50:51,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 110 states have (on average 2.5) internal successors, (275), 111 states have internal predecessors, (275), 0 states have call successors, (0), 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 17:50:51,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 275 transitions. [2021-10-08 17:50:51,038 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 275 transitions. Word has length 16 [2021-10-08 17:50:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:51,038 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 275 transitions. [2021-10-08 17:50:51,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 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 17:50:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 275 transitions. [2021-10-08 17:50:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:50:51,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:51,040 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:51,055 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 17:50:51,240 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 17:50:51,241 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:50:51,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:51,242 INFO L82 PathProgramCache]: Analyzing trace with hash 298997944, now seen corresponding path program 1 times [2021-10-08 17:50:51,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:51,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732320749] [2021-10-08 17:50:51,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:50:51,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:51,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:51,246 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 17:50:51,251 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 17:50:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:50:51,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:50:51,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:51,538 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:50:51,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:50:51,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:50:51,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:50:51,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732320749] [2021-10-08 17:50:51,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732320749] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:50:51,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:50:51,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-08 17:50:51,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869718027] [2021-10-08 17:50:51,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-08 17:50:51,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:50:51,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-08 17:50:51,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:50:51,629 INFO L87 Difference]: Start difference. First operand 112 states and 275 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 17:50:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:50:51,695 INFO L93 Difference]: Finished difference Result 92 states and 201 transitions. [2021-10-08 17:50:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 17:50:51,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 21 [2021-10-08 17:50:51,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:50:51,697 INFO L225 Difference]: With dead ends: 92 [2021-10-08 17:50:51,697 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 17:50:51,698 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-08 17:50:51,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 17:50:51,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-08 17:50:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 2.2333333333333334) internal successors, (201), 91 states have internal predecessors, (201), 0 states have call successors, (0), 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 17:50:51,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 201 transitions. [2021-10-08 17:50:51,701 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 201 transitions. Word has length 21 [2021-10-08 17:50:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:50:51,702 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 201 transitions. [2021-10-08 17:50:51,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 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 17:50:51,702 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 201 transitions. [2021-10-08 17:50:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:50:51,703 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:50:51,703 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:50:51,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-10-08 17:50:51,916 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 17:50:51,917 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 31 more)] === [2021-10-08 17:50:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:50:51,917 INFO L82 PathProgramCache]: Analyzing trace with hash -739639454, now seen corresponding path program 2 times [2021-10-08 17:50:51,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:50:51,918 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598011599] [2021-10-08 17:50:51,918 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:50:51,918 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:50:51,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:50:51,919 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 17:50:51,956 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 17:50:52,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:50:52,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:50:52,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 37 conjunts are in the unsatisfiable core [2021-10-08 17:50:52,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:50:52,228 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 20 treesize of output 18 [2021-10-08 17:50:52,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:50:52,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:50:52,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:50:52,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:50:52,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:50:52,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:50:59,294 WARN L207 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 157 DAG size of output: 42 [2021-10-08 17:50:59,295 INFO L354 Elim1Store]: treesize reduction 1157, result has 6.2 percent of original size [2021-10-08 17:50:59,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 81 treesize of output 101 [2021-10-08 17:51:03,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:51:03,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:51:03,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:51:03,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:51:03,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:51:03,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:54:28,089 WARN L207 SmtUtils]: Spent 3.40 m on a formula simplification. DAG size of input: 351 DAG size of output: 127 [2021-10-08 17:54:28,091 INFO L354 Elim1Store]: treesize reduction 1950, result has 18.2 percent of original size [2021-10-08 17:54:28,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 123 treesize of output 480 [2021-10-08 17:58:15,110 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 101 [2021-10-08 17:58:15,110 WARN L228 Executor]: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-10-08 17:58:15,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:58:15,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598011599] [2021-10-08 17:58:15,112 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-10-08 17:58:15,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [751483132] [2021-10-08 17:58:15,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:15,113 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-08 17:58:15,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 [2021-10-08 17:58:15,114 INFO L229 MonitoredProcess]: Starting monitored process 19 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 17:58:15,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2021-10-08 17:58:15,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:58:15,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:58:15,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 17:58:15,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:58:15,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-10-08 17:58:15,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529238416] [2021-10-08 17:58:15,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:58:15,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-08 17:58:15,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:58:15,807 INFO L229 MonitoredProcess]: Starting monitored process 20 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 17:58:15,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process Received shutdown request... [2021-10-08 18:03:13,459 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:03:13,459 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:03:13,459 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 18:03:14,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:03:14,498 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 18:03:14,662 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forcibly destroying the process [2021-10-08 18:03:14,716 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-08 18:03:14,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:03:14,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-10-08 18:03:14,716 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-10-08 18:03:14,717 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-10-08 18:03:14,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 137 [2021-10-08 18:03:14,722 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2REQUIRES_VIOLATION [2021-10-08 18:03:14,725 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:03:14,726 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:03:14,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:03:14,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 18:03:14,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 18:03:14,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 18:03:14,727 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 18:03:14,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 18:03:14,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 18:03:14,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:03:14,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:03:14,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:03:14,728 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 18:03:14,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err0REQUIRES_VIOLATION [2021-10-08 18:03:14,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread1Err1REQUIRES_VIOLATION [2021-10-08 18:03:14,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATION [2021-10-08 18:03:14,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATION [2021-10-08 18:03:14,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATION [2021-10-08 18:03:14,729 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATION [2021-10-08 18:03:14,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err2REQUIRES_VIOLATION [2021-10-08 18:03:14,730 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err3REQUIRES_VIOLATION [2021-10-08 18:03:14,737 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:03:14,737 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:03:14,738 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 18:03:14,741 INFO L168 Benchmark]: Toolchain (without parser) took 864039.63 ms. Allocated memory was 170.9 MB in the beginning and 206.6 MB in the end (delta: 35.7 MB). Free memory was 124.0 MB in the beginning and 139.9 MB in the end (delta: -15.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:03:14,742 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 170.9 MB. Free memory is still 140.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:03:14,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 436.61 ms. Allocated memory is still 170.9 MB. Free memory was 123.3 MB in the beginning and 109.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:03:14,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.24 ms. Allocated memory is still 170.9 MB. Free memory was 109.7 MB in the beginning and 107.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 18:03:14,743 INFO L168 Benchmark]: Boogie Preprocessor took 131.88 ms. Allocated memory is still 170.9 MB. Free memory was 107.6 MB in the beginning and 151.9 MB in the end (delta: -44.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-10-08 18:03:14,743 INFO L168 Benchmark]: RCFGBuilder took 1153.66 ms. Allocated memory is still 170.9 MB. Free memory was 151.9 MB in the beginning and 122.5 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2021-10-08 18:03:14,744 INFO L168 Benchmark]: TraceAbstraction took 862206.28 ms. Allocated memory was 170.9 MB in the beginning and 206.6 MB in the end (delta: 35.7 MB). Free memory was 122.0 MB in the beginning and 139.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2021-10-08 18:03:14,746 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 170.9 MB. Free memory is still 140.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 436.61 ms. Allocated memory is still 170.9 MB. Free memory was 123.3 MB in the beginning and 109.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 86.24 ms. Allocated memory is still 170.9 MB. Free memory was 109.7 MB in the beginning and 107.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 131.88 ms. Allocated memory is still 170.9 MB. Free memory was 107.6 MB in the beginning and 151.9 MB in the end (delta: -44.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1153.66 ms. Allocated memory is still 170.9 MB. Free memory was 151.9 MB in the beginning and 122.5 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 862206.28 ms. Allocated memory was 170.9 MB in the beginning and 206.6 MB in the end (delta: 35.7 MB). Free memory was 122.0 MB in the beginning and 139.9 MB in the end (delta: -17.9 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23687.4ms, 175 PlacesBefore, 56 PlacesAfterwards, 176 TransitionsBefore, 49 TransitionsAfterwards, 3462 CoEnabledTransitionPairs, 7 FixpointIterations, 83 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 8 TrivialYvCompositions, 3 ConcurrentYvCompositions, 8 ChoiceCompositions, 175 TotalNumberOfCompositions, 4160 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3519, positive: 3465, positive conditional: 0, positive unconditional: 3465, negative: 54, negative conditional: 0, negative unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1975, positive: 1957, positive conditional: 0, positive unconditional: 1957, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1975, positive: 1956, positive conditional: 0, positive unconditional: 1956, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 18, negative conditional: 0, negative unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 667, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 658, negative conditional: 0, negative unconditional: 658, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3519, positive: 1508, positive conditional: 0, positive unconditional: 1508, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 1975, unknown conditional: 0, unknown unconditional: 1975] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - 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. Completed graceful shutdown