/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/chl-array-int-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:20:57,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:20:57,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:20:57,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:20:57,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:20:57,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:20:57,267 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:20:57,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:20:57,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:20:57,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:20:57,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:20:57,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:20:57,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:20:57,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:20:57,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:20:57,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:20:57,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:20:57,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:20:57,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:20:57,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:20:57,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:20:57,361 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:20:57,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:20:57,362 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:20:57,362 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:20:57,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:20:57,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:20:57,365 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:20:57,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:20:57,365 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:20:57,366 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:20:57,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:20:57,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:20:57,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:20:57,368 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:20:57,368 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:20:57,368 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:20:57,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:20:57,368 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:20:57,369 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:20:57,369 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:20:57,369 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:20:57,369 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:20:57,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:20:57,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:20:57,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:20:57,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:57,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:20:57,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:20:57,371 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:20:57,371 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:20:57,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:20:57,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:20:57,372 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:20:57,794 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:20:57,820 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:20:57,823 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:20:57,824 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:20:57,825 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:20:57,826 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2021-10-07 15:20:57,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/046ea0b59/dc9b0fdb9b46484ab12f6fde6b0d8d5a/FLAG8f5c50e5a [2021-10-07 15:20:58,586 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:20:58,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-array-int-symm.wvr.c [2021-10-07 15:20:58,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/046ea0b59/dc9b0fdb9b46484ab12f6fde6b0d8d5a/FLAG8f5c50e5a [2021-10-07 15:20:58,905 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/046ea0b59/dc9b0fdb9b46484ab12f6fde6b0d8d5a [2021-10-07 15:20:58,908 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:20:58,917 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:20:58,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:58,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:20:58,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:20:58,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eca1526 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:58, skipping insertion in model container [2021-10-07 15:20:58,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:20:58" (1/1) ... [2021-10-07 15:20:58,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:20:58,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,136 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/chl-array-int-symm.wvr.c[2441,2454] [2021-10-07 15:20:59,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,181 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:20:59,186 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:20:59,203 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/chl-array-int-symm.wvr.c[2441,2454] [2021-10-07 15:20:59,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,214 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:20:59,240 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/chl-array-int-symm.wvr.c[2441,2454] [2021-10-07 15:20:59,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:20:59,262 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:20:59,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59 WrapperNode [2021-10-07 15:20:59,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:20:59,264 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,264 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:20:59,264 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:20:59,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,312 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:20:59,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:20:59,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:20:59,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:20:59,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:20:59,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:20:59,395 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:20:59,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (1/1) ... [2021-10-07 15:20:59,408 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:20:59,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:20:59,440 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) [2021-10-07 15:20:59,448 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 [2021-10-07 15:20:59,503 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:20:59,504 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:20:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:20:59,505 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:20:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:20:59,505 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:20:59,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:20:59,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:20:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:20:59,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:20:59,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:20:59,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:20:59,514 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:21:00,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:21:00,311 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-10-07 15:21:00,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00 BoogieIcfgContainer [2021-10-07 15:21:00,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:21:00,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:21:00,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:21:00,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:21:00,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:20:58" (1/3) ... [2021-10-07 15:21:00,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f50b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:20:59" (2/3) ... [2021-10-07 15:21:00,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b9f50b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:21:00, skipping insertion in model container [2021-10-07 15:21:00,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:21:00" (3/3) ... [2021-10-07 15:21:00,325 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-array-int-symm.wvr.c [2021-10-07 15:21:00,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:21:00,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2021-10-07 15:21:00,332 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:21:00,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,418 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,418 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,418 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,419 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,422 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,422 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,423 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,423 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,424 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,424 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,425 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,428 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,428 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,429 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,429 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,430 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,433 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,434 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,435 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,436 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,436 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,436 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,437 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,437 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,437 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,438 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,441 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,442 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,442 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,442 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,443 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,443 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,443 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,443 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,444 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,449 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,449 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,452 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,453 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,453 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,453 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,453 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,454 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,457 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,457 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,458 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,458 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,459 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,462 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,463 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,464 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,468 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,469 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,471 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,472 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,472 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,472 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,473 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,473 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,474 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,475 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,475 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,476 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,476 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,477 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,485 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,485 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,486 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,487 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,492 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,493 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,494 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,494 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:21:00,500 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:21:00,574 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:21:00,586 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 [2021-10-07 15:21:00,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2021-10-07 15:21:00,619 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:21:00,633 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 210 transitions, 436 flow [2021-10-07 15:21:00,637 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 210 transitions, 436 flow [2021-10-07 15:21:00,639 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 200 places, 210 transitions, 436 flow [2021-10-07 15:21:00,773 INFO L129 PetriNetUnfolder]: 17/208 cut-off events. [2021-10-07 15:21:00,773 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:21:00,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 17/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 347 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 136. Up to 3 conditions per place. [2021-10-07 15:21:00,788 INFO L116 LiptonReduction]: Number of co-enabled transitions 3348 [2021-10-07 15:21:31,218 INFO L131 LiptonReduction]: Checked pairs total: 6131 [2021-10-07 15:21:31,218 INFO L133 LiptonReduction]: Total number of compositions: 242 [2021-10-07 15:21:31,229 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 55 transitions, 126 flow [2021-10-07 15:21:31,277 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:31,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:21:31,289 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:31,289 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:21:31,290 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:31,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:31,295 INFO L82 PathProgramCache]: Analyzing trace with hash 26360, now seen corresponding path program 1 times [2021-10-07 15:21:31,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:31,309 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185220114] [2021-10-07 15:21:31,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:31,310 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:31,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:31,313 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) [2021-10-07 15:21:31,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:21:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:31,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:21:31,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:31,504 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:21:31,505 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:21:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:31,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:31,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:31,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:31,560 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185220114] [2021-10-07 15:21:31,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185220114] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:31,561 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:31,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:21:31,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638973169] [2021-10-07 15:21:31,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:21:31,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:31,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:21:31,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:31,621 INFO L87 Difference]: Start difference. First operand has 729 states, 443 states have (on average 4.417607223476298) internal successors, (1957), 728 states have internal predecessors, (1957), 0 states have call successors, (0), 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) [2021-10-07 15:21:31,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:31,915 INFO L93 Difference]: Finished difference Result 486 states and 1290 transitions. [2021-10-07 15:21:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:31,917 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 [2021-10-07 15:21:31,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:31,936 INFO L225 Difference]: With dead ends: 486 [2021-10-07 15:21:31,937 INFO L226 Difference]: Without dead ends: 486 [2021-10-07 15:21:31,938 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:21:31,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-07 15:21:32,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2021-10-07 15:21:32,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 319 states have (on average 4.043887147335423) internal successors, (1290), 485 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:32,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1290 transitions. [2021-10-07 15:21:32,028 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1290 transitions. Word has length 2 [2021-10-07 15:21:32,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:32,028 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1290 transitions. [2021-10-07 15:21:32,029 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) [2021-10-07 15:21:32,029 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1290 transitions. [2021-10-07 15:21:32,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:21:32,029 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:32,029 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:21:32,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:32,242 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 [2021-10-07 15:21:32,243 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:32,245 INFO L82 PathProgramCache]: Analyzing trace with hash 26361, now seen corresponding path program 1 times [2021-10-07 15:21:32,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:32,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140775421] [2021-10-07 15:21:32,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:32,246 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:32,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:32,250 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) [2021-10-07 15:21:32,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:21:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:32,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:32,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:32,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:32,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:32,552 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:21:32,553 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 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:21:32,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:32,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:32,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140775421] [2021-10-07 15:21:32,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140775421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:32,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:32,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:32,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029156845] [2021-10-07 15:21:32,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:32,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:32,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:32,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:32,775 INFO L87 Difference]: Start difference. First operand 486 states and 1290 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) [2021-10-07 15:21:33,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:33,621 INFO L93 Difference]: Finished difference Result 971 states and 2583 transitions. [2021-10-07 15:21:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:21:33,625 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 [2021-10-07 15:21:33,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:33,634 INFO L225 Difference]: With dead ends: 971 [2021-10-07 15:21:33,635 INFO L226 Difference]: Without dead ends: 971 [2021-10-07 15:21:33,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 93.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:33,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2021-10-07 15:21:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 490. [2021-10-07 15:21:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 323 states have (on average 4.030959752321982) internal successors, (1302), 489 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1302 transitions. [2021-10-07 15:21:33,676 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1302 transitions. Word has length 2 [2021-10-07 15:21:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:33,676 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1302 transitions. [2021-10-07 15:21:33,676 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) [2021-10-07 15:21:33,676 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1302 transitions. [2021-10-07 15:21:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:33,677 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:33,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:33,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-07 15:21:33,887 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 [2021-10-07 15:21:33,888 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:33,890 INFO L82 PathProgramCache]: Analyzing trace with hash 823136, now seen corresponding path program 1 times [2021-10-07 15:21:33,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:33,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669757458] [2021-10-07 15:21:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:33,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:33,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:33,893 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) [2021-10-07 15:21:33,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:21:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:33,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:21:33,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:34,024 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:21:34,025 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 3 case distinctions, treesize of input 30 treesize of output 37 [2021-10-07 15:21:34,167 INFO L354 Elim1Store]: treesize reduction 30, result has 36.2 percent of original size [2021-10-07 15:21:34,168 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 3 case distinctions, treesize of input 29 treesize of output 40 [2021-10-07 15:21:34,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:34,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:34,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:34,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669757458] [2021-10-07 15:21:34,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669757458] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:34,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:34,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:34,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103211128] [2021-10-07 15:21:34,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:34,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:34,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:34,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:34,281 INFO L87 Difference]: Start difference. First operand 490 states and 1302 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) [2021-10-07 15:21:34,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:34,531 INFO L93 Difference]: Finished difference Result 391 states and 998 transitions. [2021-10-07 15:21:34,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:34,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:21:34,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:34,536 INFO L225 Difference]: With dead ends: 391 [2021-10-07 15:21:34,536 INFO L226 Difference]: Without dead ends: 391 [2021-10-07 15:21:34,536 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 73.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:34,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-10-07 15:21:34,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-10-07 15:21:34,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 270 states have (on average 3.696296296296296) internal successors, (998), 390 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:34,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 998 transitions. [2021-10-07 15:21:34,553 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 998 transitions. Word has length 3 [2021-10-07 15:21:34,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:34,553 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 998 transitions. [2021-10-07 15:21:34,554 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) [2021-10-07 15:21:34,554 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 998 transitions. [2021-10-07 15:21:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:21:34,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:34,554 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:21:34,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:34,770 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 [2021-10-07 15:21:34,771 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:34,772 INFO L82 PathProgramCache]: Analyzing trace with hash 823138, now seen corresponding path program 1 times [2021-10-07 15:21:34,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:34,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484244960] [2021-10-07 15:21:34,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:34,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:34,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:34,775 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) [2021-10-07 15:21:34,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:21:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:34,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:21:34,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:35,057 INFO L354 Elim1Store]: treesize reduction 145, result has 24.9 percent of original size [2021-10-07 15:21:35,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 68 [2021-10-07 15:21:35,078 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 69 treesize of output 67 [2021-10-07 15:21:35,263 INFO L354 Elim1Store]: treesize reduction 36, result has 29.4 percent of original size [2021-10-07 15:21:35,263 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 3 case distinctions, treesize of input 30 treesize of output 39 [2021-10-07 15:21:35,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:35,457 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:35,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:35,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:35,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484244960] [2021-10-07 15:21:35,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484244960] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:35,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:35,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:21:35,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801842029] [2021-10-07 15:21:35,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:35,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:35,589 INFO L87 Difference]: Start difference. First operand 391 states and 998 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:35,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:35,977 INFO L93 Difference]: Finished difference Result 292 states and 694 transitions. [2021-10-07 15:21:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:35,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:21:35,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:35,981 INFO L225 Difference]: With dead ends: 292 [2021-10-07 15:21:35,981 INFO L226 Difference]: Without dead ends: 292 [2021-10-07 15:21:35,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 152.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:35,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-07 15:21:35,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 292. [2021-10-07 15:21:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 217 states have (on average 3.19815668202765) internal successors, (694), 291 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:35,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 694 transitions. [2021-10-07 15:21:35,993 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 694 transitions. Word has length 3 [2021-10-07 15:21:35,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:35,994 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 694 transitions. [2021-10-07 15:21:35,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 694 transitions. [2021-10-07 15:21:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:21:35,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:35,994 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:21:36,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:36,209 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 [2021-10-07 15:21:36,210 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:36,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:36,211 INFO L82 PathProgramCache]: Analyzing trace with hash 25474137, now seen corresponding path program 1 times [2021-10-07 15:21:36,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:36,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [564341452] [2021-10-07 15:21:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:36,213 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:36,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:36,214 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) [2021-10-07 15:21:36,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:21:36,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:36,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:21:36,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:36,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:36,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:36,474 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:21:36,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:21:36,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:36,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:37,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:37,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [564341452] [2021-10-07 15:21:37,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [564341452] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:37,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:37,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:21:37,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202855252] [2021-10-07 15:21:37,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:37,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:37,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:37,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:37,117 INFO L87 Difference]: Start difference. First operand 292 states and 694 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) [2021-10-07 15:21:43,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:43,043 INFO L93 Difference]: Finished difference Result 1715 states and 4105 transitions. [2021-10-07 15:21:43,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:21:43,045 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 [2021-10-07 15:21:43,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:43,058 INFO L225 Difference]: With dead ends: 1715 [2021-10-07 15:21:43,058 INFO L226 Difference]: Without dead ends: 1715 [2021-10-07 15:21:43,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 784.0ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:43,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2021-10-07 15:21:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 300. [2021-10-07 15:21:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 225 states have (on average 3.1555555555555554) internal successors, (710), 299 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 710 transitions. [2021-10-07 15:21:43,084 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 710 transitions. Word has length 4 [2021-10-07 15:21:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:43,084 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 710 transitions. [2021-10-07 15:21:43,084 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) [2021-10-07 15:21:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 710 transitions. [2021-10-07 15:21:43,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:21:43,085 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:43,085 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:21:43,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:43,298 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 [2021-10-07 15:21:43,299 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:43,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:43,299 INFO L82 PathProgramCache]: Analyzing trace with hash 791052598, now seen corresponding path program 1 times [2021-10-07 15:21:43,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:43,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371971342] [2021-10-07 15:21:43,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:43,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:43,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:43,302 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) [2021-10-07 15:21:43,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:21:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:43,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:21:43,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:43,551 INFO L354 Elim1Store]: treesize reduction 149, result has 22.8 percent of original size [2021-10-07 15:21:43,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 64 [2021-10-07 15:21:43,563 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 66 treesize of output 64 [2021-10-07 15:21:45,827 INFO L354 Elim1Store]: treesize reduction 64, result has 27.3 percent of original size [2021-10-07 15:21:45,828 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2021-10-07 15:21:48,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:48,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:48,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:48,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:48,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371971342] [2021-10-07 15:21:48,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371971342] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:48,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:48,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:21:48,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58855790] [2021-10-07 15:21:48,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:21:48,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:48,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:21:48,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:21:48,637 INFO L87 Difference]: Start difference. First operand 300 states and 710 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) [2021-10-07 15:21:50,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:50,075 INFO L93 Difference]: Finished difference Result 279 states and 667 transitions. [2021-10-07 15:21:50,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:50,082 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 [2021-10-07 15:21:50,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:50,085 INFO L225 Difference]: With dead ends: 279 [2021-10-07 15:21:50,085 INFO L226 Difference]: Without dead ends: 279 [2021-10-07 15:21:50,085 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2894.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:21:50,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2021-10-07 15:21:50,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 279. [2021-10-07 15:21:50,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 218 states have (on average 3.0596330275229358) internal successors, (667), 278 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:50,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 667 transitions. [2021-10-07 15:21:50,095 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 667 transitions. Word has length 5 [2021-10-07 15:21:50,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:50,096 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 667 transitions. [2021-10-07 15:21:50,096 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) [2021-10-07 15:21:50,096 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 667 transitions. [2021-10-07 15:21:50,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:21:50,096 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:50,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:21:50,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:50,310 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 [2021-10-07 15:21:50,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:50,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:50,312 INFO L82 PathProgramCache]: Analyzing trace with hash 791052600, now seen corresponding path program 1 times [2021-10-07 15:21:50,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:50,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913319421] [2021-10-07 15:21:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:50,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:50,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:50,315 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) [2021-10-07 15:21:50,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:21:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:50,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:21:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:50,427 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:21:50,428 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 2 case distinctions, treesize of input 28 treesize of output 35 [2021-10-07 15:21:50,520 INFO L354 Elim1Store]: treesize reduction 57, result has 30.5 percent of original size [2021-10-07 15:21:50,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 60 [2021-10-07 15:21:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:50,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:50,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:50,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913319421] [2021-10-07 15:21:50,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913319421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:50,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:50,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:21:50,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57061056] [2021-10-07 15:21:50,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:21:50,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:50,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:21:50,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:50,698 INFO L87 Difference]: Start difference. First operand 279 states and 667 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 15:21:50,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:50,904 INFO L93 Difference]: Finished difference Result 258 states and 624 transitions. [2021-10-07 15:21:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:21:50,904 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 [2021-10-07 15:21:50,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:50,907 INFO L225 Difference]: With dead ends: 258 [2021-10-07 15:21:50,908 INFO L226 Difference]: Without dead ends: 258 [2021-10-07 15:21:50,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:21:50,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-07 15:21:50,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2021-10-07 15:21:50,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 211 states have (on average 2.957345971563981) internal successors, (624), 257 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:50,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 624 transitions. [2021-10-07 15:21:50,917 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 624 transitions. Word has length 5 [2021-10-07 15:21:50,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:50,917 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 624 transitions. [2021-10-07 15:21:50,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-07 15:21:50,918 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 624 transitions. [2021-10-07 15:21:50,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-07 15:21:50,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:50,918 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-07 15:21:50,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:51,130 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 [2021-10-07 15:21:51,131 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:51,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:51,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1247175742, now seen corresponding path program 1 times [2021-10-07 15:21:51,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:51,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651279296] [2021-10-07 15:21:51,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:51,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:51,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:51,135 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) [2021-10-07 15:21:51,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:21:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:51,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:21:51,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:51,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:51,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:51,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:51,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:51,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651279296] [2021-10-07 15:21:51,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651279296] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:51,336 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:51,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:21:51,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108594495] [2021-10-07 15:21:51,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:51,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:51,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:51,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:51,338 INFO L87 Difference]: Start difference. First operand 258 states and 624 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) [2021-10-07 15:21:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:51,744 INFO L93 Difference]: Finished difference Result 331 states and 771 transitions. [2021-10-07 15:21:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:21:51,745 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 [2021-10-07 15:21:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:51,748 INFO L225 Difference]: With dead ends: 331 [2021-10-07 15:21:51,748 INFO L226 Difference]: Without dead ends: 331 [2021-10-07 15:21:51,748 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-10-07 15:21:51,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 298. [2021-10-07 15:21:51,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 251 states have (on average 2.860557768924303) internal successors, (718), 297 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:51,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 718 transitions. [2021-10-07 15:21:51,760 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 718 transitions. Word has length 6 [2021-10-07 15:21:51,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:51,760 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 718 transitions. [2021-10-07 15:21:51,760 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) [2021-10-07 15:21:51,760 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 718 transitions. [2021-10-07 15:21:51,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:21:51,761 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:51,761 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:21:51,773 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:51,973 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 [2021-10-07 15:21:51,974 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:51,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:51,975 INFO L82 PathProgramCache]: Analyzing trace with hash -1262972755, now seen corresponding path program 1 times [2021-10-07 15:21:51,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:51,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86827998] [2021-10-07 15:21:51,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:21:51,976 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:51,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:51,977 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) [2021-10-07 15:21:51,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:21:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:21:52,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:21:52,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:52,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:21:52,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:52,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:21:52,246 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:52,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86827998] [2021-10-07 15:21:52,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86827998] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:21:52,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:21:52,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:21:52,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923775356] [2021-10-07 15:21:52,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:21:52,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:52,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:21:52,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:21:52,249 INFO L87 Difference]: Start difference. First operand 298 states and 718 transitions. Second operand has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2021-10-07 15:21:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:21:52,725 INFO L93 Difference]: Finished difference Result 396 states and 929 transitions. [2021-10-07 15:21:52,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:21:52,726 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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 7 [2021-10-07 15:21:52,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:21:52,730 INFO L225 Difference]: With dead ends: 396 [2021-10-07 15:21:52,730 INFO L226 Difference]: Without dead ends: 396 [2021-10-07 15:21:52,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 95.0ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:21:52,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-07 15:21:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 298. [2021-10-07 15:21:52,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 251 states have (on average 2.860557768924303) internal successors, (718), 297 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:21:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 718 transitions. [2021-10-07 15:21:52,741 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 718 transitions. Word has length 7 [2021-10-07 15:21:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:21:52,742 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 718 transitions. [2021-10-07 15:21:52,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 8 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) [2021-10-07 15:21:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 718 transitions. [2021-10-07 15:21:52,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:21:52,743 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:21:52,743 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-07 15:21:52,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:21:52,955 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 [2021-10-07 15:21:52,955 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:21:52,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:21:52,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1794521319, now seen corresponding path program 2 times [2021-10-07 15:21:52,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:21:52,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504019946] [2021-10-07 15:21:52,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:21:52,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:21:52,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:21:52,959 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) [2021-10-07 15:21:52,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:21:53,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:21:53,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:21:53,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:21:53,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:21:53,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:53,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:21:53,218 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:21:53,219 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 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:21:53,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:53,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:21:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:21:54,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:21:54,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504019946] [2021-10-07 15:21:54,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504019946] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:21:54,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:21:54,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 15:21:54,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021291505] [2021-10-07 15:21:54,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:21:54,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:21:54,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:21:54,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:21:54,978 INFO L87 Difference]: Start difference. First operand 298 states and 718 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) [2021-10-07 15:22:16,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:16,748 INFO L93 Difference]: Finished difference Result 2571 states and 6258 transitions. [2021-10-07 15:22:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:22:16,751 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 [2021-10-07 15:22:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:16,769 INFO L225 Difference]: With dead ends: 2571 [2021-10-07 15:22:16,769 INFO L226 Difference]: Without dead ends: 2571 [2021-10-07 15:22:16,770 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 6167.8ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:22:16,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2021-10-07 15:22:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 314. [2021-10-07 15:22:16,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 267 states have (on average 2.808988764044944) internal successors, (750), 313 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:16,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 750 transitions. [2021-10-07 15:22:16,801 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 750 transitions. Word has length 8 [2021-10-07 15:22:16,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:16,802 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 750 transitions. [2021-10-07 15:22:16,802 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) [2021-10-07 15:22:16,802 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 750 transitions. [2021-10-07 15:22:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:22:16,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:16,804 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:16,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:17,016 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 [2021-10-07 15:22:17,016 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:17,017 INFO L82 PathProgramCache]: Analyzing trace with hash -510544413, now seen corresponding path program 1 times [2021-10-07 15:22:17,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:17,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2014835188] [2021-10-07 15:22:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:17,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:17,024 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) [2021-10-07 15:22:17,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:22:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:17,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:22:17,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:17,240 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:22:17,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:22:17,397 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:22:17,398 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 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 15:22:17,451 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:22:17,451 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 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 15:22:17,581 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:22:17,582 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 1 case distinctions, treesize of input 41 treesize of output 43 [2021-10-07 15:22:17,593 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:22:17,594 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 40 treesize of output 40 [2021-10-07 15:22:17,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:17,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:18,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:18,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2014835188] [2021-10-07 15:22:18,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2014835188] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:18,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:18,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:22:18,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776499437] [2021-10-07 15:22:18,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:18,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:18,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:18,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:18,460 INFO L87 Difference]: Start difference. First operand 314 states and 750 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-10-07 15:22:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:39,371 INFO L93 Difference]: Finished difference Result 3343 states and 8023 transitions. [2021-10-07 15:22:39,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:22:39,373 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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 [2021-10-07 15:22:39,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:39,395 INFO L225 Difference]: With dead ends: 3343 [2021-10-07 15:22:39,395 INFO L226 Difference]: Without dead ends: 3343 [2021-10-07 15:22:39,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 17736.6ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:22:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2021-10-07 15:22:39,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 342. [2021-10-07 15:22:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 300 states have (on average 2.9233333333333333) internal successors, (877), 341 states have internal predecessors, (877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 877 transitions. [2021-10-07 15:22:39,432 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 877 transitions. Word has length 8 [2021-10-07 15:22:39,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:39,433 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 877 transitions. [2021-10-07 15:22:39,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 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) [2021-10-07 15:22:39,434 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 877 transitions. [2021-10-07 15:22:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:22:39,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:39,434 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:39,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:39,647 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 [2021-10-07 15:22:39,647 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -510544412, now seen corresponding path program 1 times [2021-10-07 15:22:39,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:39,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1212798709] [2021-10-07 15:22:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:39,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:39,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:39,651 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) [2021-10-07 15:22:39,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:22:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:39,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:22:39,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:39,840 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:22:39,840 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 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-07 15:22:39,895 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 15:22:39,897 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 2 case distinctions, treesize of input 25 treesize of output 32 [2021-10-07 15:22:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:22:39,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:22:42,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:42,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1212798709] [2021-10-07 15:22:42,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1212798709] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:42,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:42,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:22:42,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536595254] [2021-10-07 15:22:42,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:22:42,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:22:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2021-10-07 15:22:42,068 INFO L87 Difference]: Start difference. First operand 342 states and 877 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-10-07 15:22:42,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:42,286 INFO L93 Difference]: Finished difference Result 278 states and 696 transitions. [2021-10-07 15:22:42,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:22:42,287 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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 [2021-10-07 15:22:42,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:42,288 INFO L225 Difference]: With dead ends: 278 [2021-10-07 15:22:42,288 INFO L226 Difference]: Without dead ends: 278 [2021-10-07 15:22:42,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2063.6ms TimeCoverageRelationStatistics Valid=17, Invalid=24, Unknown=1, NotChecked=0, Total=42 [2021-10-07 15:22:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-07 15:22:42,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2021-10-07 15:22:42,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 252 states have (on average 2.761904761904762) internal successors, (696), 277 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:42,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 696 transitions. [2021-10-07 15:22:42,296 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 696 transitions. Word has length 8 [2021-10-07 15:22:42,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:42,297 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 696 transitions. [2021-10-07 15:22:42,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 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) [2021-10-07 15:22:42,297 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 696 transitions. [2021-10-07 15:22:42,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:22:42,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:42,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:42,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-07 15:22:42,510 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 [2021-10-07 15:22:42,510 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:42,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:42,511 INFO L82 PathProgramCache]: Analyzing trace with hash -510544311, now seen corresponding path program 1 times [2021-10-07 15:22:42,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:42,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9025687] [2021-10-07 15:22:42,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:42,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:42,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:42,514 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) [2021-10-07 15:22:42,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 15:22:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:42,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:22:42,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:42,640 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 0 case distinctions, treesize of input 6 treesize of output 5 [2021-10-07 15:22:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:22:42,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 15:22:42,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:42,688 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9025687] [2021-10-07 15:22:42,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9025687] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:42,689 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:42,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 15:22:42,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290756958] [2021-10-07 15:22:42,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:22:42,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:42,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:22:42,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:22:42,690 INFO L87 Difference]: Start difference. First operand 278 states and 696 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-07 15:22:42,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:42,862 INFO L93 Difference]: Finished difference Result 222 states and 539 transitions. [2021-10-07 15:22:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:22:42,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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 8 [2021-10-07 15:22:42,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:42,865 INFO L225 Difference]: With dead ends: 222 [2021-10-07 15:22:42,865 INFO L226 Difference]: Without dead ends: 222 [2021-10-07 15:22:42,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:22:42,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-07 15:22:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-10-07 15:22:42,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 208 states have (on average 2.5913461538461537) internal successors, (539), 221 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:42,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 539 transitions. [2021-10-07 15:22:42,872 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 539 transitions. Word has length 8 [2021-10-07 15:22:42,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:42,873 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 539 transitions. [2021-10-07 15:22:42,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 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) [2021-10-07 15:22:42,873 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 539 transitions. [2021-10-07 15:22:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:22:42,874 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:42,874 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:42,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:43,085 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 [2021-10-07 15:22:43,086 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:43,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:43,087 INFO L82 PathProgramCache]: Analyzing trace with hash -510544310, now seen corresponding path program 1 times [2021-10-07 15:22:43,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:43,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737929585] [2021-10-07 15:22:43,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:43,088 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:43,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:43,089 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) [2021-10-07 15:22:43,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 15:22:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:43,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:43,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:43,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:43,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:43,582 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 25 treesize of output 21 [2021-10-07 15:22:43,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:43,667 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:43,667 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737929585] [2021-10-07 15:22:43,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737929585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:43,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:43,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:22:43,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055975164] [2021-10-07 15:22:43,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:43,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:43,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:43,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:43,669 INFO L87 Difference]: Start difference. First operand 222 states and 539 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:44,994 INFO L93 Difference]: Finished difference Result 634 states and 1487 transitions. [2021-10-07 15:22:45,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:22:45,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-07 15:22:45,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:45,006 INFO L225 Difference]: With dead ends: 634 [2021-10-07 15:22:45,006 INFO L226 Difference]: Without dead ends: 634 [2021-10-07 15:22:45,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 653.3ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:22:45,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2021-10-07 15:22:45,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 222. [2021-10-07 15:22:45,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 211 states have (on average 2.6113744075829386) internal successors, (551), 221 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:45,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 551 transitions. [2021-10-07 15:22:45,016 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 551 transitions. Word has length 8 [2021-10-07 15:22:45,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:45,016 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 551 transitions. [2021-10-07 15:22:45,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 551 transitions. [2021-10-07 15:22:45,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:22:45,017 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:45,017 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:45,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:45,229 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 [2021-10-07 15:22:45,230 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:45,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:45,231 INFO L82 PathProgramCache]: Analyzing trace with hash -237023952, now seen corresponding path program 1 times [2021-10-07 15:22:45,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:45,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1280069209] [2021-10-07 15:22:45,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:45,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:45,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:45,234 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) [2021-10-07 15:22:45,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 15:22:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:45,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:22:45,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:45,399 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 15:22:45,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:45,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:45,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:45,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1280069209] [2021-10-07 15:22:45,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1280069209] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:45,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:45,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:22:45,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052733678] [2021-10-07 15:22:45,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:22:45,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:45,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:22:45,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:22:45,866 INFO L87 Difference]: Start difference. First operand 222 states and 551 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:46,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:46,470 INFO L93 Difference]: Finished difference Result 394 states and 1017 transitions. [2021-10-07 15:22:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:22:46,471 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 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 [2021-10-07 15:22:46,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:46,474 INFO L225 Difference]: With dead ends: 394 [2021-10-07 15:22:46,474 INFO L226 Difference]: Without dead ends: 394 [2021-10-07 15:22:46,475 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 346.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:22:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-07 15:22:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 278. [2021-10-07 15:22:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 267 states have (on average 3.059925093632959) internal successors, (817), 277 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:46,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 817 transitions. [2021-10-07 15:22:46,484 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 817 transitions. Word has length 8 [2021-10-07 15:22:46,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:46,484 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 817 transitions. [2021-10-07 15:22:46,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 8 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:46,485 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 817 transitions. [2021-10-07 15:22:46,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-07 15:22:46,485 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:46,485 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:46,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:46,697 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 [2021-10-07 15:22:46,698 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:46,699 INFO L82 PathProgramCache]: Analyzing trace with hash -237023997, now seen corresponding path program 1 times [2021-10-07 15:22:46,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:46,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41223404] [2021-10-07 15:22:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:46,700 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:46,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:46,701 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) [2021-10-07 15:22:46,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 15:22:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:46,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:46,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:46,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:46,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:22:46,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:46,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41223404] [2021-10-07 15:22:46,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41223404] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:46,952 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:46,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:22:46,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982565163] [2021-10-07 15:22:46,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:22:46,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:46,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:22:46,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:22:46,954 INFO L87 Difference]: Start difference. First operand 278 states and 817 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-07 15:22:47,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:47,205 INFO L93 Difference]: Finished difference Result 312 states and 873 transitions. [2021-10-07 15:22:47,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:22:47,206 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 [2021-10-07 15:22:47,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:47,208 INFO L225 Difference]: With dead ends: 312 [2021-10-07 15:22:47,208 INFO L226 Difference]: Without dead ends: 312 [2021-10-07 15:22:47,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 53.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:22:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-07 15:22:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 301. [2021-10-07 15:22:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 290 states have (on average 2.972413793103448) internal successors, (862), 300 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 862 transitions. [2021-10-07 15:22:47,218 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 862 transitions. Word has length 8 [2021-10-07 15:22:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:47,218 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 862 transitions. [2021-10-07 15:22:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-07 15:22:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 862 transitions. [2021-10-07 15:22:47,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-07 15:22:47,219 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:47,219 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:47,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:47,431 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 [2021-10-07 15:22:47,431 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:47,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1761915694, now seen corresponding path program 1 times [2021-10-07 15:22:47,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:47,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820390585] [2021-10-07 15:22:47,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:47,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:47,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:47,435 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) [2021-10-07 15:22:47,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 15:22:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:47,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:22:47,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:47,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:47,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:47,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:47,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:47,716 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820390585] [2021-10-07 15:22:47,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [820390585] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:22:47,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:22:47,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:22:47,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338922380] [2021-10-07 15:22:47,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:22:47,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:47,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:22:47,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:22:47,718 INFO L87 Difference]: Start difference. First operand 301 states and 862 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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) [2021-10-07 15:22:48,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:22:48,049 INFO L93 Difference]: Finished difference Result 328 states and 874 transitions. [2021-10-07 15:22:48,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:22:48,050 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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 9 [2021-10-07 15:22:48,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:22:48,051 INFO L225 Difference]: With dead ends: 328 [2021-10-07 15:22:48,051 INFO L226 Difference]: Without dead ends: 328 [2021-10-07 15:22:48,052 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 94.3ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:48,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-10-07 15:22:48,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 272. [2021-10-07 15:22:48,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 261 states have (on average 2.9616858237547894) internal successors, (773), 271 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:22:48,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 773 transitions. [2021-10-07 15:22:48,060 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 773 transitions. Word has length 9 [2021-10-07 15:22:48,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:22:48,061 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 773 transitions. [2021-10-07 15:22:48,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 8 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) [2021-10-07 15:22:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 773 transitions. [2021-10-07 15:22:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:22:48,061 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:22:48,061 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:22:48,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 15:22:48,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:22:48,270 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:22:48,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:22:48,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1003920668, now seen corresponding path program 1 times [2021-10-07 15:22:48,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:22:48,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053374450] [2021-10-07 15:22:48,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:22:48,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:22:48,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:22:48,273 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:22:48,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 15:22:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:22:48,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:22:48,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:22:48,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:22:48,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:22:48,649 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:22:48,650 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 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 15:22:48,693 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:22:48,693 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 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 15:22:48,843 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:22:48,844 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 1 case distinctions, treesize of input 42 treesize of output 44 [2021-10-07 15:22:48,856 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:22:48,856 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 41 treesize of output 41 [2021-10-07 15:22:49,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:49,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:22:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:22:49,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:22:49,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053374450] [2021-10-07 15:22:49,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053374450] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:22:49,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:22:49,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-07 15:22:49,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673546799] [2021-10-07 15:22:49,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:22:49,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:22:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:22:49,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:22:49,684 INFO L87 Difference]: Start difference. First operand 272 states and 773 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:08,711 INFO L93 Difference]: Finished difference Result 1825 states and 5029 transitions. [2021-10-07 15:23:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 15:23:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:23:08,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:08,724 INFO L225 Difference]: With dead ends: 1825 [2021-10-07 15:23:08,724 INFO L226 Difference]: Without dead ends: 1825 [2021-10-07 15:23:08,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 16941.1ms TimeCoverageRelationStatistics Valid=310, Invalid=880, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 15:23:08,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2021-10-07 15:23:08,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 318. [2021-10-07 15:23:08,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 307 states have (on average 2.9218241042345277) internal successors, (897), 317 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:08,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 897 transitions. [2021-10-07 15:23:08,747 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 897 transitions. Word has length 10 [2021-10-07 15:23:08,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:08,747 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 897 transitions. [2021-10-07 15:23:08,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:08,748 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 897 transitions. [2021-10-07 15:23:08,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-07 15:23:08,748 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:08,748 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:08,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:08,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:08,961 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:08,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:08,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1006883939, now seen corresponding path program 1 times [2021-10-07 15:23:08,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:08,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151512464] [2021-10-07 15:23:08,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:08,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:08,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:08,964 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:08,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 15:23:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:09,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:23:09,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:09,304 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:09,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:09,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:09,468 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:09,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151512464] [2021-10-07 15:23:09,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151512464] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:09,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:09,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:09,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062916264] [2021-10-07 15:23:09,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:09,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:09,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:09,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:09,470 INFO L87 Difference]: Start difference. First operand 318 states and 897 transitions. Second operand has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:10,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:10,224 INFO L93 Difference]: Finished difference Result 552 states and 1460 transitions. [2021-10-07 15:23:10,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:10,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-07 15:23:10,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:10,229 INFO L225 Difference]: With dead ends: 552 [2021-10-07 15:23:10,229 INFO L226 Difference]: Without dead ends: 552 [2021-10-07 15:23:10,230 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 201.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:23:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-10-07 15:23:10,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 392. [2021-10-07 15:23:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 381 states have (on average 2.9658792650918637) internal successors, (1130), 391 states have internal predecessors, (1130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1130 transitions. [2021-10-07 15:23:10,241 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1130 transitions. Word has length 10 [2021-10-07 15:23:10,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:10,241 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 1130 transitions. [2021-10-07 15:23:10,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:10,242 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1130 transitions. [2021-10-07 15:23:10,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:23:10,242 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:10,242 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:10,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:10,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:10,445 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:10,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:10,446 INFO L82 PathProgramCache]: Analyzing trace with hash 161677998, now seen corresponding path program 2 times [2021-10-07 15:23:10,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:10,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75250247] [2021-10-07 15:23:10,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:10,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:10,450 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:10,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 15:23:10,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:23:10,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:10,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 15:23:10,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:10,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:10,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:10,762 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:23:10,763 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 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 15:23:10,807 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:23:10,807 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 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 15:23:10,949 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:23:10,949 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 1 case distinctions, treesize of input 30 treesize of output 32 [2021-10-07 15:23:10,960 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:23:10,961 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 29 treesize of output 29 [2021-10-07 15:23:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:23:11,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:11,914 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-10-07 15:23:11,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:11,915 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75250247] [2021-10-07 15:23:11,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75250247] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:11,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:11,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:23:11,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769405919] [2021-10-07 15:23:11,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:11,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:11,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:11,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:11,917 INFO L87 Difference]: Start difference. First operand 392 states and 1130 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-07 15:23:12,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:12,838 INFO L93 Difference]: Finished difference Result 566 states and 1613 transitions. [2021-10-07 15:23:12,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:23:12,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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 11 [2021-10-07 15:23:12,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:12,843 INFO L225 Difference]: With dead ends: 566 [2021-10-07 15:23:12,843 INFO L226 Difference]: Without dead ends: 566 [2021-10-07 15:23:12,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 513.9ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:23:12,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-07 15:23:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 416. [2021-10-07 15:23:12,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 405 states have (on average 3.05679012345679) internal successors, (1238), 415 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:12,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1238 transitions. [2021-10-07 15:23:12,856 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1238 transitions. Word has length 11 [2021-10-07 15:23:12,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:12,857 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1238 transitions. [2021-10-07 15:23:12,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 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) [2021-10-07 15:23:12,857 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1238 transitions. [2021-10-07 15:23:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:23:12,858 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:12,858 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:12,875 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-07 15:23:13,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:13,070 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:13,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:13,071 INFO L82 PathProgramCache]: Analyzing trace with hash 123777903, now seen corresponding path program 1 times [2021-10-07 15:23:13,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:13,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722087043] [2021-10-07 15:23:13,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:13,072 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:13,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:13,074 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:13,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 15:23:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:13,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:23:13,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:13,280 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 15:23:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:23:13,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:23:14,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:14,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722087043] [2021-10-07 15:23:14,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722087043] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:14,096 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:14,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:23:14,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639646491] [2021-10-07 15:23:14,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:14,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:14,098 INFO L87 Difference]: Start difference. First operand 416 states and 1238 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:15,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:15,603 INFO L93 Difference]: Finished difference Result 934 states and 2671 transitions. [2021-10-07 15:23:15,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:23:15,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-07 15:23:15,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:15,608 INFO L225 Difference]: With dead ends: 934 [2021-10-07 15:23:15,608 INFO L226 Difference]: Without dead ends: 934 [2021-10-07 15:23:15,609 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 913.4ms TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:23:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2021-10-07 15:23:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 504. [2021-10-07 15:23:15,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 493 states have (on average 3.2454361054766734) internal successors, (1600), 503 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:15,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1600 transitions. [2021-10-07 15:23:15,639 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1600 transitions. Word has length 11 [2021-10-07 15:23:15,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:15,641 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1600 transitions. [2021-10-07 15:23:15,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:15,641 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1600 transitions. [2021-10-07 15:23:15,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:23:15,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:15,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:15,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:15,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:15,855 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:15,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1056765122, now seen corresponding path program 1 times [2021-10-07 15:23:15,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:15,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397553455] [2021-10-07 15:23:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:15,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:15,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:15,859 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:15,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 15:23:16,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:16,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:23:16,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:16,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:16,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:16,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397553455] [2021-10-07 15:23:16,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397553455] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:16,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:16,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:23:16,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072298067] [2021-10-07 15:23:16,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:23:16,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:16,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:23:16,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:23:16,391 INFO L87 Difference]: Start difference. First operand 504 states and 1600 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:16,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:16,893 INFO L93 Difference]: Finished difference Result 600 states and 1718 transitions. [2021-10-07 15:23:16,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:16,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 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 11 [2021-10-07 15:23:16,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:16,899 INFO L225 Difference]: With dead ends: 600 [2021-10-07 15:23:16,899 INFO L226 Difference]: Without dead ends: 600 [2021-10-07 15:23:16,900 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 169.9ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:23:16,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-10-07 15:23:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 504. [2021-10-07 15:23:16,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 493 states have (on average 3.1663286004056794) internal successors, (1561), 503 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:16,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1561 transitions. [2021-10-07 15:23:16,916 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1561 transitions. Word has length 11 [2021-10-07 15:23:16,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:16,916 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1561 transitions. [2021-10-07 15:23:16,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:16,917 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1561 transitions. [2021-10-07 15:23:16,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:23:16,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:16,918 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:16,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:17,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:17,131 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:17,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:17,133 INFO L82 PathProgramCache]: Analyzing trace with hash -365989581, now seen corresponding path program 2 times [2021-10-07 15:23:17,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:17,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902748187] [2021-10-07 15:23:17,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:17,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:17,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:17,137 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:17,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 15:23:17,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:17,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:17,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:23:17,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:17,532 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:23:17,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 15:23:17,576 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:23:17,576 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 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 15:23:21,561 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:23:21,561 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 1 case distinctions, treesize of input 35 treesize of output 35 [2021-10-07 15:23:21,572 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:23:21,572 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 34 treesize of output 34 [2021-10-07 15:23:23,953 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:23,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:24,756 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:23:24,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:24,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902748187] [2021-10-07 15:23:24,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902748187] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:24,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:24,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:23:24,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752742405] [2021-10-07 15:23:24,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:23:24,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:24,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:23:24,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:24,758 INFO L87 Difference]: Start difference. First operand 504 states and 1561 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:29,463 INFO L93 Difference]: Finished difference Result 1169 states and 3280 transitions. [2021-10-07 15:23:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:23:29,465 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-07 15:23:29,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:29,469 INFO L225 Difference]: With dead ends: 1169 [2021-10-07 15:23:29,469 INFO L226 Difference]: Without dead ends: 1169 [2021-10-07 15:23:29,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 8551.2ms TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:23:29,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2021-10-07 15:23:29,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 398. [2021-10-07 15:23:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 387 states have (on average 3.005167958656331) internal successors, (1163), 397 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1163 transitions. [2021-10-07 15:23:29,486 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1163 transitions. Word has length 12 [2021-10-07 15:23:29,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:29,486 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 1163 transitions. [2021-10-07 15:23:29,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:29,486 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1163 transitions. [2021-10-07 15:23:29,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:23:29,487 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:29,487 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:29,502 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-07 15:23:29,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:29,700 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:29,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:29,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1539229436, now seen corresponding path program 1 times [2021-10-07 15:23:29,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:29,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1761778817] [2021-10-07 15:23:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:29,703 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:29,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:29,704 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:29,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 15:23:29,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:29,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 15:23:29,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:29,981 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 15:23:30,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:30,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:31,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:31,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1761778817] [2021-10-07 15:23:31,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1761778817] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:31,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:31,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:23:31,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91713974] [2021-10-07 15:23:31,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:23:31,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:31,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:23:31,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:23:31,118 INFO L87 Difference]: Start difference. First operand 398 states and 1163 transitions. Second operand has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:33,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:33,081 INFO L93 Difference]: Finished difference Result 796 states and 2214 transitions. [2021-10-07 15:23:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:33,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:23:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:33,086 INFO L225 Difference]: With dead ends: 796 [2021-10-07 15:23:33,086 INFO L226 Difference]: Without dead ends: 796 [2021-10-07 15:23:33,087 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1168.4ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:23:33,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-10-07 15:23:33,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 495. [2021-10-07 15:23:33,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 484 states have (on average 3.1074380165289255) internal successors, (1504), 494 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:33,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1504 transitions. [2021-10-07 15:23:33,103 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1504 transitions. Word has length 13 [2021-10-07 15:23:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:33,103 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 1504 transitions. [2021-10-07 15:23:33,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1504 transitions. [2021-10-07 15:23:33,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:23:33,104 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:33,104 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:23:33,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-07 15:23:33,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:33,318 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:33,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:33,319 INFO L82 PathProgramCache]: Analyzing trace with hash -1308593278, now seen corresponding path program 2 times [2021-10-07 15:23:33,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:33,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184449812] [2021-10-07 15:23:33,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:33,320 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:33,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:33,321 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:33,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 15:23:33,556 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:33,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:33,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 15:23:33,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:33,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:33,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:33,742 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:23:33,743 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 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 15:23:33,790 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:23:33,791 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 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 15:23:33,893 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:23:33,894 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 1 case distinctions, treesize of input 33 treesize of output 35 [2021-10-07 15:23:33,905 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:23:33,906 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 32 treesize of output 32 [2021-10-07 15:23:38,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:23:38,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 15:23:39,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:39,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184449812] [2021-10-07 15:23:39,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1184449812] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:39,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:39,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:23:39,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194218692] [2021-10-07 15:23:39,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:23:39,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:39,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:23:39,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:39,838 INFO L87 Difference]: Start difference. First operand 495 states and 1504 transitions. Second operand has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:45,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:45,162 INFO L93 Difference]: Finished difference Result 1181 states and 3160 transitions. [2021-10-07 15:23:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:23:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:23:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:45,167 INFO L225 Difference]: With dead ends: 1181 [2021-10-07 15:23:45,167 INFO L226 Difference]: Without dead ends: 1181 [2021-10-07 15:23:45,168 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 7999.8ms TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2021-10-07 15:23:45,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1181 states. [2021-10-07 15:23:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1181 to 591. [2021-10-07 15:23:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 580 states have (on average 3.2) internal successors, (1856), 590 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:45,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 1856 transitions. [2021-10-07 15:23:45,186 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 1856 transitions. Word has length 13 [2021-10-07 15:23:45,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:45,186 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 1856 transitions. [2021-10-07 15:23:45,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:45,187 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 1856 transitions. [2021-10-07 15:23:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:23:45,188 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:45,188 INFO L512 BasicCegarLoop]: trace histogram [10, 1, 1, 1] [2021-10-07 15:23:45,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 15:23:45,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:23:45,399 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:23:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1863388338, now seen corresponding path program 1 times [2021-10-07 15:23:45,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:45,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723150005] [2021-10-07 15:23:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:45,401 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:45,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:45,402 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:23:45,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 15:23:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:45,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:23:45,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:45,654 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 15:23:46,117 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:46,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:49,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:49,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:49,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723150005] [2021-10-07 15:23:49,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723150005] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:49,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:49,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-10-07 15:23:49,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861900954] [2021-10-07 15:23:49,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 15:23:49,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 15:23:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2021-10-07 15:23:49,716 INFO L87 Difference]: Start difference. First operand 591 states and 1856 transitions. Second operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:39,188 INFO L93 Difference]: Finished difference Result 8601 states and 26957 transitions. [2021-10-07 15:24:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 15:24:39,190 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 15:24:39,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:39,225 INFO L225 Difference]: With dead ends: 8601 [2021-10-07 15:24:39,225 INFO L226 Difference]: Without dead ends: 8601 [2021-10-07 15:24:39,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 19583.1ms TimeCoverageRelationStatistics Valid=406, Invalid=716, Unknown=0, NotChecked=0, Total=1122 [2021-10-07 15:24:39,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8601 states. [2021-10-07 15:24:39,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8601 to 627. [2021-10-07 15:24:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 616 states have (on average 3.1298701298701297) internal successors, (1928), 626 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:39,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 1928 transitions. [2021-10-07 15:24:39,320 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 1928 transitions. Word has length 13 [2021-10-07 15:24:39,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:39,321 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 1928 transitions. [2021-10-07 15:24:39,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:39,321 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 1928 transitions. [2021-10-07 15:24:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:24:39,322 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:39,322 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:39,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:39,536 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:24:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:39,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1631901584, now seen corresponding path program 2 times [2021-10-07 15:24:39,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:39,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707181112] [2021-10-07 15:24:39,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:24:39,537 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:39,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:39,538 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:39,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 15:24:39,852 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:24:39,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:39,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:24:39,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:39,893 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 15:24:40,201 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:24:40,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:41,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:24:41,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:41,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707181112] [2021-10-07 15:24:41,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707181112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:41,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:41,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-07 15:24:41,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338376781] [2021-10-07 15:24:41,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:24:41,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:41,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:24:41,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:24:41,278 INFO L87 Difference]: Start difference. First operand 627 states and 1928 transitions. Second operand has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:46,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:46,837 INFO L93 Difference]: Finished difference Result 1434 states and 4150 transitions. [2021-10-07 15:24:46,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:24:46,838 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 15:24:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:46,843 INFO L225 Difference]: With dead ends: 1434 [2021-10-07 15:24:46,844 INFO L226 Difference]: Without dead ends: 1434 [2021-10-07 15:24:46,844 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 3078.8ms TimeCoverageRelationStatistics Valid=189, Invalid=567, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:24:46,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2021-10-07 15:24:46,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 787. [2021-10-07 15:24:46,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 776 states have (on average 3.551546391752577) internal successors, (2756), 786 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2756 transitions. [2021-10-07 15:24:46,870 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2756 transitions. Word has length 14 [2021-10-07 15:24:46,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:46,871 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2756 transitions. [2021-10-07 15:24:46,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:46,871 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2756 transitions. [2021-10-07 15:24:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:24:46,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:46,872 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:46,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:47,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:47,087 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:24:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:47,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1631901539, now seen corresponding path program 3 times [2021-10-07 15:24:47,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:47,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396979112] [2021-10-07 15:24:47,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:24:47,090 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:47,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:47,091 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:47,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 15:24:47,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:24:47,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:24:47,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 15:24:47,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:47,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:24:47,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:24:47,633 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:24:47,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 71 [2021-10-07 15:24:47,680 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-07 15:24:47,680 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 2 case distinctions, treesize of input 71 treesize of output 80 [2021-10-07 15:24:47,868 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-10-07 15:24:47,869 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 1 case distinctions, treesize of input 38 treesize of output 38 [2021-10-07 15:24:47,884 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-10-07 15:24:47,884 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 37 treesize of output 37 [2021-10-07 15:24:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:24:48,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:24:50,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:50,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396979112] [2021-10-07 15:24:50,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396979112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:24:50,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:24:50,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 15:24:50,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863918621] [2021-10-07 15:24:50,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:24:50,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:24:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:24:50,020 INFO L87 Difference]: Start difference. First operand 787 states and 2756 transitions. Second operand has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:56,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:56,031 INFO L93 Difference]: Finished difference Result 1131 states and 3300 transitions. [2021-10-07 15:24:56,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 15:24:56,033 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 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 14 [2021-10-07 15:24:56,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:56,039 INFO L225 Difference]: With dead ends: 1131 [2021-10-07 15:24:56,039 INFO L226 Difference]: Without dead ends: 1131 [2021-10-07 15:24:56,039 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 3458.3ms TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2021-10-07 15:24:56,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2021-10-07 15:24:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 787. [2021-10-07 15:24:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 776 states have (on average 3.345360824742268) internal successors, (2596), 786 states have internal predecessors, (2596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 2596 transitions. [2021-10-07 15:24:56,063 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 2596 transitions. Word has length 14 [2021-10-07 15:24:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:56,063 INFO L470 AbstractCegarLoop]: Abstraction has 787 states and 2596 transitions. [2021-10-07 15:24:56,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 2596 transitions. [2021-10-07 15:24:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:24:56,064 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:56,064 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:24:56,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 15:24:56,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:24:56,279 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:24:56,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:56,280 INFO L82 PathProgramCache]: Analyzing trace with hash -953012524, now seen corresponding path program 1 times [2021-10-07 15:24:56,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:56,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55637] [2021-10-07 15:24:56,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:56,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:56,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:56,282 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:24:56,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 15:24:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:56,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 15:24:56,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:57,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:24:57,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:58,304 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-07 15:24:58,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 312 treesize of output 372 [2021-10-07 15:24:58,356 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:24:58,357 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 372 treesize of output 376 [2021-10-07 15:24:58,404 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:24:58,405 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 376 treesize of output 380 [2021-10-07 15:25:10,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:10,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:10,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55637] [2021-10-07 15:25:10,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55637] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:10,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:10,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-10-07 15:25:10,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052033697] [2021-10-07 15:25:10,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:25:10,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:10,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:25:10,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:25:10,821 INFO L87 Difference]: Start difference. First operand 787 states and 2596 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:12,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:12,706 INFO L93 Difference]: Finished difference Result 912 states and 2801 transitions. [2021-10-07 15:25:12,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:25:12,707 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 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 15 [2021-10-07 15:25:12,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:12,709 INFO L225 Difference]: With dead ends: 912 [2021-10-07 15:25:12,709 INFO L226 Difference]: Without dead ends: 834 [2021-10-07 15:25:12,710 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1973.2ms TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2021-10-07 15:25:12,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-10-07 15:25:12,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 792. [2021-10-07 15:25:12,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 781 states have (on average 3.330345710627401) internal successors, (2601), 791 states have internal predecessors, (2601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:12,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2601 transitions. [2021-10-07 15:25:12,731 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2601 transitions. Word has length 15 [2021-10-07 15:25:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:12,731 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 2601 transitions. [2021-10-07 15:25:12,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:25:12,732 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2601 transitions. [2021-10-07 15:25:12,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:25:12,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:12,733 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-07 15:25:12,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 15:25:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:25:12,946 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:25:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:12,946 INFO L82 PathProgramCache]: Analyzing trace with hash 669895833, now seen corresponding path program 3 times [2021-10-07 15:25:12,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:12,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [864444376] [2021-10-07 15:25:12,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:25:12,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:12,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:12,949 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:25:12,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 15:25:13,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-07 15:25:13,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:25:13,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-07 15:25:13,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:13,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:25:13,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:25:13,681 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:25:13,681 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 4 case distinctions, treesize of input 20 treesize of output 59 [2021-10-07 15:25:14,494 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:14,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:25:20,614 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:20,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [864444376] [2021-10-07 15:25:20,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [864444376] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:25:20,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:25:20,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-07 15:25:20,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15683733] [2021-10-07 15:25:20,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-07 15:25:20,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-07 15:25:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-07 15:25:20,615 INFO L87 Difference]: Start difference. First operand 792 states and 2601 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) [2021-10-07 15:25:34,003 WARN L207 SmtUtils]: Spent 9.23 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-07 15:25:41,430 WARN L207 SmtUtils]: Spent 6.48 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-07 15:25:47,654 WARN L207 SmtUtils]: Spent 5.11 s on a formula simplification that was a NOOP. DAG size: 146 [2021-10-07 15:26:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:26:43,982 INFO L93 Difference]: Finished difference Result 9363 states and 32110 transitions. [2021-10-07 15:26:43,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:26:43,984 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 [2021-10-07 15:26:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:26:44,008 INFO L225 Difference]: With dead ends: 9363 [2021-10-07 15:26:44,009 INFO L226 Difference]: Without dead ends: 9363 [2021-10-07 15:26:44,010 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 50068.1ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-07 15:26:44,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2021-10-07 15:26:44,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 808. [2021-10-07 15:26:44,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 797 states have (on average 3.3036386449184443) internal successors, (2633), 807 states have internal predecessors, (2633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:26:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 2633 transitions. [2021-10-07 15:26:44,097 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 2633 transitions. Word has length 16 [2021-10-07 15:26:44,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:26:44,097 INFO L470 AbstractCegarLoop]: Abstraction has 808 states and 2633 transitions. [2021-10-07 15:26:44,098 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) [2021-10-07 15:26:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 2633 transitions. [2021-10-07 15:26:44,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:26:44,099 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:26:44,099 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:26:44,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 15:26:44,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:26:44,313 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 44 more)] === [2021-10-07 15:26:44,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:26:44,314 INFO L82 PathProgramCache]: Analyzing trace with hash 388010569, now seen corresponding path program 1 times [2021-10-07 15:26:44,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:26:44,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [127010366] [2021-10-07 15:26:44,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:26:44,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:26:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:26:44,317 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:26:44,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 15:26:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:26:44,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-07 15:26:44,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:26:44,746 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 0 case distinctions, treesize of input 8 treesize of output 7 [2021-10-07 15:26:45,329 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 43 treesize of output 41 [2021-10-07 15:26:45,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:26:45,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:46,537 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-07 15:26:46,537 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 305 treesize of output 365 [2021-10-07 15:26:46,572 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:26:46,572 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 365 treesize of output 369 Received shutdown request... [2021-10-07 15:35:02,384 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-07 15:35:02,387 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:35:02,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 15:35:02,418 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:35:02,418 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:35:02,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:35:02,591 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. [2021-10-07 15:35:02,594 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:35:02,594 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:35:02,594 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 15:35:02,594 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 15:35:02,594 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 15:35:02,594 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-07 15:35:02,595 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:35:02,596 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 15:35:02,597 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err4REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err6REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err7REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err4REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err5REQUIRES_VIOLATION [2021-10-07 15:35:02,598 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err6REQUIRES_VIOLATION [2021-10-07 15:35:02,599 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err7REQUIRES_VIOLATION [2021-10-07 15:35:02,605 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:35:02,605 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:35:02,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:35:02 BasicIcfg [2021-10-07 15:35:02,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:35:02,608 INFO L168 Benchmark]: Toolchain (without parser) took 843698.31 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 136.7 MB in the beginning and 84.8 MB in the end (delta: 51.9 MB). Peak memory consumption was 133.9 MB. Max. memory is 8.0 GB. [2021-10-07 15:35:02,608 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:35:02,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 344.97 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 123.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:35:02,609 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.34 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 121.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:35:02,609 INFO L168 Benchmark]: Boogie Preprocessor took 80.51 ms. Allocated memory is still 161.5 MB. Free memory was 121.4 MB in the beginning and 119.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:35:02,610 INFO L168 Benchmark]: RCFGBuilder took 919.00 ms. Allocated memory is still 161.5 MB. Free memory was 119.6 MB in the beginning and 134.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:35:02,610 INFO L168 Benchmark]: TraceAbstraction took 842291.63 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 133.6 MB in the beginning and 84.8 MB in the end (delta: 48.8 MB). Peak memory consumption was 130.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:35:02,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 161.5 MB. Free memory is still 131.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 344.97 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 123.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.34 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 121.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 80.51 ms. Allocated memory is still 161.5 MB. Free memory was 121.4 MB in the beginning and 119.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 919.00 ms. Allocated memory is still 161.5 MB. Free memory was 119.6 MB in the beginning and 134.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 842291.63 ms. Allocated memory was 161.5 MB in the beginning and 194.0 MB in the end (delta: 32.5 MB). Free memory was 133.6 MB in the beginning and 84.8 MB in the end (delta: 48.8 MB). Peak memory consumption was 130.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 30581.7ms, 200 PlacesBefore, 57 PlacesAfterwards, 210 TransitionsBefore, 55 TransitionsAfterwards, 3348 CoEnabledTransitionPairs, 7 FixpointIterations, 114 TrivialSequentialCompositions, 79 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 8 ConcurrentYvCompositions, 12 ChoiceCompositions, 242 TotalNumberOfCompositions, 6131 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5120, positive: 5004, positive conditional: 0, positive unconditional: 5004, negative: 116, negative conditional: 0, negative unconditional: 116, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2242, positive: 2216, positive conditional: 0, positive unconditional: 2216, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2242, positive: 2216, positive conditional: 0, positive unconditional: 2216, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 26, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1395, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1395, negative conditional: 0, negative unconditional: 1395, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5120, positive: 2788, positive conditional: 0, positive unconditional: 2788, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 2242, unknown conditional: 0, unknown unconditional: 2242] , Statistics on independence cache: Total cache size (in pairs): 226, Positive cache size: 215, Positive conditional cache size: 0, Positive unconditional cache size: 215, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11 - 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 - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 17 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 4ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 254 locations, 48 error locations. Started 1 CEGAR loops. OverallTime: 842032.5ms, OverallIterations: 31, TraceHistogramMax: 14, EmptinessCheckTime: 32.9ms, AutomataDifference: 237178.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 30690.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 956 SDtfs, 13299 SDslu, 5188 SDs, 0 SdLazy, 13287 SolverSat, 1299 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 117904.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 626 GetRequests, 208 SyntacticMatches, 5 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1309 ImplicationChecksByTransitivity, 145950.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=808occurred in iteration=30, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 716.9ms AutomataMinimizationTime, 30 MinimizatonAttempts, 29447 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 256.7ms SsaConstructionTime, 2073.6ms SatisfiabilityAnalysisTime, 63372.3ms InterpolantComputationTime, 265 NumberOfCodeBlocks, 260 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 470 ConstructedInterpolants, 95 QuantifiedInterpolants, 9579 SizeOfPredicates, 216 NumberOfNonLiveVariables, 2572 ConjunctsInSsa, 370 ConjunctsInUnsatCore, 60 InterpolantComputations, 30 PerfectInterpolantSequences, 88/512 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown