/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-chromosome-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:22:56,143 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:22:56,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:22:56,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:22:56,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-07 15:22:56,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-07 15:22:56,219 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-07 15:22:56,221 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-07 15:22:56,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-07 15:22:56,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-07 15:22:56,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-07 15:22:56,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-07 15:22:56,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-07 15:22:56,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-07 15:22:56,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-07 15:22:56,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-07 15:22:56,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-07 15:22:56,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 15:22:56,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 15:22:56,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 15:22:56,252 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 15:22:56,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:22:56,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:22:56,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:22:56,282 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:22:56,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:22:56,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:22:56,284 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:22:56,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:22:56,284 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:22:56,285 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:22:56,285 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:22:56,285 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:22:56,285 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:22:56,286 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:22:56,286 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:22:56,286 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:22:56,286 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:22:56,287 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:22:56,287 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:22:56,287 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:22:56,287 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:22:56,287 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:22:56,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:22:56,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:22:56,288 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:22:56,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:22:56,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:22:56,289 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:22:56,289 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:22:56,290 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:22:56,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:22:56,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:22:56,290 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:22:56,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:22:56,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:22:56,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:22:56,722 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:22:56,723 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:22:56,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2021-10-07 15:22:56,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26f0bf87/507d7ce828e048758c911f9a37677c47/FLAGae820c078 [2021-10-07 15:22:57,532 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:22:57,533 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/chl-chromosome-symm.wvr.c [2021-10-07 15:22:57,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26f0bf87/507d7ce828e048758c911f9a37677c47/FLAGae820c078 [2021-10-07 15:22:57,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b26f0bf87/507d7ce828e048758c911f9a37677c47 [2021-10-07 15:22:57,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:22:57,860 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:22:57,864 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:22:57,864 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:22:57,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:22:57,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:22:57" (1/1) ... [2021-10-07 15:22:57,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@390d643 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:57, skipping insertion in model container [2021-10-07 15:22:57,872 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:22:57" (1/1) ... [2021-10-07 15:22:57,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:22:57,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:22:58,194 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-chromosome-symm.wvr.c[2486,2499] [2021-10-07 15:22:58,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:22:58,246 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-07 15:22:58,261 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:22:58,292 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-chromosome-symm.wvr.c[2486,2499] [2021-10-07 15:22:58,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:22:58,314 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:22:58,358 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-chromosome-symm.wvr.c[2486,2499] [2021-10-07 15:22:58,366 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:22:58,385 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:22:58,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58 WrapperNode [2021-10-07 15:22:58,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:22:58,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:22:58,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:22:58,387 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:22:58,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:22:58,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:22:58,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:22:58,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:22:58,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:22:58,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:22:58,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:22:58,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:22:58,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (1/1) ... [2021-10-07 15:22:58,500 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:22:58,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:22:58,532 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 15:22:58,554 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 15:22:58,596 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:22:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:22:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:22:58,597 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:22:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:22:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:22:58,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-07 15:22:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:22:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:22:58,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:22:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:22:58,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:22:58,600 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 15:22:59,332 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:22:59,333 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-07 15:22:59,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:22:59 BoogieIcfgContainer [2021-10-07 15:22:59,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:22:59,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:22:59,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:22:59,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:22:59,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:22:57" (1/3) ... [2021-10-07 15:22:59,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@992fe22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:22:59, skipping insertion in model container [2021-10-07 15:22:59,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:22:58" (2/3) ... [2021-10-07 15:22:59,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@992fe22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:22:59, skipping insertion in model container [2021-10-07 15:22:59,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:22:59" (3/3) ... [2021-10-07 15:22:59,345 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-chromosome-symm.wvr.c [2021-10-07 15:22:59,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:22:59,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-07 15:22:59,352 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:22:59,405 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,405 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,406 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,406 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,406 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,406 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,407 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,407 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,407 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,407 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,407 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,408 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,408 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,408 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,408 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,409 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,409 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,409 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,409 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,409 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,410 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,410 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,411 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,411 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,412 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,412 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,413 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,413 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,414 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,415 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,416 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,416 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,416 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,416 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,416 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,417 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,417 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,418 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,419 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,419 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,419 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,420 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,420 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,420 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,420 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,420 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,420 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,421 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,421 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,421 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,421 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,422 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,422 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,422 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,422 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,422 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,423 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,423 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,424 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,424 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,424 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,424 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,425 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,425 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,425 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,425 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,426 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,426 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,426 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,427 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,428 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,428 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,428 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,429 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,429 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,429 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,430 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,433 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,433 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,434 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,434 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,439 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,440 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,440 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,441 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,441 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:22:59,447 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:22:59,506 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:22:59,514 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 15:22:59,515 INFO L340 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2021-10-07 15:22:59,534 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:22:59,547 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 200 transitions, 416 flow [2021-10-07 15:22:59,550 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 200 transitions, 416 flow [2021-10-07 15:22:59,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 188 places, 200 transitions, 416 flow [2021-10-07 15:22:59,658 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2021-10-07 15:22:59,659 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:22:59,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 198 events. 19/198 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 265 event pairs, 0 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 131. Up to 3 conditions per place. [2021-10-07 15:22:59,675 INFO L116 LiptonReduction]: Number of co-enabled transitions 2548 [2021-10-07 15:23:22,806 INFO L131 LiptonReduction]: Checked pairs total: 3106 [2021-10-07 15:23:22,806 INFO L133 LiptonReduction]: Total number of compositions: 221 [2021-10-07 15:23:22,819 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 45 transitions, 106 flow [2021-10-07 15:23:22,863 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 297 states, 195 states have (on average 4.015384615384615) internal successors, (783), 296 states have internal predecessors, (783), 0 states have call successors, (0), 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 15:23:22,868 INFO L276 IsEmpty]: Start isEmpty. Operand has 297 states, 195 states have (on average 4.015384615384615) internal successors, (783), 296 states have internal predecessors, (783), 0 states have call successors, (0), 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 15:23:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:23:22,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:22,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:23:22,882 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:22,889 INFO L82 PathProgramCache]: Analyzing trace with hash 24961, now seen corresponding path program 1 times [2021-10-07 15:23:22,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:22,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1831282599] [2021-10-07 15:23:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:22,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:22,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:22,908 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 15:23:22,915 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 15:23:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:23,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:23,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:23,384 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:23:23,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 57 [2021-10-07 15:23:23,491 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 15:23:23,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:23,572 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 15:23:23,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:23,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1831282599] [2021-10-07 15:23:23,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1831282599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:23,575 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:23,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:23:23,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235893346] [2021-10-07 15:23:23,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:23:23,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:23,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:23:23,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:23,609 INFO L87 Difference]: Start difference. First operand has 297 states, 195 states have (on average 4.015384615384615) internal successors, (783), 296 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 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 15:23:24,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:24,613 INFO L93 Difference]: Finished difference Result 882 states and 2340 transitions. [2021-10-07 15:23:24,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:24,616 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 15:23:24,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:24,644 INFO L225 Difference]: With dead ends: 882 [2021-10-07 15:23:24,644 INFO L226 Difference]: Without dead ends: 882 [2021-10-07 15:23:24,646 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:24,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-10-07 15:23:24,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 300. [2021-10-07 15:23:24,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 199 states have (on average 4.010050251256281) internal successors, (798), 299 states have internal predecessors, (798), 0 states have call successors, (0), 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 15:23:24,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 798 transitions. [2021-10-07 15:23:24,731 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 798 transitions. Word has length 2 [2021-10-07 15:23:24,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:24,732 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 798 transitions. [2021-10-07 15:23:24,732 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 15:23:24,732 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 798 transitions. [2021-10-07 15:23:24,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-07 15:23:24,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:24,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-07 15:23:24,744 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:23:24,944 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 15:23:24,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:24,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:24,947 INFO L82 PathProgramCache]: Analyzing trace with hash 24962, now seen corresponding path program 1 times [2021-10-07 15:23:24,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:24,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529939424] [2021-10-07 15:23:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:24,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:24,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:24,950 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 15:23:24,958 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 15:23:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:25,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:23:25,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:25,155 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:23:25,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 15:23:25,649 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 15:23:25,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:25,653 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 15:23:25,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:25,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529939424] [2021-10-07 15:23:25,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529939424] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:25,655 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:23:25,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082847285] [2021-10-07 15:23:25,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:23:25,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:23:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:23:25,660 INFO L87 Difference]: Start difference. First operand 300 states and 798 transitions. 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 15:23:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:25,887 INFO L93 Difference]: Finished difference Result 298 states and 792 transitions. [2021-10-07 15:23:25,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:23:25,888 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 15:23:25,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:25,892 INFO L225 Difference]: With dead ends: 298 [2021-10-07 15:23:25,892 INFO L226 Difference]: Without dead ends: 298 [2021-10-07 15:23:25,893 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:23:25,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-07 15:23:25,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-07 15:23:25,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 3.979899497487437) internal successors, (792), 297 states have internal predecessors, (792), 0 states have call successors, (0), 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 15:23:25,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 792 transitions. [2021-10-07 15:23:25,915 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 792 transitions. Word has length 2 [2021-10-07 15:23:25,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:25,915 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 792 transitions. [2021-10-07 15:23:25,915 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 15:23:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 792 transitions. [2021-10-07 15:23:25,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:23:25,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:25,916 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:23:25,933 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 15:23:26,130 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 15:23:26,131 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:26,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:26,133 INFO L82 PathProgramCache]: Analyzing trace with hash 780459, now seen corresponding path program 1 times [2021-10-07 15:23:26,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:26,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300800008] [2021-10-07 15:23:26,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:26,135 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:26,136 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 15:23:26,138 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 15:23:26,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:26,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:23:26,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:26,231 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 15:23:26,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:26,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:26,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300800008] [2021-10-07 15:23:26,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300800008] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:23:26,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:23:26,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:23:26,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112930430] [2021-10-07 15:23:26,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:23:26,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:26,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:23:26,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:26,254 INFO L87 Difference]: Start difference. First operand 298 states and 792 transitions. Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:26,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:26,380 INFO L93 Difference]: Finished difference Result 298 states and 784 transitions. [2021-10-07 15:23:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:23:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:23:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:26,388 INFO L225 Difference]: With dead ends: 298 [2021-10-07 15:23:26,388 INFO L226 Difference]: Without dead ends: 298 [2021-10-07 15:23:26,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:23:26,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-07 15:23:26,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-10-07 15:23:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 199 states have (on average 3.9396984924623117) internal successors, (784), 297 states have internal predecessors, (784), 0 states have call successors, (0), 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 15:23:26,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 784 transitions. [2021-10-07 15:23:26,421 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 784 transitions. Word has length 3 [2021-10-07 15:23:26,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:26,422 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 784 transitions. [2021-10-07 15:23:26,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:26,422 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 784 transitions. [2021-10-07 15:23:26,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-07 15:23:26,422 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:26,423 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-07 15:23:26,437 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 15:23:26,634 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 15:23:26,635 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash 24153377, now seen corresponding path program 1 times [2021-10-07 15:23:26,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:26,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780875673] [2021-10-07 15:23:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:26,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:26,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:26,642 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 15:23:26,644 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 15:23:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:26,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:23:26,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:26,891 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:23:26,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 57 [2021-10-07 15:23:26,998 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 15:23:26,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:27,401 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 15:23:27,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:27,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780875673] [2021-10-07 15:23:27,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780875673] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:27,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:27,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-07 15:23:27,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56890364] [2021-10-07 15:23:27,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:27,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:27,404 INFO L87 Difference]: Start difference. First operand 298 states and 784 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 15:23:30,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:30,494 INFO L93 Difference]: Finished difference Result 1171 states and 3115 transitions. [2021-10-07 15:23:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:23:30,501 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 15:23:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:30,511 INFO L225 Difference]: With dead ends: 1171 [2021-10-07 15:23:30,512 INFO L226 Difference]: Without dead ends: 1171 [2021-10-07 15:23:30,512 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 543.9ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:23:30,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-10-07 15:23:30,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 304. [2021-10-07 15:23:30,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 3.9121951219512194) internal successors, (802), 303 states have internal predecessors, (802), 0 states have call successors, (0), 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 15:23:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 802 transitions. [2021-10-07 15:23:30,534 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 802 transitions. Word has length 4 [2021-10-07 15:23:30,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:30,535 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 802 transitions. [2021-10-07 15:23:30,535 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 15:23:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 802 transitions. [2021-10-07 15:23:30,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:23:30,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:30,536 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2021-10-07 15:23:30,552 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 15:23:30,747 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 15:23:30,748 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:30,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:30,749 INFO L82 PathProgramCache]: Analyzing trace with hash -1994847445, now seen corresponding path program 1 times [2021-10-07 15:23:30,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:30,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50100507] [2021-10-07 15:23:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:23:30,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:30,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:30,753 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 15:23:30,759 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 15:23:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:23:30,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:30,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:30,889 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:30,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:30,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:23:30,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:30,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50100507] [2021-10-07 15:23:30,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50100507] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:30,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:30,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-07 15:23:30,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405091507] [2021-10-07 15:23:30,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:23:30,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:23:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:23:31,001 INFO L87 Difference]: Start difference. First operand 304 states and 802 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:31,262 INFO L93 Difference]: Finished difference Result 304 states and 790 transitions. [2021-10-07 15:23:31,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:23:31,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:23:31,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:31,266 INFO L225 Difference]: With dead ends: 304 [2021-10-07 15:23:31,267 INFO L226 Difference]: Without dead ends: 304 [2021-10-07 15:23:31,268 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:23:31,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-07 15:23:31,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2021-10-07 15:23:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 3.8536585365853657) internal successors, (790), 303 states have internal predecessors, (790), 0 states have call successors, (0), 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 15:23:31,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 790 transitions. [2021-10-07 15:23:31,281 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 790 transitions. Word has length 7 [2021-10-07 15:23:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:31,281 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 790 transitions. [2021-10-07 15:23:31,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:23:31,282 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 790 transitions. [2021-10-07 15:23:31,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-07 15:23:31,283 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:31,283 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1] [2021-10-07 15:23:31,298 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 15:23:31,498 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 15:23:31,499 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:31,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:31,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1996104802, now seen corresponding path program 2 times [2021-10-07 15:23:31,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:31,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1586579834] [2021-10-07 15:23:31,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:31,502 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:31,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:31,503 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 15:23:31,518 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 15:23:31,576 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:23:31,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:31,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:23:31,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:31,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:31,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:31,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-07 15:23:31,762 INFO L354 Elim1Store]: treesize reduction 141, result has 26.9 percent of original size [2021-10-07 15:23:31,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 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 15:23:32,014 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:32,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:23:33,201 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:23:33,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:23:33,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1586579834] [2021-10-07 15:23:33,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1586579834] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:23:33,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:23:33,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2021-10-07 15:23:33,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732645049] [2021-10-07 15:23:33,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:23:33,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:23:33,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:23:33,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:33,204 INFO L87 Difference]: Start difference. First operand 304 states and 790 transitions. Second operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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 15:23:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:23:33,724 INFO L93 Difference]: Finished difference Result 302 states and 786 transitions. [2021-10-07 15:23:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:23:33,725 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-07 15:23:33,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:23:33,729 INFO L225 Difference]: With dead ends: 302 [2021-10-07 15:23:33,729 INFO L226 Difference]: Without dead ends: 302 [2021-10-07 15:23:33,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 989.5ms TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:23:33,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-10-07 15:23:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-10-07 15:23:33,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 205 states have (on average 3.8341463414634145) internal successors, (786), 301 states have internal predecessors, (786), 0 states have call successors, (0), 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 15:23:33,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 786 transitions. [2021-10-07 15:23:33,742 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 786 transitions. Word has length 7 [2021-10-07 15:23:33,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:23:33,742 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 786 transitions. [2021-10-07 15:23:33,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 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 15:23:33,743 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 786 transitions. [2021-10-07 15:23:33,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:23:33,744 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:23:33,744 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1] [2021-10-07 15:23:33,762 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 15:23:33,960 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 15:23:33,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:23:33,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:23:33,962 INFO L82 PathProgramCache]: Analyzing trace with hash -140081063, now seen corresponding path program 2 times [2021-10-07 15:23:33,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:23:33,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924977510] [2021-10-07 15:23:33,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:23:33,963 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:23:33,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:23:33,965 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 15:23:33,968 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 15:23:34,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:23:34,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:23:34,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:23:34,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:23:34,200 INFO L354 Elim1Store]: treesize reduction 235, result has 17.8 percent of original size [2021-10-07 15:23:34,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 88 treesize of output 120 [2021-10-07 15:23:40,833 INFO L354 Elim1Store]: treesize reduction 138, result has 41.3 percent of original size [2021-10-07 15:23:40,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 84 treesize of output 167 [2021-10-07 15:24:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:24:34,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:24:34,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:34,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924977510] [2021-10-07 15:24:34,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924977510] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:24:34,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:24:34,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 1] imperfect sequences [] total 3 [2021-10-07 15:24:34,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581299377] [2021-10-07 15:24:34,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:24:34,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:24:34,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-10-07 15:24:34,711 INFO L87 Difference]: Start difference. First operand 302 states and 786 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 15:24:35,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:35,360 INFO L93 Difference]: Finished difference Result 245 states and 610 transitions. [2021-10-07 15:24:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:24:35,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 13 [2021-10-07 15:24:35,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:35,368 INFO L225 Difference]: With dead ends: 245 [2021-10-07 15:24:35,368 INFO L226 Difference]: Without dead ends: 245 [2021-10-07 15:24:35,369 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2872.9ms TimeCoverageRelationStatistics Valid=10, Invalid=9, Unknown=1, NotChecked=0, Total=20 [2021-10-07 15:24:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-07 15:24:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2021-10-07 15:24:35,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 174 states have (on average 3.5057471264367814) internal successors, (610), 244 states have internal predecessors, (610), 0 states have call successors, (0), 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 15:24:35,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 610 transitions. [2021-10-07 15:24:35,378 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 610 transitions. Word has length 13 [2021-10-07 15:24:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:35,379 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 610 transitions. [2021-10-07 15:24:35,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 15:24:35,379 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 610 transitions. [2021-10-07 15:24:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:24:35,380 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:35,380 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1] [2021-10-07 15:24:35,392 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 15:24:35,591 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 15:24:35,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:35,593 INFO L82 PathProgramCache]: Analyzing trace with hash -140081061, now seen corresponding path program 1 times [2021-10-07 15:24:35,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:35,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [260194975] [2021-10-07 15:24:35,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:35,595 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:35,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:35,596 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 15:24:35,597 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 15:24:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:35,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:24:35,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:35,985 INFO L354 Elim1Store]: treesize reduction 151, result has 21.8 percent of original size [2021-10-07 15:24:35,986 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 44 treesize of output 72 [2021-10-07 15:24:35,993 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 175 treesize of output 171 [2021-10-07 15:24:36,491 INFO L354 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2021-10-07 15:24:36,492 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 28 treesize of output 37 [2021-10-07 15:24:36,782 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:24:36,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:37,247 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:24:37,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:37,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [260194975] [2021-10-07 15:24:37,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [260194975] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:24:37,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:24:37,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:24:37,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17021189] [2021-10-07 15:24:37,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:24:37,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:37,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:24:37,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:37,250 INFO L87 Difference]: Start difference. First operand 245 states and 610 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 15:24:39,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:39,629 INFO L93 Difference]: Finished difference Result 188 states and 434 transitions. [2021-10-07 15:24:39,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:24:39,631 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 13 [2021-10-07 15:24:39,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:39,633 INFO L225 Difference]: With dead ends: 188 [2021-10-07 15:24:39,633 INFO L226 Difference]: Without dead ends: 188 [2021-10-07 15:24:39,633 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 155.2ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:24:39,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-07 15:24:39,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2021-10-07 15:24:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 143 states have (on average 3.034965034965035) internal successors, (434), 187 states have internal predecessors, (434), 0 states have call successors, (0), 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 15:24:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 434 transitions. [2021-10-07 15:24:39,641 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 434 transitions. Word has length 13 [2021-10-07 15:24:39,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:39,641 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 434 transitions. [2021-10-07 15:24:39,644 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 15:24:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 434 transitions. [2021-10-07 15:24:39,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:24:39,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:39,645 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2021-10-07 15:24:39,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-07 15:24:39,849 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 15:24:39,850 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:39,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:39,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1473897178, now seen corresponding path program 1 times [2021-10-07 15:24:39,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:39,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1635435599] [2021-10-07 15:24:39,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:39,853 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:39,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:39,853 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 15:24:39,854 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 15:24:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:40,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:24:40,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:40,347 INFO L354 Elim1Store]: treesize reduction 155, result has 19.7 percent of original size [2021-10-07 15:24:40,348 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 43 treesize of output 67 [2021-10-07 15:24:40,353 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 306 treesize of output 290 [2021-10-07 15:24:41,025 INFO L354 Elim1Store]: treesize reduction 54, result has 34.1 percent of original size [2021-10-07 15:24:41,026 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 32 treesize of output 52 [2021-10-07 15:24:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:24:47,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:24:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:24:47,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:24:47,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1635435599] [2021-10-07 15:24:47,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1635435599] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:24:47,809 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:24:47,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:24:47,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667435351] [2021-10-07 15:24:47,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:24:47,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:24:47,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:24:47,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:24:47,811 INFO L87 Difference]: Start difference. First operand 188 states and 434 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:48,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:24:48,566 INFO L93 Difference]: Finished difference Result 173 states and 403 transitions. [2021-10-07 15:24:48,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:24:48,567 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 15:24:48,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:24:48,569 INFO L225 Difference]: With dead ends: 173 [2021-10-07 15:24:48,569 INFO L226 Difference]: Without dead ends: 173 [2021-10-07 15:24:48,569 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 592.3ms TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:24:48,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-10-07 15:24:48,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-10-07 15:24:48,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 138 states have (on average 2.920289855072464) internal successors, (403), 172 states have internal predecessors, (403), 0 states have call successors, (0), 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 15:24:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 403 transitions. [2021-10-07 15:24:48,577 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 403 transitions. Word has length 15 [2021-10-07 15:24:48,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:24:48,577 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 403 transitions. [2021-10-07 15:24:48,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:24:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 403 transitions. [2021-10-07 15:24:48,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:24:48,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:24:48,578 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2021-10-07 15:24:48,594 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 15:24:48,792 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 15:24:48,793 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:24:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:24:48,794 INFO L82 PathProgramCache]: Analyzing trace with hash -1473897177, now seen corresponding path program 1 times [2021-10-07 15:24:48,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:24:48,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669351632] [2021-10-07 15:24:48,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:24:48,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:24:48,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:24:48,798 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 15:24:48,801 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 15:24:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:24:49,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:24:49,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:24:49,214 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:24:49,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 301 treesize of output 330 [2021-10-07 15:24:55,977 INFO L354 Elim1Store]: treesize reduction 127, result has 46.0 percent of original size [2021-10-07 15:24:55,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 87 treesize of output 181 [2021-10-07 15:25:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:25:18,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:18,734 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:25:18,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:18,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669351632] [2021-10-07 15:25:18,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669351632] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:18,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:18,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:25:18,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420351858] [2021-10-07 15:25:18,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:25:18,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:18,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:25:18,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:25:18,737 INFO L87 Difference]: Start difference. First operand 173 states and 403 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 15:25:18,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:18,910 INFO L93 Difference]: Finished difference Result 158 states and 372 transitions. [2021-10-07 15:25:18,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:25:18,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 15 [2021-10-07 15:25:18,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:18,918 INFO L225 Difference]: With dead ends: 158 [2021-10-07 15:25:18,918 INFO L226 Difference]: Without dead ends: 158 [2021-10-07 15:25:18,918 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:25:18,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-07 15:25:18,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-10-07 15:25:18,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 133 states have (on average 2.7969924812030076) internal successors, (372), 157 states have internal predecessors, (372), 0 states have call successors, (0), 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 15:25:18,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 372 transitions. [2021-10-07 15:25:18,924 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 372 transitions. Word has length 15 [2021-10-07 15:25:18,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:18,925 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 372 transitions. [2021-10-07 15:25:18,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 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 15:25:18,925 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 372 transitions. [2021-10-07 15:25:18,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:25:18,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:18,926 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:18,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-10-07 15:25:19,143 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 15:25:19,144 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:25:19,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:19,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1553829417, now seen corresponding path program 1 times [2021-10-07 15:25:19,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:19,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [98609156] [2021-10-07 15:25:19,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:19,145 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:19,146 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 15:25:19,148 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 15:25:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:19,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:25:19,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:19,604 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:25:19,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 21 treesize of output 59 [2021-10-07 15:25:19,933 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-10-07 15:25:19,933 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 15:25:20,090 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:25:20,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:25:24,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:25:24,214 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:25:24,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [98609156] [2021-10-07 15:25:24,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [98609156] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:25:24,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:25:24,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 4 [2021-10-07 15:25:24,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151419852] [2021-10-07 15:25:24,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:25:24,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:25:24,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:25:24,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=17, Unknown=2, NotChecked=0, Total=30 [2021-10-07 15:25:24,218 INFO L87 Difference]: Start difference. First operand 158 states and 372 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 15:25:24,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:25:24,403 INFO L93 Difference]: Finished difference Result 126 states and 292 transitions. [2021-10-07 15:25:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:25:24,404 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 16 [2021-10-07 15:25:24,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:25:24,405 INFO L225 Difference]: With dead ends: 126 [2021-10-07 15:25:24,405 INFO L226 Difference]: Without dead ends: 126 [2021-10-07 15:25:24,406 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 4081.9ms TimeCoverageRelationStatistics Valid=17, Invalid=23, Unknown=2, NotChecked=0, Total=42 [2021-10-07 15:25:24,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-10-07 15:25:24,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-10-07 15:25:24,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 110 states have (on average 2.6545454545454548) internal successors, (292), 125 states have internal predecessors, (292), 0 states have call successors, (0), 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 15:25:24,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 292 transitions. [2021-10-07 15:25:24,410 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 292 transitions. Word has length 16 [2021-10-07 15:25:24,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:25:24,411 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 292 transitions. [2021-10-07 15:25:24,412 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 15:25:24,412 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 292 transitions. [2021-10-07 15:25:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:25:24,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:25:24,413 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-07 15:25:24,427 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 15:25:24,626 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 15:25:24,627 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:25:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:25:24,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1553829418, now seen corresponding path program 1 times [2021-10-07 15:25:24,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:25:24,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [942469061] [2021-10-07 15:25:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:25:24,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:25:24,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:25:24,630 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 15:25:24,631 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 15:25:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:25:24,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:25:24,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:25:25,091 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:25:25,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 78 [2021-10-07 15:25:25,251 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:25:25,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 115 [2021-10-07 15:26:40,988 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 15:26:40,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 384 treesize of output 336 [2021-10-07 15:26:41,131 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-07 15:26:41,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 390 treesize of output 449 [2021-10-07 15:26:56,772 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:26:56,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:26:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:26:57,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:26:57,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [942469061] [2021-10-07 15:26:57,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [942469061] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:26:57,282 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:26:57,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:26:57,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714333882] [2021-10-07 15:26:57,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:26:57,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:26:57,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:26:57,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:26:57,284 INFO L87 Difference]: Start difference. First operand 126 states and 292 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 15:27:06,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:06,369 INFO L93 Difference]: Finished difference Result 252 states and 624 transitions. [2021-10-07 15:27:06,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:27:06,370 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 16 [2021-10-07 15:27:06,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:06,373 INFO L225 Difference]: With dead ends: 252 [2021-10-07 15:27:06,373 INFO L226 Difference]: Without dead ends: 252 [2021-10-07 15:27:06,374 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6019.1ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:27:06,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-07 15:27:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 168. [2021-10-07 15:27:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 152 states have (on average 3.236842105263158) internal successors, (492), 167 states have internal predecessors, (492), 0 states have call successors, (0), 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 15:27:06,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 492 transitions. [2021-10-07 15:27:06,382 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 492 transitions. Word has length 16 [2021-10-07 15:27:06,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:06,382 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 492 transitions. [2021-10-07 15:27:06,382 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 15:27:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 492 transitions. [2021-10-07 15:27:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:27:06,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:06,383 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:06,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:27:06,597 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 15:27:06,598 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:27:06,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:06,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1553829477, now seen corresponding path program 1 times [2021-10-07 15:27:06,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:06,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [765595462] [2021-10-07 15:27:06,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:27:06,600 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:06,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:06,601 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 15:27:06,602 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 15:27:06,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:27:06,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:27:06,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:07,008 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 15:27:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:27:07,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:27:07,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:07,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [765595462] [2021-10-07 15:27:07,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [765595462] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:27:07,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:27:07,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:27:07,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333689887] [2021-10-07 15:27:07,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:27:07,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:27:07,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:27:07,355 INFO L87 Difference]: Start difference. First operand 168 states and 492 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 15:27:07,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:07,791 INFO L93 Difference]: Finished difference Result 266 states and 644 transitions. [2021-10-07 15:27:07,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:27:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 16 [2021-10-07 15:27:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:07,795 INFO L225 Difference]: With dead ends: 266 [2021-10-07 15:27:07,795 INFO L226 Difference]: Without dead ends: 266 [2021-10-07 15:27:07,796 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 219.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:27:07,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-07 15:27:07,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 168. [2021-10-07 15:27:07,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 152 states have (on average 3.0526315789473686) internal successors, (464), 167 states have internal predecessors, (464), 0 states have call successors, (0), 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 15:27:07,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 464 transitions. [2021-10-07 15:27:07,803 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 464 transitions. Word has length 16 [2021-10-07 15:27:07,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:07,804 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 464 transitions. [2021-10-07 15:27:07,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 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 15:27:07,804 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 464 transitions. [2021-10-07 15:27:07,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:27:07,805 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:07,805 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:07,824 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 15:27:08,019 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 15:27:08,020 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:27:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1553829478, now seen corresponding path program 1 times [2021-10-07 15:27:08,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:08,021 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600273108] [2021-10-07 15:27:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:27:08,022 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:08,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:08,024 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 15:27:08,027 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 15:27:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:27:08,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:27:08,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:08,433 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 15:27:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:27:08,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:27:08,515 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:27:08,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:27:08,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600273108] [2021-10-07 15:27:08,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600273108] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:27:08,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:27:08,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-07 15:27:08,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302178573] [2021-10-07 15:27:08,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:27:08,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:27:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:27:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:27:08,519 INFO L87 Difference]: Start difference. First operand 168 states and 464 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 15:27:08,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:27:08,678 INFO L93 Difference]: Finished difference Result 134 states and 345 transitions. [2021-10-07 15:27:08,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-07 15:27:08,679 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 16 [2021-10-07 15:27:08,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:27:08,680 INFO L225 Difference]: With dead ends: 134 [2021-10-07 15:27:08,680 INFO L226 Difference]: Without dead ends: 134 [2021-10-07 15:27:08,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:27:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-07 15:27:08,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2021-10-07 15:27:08,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 125 states have (on average 2.76) internal successors, (345), 133 states have internal predecessors, (345), 0 states have call successors, (0), 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 15:27:08,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 345 transitions. [2021-10-07 15:27:08,688 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 345 transitions. Word has length 16 [2021-10-07 15:27:08,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:27:08,689 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 345 transitions. [2021-10-07 15:27:08,689 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 15:27:08,689 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 345 transitions. [2021-10-07 15:27:08,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:27:08,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:27:08,690 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:27:08,701 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 15:27:08,897 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 15:27:08,898 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:27:08,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:27:08,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1419570212, now seen corresponding path program 1 times [2021-10-07 15:27:08,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:27:08,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405345162] [2021-10-07 15:27:08,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:27:08,901 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:27:08,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:27:08,902 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 15:27:08,918 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 15:27:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:27:09,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-07 15:27:09,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:27:09,821 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:27:09,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 77 [2021-10-07 15:27:09,965 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:27:09,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 115 [2021-10-07 15:28:28,599 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 15:28:28,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 389 treesize of output 341 [2021-10-07 15:28:28,754 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-07 15:28:28,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 395 treesize of output 454 [2021-10-07 15:28:44,595 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:28:44,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:28:45,171 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:45,171 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405345162] [2021-10-07 15:28:45,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405345162] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:28:45,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:28:45,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:28:45,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568051664] [2021-10-07 15:28:45,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:28:45,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:45,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:28:45,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:28:45,174 INFO L87 Difference]: Start difference. First operand 134 states and 345 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 15:28:50,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:50,487 INFO L93 Difference]: Finished difference Result 258 states and 691 transitions. [2021-10-07 15:28:50,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 15:28:50,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 18 [2021-10-07 15:28:50,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:50,491 INFO L225 Difference]: With dead ends: 258 [2021-10-07 15:28:50,492 INFO L226 Difference]: Without dead ends: 258 [2021-10-07 15:28:50,495 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4678.7ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:28:50,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-07 15:28:50,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 174. [2021-10-07 15:28:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 165 states have (on average 3.2666666666666666) internal successors, (539), 173 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 15:28:50,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 539 transitions. [2021-10-07 15:28:50,505 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 539 transitions. Word has length 18 [2021-10-07 15:28:50,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:50,506 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 539 transitions. [2021-10-07 15:28:50,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 15:28:50,506 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 539 transitions. [2021-10-07 15:28:50,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 15:28:50,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:50,508 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:50,526 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 15:28:50,721 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 15:28:50,722 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:28:50,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:50,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1419570275, now seen corresponding path program 1 times [2021-10-07 15:28:50,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:50,724 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93667456] [2021-10-07 15:28:50,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:28:50,724 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:50,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:50,726 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 15:28:50,727 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 15:28:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:28:51,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:28:51,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:51,261 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 15:28:51,361 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:28:51,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:28:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:28:51,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:28:51,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93667456] [2021-10-07 15:28:51,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93667456] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:28:51,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:28:51,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-07 15:28:51,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149496189] [2021-10-07 15:28:51,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:28:51,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:28:51,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:28:51,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:28:51,636 INFO L87 Difference]: Start difference. First operand 174 states and 539 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 15:28:52,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:28:52,075 INFO L93 Difference]: Finished difference Result 218 states and 577 transitions. [2021-10-07 15:28:52,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:28:52,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 18 [2021-10-07 15:28:52,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:28:52,079 INFO L225 Difference]: With dead ends: 218 [2021-10-07 15:28:52,079 INFO L226 Difference]: Without dead ends: 218 [2021-10-07 15:28:52,079 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 230.8ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:28:52,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-07 15:28:52,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 174. [2021-10-07 15:28:52,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 165 states have (on average 3.0242424242424244) internal successors, (499), 173 states have internal predecessors, (499), 0 states have call successors, (0), 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 15:28:52,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 499 transitions. [2021-10-07 15:28:52,086 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 499 transitions. Word has length 18 [2021-10-07 15:28:52,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:28:52,086 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 499 transitions. [2021-10-07 15:28:52,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 8 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 15:28:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 499 transitions. [2021-10-07 15:28:52,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:28:52,088 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:28:52,088 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:28:52,106 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 15:28:52,303 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 15:28:52,303 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:28:52,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:28:52,304 INFO L82 PathProgramCache]: Analyzing trace with hash -1642690462, now seen corresponding path program 1 times [2021-10-07 15:28:52,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:28:52,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306453872] [2021-10-07 15:28:52,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:28:52,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:28:52,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:28:52,307 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 15:28:52,344 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 15:28:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:28:52,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:28:52,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:28:53,136 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:28:53,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 78 [2021-10-07 15:28:53,307 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:28:53,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 115 [2021-10-07 15:30:14,309 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 15:30:14,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 386 treesize of output 338 [2021-10-07 15:30:14,460 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-07 15:30:14,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 392 treesize of output 451 [2021-10-07 15:30:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:30:34,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:30:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:30:35,059 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:30:35,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306453872] [2021-10-07 15:30:35,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306453872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:30:35,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:30:35,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:30:35,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107635035] [2021-10-07 15:30:35,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:30:35,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:30:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:30:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:30:35,062 INFO L87 Difference]: Start difference. First operand 174 states and 499 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15:31:12,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:12,457 INFO L93 Difference]: Finished difference Result 462 states and 1260 transitions. [2021-10-07 15:31:12,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:31:12,458 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 20 [2021-10-07 15:31:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:12,462 INFO L225 Difference]: With dead ends: 462 [2021-10-07 15:31:12,463 INFO L226 Difference]: Without dead ends: 462 [2021-10-07 15:31:12,463 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 19331.5ms TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:31:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-07 15:31:12,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 270. [2021-10-07 15:31:12,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 3.4521072796934864) internal successors, (901), 269 states have internal predecessors, (901), 0 states have call successors, (0), 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 15:31:12,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 901 transitions. [2021-10-07 15:31:12,474 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 901 transitions. Word has length 20 [2021-10-07 15:31:12,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:12,474 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 901 transitions. [2021-10-07 15:31:12,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15:31:12,474 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 901 transitions. [2021-10-07 15:31:12,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:31:12,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:12,475 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:12,492 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 15:31:12,688 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 15:31:12,689 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:31:12,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:12,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1642690403, now seen corresponding path program 1 times [2021-10-07 15:31:12,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:12,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150363741] [2021-10-07 15:31:12,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:31:12,691 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:12,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:12,694 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 15:31:12,695 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 15:31:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:31:13,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:31:13,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:13,382 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 15:31:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:31:13,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:31:14,197 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:31:14,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:31:14,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150363741] [2021-10-07 15:31:14,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150363741] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:31:14,198 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:31:14,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:31:14,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660468485] [2021-10-07 15:31:14,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:31:14,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:31:14,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:31:14,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:31:14,200 INFO L87 Difference]: Start difference. First operand 270 states and 901 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 15:31:15,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:31:15,355 INFO L93 Difference]: Finished difference Result 446 states and 1217 transitions. [2021-10-07 15:31:15,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:31:15,357 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 20 [2021-10-07 15:31:15,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:31:15,359 INFO L225 Difference]: With dead ends: 446 [2021-10-07 15:31:15,360 INFO L226 Difference]: Without dead ends: 446 [2021-10-07 15:31:15,360 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 757.9ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:31:15,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-07 15:31:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 270. [2021-10-07 15:31:15,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 261 states have (on average 3.268199233716475) internal successors, (853), 269 states have internal predecessors, (853), 0 states have call successors, (0), 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 15:31:15,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 853 transitions. [2021-10-07 15:31:15,371 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 853 transitions. Word has length 20 [2021-10-07 15:31:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:31:15,371 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 853 transitions. [2021-10-07 15:31:15,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 15:31:15,372 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 853 transitions. [2021-10-07 15:31:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:31:15,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:31:15,373 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:31:15,390 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-07 15:31:15,586 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 15:31:15,587 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:31:15,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:31:15,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1592720060, now seen corresponding path program 1 times [2021-10-07 15:31:15,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:31:15,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899316479] [2021-10-07 15:31:15,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:31:15,591 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:31:15,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:31:15,592 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 15:31:15,599 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 15:31:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:31:16,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:31:16,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:31:16,742 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:31:16,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 77 [2021-10-07 15:31:16,878 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:31:16,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 77 treesize of output 115 [2021-10-07 15:32:37,498 INFO L354 Elim1Store]: treesize reduction 156, result has 16.1 percent of original size [2021-10-07 15:32:37,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 388 treesize of output 340 [2021-10-07 15:32:37,654 INFO L354 Elim1Store]: treesize reduction 49, result has 59.5 percent of original size [2021-10-07 15:32:37,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 394 treesize of output 453 [2021-10-07 15:33:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:33:06,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:07,669 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:33:07,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:07,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899316479] [2021-10-07 15:33:07,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899316479] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:07,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:07,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-07 15:33:07,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720513022] [2021-10-07 15:33:07,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:07,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:07,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:07,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:07,673 INFO L87 Difference]: Start difference. First operand 270 states and 853 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15:33:23,596 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse9 (bvmul c_thread2Thread1of1ForFork0_~i~1 (_ bv4 32)))) (let ((.cse0 (bvadd .cse9 (_ bv4 32) c_~a1~0.offset)) (.cse1 (select |c_#length| c_~a1~0.base))) (and (forall ((v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_128 (_ BitVec 32))) (or (and (bvule (bvadd (_ bv8 32) c_ULTIMATE.start_create_fresh_int_array_~arr~0.offset) (bvadd c_ULTIMATE.start_create_fresh_int_array_~arr~0.offset (_ bv12 32))) (forall ((v_ULTIMATE.start_create_fresh_int_array_~size_135 (_ BitVec 32))) (bvule (bvadd c_ULTIMATE.start_create_fresh_int_array_~arr~0.offset (_ bv12 32)) (select (store |c_#length| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_128 (bvmul v_ULTIMATE.start_create_fresh_int_array_~size_135 (_ bv4 32))) c_ULTIMATE.start_create_fresh_int_array_~arr~0.base)))) (not (= (_ bv0 1) (bvneg (select |c_#valid| v_ULTIMATE.start_create_fresh_int_array_~arr~0.base_128)))))) (bvule .cse0 .cse1) (exists ((|#t~string0.base| (_ BitVec 32)) (ULTIMATE.start_create_fresh_int_array_~size (_ BitVec 32)) (|#t~string1.base| (_ BitVec 32)) (ULTIMATE.start_create_fresh_int_array_~arr~0.base (_ BitVec 32))) (and (= (bvmul (_ bv4 32) ULTIMATE.start_create_fresh_int_array_~size) (select |c_#length| ULTIMATE.start_create_fresh_int_array_~arr~0.base)) (not (= ULTIMATE.start_create_fresh_int_array_~arr~0.base |#t~string1.base|)) (not (= c_~a1~0.base ULTIMATE.start_create_fresh_int_array_~arr~0.base)) (let ((.cse8 (select |c_#length| |#t~string1.base|))) (let ((.cse2 (= (_ bv22 32) .cse8)) (.cse7 (= (_ bv4 32) .cse8)) (.cse3 (= c_~a1~0.base |#t~string1.base|))) (let ((.cse6 (select |c_#length| |#t~string0.base|)) (.cse5 (or .cse2 .cse7 .cse3)) (.cse4 (= c_~a1~0.base |#t~string0.base|))) (or (and (or .cse2 .cse3) .cse4) (and .cse5 (= (_ bv2 32) .cse6)) (and .cse2 (= |#t~string1.base| |#t~string0.base|)) (and (= (_ bv4 32) .cse6) .cse5) (and .cse7 .cse4))))) (not (= ULTIMATE.start_create_fresh_int_array_~arr~0.base |#t~string0.base|)))) (bvule (bvadd .cse9 c_~a1~0.offset) .cse0) (= c_~a1~0.offset (_ bv0 32)) (= .cse1 (_ bv20 32))))) is different from false [2021-10-07 15:33:30,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:30,675 INFO L93 Difference]: Finished difference Result 566 states and 1752 transitions. [2021-10-07 15:33:30,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:33:30,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 20 [2021-10-07 15:33:30,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:30,681 INFO L225 Difference]: With dead ends: 566 [2021-10-07 15:33:30,682 INFO L226 Difference]: Without dead ends: 566 [2021-10-07 15:33:30,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 16322.8ms TimeCoverageRelationStatistics Valid=86, Invalid=189, Unknown=1, NotChecked=30, Total=306 [2021-10-07 15:33:30,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-07 15:33:30,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 366. [2021-10-07 15:33:30,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 357 states have (on average 3.7591036414565826) internal successors, (1342), 365 states have internal predecessors, (1342), 0 states have call successors, (0), 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 15:33:30,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 1342 transitions. [2021-10-07 15:33:30,697 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 1342 transitions. Word has length 20 [2021-10-07 15:33:30,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:30,697 INFO L470 AbstractCegarLoop]: Abstraction has 366 states and 1342 transitions. [2021-10-07 15:33:30,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15:33:30,698 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 1342 transitions. [2021-10-07 15:33:30,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 15:33:30,699 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:30,699 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:30,718 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 15:33:30,912 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 15:33:30,913 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:33:30,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:30,914 INFO L82 PathProgramCache]: Analyzing trace with hash 1592719997, now seen corresponding path program 1 times [2021-10-07 15:33:30,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:30,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26370881] [2021-10-07 15:33:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:33:30,915 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:30,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:30,916 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 15:33:30,923 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 15:33:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:33:31,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:33:31,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:31,727 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 15:33:31,887 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:33:31,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:33:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:33:32,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:33:32,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26370881] [2021-10-07 15:33:32,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26370881] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:33:32,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:33:32,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:33:32,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575627012] [2021-10-07 15:33:32,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:33:32,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:33:32,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:33:32,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:33:32,555 INFO L87 Difference]: Start difference. First operand 366 states and 1342 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 15:33:33,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:33:33,688 INFO L93 Difference]: Finished difference Result 567 states and 1749 transitions. [2021-10-07 15:33:33,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:33:33,689 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 20 [2021-10-07 15:33:33,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:33:33,692 INFO L225 Difference]: With dead ends: 567 [2021-10-07 15:33:33,693 INFO L226 Difference]: Without dead ends: 567 [2021-10-07 15:33:33,693 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 744.0ms TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:33:33,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-07 15:33:33,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 397. [2021-10-07 15:33:33,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 388 states have (on average 3.618556701030928) internal successors, (1404), 396 states have internal predecessors, (1404), 0 states have call successors, (0), 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 15:33:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 1404 transitions. [2021-10-07 15:33:33,705 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 1404 transitions. Word has length 20 [2021-10-07 15:33:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:33:33,705 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 1404 transitions. [2021-10-07 15:33:33,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 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 15:33:33,705 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 1404 transitions. [2021-10-07 15:33:33,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:33:33,706 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:33:33,707 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:33:33,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 15:33:33,921 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 15:33:33,922 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:33:33,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:33:33,923 INFO L82 PathProgramCache]: Analyzing trace with hash -2072472237, now seen corresponding path program 2 times [2021-10-07 15:33:33,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:33:33,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615695223] [2021-10-07 15:33:33,924 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:33:33,924 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:33:33,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:33:33,926 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 15:33:33,928 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 15:33:34,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:33:34,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:33:34,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 15:33:34,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:33:34,811 INFO L354 Elim1Store]: treesize reduction 133, result has 28.1 percent of original size [2021-10-07 15:33:34,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 78 [2021-10-07 15:33:34,985 INFO L354 Elim1Store]: treesize reduction 232, result has 18.9 percent of original size [2021-10-07 15:33:34,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 78 treesize of output 115 [2021-10-07 15:34:54,403 INFO L354 Elim1Store]: treesize reduction 146, result has 17.0 percent of original size [2021-10-07 15:34:54,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 385 treesize of output 337 [2021-10-07 15:34:54,513 INFO L354 Elim1Store]: treesize reduction 61, result has 49.6 percent of original size [2021-10-07 15:34:54,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 391 treesize of output 438 [2021-10-07 15:35:06,843 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-07 15:35:06,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:13,718 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-10-07 15:35:13,719 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:13,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615695223] [2021-10-07 15:35:13,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615695223] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:35:13,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:35:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-07 15:35:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210857843] [2021-10-07 15:35:13,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:35:13,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:35:13,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:35:13,721 INFO L87 Difference]: Start difference. First operand 397 states and 1404 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 15:35:14,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:14,268 INFO L93 Difference]: Finished difference Result 343 states and 1208 transitions. [2021-10-07 15:35:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:35:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 23 [2021-10-07 15:35:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:14,274 INFO L225 Difference]: With dead ends: 343 [2021-10-07 15:35:14,274 INFO L226 Difference]: Without dead ends: 343 [2021-10-07 15:35:14,274 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2532.7ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:35:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-10-07 15:35:14,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 314. [2021-10-07 15:35:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 310 states have (on average 3.509677419354839) internal successors, (1088), 313 states have internal predecessors, (1088), 0 states have call successors, (0), 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 15:35:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 1088 transitions. [2021-10-07 15:35:14,285 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 1088 transitions. Word has length 23 [2021-10-07 15:35:14,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:14,286 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 1088 transitions. [2021-10-07 15:35:14,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 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 15:35:14,286 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 1088 transitions. [2021-10-07 15:35:14,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 15:35:14,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:14,287 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:14,307 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 15:35:14,500 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 15:35:14,501 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:14,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:14,501 INFO L82 PathProgramCache]: Analyzing trace with hash -2072472300, now seen corresponding path program 2 times [2021-10-07 15:35:14,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:14,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [713017992] [2021-10-07 15:35:14,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:35:14,503 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:14,504 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 15:35:14,505 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 15:35:15,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:35:15,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:35:15,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:35:15,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:15,644 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:15,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:15,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:15,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [713017992] [2021-10-07 15:35:15,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [713017992] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:35:15,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:35:15,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:35:15,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415222286] [2021-10-07 15:35:15,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:35:15,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:15,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:35:15,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:35:15,858 INFO L87 Difference]: Start difference. First operand 314 states and 1088 transitions. Second operand has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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 15:35:16,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:16,237 INFO L93 Difference]: Finished difference Result 444 states and 1294 transitions. [2021-10-07 15:35:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:35:16,239 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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 23 [2021-10-07 15:35:16,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:16,242 INFO L225 Difference]: With dead ends: 444 [2021-10-07 15:35:16,242 INFO L226 Difference]: Without dead ends: 444 [2021-10-07 15:35:16,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 214.9ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:35:16,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-10-07 15:35:16,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 284. [2021-10-07 15:35:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 3.4184397163120566) internal successors, (964), 283 states have internal predecessors, (964), 0 states have call successors, (0), 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 15:35:16,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 964 transitions. [2021-10-07 15:35:16,253 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 964 transitions. Word has length 23 [2021-10-07 15:35:16,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:16,254 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 964 transitions. [2021-10-07 15:35:16,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 14 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 15:35:16,254 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 964 transitions. [2021-10-07 15:35:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:35:16,255 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:16,255 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:16,275 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 15:35:16,469 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 15:35:16,470 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:16,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:16,471 INFO L82 PathProgramCache]: Analyzing trace with hash -544621875, now seen corresponding path program 1 times [2021-10-07 15:35:16,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:16,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880421058] [2021-10-07 15:35:16,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:35:16,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:16,474 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 15:35:16,475 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 15:35:17,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:35:17,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:35:17,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:17,449 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:17,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:17,528 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:17,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:17,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880421058] [2021-10-07 15:35:17,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880421058] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:35:17,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:35:17,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-07 15:35:17,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491121162] [2021-10-07 15:35:17,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:35:17,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:17,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:35:17,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:35:17,531 INFO L87 Difference]: Start difference. First operand 284 states and 964 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 15:35:17,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:17,609 INFO L93 Difference]: Finished difference Result 406 states and 1217 transitions. [2021-10-07 15:35:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:35:17,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 25 [2021-10-07 15:35:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:17,612 INFO L225 Difference]: With dead ends: 406 [2021-10-07 15:35:17,612 INFO L226 Difference]: Without dead ends: 406 [2021-10-07 15:35:17,613 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:35:17,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-10-07 15:35:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 298. [2021-10-07 15:35:17,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 296 states have (on average 3.3412162162162162) internal successors, (989), 297 states have internal predecessors, (989), 0 states have call successors, (0), 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 15:35:17,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 989 transitions. [2021-10-07 15:35:17,623 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 989 transitions. Word has length 25 [2021-10-07 15:35:17,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 989 transitions. [2021-10-07 15:35:17,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 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 15:35:17,624 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 989 transitions. [2021-10-07 15:35:17,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:35:17,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:17,625 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:17,647 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 15:35:17,838 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 15:35:17,839 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:17,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1385222669, now seen corresponding path program 2 times [2021-10-07 15:35:17,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:17,841 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843862116] [2021-10-07 15:35:17,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:35:17,841 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:17,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:17,843 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 15:35:17,844 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 15:35:18,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:35:18,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:35:18,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:35:18,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:18,689 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:18,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:18,755 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:18,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843862116] [2021-10-07 15:35:18,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843862116] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:35:18,756 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:35:18,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-07 15:35:18,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300027362] [2021-10-07 15:35:18,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:35:18,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:18,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:35:18,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:35:18,758 INFO L87 Difference]: Start difference. First operand 298 states and 989 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 15:35:18,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:18,871 INFO L93 Difference]: Finished difference Result 406 states and 1213 transitions. [2021-10-07 15:35:18,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:35:18,872 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 25 [2021-10-07 15:35:18,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:18,874 INFO L225 Difference]: With dead ends: 406 [2021-10-07 15:35:18,875 INFO L226 Difference]: Without dead ends: 400 [2021-10-07 15:35:18,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.2ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:35:18,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-10-07 15:35:18,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 298. [2021-10-07 15:35:18,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 296 states have (on average 3.3277027027027026) internal successors, (985), 297 states have internal predecessors, (985), 0 states have call successors, (0), 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 15:35:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 985 transitions. [2021-10-07 15:35:18,885 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 985 transitions. Word has length 25 [2021-10-07 15:35:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:18,886 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 985 transitions. [2021-10-07 15:35:18,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 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 15:35:18,886 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 985 transitions. [2021-10-07 15:35:18,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:35:18,887 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:18,887 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:18,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 15:35:19,101 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 15:35:19,102 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:19,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:19,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1955814569, now seen corresponding path program 3 times [2021-10-07 15:35:19,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:19,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103218857] [2021-10-07 15:35:19,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:35:19,104 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:19,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:19,105 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 15:35:19,106 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 15:35:19,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:35:19,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:35:19,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:35:19,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:19,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:19,997 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:19,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103218857] [2021-10-07 15:35:19,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103218857] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:35:19,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:35:19,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-10-07 15:35:19,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130272810] [2021-10-07 15:35:19,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 15:35:19,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 15:35:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:35:19,999 INFO L87 Difference]: Start difference. First operand 298 states and 985 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 15:35:20,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:20,127 INFO L93 Difference]: Finished difference Result 392 states and 1214 transitions. [2021-10-07 15:35:20,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:35:20,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 25 [2021-10-07 15:35:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:20,132 INFO L225 Difference]: With dead ends: 392 [2021-10-07 15:35:20,132 INFO L226 Difference]: Without dead ends: 392 [2021-10-07 15:35:20,132 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-07 15:35:20,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-10-07 15:35:20,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 284. [2021-10-07 15:35:20,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 282 states have (on average 3.2907801418439715) internal successors, (928), 283 states have internal predecessors, (928), 0 states have call successors, (0), 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 15:35:20,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 928 transitions. [2021-10-07 15:35:20,151 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 928 transitions. Word has length 25 [2021-10-07 15:35:20,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:20,152 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 928 transitions. [2021-10-07 15:35:20,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 15:35:20,153 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 928 transitions. [2021-10-07 15:35:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:35:20,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:20,155 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:20,172 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 15:35:20,371 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 15:35:20,371 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:20,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1441030584, now seen corresponding path program 1 times [2021-10-07 15:35:20,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:20,373 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1541571204] [2021-10-07 15:35:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:35:20,374 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:20,374 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:20,375 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 15:35:20,376 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 15:35:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:35:21,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:35:21,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:22,342 INFO L354 Elim1Store]: treesize reduction 204, result has 45.3 percent of original size [2021-10-07 15:35:22,342 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 102 treesize of output 226 [2021-10-07 15:35:22,359 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:35:22,359 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 226 treesize of output 222 [2021-10-07 15:35:22,395 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:35:22,395 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 211 treesize of output 215 [2021-10-07 15:35:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:24,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:24,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:24,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1541571204] [2021-10-07 15:35:24,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1541571204] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:35:24,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:35:24,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 6 [2021-10-07 15:35:24,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840618268] [2021-10-07 15:35:24,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:35:24,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:24,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:35:24,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:35:24,678 INFO L87 Difference]: Start difference. First operand 284 states and 928 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 15:35:25,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:25,022 INFO L93 Difference]: Finished difference Result 461 states and 1377 transitions. [2021-10-07 15:35:25,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:35:25,023 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 26 [2021-10-07 15:35:25,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:25,025 INFO L225 Difference]: With dead ends: 461 [2021-10-07 15:35:25,025 INFO L226 Difference]: Without dead ends: 446 [2021-10-07 15:35:25,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 148.9ms TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:35:25,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2021-10-07 15:35:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 362. [2021-10-07 15:35:25,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 360 states have (on average 3.2888888888888888) internal successors, (1184), 361 states have internal predecessors, (1184), 0 states have call successors, (0), 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 15:35:25,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1184 transitions. [2021-10-07 15:35:25,037 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1184 transitions. Word has length 26 [2021-10-07 15:35:25,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:25,037 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 1184 transitions. [2021-10-07 15:35:25,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 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 15:35:25,038 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1184 transitions. [2021-10-07 15:35:25,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:35:25,039 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:25,039 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:25,058 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 15:35:25,252 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 15:35:25,253 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:25,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash 575251254, now seen corresponding path program 2 times [2021-10-07 15:35:25,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:25,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875641139] [2021-10-07 15:35:25,255 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:35:25,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:25,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:25,256 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 15:35:25,258 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 15:35:26,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:35:26,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:35:26,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:35:26,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:26,361 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:26,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:26,594 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:26,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:26,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875641139] [2021-10-07 15:35:26,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875641139] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:35:26,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:35:26,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 15:35:26,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313008829] [2021-10-07 15:35:26,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-07 15:35:26,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:26,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-07 15:35:26,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:35:26,597 INFO L87 Difference]: Start difference. First operand 362 states and 1184 transitions. Second operand has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 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 15:35:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:26,926 INFO L93 Difference]: Finished difference Result 544 states and 1506 transitions. [2021-10-07 15:35:26,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:35:26,927 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 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 26 [2021-10-07 15:35:26,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:26,932 INFO L225 Difference]: With dead ends: 544 [2021-10-07 15:35:26,932 INFO L226 Difference]: Without dead ends: 544 [2021-10-07 15:35:26,932 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 219.3ms TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-07 15:35:26,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-07 15:35:26,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 338. [2021-10-07 15:35:26,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.2195845697329375) internal successors, (1085), 337 states have internal predecessors, (1085), 0 states have call successors, (0), 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 15:35:26,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1085 transitions. [2021-10-07 15:35:26,946 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1085 transitions. Word has length 26 [2021-10-07 15:35:26,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:26,946 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1085 transitions. [2021-10-07 15:35:26,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 14 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 15:35:26,946 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1085 transitions. [2021-10-07 15:35:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:35:26,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:26,948 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:26,974 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 15:35:27,162 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 15:35:27,163 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:27,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:27,164 INFO L82 PathProgramCache]: Analyzing trace with hash 977406725, now seen corresponding path program 1 times [2021-10-07 15:35:27,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:27,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105436968] [2021-10-07 15:35:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:35:27,165 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:27,167 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 15:35:27,169 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 15:35:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:35:28,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:35:28,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:28,999 INFO L354 Elim1Store]: treesize reduction 232, result has 42.1 percent of original size [2021-10-07 15:35:29,000 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 110 treesize of output 230 [2021-10-07 15:35:29,024 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:35:29,024 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 230 treesize of output 226 [2021-10-07 15:35:29,071 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:35:29,071 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 215 treesize of output 219 [2021-10-07 15:35:32,715 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:32,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:34,115 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-07 15:35:34,116 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 212 treesize of output 342 [2021-10-07 15:35:34,183 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:35:34,184 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 342 treesize of output 346 [2021-10-07 15:35:34,230 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:35:34,231 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 346 treesize of output 350 [2021-10-07 15:35:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:45,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:45,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105436968] [2021-10-07 15:35:45,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105436968] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:35:45,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:35:45,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-07 15:35:45,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563491179] [2021-10-07 15:35:45,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:35:45,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:35:45,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:35:45,752 INFO L87 Difference]: Start difference. First operand 338 states and 1085 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 15:35:46,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:46,456 INFO L93 Difference]: Finished difference Result 575 states and 1617 transitions. [2021-10-07 15:35:46,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:35:46,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 27 [2021-10-07 15:35:46,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:46,461 INFO L225 Difference]: With dead ends: 575 [2021-10-07 15:35:46,462 INFO L226 Difference]: Without dead ends: 560 [2021-10-07 15:35:46,462 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 423.8ms TimeCoverageRelationStatistics Valid=107, Invalid=199, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:35:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-10-07 15:35:46,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 404. [2021-10-07 15:35:46,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.225806451612903) internal successors, (1300), 403 states have internal predecessors, (1300), 0 states have call successors, (0), 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 15:35:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1300 transitions. [2021-10-07 15:35:46,477 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1300 transitions. Word has length 27 [2021-10-07 15:35:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:46,478 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1300 transitions. [2021-10-07 15:35:46,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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 15:35:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1300 transitions. [2021-10-07 15:35:46,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:35:46,480 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:46,480 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:46,506 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 15:35:46,693 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 15:35:46,693 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:46,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1181697283, now seen corresponding path program 2 times [2021-10-07 15:35:46,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:46,695 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086458096] [2021-10-07 15:35:46,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:35:46,695 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:46,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:46,697 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 15:35:46,702 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 15:35:47,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:35:47,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:35:47,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:35:47,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:48,713 INFO L354 Elim1Store]: treesize reduction 232, result has 42.1 percent of original size [2021-10-07 15:35:48,713 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 110 treesize of output 230 [2021-10-07 15:35:48,728 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:35:48,729 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 230 treesize of output 226 [2021-10-07 15:35:48,765 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:35:48,765 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 215 treesize of output 219 [2021-10-07 15:35:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:53,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:35:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:35:53,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:35:53,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086458096] [2021-10-07 15:35:53,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086458096] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:35:53,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:35:53,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-07 15:35:53,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521835982] [2021-10-07 15:35:53,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-07 15:35:53,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:35:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-07 15:35:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 15:35:53,339 INFO L87 Difference]: Start difference. First operand 404 states and 1300 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 15:35:53,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:35:53,871 INFO L93 Difference]: Finished difference Result 579 states and 1602 transitions. [2021-10-07 15:35:53,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:35:53,871 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 27 [2021-10-07 15:35:53,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:35:53,874 INFO L225 Difference]: With dead ends: 579 [2021-10-07 15:35:53,874 INFO L226 Difference]: Without dead ends: 564 [2021-10-07 15:35:53,875 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 306.4ms TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:35:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-10-07 15:35:53,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 400. [2021-10-07 15:35:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.243107769423559) internal successors, (1294), 399 states have internal predecessors, (1294), 0 states have call successors, (0), 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 15:35:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1294 transitions. [2021-10-07 15:35:53,889 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1294 transitions. Word has length 27 [2021-10-07 15:35:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:35:53,890 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1294 transitions. [2021-10-07 15:35:53,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 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 15:35:53,890 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1294 transitions. [2021-10-07 15:35:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-07 15:35:53,891 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:35:53,892 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:35:53,913 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-07 15:35:54,106 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 15:35:54,107 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:35:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:35:54,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1520705949, now seen corresponding path program 3 times [2021-10-07 15:35:54,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:35:54,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169449128] [2021-10-07 15:35:54,109 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:35:54,109 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:35:54,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:35:54,110 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 15:35:54,117 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 15:35:55,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 15:35:55,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:35:55,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 15:35:55,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:35:56,169 INFO L354 Elim1Store]: treesize reduction 232, result has 42.1 percent of original size [2021-10-07 15:35:56,170 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 110 treesize of output 230 [2021-10-07 15:35:56,190 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:35:56,191 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 230 treesize of output 226 [2021-10-07 15:35:56,255 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:35:56,255 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 215 treesize of output 219 [2021-10-07 15:36:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:36:00,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:02,125 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-07 15:36:02,126 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 212 treesize of output 342 [2021-10-07 15:36:02,173 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:36:02,173 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 342 treesize of output 346 [2021-10-07 15:36:02,211 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:36:02,211 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 346 treesize of output 350 [2021-10-07 15:36:10,739 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:36:10,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:10,740 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169449128] [2021-10-07 15:36:10,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169449128] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:36:10,740 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:36:10,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-07 15:36:10,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092253135] [2021-10-07 15:36:10,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 15:36:10,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:10,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 15:36:10,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 15:36:10,742 INFO L87 Difference]: Start difference. First operand 400 states and 1294 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 15:36:11,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:11,409 INFO L93 Difference]: Finished difference Result 583 states and 1592 transitions. [2021-10-07 15:36:11,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:36:11,410 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 27 [2021-10-07 15:36:11,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:11,413 INFO L225 Difference]: With dead ends: 583 [2021-10-07 15:36:11,413 INFO L226 Difference]: Without dead ends: 568 [2021-10-07 15:36:11,414 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 413.5ms TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:36:11,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2021-10-07 15:36:11,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 320. [2021-10-07 15:36:11,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.9780564263322886) internal successors, (950), 319 states have internal predecessors, (950), 0 states have call successors, (0), 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 15:36:11,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 950 transitions. [2021-10-07 15:36:11,424 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 950 transitions. Word has length 27 [2021-10-07 15:36:11,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:11,425 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 950 transitions. [2021-10-07 15:36:11,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 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 15:36:11,425 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 950 transitions. [2021-10-07 15:36:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:36:11,427 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:11,427 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:11,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-07 15:36:11,641 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 15:36:11,641 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:36:11,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:11,642 INFO L82 PathProgramCache]: Analyzing trace with hash 306223621, now seen corresponding path program 1 times [2021-10-07 15:36:11,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:11,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993267256] [2021-10-07 15:36:11,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:11,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:11,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:11,645 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 15:36:11,650 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 15:36:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:12,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 15:36:12,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:36:12,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:13,049 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 15:36:13,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:36:13,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993267256] [2021-10-07 15:36:13,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993267256] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:36:13,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:36:13,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-10-07 15:36:13,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744570192] [2021-10-07 15:36:13,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:36:13,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:36:13,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:36:13,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:36:13,052 INFO L87 Difference]: Start difference. First operand 320 states and 950 transitions. Second operand has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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 15:36:13,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:36:13,328 INFO L93 Difference]: Finished difference Result 548 states and 1343 transitions. [2021-10-07 15:36:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:36:13,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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 29 [2021-10-07 15:36:13,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:36:13,331 INFO L225 Difference]: With dead ends: 548 [2021-10-07 15:36:13,331 INFO L226 Difference]: Without dead ends: 548 [2021-10-07 15:36:13,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 139.7ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:36:13,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-10-07 15:36:13,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 320. [2021-10-07 15:36:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.7899686520376177) internal successors, (890), 319 states have internal predecessors, (890), 0 states have call successors, (0), 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 15:36:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 890 transitions. [2021-10-07 15:36:13,343 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 890 transitions. Word has length 29 [2021-10-07 15:36:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:36:13,344 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 890 transitions. [2021-10-07 15:36:13,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.2) internal successors, (32), 10 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 15:36:13,344 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 890 transitions. [2021-10-07 15:36:13,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-10-07 15:36:13,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:36:13,345 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:36:13,367 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 15:36:13,558 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 15:36:13,559 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread1Err2REQUIRES_VIOLATION, thread1Err3REQUIRES_VIOLATION (and 28 more)] === [2021-10-07 15:36:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:36:13,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2087909625, now seen corresponding path program 1 times [2021-10-07 15:36:13,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:36:13,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559089667] [2021-10-07 15:36:13,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:36:13,561 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:36:13,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:36:13,563 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:36:13,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 15:36:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:36:14,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:36:14,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:36:15,695 INFO L354 Elim1Store]: treesize reduction 232, result has 42.1 percent of original size [2021-10-07 15:36:15,696 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 110 treesize of output 230 [2021-10-07 15:36:15,713 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-07 15:36:15,713 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 230 treesize of output 226 [2021-10-07 15:36:15,752 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:36:15,753 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 215 treesize of output 219 [2021-10-07 15:36:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-10-07 15:36:18,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:36:19,992 INFO L354 Elim1Store]: treesize reduction 338, result has 37.3 percent of original size [2021-10-07 15:36:19,993 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 212 treesize of output 342 [2021-10-07 15:36:20,035 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:36:20,035 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 342 treesize of output 346 [2021-10-07 15:36:20,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-07 15:36:20,080 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 346 treesize of output 350 Received shutdown request... [2021-10-07 15:36:22,512 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 15:36:22,521 WARN L223 SmtUtils]: Removed 1 from assertion stack [2021-10-07 15:36:22,523 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:36:22,530 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-07 15:36:22,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 15:36:22,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:36:22,725 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. [2021-10-07 15:36:22,728 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:36:22,728 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:36:22,728 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 15:36:22,728 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 15:36:22,728 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:36:22,729 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-07 15:36:22,730 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2REQUIRES_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err3REQUIRES_VIOLATION [2021-10-07 15:36:22,731 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-07 15:36:22,732 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-07 15:36:22,732 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err2REQUIRES_VIOLATION [2021-10-07 15:36:22,732 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err3REQUIRES_VIOLATION [2021-10-07 15:36:22,738 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:36:22,738 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:36:22,740 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:36:22 BasicIcfg [2021-10-07 15:36:22,740 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:36:22,741 INFO L168 Benchmark]: Toolchain (without parser) took 804889.81 ms. Allocated memory was 170.9 MB in the beginning and 220.2 MB in the end (delta: 49.3 MB). Free memory was 144.6 MB in the beginning and 55.3 MB in the end (delta: 89.3 MB). Peak memory consumption was 158.2 MB. Max. memory is 8.0 GB. [2021-10-07 15:36:22,742 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 170.9 MB. Free memory was 142.2 MB in the beginning and 141.8 MB in the end (delta: 424.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:36:22,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 522.09 ms. Allocated memory is still 170.9 MB. Free memory was 144.3 MB in the beginning and 131.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:36:22,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.13 ms. Allocated memory is still 170.9 MB. Free memory was 131.5 MB in the beginning and 129.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:36:22,743 INFO L168 Benchmark]: Boogie Preprocessor took 39.21 ms. Allocated memory is still 170.9 MB. Free memory was 129.4 MB in the beginning and 127.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:36:22,743 INFO L168 Benchmark]: RCFGBuilder took 845.83 ms. Allocated memory is still 170.9 MB. Free memory was 127.6 MB in the beginning and 145.4 MB in the end (delta: -17.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:36:22,743 INFO L168 Benchmark]: TraceAbstraction took 803402.68 ms. Allocated memory was 170.9 MB in the beginning and 220.2 MB in the end (delta: 49.3 MB). Free memory was 144.9 MB in the beginning and 55.3 MB in the end (delta: 89.6 MB). Peak memory consumption was 157.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:36:22,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 170.9 MB. Free memory was 142.2 MB in the beginning and 141.8 MB in the end (delta: 424.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 522.09 ms. Allocated memory is still 170.9 MB. Free memory was 144.3 MB in the beginning and 131.5 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 62.13 ms. Allocated memory is still 170.9 MB. Free memory was 131.5 MB in the beginning and 129.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.21 ms. Allocated memory is still 170.9 MB. Free memory was 129.4 MB in the beginning and 127.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 845.83 ms. Allocated memory is still 170.9 MB. Free memory was 127.6 MB in the beginning and 145.4 MB in the end (delta: -17.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 803402.68 ms. Allocated memory was 170.9 MB in the beginning and 220.2 MB in the end (delta: 49.3 MB). Free memory was 144.9 MB in the beginning and 55.3 MB in the end (delta: 89.6 MB). Peak memory consumption was 157.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 23256.2ms, 188 PlacesBefore, 47 PlacesAfterwards, 200 TransitionsBefore, 45 TransitionsAfterwards, 2548 CoEnabledTransitionPairs, 7 FixpointIterations, 117 TrivialSequentialCompositions, 60 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 8 ConcurrentYvCompositions, 14 ChoiceCompositions, 221 TotalNumberOfCompositions, 3106 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2697, positive: 2657, positive conditional: 0, positive unconditional: 2657, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1645, positive: 1635, positive conditional: 0, positive unconditional: 1635, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1645, positive: 1635, positive conditional: 0, positive unconditional: 1635, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 740, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 740, negative conditional: 0, negative unconditional: 740, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2697, positive: 1022, positive conditional: 0, positive unconditional: 1022, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1645, unknown conditional: 0, unknown unconditional: 1645] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4 - 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: 92]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 75]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was analyzing trace of length 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - 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 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - TimeoutResultAtElement [Line: 85]: 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 30 with TraceHistMax 5,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 3ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 230 locations, 32 error locations. Started 1 CEGAR loops. OverallTime: 803231.3ms, OverallIterations: 32, TraceHistogramMax: 5, EmptinessCheckTime: 44.7ms, AutomataDifference: 91842.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23348.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 808 SDtfs, 3402 SDslu, 2351 SDs, 0 SdLazy, 2509 SolverSat, 334 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 53680.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1127 GetRequests, 858 SyntacticMatches, 4 SemanticMatches, 265 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 62316.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=28, InterpolantAutomatonStates: 222, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 425.6ms AutomataMinimizationTime, 31 MinimizatonAttempts, 4090 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 367.4ms SsaConstructionTime, 4981.1ms SatisfiabilityAnalysisTime, 654752.9ms InterpolantComputationTime, 544 NumberOfCodeBlocks, 493 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1026 ConstructedInterpolants, 201 QuantifiedInterpolants, 26857 SizeOfPredicates, 218 NumberOfNonLiveVariables, 4030 ConjunctsInSsa, 256 ConjunctsInUnsatCore, 62 InterpolantComputations, 36 PerfectInterpolantSequences, 1536/1700 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