/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:38:47,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:38:47,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:38:47,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:38:47,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 17:38:47,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 17:38:47,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 17:38:47,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 17:38:47,825 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 17:38:47,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 17:38:47,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 17:38:47,839 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 17:38:47,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 17:38:47,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 17:38:47,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 17:38:47,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 17:38:47,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 17:38:47,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-08 17:38:47,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-08 17:38:47,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-08 17:38:47,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-08 17:38:47,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-08 17:38:47,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-08 17:38:47,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-08 17:38:47,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-08 17:38:47,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:38:47,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:38:47,884 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:38:47,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:38:47,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:38:47,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:38:47,942 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:38:47,942 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:38:47,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:38:47,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:38:47,947 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:38:47,947 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:38:47,947 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:38:47,948 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:38:47,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:38:47,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:38:47,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:38:47,950 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:38:47,950 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:38:47,950 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:38:47,950 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:38:47,951 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:38:47,951 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:38:47,951 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:38:47,951 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:38:47,951 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:38:47,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:38:47,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:38:47,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:38:47,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:38:47,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:38:47,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:38:47,953 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:38:47,953 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:38:47,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:38:47,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:38:47,954 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:38:48,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:38:48,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:38:48,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:38:48,411 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:38:48,412 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:38:48,413 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2021-10-08 17:38:48,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d37645b25/67a4ddd97b6c4d1eb5cb1b335e75fdfb/FLAG81805a461 [2021-10-08 17:38:49,286 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:38:49,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2021-10-08 17:38:49,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d37645b25/67a4ddd97b6c4d1eb5cb1b335e75fdfb/FLAG81805a461 [2021-10-08 17:38:49,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d37645b25/67a4ddd97b6c4d1eb5cb1b335e75fdfb [2021-10-08 17:38:49,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:38:49,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:38:49,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:38:49,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:38:49,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:38:49,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:38:49" (1/1) ... [2021-10-08 17:38:49,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ac3f626 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:49, skipping insertion in model container [2021-10-08 17:38:49,621 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:38:49" (1/1) ... [2021-10-08 17:38:49,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:38:49,662 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:38:49,970 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2332,2345] [2021-10-08 17:38:49,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:38:50,000 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-10-08 17:38:50,006 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:38:50,021 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2332,2345] [2021-10-08 17:38:50,028 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:38:50,040 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:38:50,101 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2332,2345] [2021-10-08 17:38:50,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:38:50,143 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:38:50,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50 WrapperNode [2021-10-08 17:38:50,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:38:50,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:38:50,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:38:50,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:38:50,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:38:50,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:38:50,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:38:50,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:38:50,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:38:50,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:38:50,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:38:50,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:38:50,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (1/1) ... [2021-10-08 17:38:50,298 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:38:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:38:50,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:38:50,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:38:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:38:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:38:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:38:50,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:38:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:38:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:38:50,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:38:50,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-08 17:38:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-08 17:38:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-08 17:38:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:38:50,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:38:50,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:38:50,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:38:50,407 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:38:51,153 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:38:51,154 INFO L299 CfgBuilder]: Removed 36 assume(true) statements. [2021-10-08 17:38:51,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:38:51 BoogieIcfgContainer [2021-10-08 17:38:51,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:38:51,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:38:51,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:38:51,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:38:51,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:38:49" (1/3) ... [2021-10-08 17:38:51,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca52d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:38:51, skipping insertion in model container [2021-10-08 17:38:51,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:38:50" (2/3) ... [2021-10-08 17:38:51,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca52d1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:38:51, skipping insertion in model container [2021-10-08 17:38:51,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:38:51" (3/3) ... [2021-10-08 17:38:51,167 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2021-10-08 17:38:51,174 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:38:51,174 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-08 17:38:51,174 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:38:51,226 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,226 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,227 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,231 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,231 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,232 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,232 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,232 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,232 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,232 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,233 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,233 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,233 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,234 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,234 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,234 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,235 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,236 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,237 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,237 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,237 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,237 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,237 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,238 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,238 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,238 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,239 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,239 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,239 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,239 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,239 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,240 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,240 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,240 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,240 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,241 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,241 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,241 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,241 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,242 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,242 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,242 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,242 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,243 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,243 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,243 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,243 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,243 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,244 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,244 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,244 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,244 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,245 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,245 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,245 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,245 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,245 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,246 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,246 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,246 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,246 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,247 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,247 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,247 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,247 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,247 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,248 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,249 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,250 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,250 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,250 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,250 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,251 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,251 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,251 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,251 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,251 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,252 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,252 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,252 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,253 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,253 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,253 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,254 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,254 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,254 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,254 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,255 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,255 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,256 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,256 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,256 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,257 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,257 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,257 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,258 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,258 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,258 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,258 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,258 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,259 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,259 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,259 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,259 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,260 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,260 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,260 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,260 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,261 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,261 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,262 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,262 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,263 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,263 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,264 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,264 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,264 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,264 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,265 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,266 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,266 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,267 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,267 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,268 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,268 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,268 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,268 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,269 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,269 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,269 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,269 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,269 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,270 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,270 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,271 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,272 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,272 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,272 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,273 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,273 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,273 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,274 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,274 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,275 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,275 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,275 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,275 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,275 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,276 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,276 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,276 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,276 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,276 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,277 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,277 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,277 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,277 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,278 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,279 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,279 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,279 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,280 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,280 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,280 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,280 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,281 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,281 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,282 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,282 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,282 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,282 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,282 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,283 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,283 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,283 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,283 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,283 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,284 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,284 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,285 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,285 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,285 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,285 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,285 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,286 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,286 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,286 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,286 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,286 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,287 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,287 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,287 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,287 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,287 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,288 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,288 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,288 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,288 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,288 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,288 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,289 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,290 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,290 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,290 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,291 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,291 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,291 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,291 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,291 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,291 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,292 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,295 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,296 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,296 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,297 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,297 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,297 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,297 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,297 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,298 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,302 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,303 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,303 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,303 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,303 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,304 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,304 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,305 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,305 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,305 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ret11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,307 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ret8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~b| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,308 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_plus_#in~a| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,308 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,309 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,309 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,309 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~b not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,309 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_plus_~a not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,310 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:38:51,317 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-08 17:38:51,373 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:38:51,382 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:38:51,382 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-10-08 17:38:51,404 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:38:51,418 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 218 places, 226 transitions, 476 flow [2021-10-08 17:38:51,421 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 218 places, 226 transitions, 476 flow [2021-10-08 17:38:51,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 218 places, 226 transitions, 476 flow [2021-10-08 17:38:51,527 INFO L129 PetriNetUnfolder]: 18/223 cut-off events. [2021-10-08 17:38:51,527 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-08 17:38:51,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 236 conditions, 223 events. 18/223 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 442 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 155. Up to 2 conditions per place. [2021-10-08 17:38:51,549 INFO L116 LiptonReduction]: Number of co-enabled transitions 10608 [2021-10-08 17:39:15,941 INFO L131 LiptonReduction]: Checked pairs total: 11981 [2021-10-08 17:39:15,942 INFO L133 LiptonReduction]: Total number of compositions: 250 [2021-10-08 17:39:15,953 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 53 transitions, 130 flow [2021-10-08 17:39:16,049 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1202 states, 1068 states have (on average 4.060861423220974) internal successors, (4337), 1201 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:16,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 1202 states, 1068 states have (on average 4.060861423220974) internal successors, (4337), 1201 states have internal predecessors, (4337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:16,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:39:16,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:16,068 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:39:16,069 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:16,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:16,076 INFO L82 PathProgramCache]: Analyzing trace with hash 29161, now seen corresponding path program 1 times [2021-10-08 17:39:16,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:16,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1655075279] [2021-10-08 17:39:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:16,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:16,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:16,105 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:16,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:39:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:16,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 17:39:16,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:16,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:16,692 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:16,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:16,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:16,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:16,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:16,992 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:16,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1655075279] [2021-10-08 17:39:16,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1655075279] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:16,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:16,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:39:16,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977449130] [2021-10-08 17:39:17,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:17,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:17,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:17,031 INFO L87 Difference]: Start difference. First operand has 1202 states, 1068 states have (on average 4.060861423220974) internal successors, (4337), 1201 states have internal predecessors, (4337), 0 states have call successors, (0), 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) [2021-10-08 17:39:17,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:17,620 INFO L93 Difference]: Finished difference Result 2402 states and 8347 transitions. [2021-10-08 17:39:17,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:39:17,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 17:39:17,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:17,673 INFO L225 Difference]: With dead ends: 2402 [2021-10-08 17:39:17,673 INFO L226 Difference]: Without dead ends: 2402 [2021-10-08 17:39:17,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2021-10-08 17:39:17,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 1203. [2021-10-08 17:39:17,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1070 states have (on average 3.908411214953271) internal successors, (4182), 1202 states have internal predecessors, (4182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:17,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 4182 transitions. [2021-10-08 17:39:17,822 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 4182 transitions. Word has length 2 [2021-10-08 17:39:17,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:17,823 INFO L470 AbstractCegarLoop]: Abstraction has 1203 states and 4182 transitions. [2021-10-08 17:39:17,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:17,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 4182 transitions. [2021-10-08 17:39:17,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:39:17,824 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:17,824 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:39:17,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:18,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:18,026 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:18,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:18,027 INFO L82 PathProgramCache]: Analyzing trace with hash 29162, now seen corresponding path program 1 times [2021-10-08 17:39:18,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:18,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700361280] [2021-10-08 17:39:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:18,028 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:18,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:18,033 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:39:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:18,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:39:18,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:18,184 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:39:18,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 17:39:18,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:18,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:18,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:18,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:18,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700361280] [2021-10-08 17:39:18,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700361280] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:18,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:18,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:39:18,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542986740] [2021-10-08 17:39:18,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:39:18,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:39:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:39:18,236 INFO L87 Difference]: Start difference. First operand 1203 states and 4182 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) [2021-10-08 17:39:18,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:18,426 INFO L93 Difference]: Finished difference Result 1202 states and 4179 transitions. [2021-10-08 17:39:18,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:18,427 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 17:39:18,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:18,440 INFO L225 Difference]: With dead ends: 1202 [2021-10-08 17:39:18,440 INFO L226 Difference]: Without dead ends: 1202 [2021-10-08 17:39:18,441 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:39:18,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2021-10-08 17:39:18,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2021-10-08 17:39:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1202 states, 1070 states have (on average 3.905607476635514) internal successors, (4179), 1201 states have internal predecessors, (4179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:18,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 4179 transitions. [2021-10-08 17:39:18,498 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 4179 transitions. Word has length 2 [2021-10-08 17:39:18,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:18,499 INFO L470 AbstractCegarLoop]: Abstraction has 1202 states and 4179 transitions. [2021-10-08 17:39:18,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:18,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 4179 transitions. [2021-10-08 17:39:18,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:39:18,499 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:18,500 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:39:18,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-08 17:39:18,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:18,712 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:18,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:18,714 INFO L82 PathProgramCache]: Analyzing trace with hash 29362, now seen corresponding path program 1 times [2021-10-08 17:39:18,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:18,715 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530407482] [2021-10-08 17:39:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:18,715 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:18,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:18,717 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:18,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:39:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:18,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:39:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:18,863 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:39:18,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 27 treesize of output 39 [2021-10-08 17:39:18,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:18,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:18,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:18,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:18,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530407482] [2021-10-08 17:39:18,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530407482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:18,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:18,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:39:18,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166304139] [2021-10-08 17:39:18,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:18,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:18,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:18,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:18,932 INFO L87 Difference]: Start difference. First operand 1202 states and 4179 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:19,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:19,070 INFO L93 Difference]: Finished difference Result 991 states and 3336 transitions. [2021-10-08 17:39:19,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:19,071 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 17:39:19,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:19,081 INFO L225 Difference]: With dead ends: 991 [2021-10-08 17:39:19,082 INFO L226 Difference]: Without dead ends: 991 [2021-10-08 17:39:19,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-10-08 17:39:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 991. [2021-10-08 17:39:19,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 991 states, 887 states have (on average 3.760992108229989) internal successors, (3336), 990 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:19,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 3336 transitions. [2021-10-08 17:39:19,163 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 3336 transitions. Word has length 2 [2021-10-08 17:39:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:19,163 INFO L470 AbstractCegarLoop]: Abstraction has 991 states and 3336 transitions. [2021-10-08 17:39:19,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:19,164 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 3336 transitions. [2021-10-08 17:39:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2021-10-08 17:39:19,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:19,164 INFO L512 BasicCegarLoop]: trace histogram [1, 1] [2021-10-08 17:39:19,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:19,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:19,378 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:19,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:19,379 INFO L82 PathProgramCache]: Analyzing trace with hash 29364, now seen corresponding path program 1 times [2021-10-08 17:39:19,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:19,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053529621] [2021-10-08 17:39:19,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:19,380 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:19,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:19,382 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:19,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:39:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:19,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 17:39:19,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:19,931 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-08 17:39:19,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 52 treesize of output 98 [2021-10-08 17:39:19,948 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-08 17:39:19,949 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 101 treesize of output 97 [2021-10-08 17:39:21,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:21,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:21,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:21,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053529621] [2021-10-08 17:39:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053529621] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:21,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:21,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:39:21,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532228097] [2021-10-08 17:39:21,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:21,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:21,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:21,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:21,800 INFO L87 Difference]: Start difference. First operand 991 states and 3336 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:22,046 INFO L93 Difference]: Finished difference Result 780 states and 2493 transitions. [2021-10-08 17:39:22,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:22,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2021-10-08 17:39:22,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:22,056 INFO L225 Difference]: With dead ends: 780 [2021-10-08 17:39:22,056 INFO L226 Difference]: Without dead ends: 780 [2021-10-08 17:39:22,056 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2021-10-08 17:39:22,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2021-10-08 17:39:22,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 704 states have (on average 3.5411931818181817) internal successors, (2493), 779 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:22,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2493 transitions. [2021-10-08 17:39:22,146 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2493 transitions. Word has length 2 [2021-10-08 17:39:22,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:22,147 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 2493 transitions. [2021-10-08 17:39:22,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:22,147 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2493 transitions. [2021-10-08 17:39:22,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:39:22,147 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:22,148 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1] [2021-10-08 17:39:22,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:22,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:22,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:22,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:22,358 INFO L82 PathProgramCache]: Analyzing trace with hash 28212873, now seen corresponding path program 1 times [2021-10-08 17:39:22,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:22,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [58236174] [2021-10-08 17:39:22,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:22,360 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:22,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:22,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:39:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:22,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:39:22,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:22,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:22,758 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:22,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:22,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:23,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:23,433 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:23,433 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [58236174] [2021-10-08 17:39:23,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [58236174] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:23,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:23,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2021-10-08 17:39:23,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921199094] [2021-10-08 17:39:23,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:39:23,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:23,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:39:23,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:39:23,435 INFO L87 Difference]: Start difference. First operand 780 states and 2493 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:25,352 INFO L93 Difference]: Finished difference Result 4659 states and 14926 transitions. [2021-10-08 17:39:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 17:39:25,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 17:39:25,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:25,404 INFO L225 Difference]: With dead ends: 4659 [2021-10-08 17:39:25,404 INFO L226 Difference]: Without dead ends: 4659 [2021-10-08 17:39:25,405 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 793.6ms TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:39:25,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4659 states. [2021-10-08 17:39:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4659 to 784. [2021-10-08 17:39:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 708 states have (on average 3.5324858757062145) internal successors, (2501), 783 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 2501 transitions. [2021-10-08 17:39:25,490 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 2501 transitions. Word has length 4 [2021-10-08 17:39:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:25,490 INFO L470 AbstractCegarLoop]: Abstraction has 784 states and 2501 transitions. [2021-10-08 17:39:25,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:25,490 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 2501 transitions. [2021-10-08 17:39:25,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:39:25,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:25,491 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 17:39:25,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:25,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:25,710 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:25,711 INFO L82 PathProgramCache]: Analyzing trace with hash 28238239, now seen corresponding path program 1 times [2021-10-08 17:39:25,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:25,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751197196] [2021-10-08 17:39:25,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:25,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:25,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:25,714 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:25,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:39:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:25,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 17:39:25,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:26,127 INFO L354 Elim1Store]: treesize reduction 233, result has 21.3 percent of original size [2021-10-08 17:39:26,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 42 treesize of output 88 [2021-10-08 17:39:26,136 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 90 treesize of output 88 [2021-10-08 17:39:28,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:28,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:29,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:29,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751197196] [2021-10-08 17:39:29,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751197196] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:29,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:29,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:39:29,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445959616] [2021-10-08 17:39:29,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:29,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:29,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:29,056 INFO L87 Difference]: Start difference. First operand 784 states and 2501 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:29,269 INFO L93 Difference]: Finished difference Result 737 states and 2365 transitions. [2021-10-08 17:39:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 17:39:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:29,276 INFO L225 Difference]: With dead ends: 737 [2021-10-08 17:39:29,276 INFO L226 Difference]: Without dead ends: 737 [2021-10-08 17:39:29,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:29,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-10-08 17:39:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2021-10-08 17:39:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 673 states have (on average 3.514115898959881) internal successors, (2365), 736 states have internal predecessors, (2365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 2365 transitions. [2021-10-08 17:39:29,304 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 2365 transitions. Word has length 4 [2021-10-08 17:39:29,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:29,305 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 2365 transitions. [2021-10-08 17:39:29,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 2365 transitions. [2021-10-08 17:39:29,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-08 17:39:29,306 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:29,306 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-08 17:39:29,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:29,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:29,524 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:29,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:29,525 INFO L82 PathProgramCache]: Analyzing trace with hash 28238240, now seen corresponding path program 1 times [2021-10-08 17:39:29,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:29,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254029027] [2021-10-08 17:39:29,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:29,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:29,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:29,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:29,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:39:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:29,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:39:29,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:29,650 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:39:29,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 42 [2021-10-08 17:39:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:29,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:29,846 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:29,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254029027] [2021-10-08 17:39:29,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254029027] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:29,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:29,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:39:29,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710446055] [2021-10-08 17:39:29,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:29,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:29,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:29,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:29,848 INFO L87 Difference]: Start difference. First operand 737 states and 2365 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:29,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:29,942 INFO L93 Difference]: Finished difference Result 690 states and 2229 transitions. [2021-10-08 17:39:29,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:29,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-08 17:39:29,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:29,948 INFO L225 Difference]: With dead ends: 690 [2021-10-08 17:39:29,948 INFO L226 Difference]: Without dead ends: 690 [2021-10-08 17:39:29,949 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:29,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-08 17:39:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2021-10-08 17:39:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 638 states have (on average 3.493730407523511) internal successors, (2229), 689 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:29,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2229 transitions. [2021-10-08 17:39:29,974 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2229 transitions. Word has length 4 [2021-10-08 17:39:29,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:29,974 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 2229 transitions. [2021-10-08 17:39:29,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:29,974 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2229 transitions. [2021-10-08 17:39:29,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:39:29,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:29,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:39:29,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:30,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:30,187 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:30,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:30,188 INFO L82 PathProgramCache]: Analyzing trace with hash 875376571, now seen corresponding path program 1 times [2021-10-08 17:39:30,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:30,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187679075] [2021-10-08 17:39:30,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:30,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:30,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:30,191 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:30,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:39:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:30,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:39:30,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:30,317 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:39:30,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 17:39:30,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:30,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:30,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:30,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187679075] [2021-10-08 17:39:30,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187679075] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:30,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:30,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-08 17:39:30,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202196988] [2021-10-08 17:39:30,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:30,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:30,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:30,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:30,380 INFO L87 Difference]: Start difference. First operand 690 states and 2229 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:30,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:30,504 INFO L93 Difference]: Finished difference Result 436 states and 1383 transitions. [2021-10-08 17:39:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-08 17:39:30,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:39:30,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:30,508 INFO L225 Difference]: With dead ends: 436 [2021-10-08 17:39:30,508 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 17:39:30,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-08 17:39:30,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 17:39:30,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2021-10-08 17:39:30,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 415 states have (on average 3.3325301204819278) internal successors, (1383), 435 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1383 transitions. [2021-10-08 17:39:30,538 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1383 transitions. Word has length 5 [2021-10-08 17:39:30,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:30,538 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1383 transitions. [2021-10-08 17:39:30,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1383 transitions. [2021-10-08 17:39:30,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:39:30,539 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:30,539 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:39:30,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:30,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:30,751 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:30,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:30,753 INFO L82 PathProgramCache]: Analyzing trace with hash 875376572, now seen corresponding path program 1 times [2021-10-08 17:39:30,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:30,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27631381] [2021-10-08 17:39:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:30,754 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:30,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:30,755 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:30,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:39:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:30,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 17:39:30,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:30,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:31,107 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:31,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:31,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:31,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:31,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:31,620 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27631381] [2021-10-08 17:39:31,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27631381] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:31,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:31,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 17:39:31,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761132016] [2021-10-08 17:39:31,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:39:31,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:39:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:39:31,622 INFO L87 Difference]: Start difference. First operand 436 states and 1383 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:32,224 INFO L93 Difference]: Finished difference Result 776 states and 2549 transitions. [2021-10-08 17:39:32,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:39:32,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:39:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:32,232 INFO L225 Difference]: With dead ends: 776 [2021-10-08 17:39:32,232 INFO L226 Difference]: Without dead ends: 776 [2021-10-08 17:39:32,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 451.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:39:32,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-10-08 17:39:32,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 608. [2021-10-08 17:39:32,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 587 states have (on average 3.62350936967632) internal successors, (2127), 607 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:32,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 2127 transitions. [2021-10-08 17:39:32,258 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 2127 transitions. Word has length 5 [2021-10-08 17:39:32,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:32,258 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 2127 transitions. [2021-10-08 17:39:32,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:32,259 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 2127 transitions. [2021-10-08 17:39:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:39:32,259 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:32,260 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:39:32,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:32,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:32,472 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:32,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:32,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1367166335, now seen corresponding path program 1 times [2021-10-08 17:39:32,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:32,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424130578] [2021-10-08 17:39:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:32,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:32,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:32,475 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:32,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:39:32,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:32,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:39:32,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:32,621 INFO L354 Elim1Store]: treesize reduction 84, result has 22.9 percent of original size [2021-10-08 17:39:32,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 30 [2021-10-08 17:39:32,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:32,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:32,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:32,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:32,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424130578] [2021-10-08 17:39:32,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424130578] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:32,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:32,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:39:32,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140425355] [2021-10-08 17:39:32,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:39:32,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:32,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:39:32,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:39:32,695 INFO L87 Difference]: Start difference. First operand 608 states and 2127 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:32,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:32,782 INFO L93 Difference]: Finished difference Result 567 states and 1997 transitions. [2021-10-08 17:39:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 17:39:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:32,789 INFO L225 Difference]: With dead ends: 567 [2021-10-08 17:39:32,789 INFO L226 Difference]: Without dead ends: 567 [2021-10-08 17:39:32,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:39:32,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-10-08 17:39:32,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2021-10-08 17:39:32,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 552 states have (on average 3.6177536231884058) internal successors, (1997), 566 states have internal predecessors, (1997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:32,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1997 transitions. [2021-10-08 17:39:32,810 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1997 transitions. Word has length 6 [2021-10-08 17:39:32,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:32,811 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1997 transitions. [2021-10-08 17:39:32,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:32,811 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1997 transitions. [2021-10-08 17:39:32,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-08 17:39:32,812 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:32,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-08 17:39:32,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:33,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:33,025 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:33,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1367166337, now seen corresponding path program 1 times [2021-10-08 17:39:33,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:33,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138283096] [2021-10-08 17:39:33,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:33,027 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:33,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:33,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:33,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:39:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:33,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:39:33,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:33,372 INFO L354 Elim1Store]: treesize reduction 241, result has 18.6 percent of original size [2021-10-08 17:39:33,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 76 [2021-10-08 17:39:33,391 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 79 treesize of output 77 [2021-10-08 17:39:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:36,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:36,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:36,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:36,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138283096] [2021-10-08 17:39:36,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138283096] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:36,145 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:36,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:39:36,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945522091] [2021-10-08 17:39:36,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:39:36,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:36,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:39:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:36,147 INFO L87 Difference]: Start difference. First operand 567 states and 1997 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:36,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:36,301 INFO L93 Difference]: Finished difference Result 526 states and 1867 transitions. [2021-10-08 17:39:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:39:36,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-08 17:39:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:36,307 INFO L225 Difference]: With dead ends: 526 [2021-10-08 17:39:36,307 INFO L226 Difference]: Without dead ends: 526 [2021-10-08 17:39:36,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2041.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:39:36,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-10-08 17:39:36,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 526. [2021-10-08 17:39:36,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 517 states have (on average 3.611218568665377) internal successors, (1867), 525 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:36,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1867 transitions. [2021-10-08 17:39:36,332 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1867 transitions. Word has length 6 [2021-10-08 17:39:36,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:36,332 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1867 transitions. [2021-10-08 17:39:36,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:36,332 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1867 transitions. [2021-10-08 17:39:36,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:39:36,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:36,335 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-10-08 17:39:36,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:36,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:36,548 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:36,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:36,549 INFO L82 PathProgramCache]: Analyzing trace with hash -576480196, now seen corresponding path program 1 times [2021-10-08 17:39:36,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:36,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484689754] [2021-10-08 17:39:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:36,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:36,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:36,551 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:36,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:39:36,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:36,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:39:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:36,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:36,926 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:36,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:37,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:37,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:37,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:37,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:37,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484689754] [2021-10-08 17:39:37,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484689754] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:37,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:37,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 17:39:37,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066200848] [2021-10-08 17:39:37,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 17:39:37,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 17:39:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:39:37,864 INFO L87 Difference]: Start difference. First operand 526 states and 1867 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:40,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:40,947 INFO L93 Difference]: Finished difference Result 1724 states and 5597 transitions. [2021-10-08 17:39:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:39:40,948 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:39:40,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:40,960 INFO L225 Difference]: With dead ends: 1724 [2021-10-08 17:39:40,960 INFO L226 Difference]: Without dead ends: 1724 [2021-10-08 17:39:40,961 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1458.8ms TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:39:40,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2021-10-08 17:39:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 822. [2021-10-08 17:39:40,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 813 states have (on average 3.4993849938499384) internal successors, (2845), 821 states have internal predecessors, (2845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:41,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 2845 transitions. [2021-10-08 17:39:41,001 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 2845 transitions. Word has length 7 [2021-10-08 17:39:41,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:41,002 INFO L470 AbstractCegarLoop]: Abstraction has 822 states and 2845 transitions. [2021-10-08 17:39:41,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:41,002 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 2845 transitions. [2021-10-08 17:39:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-08 17:39:41,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:41,003 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:41,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 17:39:41,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:41,216 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:41,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:41,217 INFO L82 PathProgramCache]: Analyzing trace with hash -567524029, now seen corresponding path program 1 times [2021-10-08 17:39:41,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:41,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [463281416] [2021-10-08 17:39:41,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:41,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:41,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:41,219 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:41,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:39:41,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:41,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:39:41,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:41,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:41,569 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:41,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:41,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:42,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:42,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [463281416] [2021-10-08 17:39:42,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [463281416] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:42,155 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:42,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 17:39:42,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600007926] [2021-10-08 17:39:42,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:39:42,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:42,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:39:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:39:42,157 INFO L87 Difference]: Start difference. First operand 822 states and 2845 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:42,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:42,826 INFO L93 Difference]: Finished difference Result 1334 states and 4841 transitions. [2021-10-08 17:39:42,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:39:42,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-08 17:39:42,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:42,851 INFO L225 Difference]: With dead ends: 1334 [2021-10-08 17:39:42,851 INFO L226 Difference]: Without dead ends: 1334 [2021-10-08 17:39:42,851 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 414.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:39:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2021-10-08 17:39:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 1216. [2021-10-08 17:39:42,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1216 states, 1207 states have (on average 3.7539353769676884) internal successors, (4531), 1215 states have internal predecessors, (4531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:42,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 4531 transitions. [2021-10-08 17:39:42,917 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 4531 transitions. Word has length 7 [2021-10-08 17:39:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:42,917 INFO L470 AbstractCegarLoop]: Abstraction has 1216 states and 4531 transitions. [2021-10-08 17:39:42,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 4531 transitions. [2021-10-08 17:39:42,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-08 17:39:42,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:42,919 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1] [2021-10-08 17:39:42,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:43,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:43,132 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:43,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:43,133 INFO L82 PathProgramCache]: Analyzing trace with hash 2091032521, now seen corresponding path program 2 times [2021-10-08 17:39:43,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:43,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310773077] [2021-10-08 17:39:43,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:39:43,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:43,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:43,136 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:43,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:39:43,256 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:39:43,257 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:43,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 17:39:43,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:43,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:43,525 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:43,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:43,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:45,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:45,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310773077] [2021-10-08 17:39:45,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310773077] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:45,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:45,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:39:45,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634543394] [2021-10-08 17:39:45,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:39:45,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:45,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:39:45,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:39:45,485 INFO L87 Difference]: Start difference. First operand 1216 states and 4531 transitions. Second operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:53,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:53,536 INFO L93 Difference]: Finished difference Result 11255 states and 42700 transitions. [2021-10-08 17:39:53,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 17:39:53,538 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-08 17:39:53,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:53,608 INFO L225 Difference]: With dead ends: 11255 [2021-10-08 17:39:53,608 INFO L226 Difference]: Without dead ends: 11255 [2021-10-08 17:39:53,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 5699.3ms TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:39:53,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11255 states. [2021-10-08 17:39:53,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11255 to 1224. [2021-10-08 17:39:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1215 states have (on average 3.74238683127572) internal successors, (4547), 1223 states have internal predecessors, (4547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:53,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 4547 transitions. [2021-10-08 17:39:53,861 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 4547 transitions. Word has length 8 [2021-10-08 17:39:53,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:53,862 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 4547 transitions. [2021-10-08 17:39:53,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:53,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 4547 transitions. [2021-10-08 17:39:53,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:39:53,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:53,869 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2021-10-08 17:39:53,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-08 17:39:54,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:54,082 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:54,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:54,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1139045276, now seen corresponding path program 1 times [2021-10-08 17:39:54,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:54,083 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48018007] [2021-10-08 17:39:54,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:54,084 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:54,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:54,085 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:54,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:39:54,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:54,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:39:54,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:54,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:39:54,517 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:39:54,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:39:54,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:39:54,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:39:55,686 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:55,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48018007] [2021-10-08 17:39:55,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48018007] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:55,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:55,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2021-10-08 17:39:55,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864003824] [2021-10-08 17:39:55,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:39:55,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:55,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:39:55,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:39:55,688 INFO L87 Difference]: Start difference. First operand 1224 states and 4547 transitions. Second operand has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:58,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:58,212 INFO L93 Difference]: Finished difference Result 3126 states and 11197 transitions. [2021-10-08 17:39:58,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:39:58,214 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 17:39:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:58,231 INFO L225 Difference]: With dead ends: 3126 [2021-10-08 17:39:58,232 INFO L226 Difference]: Without dead ends: 3126 [2021-10-08 17:39:58,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 2114.4ms TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:39:58,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-10-08 17:39:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 1467. [2021-10-08 17:39:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1458 states have (on average 3.9698216735253773) internal successors, (5788), 1466 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 5788 transitions. [2021-10-08 17:39:58,311 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 5788 transitions. Word has length 9 [2021-10-08 17:39:58,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:58,312 INFO L470 AbstractCegarLoop]: Abstraction has 1467 states and 5788 transitions. [2021-10-08 17:39:58,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:58,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 5788 transitions. [2021-10-08 17:39:58,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-08 17:39:58,313 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:58,313 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:58,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:58,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:58,527 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:58,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:58,528 INFO L82 PathProgramCache]: Analyzing trace with hash 78075313, now seen corresponding path program 1 times [2021-10-08 17:39:58,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:58,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579133643] [2021-10-08 17:39:58,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:58,530 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:58,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:58,531 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:58,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:39:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:58,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 17:39:58,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:58,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:58,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:58,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:58,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:58,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579133643] [2021-10-08 17:39:58,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579133643] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:39:58,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:39:58,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 17:39:58,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122813816] [2021-10-08 17:39:58,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:39:58,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:58,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:39:58,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:39:58,917 INFO L87 Difference]: Start difference. First operand 1467 states and 5788 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:59,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:59,291 INFO L93 Difference]: Finished difference Result 1455 states and 5729 transitions. [2021-10-08 17:39:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 17:39:59,292 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-08 17:39:59,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:59,299 INFO L225 Difference]: With dead ends: 1455 [2021-10-08 17:39:59,299 INFO L226 Difference]: Without dead ends: 1455 [2021-10-08 17:39:59,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 149.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:39:59,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2021-10-08 17:39:59,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1447. [2021-10-08 17:39:59,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1438 states have (on average 3.9791376912378302) internal successors, (5722), 1446 states have internal predecessors, (5722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 5722 transitions. [2021-10-08 17:39:59,351 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 5722 transitions. Word has length 9 [2021-10-08 17:39:59,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:59,352 INFO L470 AbstractCegarLoop]: Abstraction has 1447 states and 5722 transitions. [2021-10-08 17:39:59,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:59,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 5722 transitions. [2021-10-08 17:39:59,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-08 17:39:59,353 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:59,353 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:59,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:59,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:59,567 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:39:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash -881682004, now seen corresponding path program 1 times [2021-10-08 17:39:59,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:59,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208889790] [2021-10-08 17:39:59,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:39:59,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:59,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:59,570 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:59,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:39:59,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:59,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:39:59,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:59,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:00,042 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:00,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:00,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:01,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:01,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:01,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208889790] [2021-10-08 17:40:01,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208889790] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:01,422 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:01,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2021-10-08 17:40:01,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076451567] [2021-10-08 17:40:01,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 17:40:01,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:01,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 17:40:01,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 17:40:01,424 INFO L87 Difference]: Start difference. First operand 1447 states and 5722 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:07,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:07,042 INFO L93 Difference]: Finished difference Result 5233 states and 21725 transitions. [2021-10-08 17:40:07,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:40:07,044 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-08 17:40:07,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:07,078 INFO L225 Difference]: With dead ends: 5233 [2021-10-08 17:40:07,079 INFO L226 Difference]: Without dead ends: 5233 [2021-10-08 17:40:07,080 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 3518.8ms TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:40:07,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5233 states. [2021-10-08 17:40:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5233 to 2999. [2021-10-08 17:40:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2999 states, 2990 states have (on average 4.1578595317725755) internal successors, (12432), 2998 states have internal predecessors, (12432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 12432 transitions. [2021-10-08 17:40:07,299 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 12432 transitions. Word has length 10 [2021-10-08 17:40:07,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:07,299 INFO L470 AbstractCegarLoop]: Abstraction has 2999 states and 12432 transitions. [2021-10-08 17:40:07,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:07,299 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 12432 transitions. [2021-10-08 17:40:07,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-08 17:40:07,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:07,303 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:07,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:07,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:40:07,503 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:40:07,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:07,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1000818295, now seen corresponding path program 2 times [2021-10-08 17:40:07,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:07,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563692643] [2021-10-08 17:40:07,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:40:07,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:07,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:07,507 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:07,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:40:07,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:40:07,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:07,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:40:07,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:07,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:08,096 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:08,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-08 17:40:08,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:10,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:10,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563692643] [2021-10-08 17:40:10,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563692643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:10,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:10,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2021-10-08 17:40:10,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321176008] [2021-10-08 17:40:10,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 17:40:10,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:10,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 17:40:10,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2021-10-08 17:40:10,730 INFO L87 Difference]: Start difference. First operand 2999 states and 12432 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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) [2021-10-08 17:40:23,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:23,974 INFO L93 Difference]: Finished difference Result 6857 states and 25111 transitions. [2021-10-08 17:40:23,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-08 17:40:23,977 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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 12 [2021-10-08 17:40:23,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:24,006 INFO L225 Difference]: With dead ends: 6857 [2021-10-08 17:40:24,007 INFO L226 Difference]: Without dead ends: 6857 [2021-10-08 17:40:24,007 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 5910.8ms TimeCoverageRelationStatistics Valid=222, Invalid=900, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:40:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6857 states. [2021-10-08 17:40:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6857 to 3027. [2021-10-08 17:40:24,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3027 states, 3018 states have (on average 4.081179589131875) internal successors, (12317), 3026 states have internal predecessors, (12317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3027 states to 3027 states and 12317 transitions. [2021-10-08 17:40:24,205 INFO L78 Accepts]: Start accepts. Automaton has 3027 states and 12317 transitions. Word has length 12 [2021-10-08 17:40:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:24,205 INFO L470 AbstractCegarLoop]: Abstraction has 3027 states and 12317 transitions. [2021-10-08 17:40:24,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 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) [2021-10-08 17:40:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3027 states and 12317 transitions. [2021-10-08 17:40:24,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:40:24,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:24,208 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:24,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:24,424 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 [2021-10-08 17:40:24,424 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:40:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:24,425 INFO L82 PathProgramCache]: Analyzing trace with hash -11142031, now seen corresponding path program 2 times [2021-10-08 17:40:24,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:24,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526189214] [2021-10-08 17:40:24,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:40:24,426 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:24,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:24,428 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) [2021-10-08 17:40:24,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:40:24,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:40:24,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:24,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:40:24,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:24,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:24,921 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:24,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:25,252 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:40:25,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:40:26,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:26,262 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526189214] [2021-10-08 17:40:26,262 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526189214] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:40:26,262 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:40:26,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-08 17:40:26,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143619243] [2021-10-08 17:40:26,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-08 17:40:26,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-08 17:40:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-08 17:40:26,264 INFO L87 Difference]: Start difference. First operand 3027 states and 12317 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) [2021-10-08 17:40:26,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:26,997 INFO L93 Difference]: Finished difference Result 4139 states and 17103 transitions. [2021-10-08 17:40:26,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 17:40:26,999 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 13 [2021-10-08 17:40:26,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:27,011 INFO L225 Difference]: With dead ends: 4139 [2021-10-08 17:40:27,011 INFO L226 Difference]: Without dead ends: 4139 [2021-10-08 17:40:27,012 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 480.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-08 17:40:27,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2021-10-08 17:40:27,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 3023. [2021-10-08 17:40:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3023 states, 3014 states have (on average 4.251161247511613) internal successors, (12813), 3022 states have internal predecessors, (12813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3023 states to 3023 states and 12813 transitions. [2021-10-08 17:40:27,165 INFO L78 Accepts]: Start accepts. Automaton has 3023 states and 12813 transitions. Word has length 13 [2021-10-08 17:40:27,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:27,165 INFO L470 AbstractCegarLoop]: Abstraction has 3023 states and 12813 transitions. [2021-10-08 17:40:27,166 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) [2021-10-08 17:40:27,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3023 states and 12813 transitions. [2021-10-08 17:40:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:40:27,168 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:27,168 INFO L512 BasicCegarLoop]: trace histogram [7, 2, 1, 1, 1, 1, 1] [2021-10-08 17:40:27,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:27,376 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 [2021-10-08 17:40:27,376 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:40:27,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:27,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1619292736, now seen corresponding path program 3 times [2021-10-08 17:40:27,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:27,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110904527] [2021-10-08 17:40:27,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:40:27,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:27,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:27,381 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:27,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:40:27,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:40:27,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:27,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:40:27,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:27,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:28,134 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:28,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:28,651 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:40:28,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:29,471 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:40:29,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:29,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110904527] [2021-10-08 17:40:29,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110904527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:29,472 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:29,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-08 17:40:29,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660939273] [2021-10-08 17:40:29,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:40:29,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:29,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:40:29,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:40:29,476 INFO L87 Difference]: Start difference. First operand 3023 states and 12813 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 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) [2021-10-08 17:40:33,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:33,313 INFO L93 Difference]: Finished difference Result 5562 states and 21528 transitions. [2021-10-08 17:40:33,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:40:33,314 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 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 14 [2021-10-08 17:40:33,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:33,362 INFO L225 Difference]: With dead ends: 5562 [2021-10-08 17:40:33,363 INFO L226 Difference]: Without dead ends: 5562 [2021-10-08 17:40:33,363 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2048.8ms TimeCoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2021-10-08 17:40:33,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2021-10-08 17:40:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 3388. [2021-10-08 17:40:33,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3388 states, 3379 states have (on average 4.260432080497188) internal successors, (14396), 3387 states have internal predecessors, (14396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:33,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3388 states to 3388 states and 14396 transitions. [2021-10-08 17:40:33,676 INFO L78 Accepts]: Start accepts. Automaton has 3388 states and 14396 transitions. Word has length 14 [2021-10-08 17:40:33,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:33,676 INFO L470 AbstractCegarLoop]: Abstraction has 3388 states and 14396 transitions. [2021-10-08 17:40:33,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 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) [2021-10-08 17:40:33,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3388 states and 14396 transitions. [2021-10-08 17:40:33,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:40:33,680 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:33,680 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:33,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:33,893 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 [2021-10-08 17:40:33,894 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:40:33,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:33,895 INFO L82 PathProgramCache]: Analyzing trace with hash 290144318, now seen corresponding path program 1 times [2021-10-08 17:40:33,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:33,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908635586] [2021-10-08 17:40:33,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:40:33,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:33,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:33,899 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) [2021-10-08 17:40:33,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:40:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:40:34,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:40:34,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:34,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:34,410 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:34,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:34,867 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:34,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:36,053 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:36,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:36,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908635586] [2021-10-08 17:40:36,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908635586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:36,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:36,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 13 [2021-10-08 17:40:36,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639936983] [2021-10-08 17:40:36,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:40:36,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:36,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:40:36,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:40:36,056 INFO L87 Difference]: Start difference. First operand 3388 states and 14396 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:38,289 INFO L93 Difference]: Finished difference Result 4046 states and 16492 transitions. [2021-10-08 17:40:38,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 17:40:38,290 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 17:40:38,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:38,303 INFO L225 Difference]: With dead ends: 4046 [2021-10-08 17:40:38,303 INFO L226 Difference]: Without dead ends: 4046 [2021-10-08 17:40:38,304 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1437.2ms TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:40:38,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2021-10-08 17:40:38,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3666. [2021-10-08 17:40:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3666 states, 3657 states have (on average 4.2154771670768385) internal successors, (15416), 3665 states have internal predecessors, (15416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:38,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3666 states to 3666 states and 15416 transitions. [2021-10-08 17:40:38,461 INFO L78 Accepts]: Start accepts. Automaton has 3666 states and 15416 transitions. Word has length 14 [2021-10-08 17:40:38,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:38,462 INFO L470 AbstractCegarLoop]: Abstraction has 3666 states and 15416 transitions. [2021-10-08 17:40:38,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:38,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3666 states and 15416 transitions. [2021-10-08 17:40:38,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 17:40:38,466 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:38,466 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:38,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:38,681 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 [2021-10-08 17:40:38,681 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:40:38,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:38,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1115529898, now seen corresponding path program 1 times [2021-10-08 17:40:38,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:38,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276914670] [2021-10-08 17:40:38,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:40:38,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:38,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:38,685 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) [2021-10-08 17:40:38,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:40:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:40:38,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:40:38,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:38,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:39,286 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:39,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:39,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:39,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:40,495 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:40,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:40,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276914670] [2021-10-08 17:40:40,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276914670] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:40,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:40,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 17:40:40,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841107056] [2021-10-08 17:40:40,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-08 17:40:40,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-08 17:40:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-08 17:40:40,497 INFO L87 Difference]: Start difference. First operand 3666 states and 15416 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:43,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:43,041 INFO L93 Difference]: Finished difference Result 3584 states and 14908 transitions. [2021-10-08 17:40:43,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 17:40:43,043 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 17:40:43,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:43,057 INFO L225 Difference]: With dead ends: 3584 [2021-10-08 17:40:43,057 INFO L226 Difference]: Without dead ends: 3584 [2021-10-08 17:40:43,057 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1637.2ms TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2021-10-08 17:40:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3584 states. [2021-10-08 17:40:43,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3584 to 3542. [2021-10-08 17:40:43,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3542 states, 3533 states have (on average 4.199547127087461) internal successors, (14837), 3541 states have internal predecessors, (14837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:43,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3542 states to 3542 states and 14837 transitions. [2021-10-08 17:40:43,244 INFO L78 Accepts]: Start accepts. Automaton has 3542 states and 14837 transitions. Word has length 14 [2021-10-08 17:40:43,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:43,245 INFO L470 AbstractCegarLoop]: Abstraction has 3542 states and 14837 transitions. [2021-10-08 17:40:43,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:43,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3542 states and 14837 transitions. [2021-10-08 17:40:43,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:40:43,249 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:43,249 INFO L512 BasicCegarLoop]: trace histogram [6, 4, 1, 1, 1, 1, 1] [2021-10-08 17:40:43,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:43,463 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 [2021-10-08 17:40:43,464 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:40:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:43,465 INFO L82 PathProgramCache]: Analyzing trace with hash 71109628, now seen corresponding path program 4 times [2021-10-08 17:40:43,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:43,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554185533] [2021-10-08 17:40:43,466 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:40:43,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:43,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:43,468 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) [2021-10-08 17:40:43,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:40:43,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:40:43,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:43,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:40:43,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:40:44,033 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:40:44,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:40:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:44,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:49,242 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:49,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:49,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554185533] [2021-10-08 17:40:49,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554185533] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:49,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:49,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 17:40:49,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134895565] [2021-10-08 17:40:49,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 17:40:49,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:49,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 17:40:49,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-10-08 17:40:49,244 INFO L87 Difference]: Start difference. First operand 3542 states and 14837 transitions. Second operand has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 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) [2021-10-08 17:41:14,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:14,683 INFO L93 Difference]: Finished difference Result 16634 states and 61398 transitions. [2021-10-08 17:41:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:41:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:41:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:14,807 INFO L225 Difference]: With dead ends: 16634 [2021-10-08 17:41:14,807 INFO L226 Difference]: Without dead ends: 16634 [2021-10-08 17:41:14,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 14840.1ms TimeCoverageRelationStatistics Valid=682, Invalid=3100, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:41:14,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16634 states. [2021-10-08 17:41:15,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16634 to 4089. [2021-10-08 17:41:15,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4089 states, 4080 states have (on average 4.2406862745098035) internal successors, (17302), 4088 states have internal predecessors, (17302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:15,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4089 states to 4089 states and 17302 transitions. [2021-10-08 17:41:15,202 INFO L78 Accepts]: Start accepts. Automaton has 4089 states and 17302 transitions. Word has length 15 [2021-10-08 17:41:15,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:15,203 INFO L470 AbstractCegarLoop]: Abstraction has 4089 states and 17302 transitions. [2021-10-08 17:41:15,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 26 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) [2021-10-08 17:41:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4089 states and 17302 transitions. [2021-10-08 17:41:15,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:41:15,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:15,210 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:15,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:15,424 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 [2021-10-08 17:41:15,425 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:41:15,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:15,426 INFO L82 PathProgramCache]: Analyzing trace with hash -765312733, now seen corresponding path program 2 times [2021-10-08 17:41:15,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:15,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387637008] [2021-10-08 17:41:15,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:41:15,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:15,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:15,429 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) [2021-10-08 17:41:15,430 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:41:15,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:41:15,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:15,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:41:15,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:15,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:41:16,076 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:41:16,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:41:16,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:16,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:18,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:18,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387637008] [2021-10-08 17:41:18,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387637008] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:18,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:18,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 17:41:18,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467944924] [2021-10-08 17:41:18,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:41:18,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:41:18,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:41:18,581 INFO L87 Difference]: Start difference. First operand 4089 states and 17302 transitions. Second operand has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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) [2021-10-08 17:41:29,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:29,036 INFO L93 Difference]: Finished difference Result 8711 states and 35857 transitions. [2021-10-08 17:41:29,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-08 17:41:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:41:29,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:29,066 INFO L225 Difference]: With dead ends: 8711 [2021-10-08 17:41:29,067 INFO L226 Difference]: Without dead ends: 8711 [2021-10-08 17:41:29,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 5859.6ms TimeCoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 17:41:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8711 states. [2021-10-08 17:41:29,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8711 to 5913. [2021-10-08 17:41:29,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5913 states, 5904 states have (on average 4.275067750677507) internal successors, (25240), 5912 states have internal predecessors, (25240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5913 states to 5913 states and 25240 transitions. [2021-10-08 17:41:29,341 INFO L78 Accepts]: Start accepts. Automaton has 5913 states and 25240 transitions. Word has length 15 [2021-10-08 17:41:29,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:29,342 INFO L470 AbstractCegarLoop]: Abstraction has 5913 states and 25240 transitions. [2021-10-08 17:41:29,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 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) [2021-10-08 17:41:29,342 INFO L276 IsEmpty]: Start isEmpty. Operand 5913 states and 25240 transitions. [2021-10-08 17:41:29,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:41:29,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:29,347 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:29,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:29,561 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 [2021-10-08 17:41:29,561 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:41:29,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:29,562 INFO L82 PathProgramCache]: Analyzing trace with hash 60072847, now seen corresponding path program 2 times [2021-10-08 17:41:29,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:29,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046526031] [2021-10-08 17:41:29,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:41:29,564 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:29,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:29,565 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) [2021-10-08 17:41:29,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:41:29,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:41:29,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:29,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:41:29,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:29,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:41:30,185 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:41:30,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:41:30,310 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 13 treesize of output 9 [2021-10-08 17:41:30,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:30,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:32,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:32,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:32,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046526031] [2021-10-08 17:41:32,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046526031] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:32,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:32,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:41:32,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209684149] [2021-10-08 17:41:32,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:41:32,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:32,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:41:32,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:41:32,136 INFO L87 Difference]: Start difference. First operand 5913 states and 25240 transitions. Second operand has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) [2021-10-08 17:41:37,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:37,781 INFO L93 Difference]: Finished difference Result 5983 states and 25166 transitions. [2021-10-08 17:41:37,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:41:37,783 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:41:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:37,804 INFO L225 Difference]: With dead ends: 5983 [2021-10-08 17:41:37,804 INFO L226 Difference]: Without dead ends: 5983 [2021-10-08 17:41:37,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 3700.7ms TimeCoverageRelationStatistics Valid=261, Invalid=861, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:41:37,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2021-10-08 17:41:37,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 5769. [2021-10-08 17:41:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5769 states, 5760 states have (on average 4.259027777777778) internal successors, (24532), 5768 states have internal predecessors, (24532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5769 states to 5769 states and 24532 transitions. [2021-10-08 17:41:38,076 INFO L78 Accepts]: Start accepts. Automaton has 5769 states and 24532 transitions. Word has length 15 [2021-10-08 17:41:38,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:38,076 INFO L470 AbstractCegarLoop]: Abstraction has 5769 states and 24532 transitions. [2021-10-08 17:41:38,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 19 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) [2021-10-08 17:41:38,076 INFO L276 IsEmpty]: Start isEmpty. Operand 5769 states and 24532 transitions. [2021-10-08 17:41:38,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:41:38,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:38,081 INFO L512 BasicCegarLoop]: trace histogram [14, 1, 1] [2021-10-08 17:41:38,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:38,296 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 [2021-10-08 17:41:38,297 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:41:38,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:38,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1552089673, now seen corresponding path program 3 times [2021-10-08 17:41:38,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:38,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208722948] [2021-10-08 17:41:38,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:41:38,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:38,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:38,300 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) [2021-10-08 17:41:38,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:41:38,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-08 17:41:38,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:38,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:41:38,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:38,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:41:39,155 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:41:39,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:41:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:40,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:47,515 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:47,515 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208722948] [2021-10-08 17:41:47,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208722948] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:47,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:47,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 17:41:47,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922459891] [2021-10-08 17:41:47,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 17:41:47,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:47,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 17:41:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:41:47,518 INFO L87 Difference]: Start difference. First operand 5769 states and 24532 transitions. Second operand has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:59,986 WARN L207 SmtUtils]: Spent 9.16 s on a formula simplification that was a NOOP. DAG size: 168 [2021-10-08 17:42:08,602 WARN L207 SmtUtils]: Spent 7.59 s on a formula simplification that was a NOOP. DAG size: 157 [2021-10-08 17:42:20,680 WARN L207 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 136 [2021-10-08 17:42:49,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:49,741 INFO L93 Difference]: Finished difference Result 55937 states and 241412 transitions. [2021-10-08 17:42:49,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:42:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:42:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:50,410 INFO L225 Difference]: With dead ends: 55937 [2021-10-08 17:42:50,411 INFO L226 Difference]: Without dead ends: 55937 [2021-10-08 17:42:50,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 54680.2ms TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:42:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55937 states. [2021-10-08 17:42:51,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55937 to 5785. [2021-10-08 17:42:51,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5776 states have (on average 4.252770083102493) internal successors, (24564), 5784 states have internal predecessors, (24564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:51,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 24564 transitions. [2021-10-08 17:42:51,519 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 24564 transitions. Word has length 16 [2021-10-08 17:42:51,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:51,520 INFO L470 AbstractCegarLoop]: Abstraction has 5785 states and 24564 transitions. [2021-10-08 17:42:51,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.032258064516129) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 24564 transitions. [2021-10-08 17:42:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 17:42:51,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:51,536 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:51,567 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:51,750 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 [2021-10-08 17:42:51,751 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:42:51,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:51,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1700642634, now seen corresponding path program 3 times [2021-10-08 17:42:51,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:51,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625823795] [2021-10-08 17:42:51,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:42:51,753 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:51,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:51,755 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) [2021-10-08 17:42:51,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:42:52,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:42:52,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:52,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:42:52,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:52,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:42:52,476 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:42:52,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:42:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:53,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:56,474 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:56,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:56,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625823795] [2021-10-08 17:42:56,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625823795] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:56,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:56,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:42:56,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037957547] [2021-10-08 17:42:56,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:42:56,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:56,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:42:56,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:42:56,477 INFO L87 Difference]: Start difference. First operand 5785 states and 24564 transitions. Second operand has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:30,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:30,645 INFO L93 Difference]: Finished difference Result 11585 states and 48743 transitions. [2021-10-08 17:43:30,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:43:30,647 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 17:43:30,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:30,689 INFO L225 Difference]: With dead ends: 11585 [2021-10-08 17:43:30,689 INFO L226 Difference]: Without dead ends: 11585 [2021-10-08 17:43:30,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 23087.9ms TimeCoverageRelationStatistics Valid=730, Invalid=2350, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:43:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11585 states. [2021-10-08 17:43:30,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11585 to 8075. [2021-10-08 17:43:30,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8075 states, 8066 states have (on average 4.291718323828416) internal successors, (34617), 8074 states have internal predecessors, (34617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8075 states to 8075 states and 34617 transitions. [2021-10-08 17:43:30,969 INFO L78 Accepts]: Start accepts. Automaton has 8075 states and 34617 transitions. Word has length 16 [2021-10-08 17:43:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:30,969 INFO L470 AbstractCegarLoop]: Abstraction has 8075 states and 34617 transitions. [2021-10-08 17:43:30,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:30,969 INFO L276 IsEmpty]: Start isEmpty. Operand 8075 states and 34617 transitions. [2021-10-08 17:43:30,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:43:30,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:30,977 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1] [2021-10-08 17:43:30,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:31,178 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 [2021-10-08 17:43:31,178 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting thread1Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:43:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:31,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1029735260, now seen corresponding path program 5 times [2021-10-08 17:43:31,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:31,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622841375] [2021-10-08 17:43:31,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:43:31,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:31,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:31,183 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) [2021-10-08 17:43:31,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:43:31,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:43:31,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:31,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:43:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:31,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:43:32,184 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:43:32,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:43:32,858 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 17:43:32,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-10-08 17:43:36,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:36,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622841375] [2021-10-08 17:43:36,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622841375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:36,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:36,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:43:36,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744774913] [2021-10-08 17:43:36,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:43:36,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:36,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:43:36,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:43:36,096 INFO L87 Difference]: Start difference. First operand 8075 states and 34617 transitions. Second operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:59,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:59,856 INFO L93 Difference]: Finished difference Result 20429 states and 78825 transitions. [2021-10-08 17:43:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:43:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:43:59,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:00,012 INFO L225 Difference]: With dead ends: 20429 [2021-10-08 17:44:00,012 INFO L226 Difference]: Without dead ends: 20429 [2021-10-08 17:44:00,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 20024.8ms TimeCoverageRelationStatistics Valid=441, Invalid=1281, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 17:44:00,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20429 states. [2021-10-08 17:44:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20429 to 10463. [2021-10-08 17:44:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10463 states, 10454 states have (on average 4.340156877750143) internal successors, (45372), 10462 states have internal predecessors, (45372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:00,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 45372 transitions. [2021-10-08 17:44:00,457 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 45372 transitions. Word has length 17 [2021-10-08 17:44:00,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:00,457 INFO L470 AbstractCegarLoop]: Abstraction has 10463 states and 45372 transitions. [2021-10-08 17:44:00,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:00,457 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 45372 transitions. [2021-10-08 17:44:00,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:44:00,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:00,466 INFO L512 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:00,479 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-08 17:44:00,676 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 [2021-10-08 17:44:00,677 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting thread2Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:44:00,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash -1985423389, now seen corresponding path program 3 times [2021-10-08 17:44:00,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:00,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374487686] [2021-10-08 17:44:00,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:44:00,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:00,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:00,680 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) [2021-10-08 17:44:00,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:44:01,179 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:44:01,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:01,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:44:01,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:01,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:44:01,467 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:44:01,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:44:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:44:02,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-10-08 17:44:03,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:03,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374487686] [2021-10-08 17:44:03,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374487686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:03,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:03,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2021-10-08 17:44:03,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366781834] [2021-10-08 17:44:03,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 17:44:03,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 17:44:03,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-10-08 17:44:03,917 INFO L87 Difference]: Start difference. First operand 10463 states and 45372 transitions. Second operand has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:13,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:13,477 INFO L93 Difference]: Finished difference Result 22321 states and 96652 transitions. [2021-10-08 17:44:13,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:44:13,479 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 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 19 [2021-10-08 17:44:13,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:13,666 INFO L225 Difference]: With dead ends: 22321 [2021-10-08 17:44:13,666 INFO L226 Difference]: Without dead ends: 22321 [2021-10-08 17:44:13,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 5059.1ms TimeCoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:44:13,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22321 states. [2021-10-08 17:44:14,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22321 to 16388. [2021-10-08 17:44:14,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16388 states, 16379 states have (on average 4.438610415776299) internal successors, (72700), 16387 states have internal predecessors, (72700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:14,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16388 states to 16388 states and 72700 transitions. [2021-10-08 17:44:14,206 INFO L78 Accepts]: Start accepts. Automaton has 16388 states and 72700 transitions. Word has length 19 [2021-10-08 17:44:14,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:14,207 INFO L470 AbstractCegarLoop]: Abstraction has 16388 states and 72700 transitions. [2021-10-08 17:44:14,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 17 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:14,207 INFO L276 IsEmpty]: Start isEmpty. Operand 16388 states and 72700 transitions. [2021-10-08 17:44:14,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 17:44:14,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:14,216 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:14,230 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:14,430 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 [2021-10-08 17:44:14,430 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:44:14,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:14,432 INFO L82 PathProgramCache]: Analyzing trace with hash -283121522, now seen corresponding path program 4 times [2021-10-08 17:44:14,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:14,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [212642345] [2021-10-08 17:44:14,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:44:14,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:14,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:14,433 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) [2021-10-08 17:44:14,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:44:14,814 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:44:14,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:14,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 17:44:14,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:14,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:44:15,105 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:44:15,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:44:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:16,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:22,920 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:22,920 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:22,920 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [212642345] [2021-10-08 17:44:22,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [212642345] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:22,920 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:22,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 17:44:22,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982388509] [2021-10-08 17:44:22,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 17:44:22,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:22,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 17:44:22,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:44:22,922 INFO L87 Difference]: Start difference. First operand 16388 states and 72700 transitions. Second operand has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:42,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:42,060 INFO L93 Difference]: Finished difference Result 34581 states and 156092 transitions. [2021-10-08 17:45:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 17:45:42,065 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 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 19 [2021-10-08 17:45:42,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:42,225 INFO L225 Difference]: With dead ends: 34581 [2021-10-08 17:45:42,225 INFO L226 Difference]: Without dead ends: 34581 [2021-10-08 17:45:42,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 55016.8ms TimeCoverageRelationStatistics Valid=1170, Invalid=4530, Unknown=0, NotChecked=0, Total=5700 [2021-10-08 17:45:42,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34581 states. [2021-10-08 17:45:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34581 to 21268. [2021-10-08 17:45:42,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 21259 states have (on average 4.590150054094736) internal successors, (97582), 21267 states have internal predecessors, (97582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:43,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 97582 transitions. [2021-10-08 17:45:43,059 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 97582 transitions. Word has length 19 [2021-10-08 17:45:43,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:43,059 INFO L470 AbstractCegarLoop]: Abstraction has 21268 states and 97582 transitions. [2021-10-08 17:45:43,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 27 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:43,059 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 97582 transitions. [2021-10-08 17:45:43,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 17:45:43,067 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:43,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:43,079 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-08 17:45:43,268 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 [2021-10-08 17:45:43,268 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:45:43,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:43,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1996155827, now seen corresponding path program 1 times [2021-10-08 17:45:43,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:43,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284133670] [2021-10-08 17:45:43,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:45:43,271 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:43,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:43,272 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) [2021-10-08 17:45:43,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:45:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:45:43,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-08 17:45:43,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:43,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:43,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:43,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:43,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284133670] [2021-10-08 17:45:43,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284133670] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:45:43,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:45:43,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:45:43,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895461443] [2021-10-08 17:45:43,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:45:43,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:43,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:45:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:45:43,800 INFO L87 Difference]: Start difference. First operand 21268 states and 97582 transitions. Second operand has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:44,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:44,353 INFO L93 Difference]: Finished difference Result 21537 states and 98361 transitions. [2021-10-08 17:45:44,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:45:44,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2021-10-08 17:45:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:44,449 INFO L225 Difference]: With dead ends: 21537 [2021-10-08 17:45:44,449 INFO L226 Difference]: Without dead ends: 21433 [2021-10-08 17:45:44,449 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:45:44,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21433 states. [2021-10-08 17:45:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21433 to 21193. [2021-10-08 17:45:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21193 states, 21184 states have (on average 4.597573640483383) internal successors, (97395), 21192 states have internal predecessors, (97395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21193 states to 21193 states and 97395 transitions. [2021-10-08 17:45:45,328 INFO L78 Accepts]: Start accepts. Automaton has 21193 states and 97395 transitions. Word has length 20 [2021-10-08 17:45:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:45,328 INFO L470 AbstractCegarLoop]: Abstraction has 21193 states and 97395 transitions. [2021-10-08 17:45:45,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:45,329 INFO L276 IsEmpty]: Start isEmpty. Operand 21193 states and 97395 transitions. [2021-10-08 17:45:45,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 17:45:45,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:45,336 INFO L512 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:45,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:45,539 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 [2021-10-08 17:45:45,540 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:45:45,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:45,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1018429871, now seen corresponding path program 5 times [2021-10-08 17:45:45,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:45,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574069786] [2021-10-08 17:45:45,542 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:45:45,542 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:45,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:45,543 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) [2021-10-08 17:45:45,544 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:45:46,250 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 17:45:46,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:46,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 17:45:46,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:46,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:45:46,562 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:45:46,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:45:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:47,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:56,692 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:56,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:56,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574069786] [2021-10-08 17:45:56,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574069786] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:56,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:56,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30 [2021-10-08 17:45:56,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804974718] [2021-10-08 17:45:56,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-08 17:45:56,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:56,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-08 17:45:56,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2021-10-08 17:45:56,695 INFO L87 Difference]: Start difference. First operand 21193 states and 97395 transitions. Second operand has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:47:16,920 WARN L207 SmtUtils]: Spent 5.20 s on a formula simplification. DAG size of input: 119 DAG size of output: 118 [2021-10-08 17:47:30,131 WARN L207 SmtUtils]: Spent 6.31 s on a formula simplification. DAG size of input: 129 DAG size of output: 128 [2021-10-08 17:47:36,447 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 125 DAG size of output: 124 [2021-10-08 17:47:46,303 WARN L207 SmtUtils]: Spent 5.01 s on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2021-10-08 17:47:54,727 WARN L207 SmtUtils]: Spent 5.02 s on a formula simplification. DAG size of input: 121 DAG size of output: 120 [2021-10-08 17:48:02,464 WARN L207 SmtUtils]: Spent 5.21 s on a formula simplification. DAG size of input: 113 DAG size of output: 112 [2021-10-08 17:48:16,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:48:16,197 INFO L93 Difference]: Finished difference Result 75286 states and 348337 transitions. [2021-10-08 17:48:16,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2021-10-08 17:48:16,202 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 17:48:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:48:17,273 INFO L225 Difference]: With dead ends: 75286 [2021-10-08 17:48:17,273 INFO L226 Difference]: Without dead ends: 75286 [2021-10-08 17:48:17,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2808 ImplicationChecksByTransitivity, 102895.6ms TimeCoverageRelationStatistics Valid=2111, Invalid=8395, Unknown=0, NotChecked=0, Total=10506 [2021-10-08 17:48:17,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75286 states. [2021-10-08 17:48:18,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75286 to 20030. [2021-10-08 17:48:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20030 states, 20021 states have (on average 4.481594325957745) internal successors, (89726), 20029 states have internal predecessors, (89726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:48:18,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20030 states to 20030 states and 89726 transitions. [2021-10-08 17:48:18,972 INFO L78 Accepts]: Start accepts. Automaton has 20030 states and 89726 transitions. Word has length 21 [2021-10-08 17:48:18,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:48:18,972 INFO L470 AbstractCegarLoop]: Abstraction has 20030 states and 89726 transitions. [2021-10-08 17:48:18,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 31 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:48:18,972 INFO L276 IsEmpty]: Start isEmpty. Operand 20030 states and 89726 transitions. [2021-10-08 17:48:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:48:18,984 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:48:18,984 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:48:19,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-08 17:48:19,198 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 [2021-10-08 17:48:19,199 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting thread3Err1REQUIRES_VIOLATION === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:48:19,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:48:19,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1170149912, now seen corresponding path program 6 times [2021-10-08 17:48:19,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:48:19,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357700225] [2021-10-08 17:48:19,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:48:19,201 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:48:19,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:48:19,203 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:48:19,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:48:20,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 17:48:20,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:48:20,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-08 17:48:20,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:48:20,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-08 17:48:20,616 INFO L354 Elim1Store]: treesize reduction 229, result has 22.6 percent of original size [2021-10-08 17:48:20,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 5 case distinctions, treesize of input 23 treesize of output 74 [2021-10-08 17:48:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:48:22,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:48:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:48:31,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:48:31,271 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357700225] [2021-10-08 17:48:31,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357700225] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:48:31,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:48:31,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28 [2021-10-08 17:48:31,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028418311] [2021-10-08 17:48:31,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-08 17:48:31,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:48:31,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-08 17:48:31,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:48:31,273 INFO L87 Difference]: Start difference. First operand 20030 states and 89726 transitions. Second operand has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:49:38,397 WARN L207 SmtUtils]: Spent 5.15 s on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2021-10-08 17:50:12,811 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2021-10-08 17:50:42,564 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification. DAG size of input: 130 DAG size of output: 128 [2021-10-08 17:50:49,735 WARN L207 SmtUtils]: Spent 6.20 s on a formula simplification. DAG size of input: 112 DAG size of output: 111 [2021-10-08 17:51:30,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:30,033 INFO L93 Difference]: Finished difference Result 68105 states and 310152 transitions. [2021-10-08 17:51:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-10-08 17:51:30,035 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 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 22 [2021-10-08 17:51:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:31,284 INFO L225 Difference]: With dead ends: 68105 [2021-10-08 17:51:31,284 INFO L226 Difference]: Without dead ends: 68105 [2021-10-08 17:51:31,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2759 ImplicationChecksByTransitivity, 139621.7ms TimeCoverageRelationStatistics Valid=1955, Invalid=8347, Unknown=0, NotChecked=0, Total=10302 [2021-10-08 17:51:31,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68105 states. [2021-10-08 17:51:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68105 to 29239. [2021-10-08 17:51:32,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29239 states, 29230 states have (on average 4.621861101607937) internal successors, (135097), 29238 states have internal predecessors, (135097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:33,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29239 states to 29239 states and 135097 transitions. [2021-10-08 17:51:33,072 INFO L78 Accepts]: Start accepts. Automaton has 29239 states and 135097 transitions. Word has length 22 [2021-10-08 17:51:33,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:33,073 INFO L470 AbstractCegarLoop]: Abstraction has 29239 states and 135097 transitions. [2021-10-08 17:51:33,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 1.5172413793103448) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 29239 states and 135097 transitions. [2021-10-08 17:51:33,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:51:33,087 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:33,087 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:33,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:33,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:33,301 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:51:33,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:33,302 INFO L82 PathProgramCache]: Analyzing trace with hash -85078044, now seen corresponding path program 1 times [2021-10-08 17:51:33,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:33,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833964625] [2021-10-08 17:51:33,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:51:33,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:33,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:33,304 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:33,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:51:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:51:33,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:51:33,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:34,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:34,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:34,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:34,807 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833964625] [2021-10-08 17:51:34,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833964625] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:34,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:34,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:51:34,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865018559] [2021-10-08 17:51:34,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:51:34,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:34,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:51:34,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:51:34,809 INFO L87 Difference]: Start difference. First operand 29239 states and 135097 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:39,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:39,882 INFO L93 Difference]: Finished difference Result 36199 states and 159903 transitions. [2021-10-08 17:51:39,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:51:39,883 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22 [2021-10-08 17:51:39,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:40,138 INFO L225 Difference]: With dead ends: 36199 [2021-10-08 17:51:40,138 INFO L226 Difference]: Without dead ends: 36199 [2021-10-08 17:51:40,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 2663.0ms TimeCoverageRelationStatistics Valid=573, Invalid=1407, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:51:40,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36199 states. [2021-10-08 17:51:41,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36199 to 30199. [2021-10-08 17:51:41,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30199 states, 30190 states have (on average 4.594037760847963) internal successors, (138694), 30198 states have internal predecessors, (138694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30199 states to 30199 states and 138694 transitions. [2021-10-08 17:51:41,488 INFO L78 Accepts]: Start accepts. Automaton has 30199 states and 138694 transitions. Word has length 22 [2021-10-08 17:51:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:41,489 INFO L470 AbstractCegarLoop]: Abstraction has 30199 states and 138694 transitions. [2021-10-08 17:51:41,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 30199 states and 138694 transitions. [2021-10-08 17:51:41,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:51:41,501 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:41,501 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:41,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 17:51:41,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:41,708 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:51:41,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:41,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1766841512, now seen corresponding path program 2 times [2021-10-08 17:51:41,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:41,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [231328236] [2021-10-08 17:51:41,711 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:51:41,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:41,712 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:41,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:51:42,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:51:42,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:42,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:51:42,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:43,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:43,474 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:43,474 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [231328236] [2021-10-08 17:51:43,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [231328236] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:43,475 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:43,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:51:43,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133299214] [2021-10-08 17:51:43,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:51:43,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:43,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:51:43,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:51:43,477 INFO L87 Difference]: Start difference. First operand 30199 states and 138694 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:49,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:49,344 INFO L93 Difference]: Finished difference Result 46601 states and 205564 transitions. [2021-10-08 17:51:49,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:51:49,345 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22 [2021-10-08 17:51:49,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:49,857 INFO L225 Difference]: With dead ends: 46601 [2021-10-08 17:51:49,857 INFO L226 Difference]: Without dead ends: 46601 [2021-10-08 17:51:49,863 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 2837.2ms TimeCoverageRelationStatistics Valid=550, Invalid=1430, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:51:49,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46601 states. [2021-10-08 17:51:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46601 to 30537. [2021-10-08 17:51:50,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30537 states, 30528 states have (on average 4.596960167714885) internal successors, (140336), 30536 states have internal predecessors, (140336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30537 states to 30537 states and 140336 transitions. [2021-10-08 17:51:51,397 INFO L78 Accepts]: Start accepts. Automaton has 30537 states and 140336 transitions. Word has length 22 [2021-10-08 17:51:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:51,397 INFO L470 AbstractCegarLoop]: Abstraction has 30537 states and 140336 transitions. [2021-10-08 17:51:51,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 30537 states and 140336 transitions. [2021-10-08 17:51:51,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:51:51,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:51,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:51,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-08 17:51:51,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:51:51,629 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:51:51,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:51:51,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1904959248, now seen corresponding path program 3 times [2021-10-08 17:51:51,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:51:51,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192017476] [2021-10-08 17:51:51,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:51:51,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:51:51,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:51:51,632 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:51:51,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:51:52,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:51:52,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:51:52,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:51:52,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:51:52,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:52,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:51:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:51:53,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:51:53,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192017476] [2021-10-08 17:51:53,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192017476] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:51:53,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:51:53,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:51:53,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020232181] [2021-10-08 17:51:53,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:51:53,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:51:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:51:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:51:53,215 INFO L87 Difference]: Start difference. First operand 30537 states and 140336 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:57,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:51:57,949 INFO L93 Difference]: Finished difference Result 41197 states and 182531 transitions. [2021-10-08 17:51:57,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:51:57,950 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22 [2021-10-08 17:51:57,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:51:58,228 INFO L225 Difference]: With dead ends: 41197 [2021-10-08 17:51:58,228 INFO L226 Difference]: Without dead ends: 41197 [2021-10-08 17:51:58,229 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 2254.8ms TimeCoverageRelationStatistics Valid=450, Invalid=1032, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:51:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41197 states. [2021-10-08 17:51:59,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41197 to 30733. [2021-10-08 17:51:59,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30733 states, 30724 states have (on average 4.584917328472855) internal successors, (140867), 30732 states have internal predecessors, (140867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30733 states to 30733 states and 140867 transitions. [2021-10-08 17:51:59,825 INFO L78 Accepts]: Start accepts. Automaton has 30733 states and 140867 transitions. Word has length 22 [2021-10-08 17:51:59,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:51:59,825 INFO L470 AbstractCegarLoop]: Abstraction has 30733 states and 140867 transitions. [2021-10-08 17:51:59,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:51:59,826 INFO L276 IsEmpty]: Start isEmpty. Operand 30733 states and 140867 transitions. [2021-10-08 17:51:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:51:59,855 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:51:59,855 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:51:59,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:00,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:52:00,057 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:52:00,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:00,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1666053874, now seen corresponding path program 4 times [2021-10-08 17:52:00,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:00,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1703201545] [2021-10-08 17:52:00,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:52:00,059 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:00,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:00,064 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:52:00,065 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:52:00,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:52:00,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:00,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:52:00,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:01,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:01,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:01,551 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:01,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1703201545] [2021-10-08 17:52:01,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1703201545] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:01,551 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:01,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:52:01,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721476453] [2021-10-08 17:52:01,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:52:01,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:01,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:52:01,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:52:01,554 INFO L87 Difference]: Start difference. First operand 30733 states and 140867 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:06,174 INFO L93 Difference]: Finished difference Result 55469 states and 248723 transitions. [2021-10-08 17:52:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:52:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22 [2021-10-08 17:52:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:06,823 INFO L225 Difference]: With dead ends: 55469 [2021-10-08 17:52:06,823 INFO L226 Difference]: Without dead ends: 55469 [2021-10-08 17:52:06,824 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 2208.7ms TimeCoverageRelationStatistics Valid=451, Invalid=1031, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:52:06,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55469 states. [2021-10-08 17:52:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55469 to 31201. [2021-10-08 17:52:08,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31201 states, 31192 states have (on average 4.595922031290074) internal successors, (143356), 31200 states have internal predecessors, (143356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:08,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31201 states to 31201 states and 143356 transitions. [2021-10-08 17:52:08,391 INFO L78 Accepts]: Start accepts. Automaton has 31201 states and 143356 transitions. Word has length 22 [2021-10-08 17:52:08,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:08,392 INFO L470 AbstractCegarLoop]: Abstraction has 31201 states and 143356 transitions. [2021-10-08 17:52:08,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:08,392 INFO L276 IsEmpty]: Start isEmpty. Operand 31201 states and 143356 transitions. [2021-10-08 17:52:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:52:08,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:08,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:08,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:08,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:52:08,604 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:52:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:08,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1042887338, now seen corresponding path program 5 times [2021-10-08 17:52:08,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:08,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103537162] [2021-10-08 17:52:08,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:52:08,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:08,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:08,607 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:52:08,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 17:52:09,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:52:09,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:09,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 17:52:09,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:10,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:52:10,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:10,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:10,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:10,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103537162] [2021-10-08 17:52:10,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103537162] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:10,482 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:10,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2021-10-08 17:52:10,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495814464] [2021-10-08 17:52:10,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 17:52:10,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:10,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 17:52:10,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:52:10,485 INFO L87 Difference]: Start difference. First operand 31201 states and 143356 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:15,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:15,672 INFO L93 Difference]: Finished difference Result 44609 states and 198023 transitions. [2021-10-08 17:52:15,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:52:15,674 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 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 22 [2021-10-08 17:52:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:15,919 INFO L225 Difference]: With dead ends: 44609 [2021-10-08 17:52:15,920 INFO L226 Difference]: Without dead ends: 44609 [2021-10-08 17:52:15,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2147.9ms TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:52:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44609 states. [2021-10-08 17:52:17,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44609 to 31347. [2021-10-08 17:52:17,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31347 states, 31338 states have (on average 4.597836492437296) internal successors, (144087), 31346 states have internal predecessors, (144087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:17,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31347 states to 31347 states and 144087 transitions. [2021-10-08 17:52:17,334 INFO L78 Accepts]: Start accepts. Automaton has 31347 states and 144087 transitions. Word has length 22 [2021-10-08 17:52:17,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:17,334 INFO L470 AbstractCegarLoop]: Abstraction has 31347 states and 144087 transitions. [2021-10-08 17:52:17,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:17,334 INFO L276 IsEmpty]: Start isEmpty. Operand 31347 states and 144087 transitions. [2021-10-08 17:52:17,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:52:17,346 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:17,346 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:17,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:17,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:52:17,547 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:52:17,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:17,548 INFO L82 PathProgramCache]: Analyzing trace with hash 633698020, now seen corresponding path program 6 times [2021-10-08 17:52:17,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:17,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [887807185] [2021-10-08 17:52:17,549 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:52:17,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:17,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:17,551 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:52:17,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 17:52:18,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:52:18,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:52:18,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:52:18,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:19,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:19,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:19,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:19,381 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:19,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [887807185] [2021-10-08 17:52:19,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [887807185] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:19,382 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:19,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:52:19,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993666210] [2021-10-08 17:52:19,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:52:19,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:52:19,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:52:19,384 INFO L87 Difference]: Start difference. First operand 31347 states and 144087 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:24,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:52:24,242 INFO L93 Difference]: Finished difference Result 41321 states and 185398 transitions. [2021-10-08 17:52:24,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:52:24,243 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 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 22 [2021-10-08 17:52:24,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:52:24,467 INFO L225 Difference]: With dead ends: 41321 [2021-10-08 17:52:24,467 INFO L226 Difference]: Without dead ends: 41321 [2021-10-08 17:52:24,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2372.7ms TimeCoverageRelationStatistics Valid=568, Invalid=1412, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 17:52:24,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41321 states. [2021-10-08 17:52:25,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41321 to 31403. [2021-10-08 17:52:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31403 states, 31394 states have (on average 4.594954449894884) internal successors, (144254), 31402 states have internal predecessors, (144254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:25,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31403 states to 31403 states and 144254 transitions. [2021-10-08 17:52:25,948 INFO L78 Accepts]: Start accepts. Automaton has 31403 states and 144254 transitions. Word has length 22 [2021-10-08 17:52:25,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:52:25,948 INFO L470 AbstractCegarLoop]: Abstraction has 31403 states and 144254 transitions. [2021-10-08 17:52:25,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:52:25,949 INFO L276 IsEmpty]: Start isEmpty. Operand 31403 states and 144254 transitions. [2021-10-08 17:52:25,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-08 17:52:25,960 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:52:25,960 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:52:25,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:26,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:52:26,161 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATION, thread1Err1REQUIRES_VIOLATION, thread2Err0REQUIRES_VIOLATION, thread2Err1REQUIRES_VIOLATION (and 27 more)] === [2021-10-08 17:52:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:52:26,163 INFO L82 PathProgramCache]: Analyzing trace with hash -511867236, now seen corresponding path program 7 times [2021-10-08 17:52:26,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:52:26,164 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395381036] [2021-10-08 17:52:26,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:52:26,164 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:52:26,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:52:26,165 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:52:26,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 17:52:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:52:26,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 17:52:26,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:52:27,228 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:27,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:52:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 17:52:27,731 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:52:27,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395381036] [2021-10-08 17:52:27,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395381036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:52:27,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:52:27,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 16 [2021-10-08 17:52:27,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533209172] [2021-10-08 17:52:27,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:52:27,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:52:27,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:52:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:52:27,734 INFO L87 Difference]: Start difference. First operand 31403 states and 144254 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-08 17:52:32,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 17:52:32,873 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:52:32,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 17:52:32,902 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 [2021-10-08 17:52:32,903 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:52:33,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:52:33,076 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). [2021-10-08 17:52:33,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 17:52:33,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 17:52:33,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 17:52:33,080 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:52:33,081 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-08 17:52:33,082 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0REQUIRES_VIOLATION [2021-10-08 17:52:33,083 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1REQUIRES_VIOLATION [2021-10-08 17:52:33,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0REQUIRES_VIOLATION [2021-10-08 17:52:33,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1REQUIRES_VIOLATION [2021-10-08 17:52:33,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0REQUIRES_VIOLATION [2021-10-08 17:52:33,084 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1REQUIRES_VIOLATION [2021-10-08 17:52:33,093 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:52:33,093 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:52:33,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:52:33 BasicIcfg [2021-10-08 17:52:33,096 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:52:33,097 INFO L168 Benchmark]: Toolchain (without parser) took 823498.56 ms. Allocated memory was 161.5 MB in the beginning and 5.8 GB in the end (delta: 5.6 GB). Free memory was 136.7 MB in the beginning and 3.9 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.9 GB. Max. memory is 8.0 GB. [2021-10-08 17:52:33,097 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 161.5 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:52:33,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 533.54 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 123.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-10-08 17:52:33,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.61 ms. Allocated memory is still 161.5 MB. Free memory was 123.1 MB in the beginning and 121.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:52:33,099 INFO L168 Benchmark]: Boogie Preprocessor took 79.29 ms. Allocated memory is still 161.5 MB. Free memory was 121.1 MB in the beginning and 119.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:52:33,099 INFO L168 Benchmark]: RCFGBuilder took 872.14 ms. Allocated memory is still 161.5 MB. Free memory was 119.2 MB in the beginning and 131.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:52:33,099 INFO L168 Benchmark]: TraceAbstraction took 821936.86 ms. Allocated memory was 161.5 MB in the beginning and 5.8 GB in the end (delta: 5.6 GB). Free memory was 130.6 MB in the beginning and 3.9 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.9 GB. Max. memory is 8.0 GB. [2021-10-08 17:52:33,104 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 161.5 MB. Free memory is still 133.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 533.54 ms. Allocated memory is still 161.5 MB. Free memory was 136.4 MB in the beginning and 123.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.61 ms. Allocated memory is still 161.5 MB. Free memory was 123.1 MB in the beginning and 121.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.29 ms. Allocated memory is still 161.5 MB. Free memory was 121.1 MB in the beginning and 119.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 872.14 ms. Allocated memory is still 161.5 MB. Free memory was 119.2 MB in the beginning and 131.1 MB in the end (delta: -11.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 821936.86 ms. Allocated memory was 161.5 MB in the beginning and 5.8 GB in the end (delta: 5.6 GB). Free memory was 130.6 MB in the beginning and 3.9 GB in the end (delta: -3.8 GB). Peak memory consumption was 1.9 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24520.7ms, 218 PlacesBefore, 58 PlacesAfterwards, 226 TransitionsBefore, 53 TransitionsAfterwards, 10608 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 107 ConcurrentSequentialCompositions, 11 TrivialYvCompositions, 33 ConcurrentYvCompositions, 13 ChoiceCompositions, 250 TotalNumberOfCompositions, 11981 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11062, positive: 10998, positive conditional: 0, positive unconditional: 10998, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7506, positive: 7478, positive conditional: 0, positive unconditional: 7478, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7506, positive: 7475, positive conditional: 0, positive unconditional: 7475, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 1169, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 1167, negative conditional: 0, negative unconditional: 1167, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11062, positive: 3520, positive conditional: 0, positive unconditional: 3520, negative: 36, negative conditional: 0, negative unconditional: 36, unknown: 7506, unknown conditional: 0, unknown unconditional: 7506] , Statistics on independence cache: Total cache size (in pairs): 196, Positive cache size: 190, Positive conditional cache size: 0, Positive unconditional cache size: 190, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 48]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 84]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 83]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (31403states) and FLOYD_HOARE automaton (currently 35 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1871 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 305 locations, 31 error locations. Started 1 CEGAR loops. OverallTime: 821717.6ms, OverallIterations: 40, TraceHistogramMax: 14, EmptinessCheckTime: 239.6ms, AutomataDifference: 658504.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 24667.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3333 SDtfs, 28892 SDslu, 26622 SDs, 0 SdLazy, 35919 SolverSat, 1579 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 202660.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1543 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 1077 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12113 ImplicationChecksByTransitivity, 470993.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31403occurred in iteration=39, InterpolantAutomatonStates: 802, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19733.5ms AutomataMinimizationTime, 39 MinimizatonAttempts, 300505 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 494.6ms SsaConstructionTime, 4886.2ms SatisfiabilityAnalysisTime, 96361.1ms InterpolantComputationTime, 508 NumberOfCodeBlocks, 501 NumberOfCodeBlocksAsserted, 73 NumberOfCheckSat, 936 ConstructedInterpolants, 109 QuantifiedInterpolants, 18192 SizeOfPredicates, 465 NumberOfNonLiveVariables, 4143 ConjunctsInSsa, 640 ConjunctsInUnsatCore, 80 InterpolantComputations, 28 PerfectInterpolantSequences, 218/882 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