/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/parallel-ticket-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c503be2 [2021-10-13 20:40:27,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 20:40:27,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 20:40:27,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-13 20:40:27,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 20:40:27,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 20:40:27,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 20:40:27,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 20:40:27,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 20:40:27,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 20:40:27,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 20:40:27,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 20:40:27,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 20:40:27,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 20:40:27,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 20:40:27,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 20:40:27,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-13 20:40:28,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 20:40:28,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 20:40:28,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 20:40:28,019 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-13 20:40:28,074 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 20:40:28,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 20:40:28,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 20:40:28,076 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 20:40:28,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 20:40:28,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 20:40:28,081 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 20:40:28,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 20:40:28,082 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 20:40:28,082 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-13 20:40:28,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 20:40:28,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 20:40:28,083 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 20:40:28,084 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-13 20:40:28,084 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-13 20:40:28,084 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-13 20:40:28,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 20:40:28,085 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 20:40:28,085 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 20:40:28,085 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 20:40:28,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 20:40:28,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 20:40:28,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 20:40:28,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 20:40:28,086 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 20:40:28,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:40:28,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 20:40:28,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 20:40:28,087 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 20:40:28,087 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 20:40:28,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 20:40:28,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 20:40:28,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-13 20:40:28,538 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 20:40:28,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 20:40:28,572 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 20:40:28,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 20:40:28,575 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 20:40:28,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-10-13 20:40:28,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56fcceb91/fb58c58ef78b41fd91d4105fdec78801/FLAG8124aa38b [2021-10-13 20:40:29,398 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 20:40:29,399 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-5.wvr.c [2021-10-13 20:40:29,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56fcceb91/fb58c58ef78b41fd91d4105fdec78801/FLAG8124aa38b [2021-10-13 20:40:29,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56fcceb91/fb58c58ef78b41fd91d4105fdec78801 [2021-10-13 20:40:29,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 20:40:29,742 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-13 20:40:29,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 20:40:29,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 20:40:29,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 20:40:29,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:40:29" (1/1) ... [2021-10-13 20:40:29,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60485761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:29, skipping insertion in model container [2021-10-13 20:40:29,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:40:29" (1/1) ... [2021-10-13 20:40:29,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 20:40:29,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 20:40:30,010 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/parallel-ticket-5.wvr.c[3067,3080] [2021-10-13 20:40:30,015 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:40:30,030 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 20:40:30,071 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/parallel-ticket-5.wvr.c[3067,3080] [2021-10-13 20:40:30,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 20:40:30,093 INFO L208 MainTranslator]: Completed translation [2021-10-13 20:40:30,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30 WrapperNode [2021-10-13 20:40:30,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 20:40:30,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 20:40:30,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 20:40:30,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 20:40:30,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 20:40:30,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 20:40:30,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 20:40:30,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 20:40:30,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 20:40:30,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 20:40:30,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 20:40:30,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 20:40:30,209 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (1/1) ... [2021-10-13 20:40:30,218 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 20:40:30,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-13 20:40:30,267 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) [2021-10-13 20:40:30,292 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 [2021-10-13 20:40:30,339 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-13 20:40:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-13 20:40:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-13 20:40:30,340 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-13 20:40:30,340 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-13 20:40:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-13 20:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 20:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-10-13 20:40:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-10-13 20:40:30,341 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-10-13 20:40:30,341 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-10-13 20:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 20:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-13 20:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-13 20:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-13 20:40:30,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 20:40:30,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 20:40:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-13 20:40:30,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-13 20:40:30,345 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-13 20:40:31,189 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 20:40:31,190 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-13 20:40:31,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:40:31 BoogieIcfgContainer [2021-10-13 20:40:31,196 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 20:40:31,198 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 20:40:31,198 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 20:40:31,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 20:40:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:40:29" (1/3) ... [2021-10-13 20:40:31,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1164e76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:40:31, skipping insertion in model container [2021-10-13 20:40:31,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:40:30" (2/3) ... [2021-10-13 20:40:31,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1164e76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:40:31, skipping insertion in model container [2021-10-13 20:40:31,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:40:31" (3/3) ... [2021-10-13 20:40:31,207 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-5.wvr.c [2021-10-13 20:40:31,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 20:40:31,214 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2021-10-13 20:40:31,214 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-13 20:40:31,278 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,279 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,280 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,280 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,281 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,281 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,281 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,281 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,282 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,282 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,282 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,282 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,283 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,283 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,287 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,288 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,288 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,289 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,289 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,289 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,289 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,290 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,290 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,290 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,291 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,291 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,295 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,296 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,297 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,297 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,297 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,298 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,298 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,298 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,299 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,299 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,301 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,301 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,303 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,303 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,303 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,303 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,304 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,305 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,305 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,307 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,307 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,308 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,308 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,308 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,309 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,309 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,309 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,309 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,309 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,310 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,312 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,313 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,313 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,314 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,314 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,315 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,316 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,317 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,320 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,325 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,325 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,326 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,326 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,326 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,327 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,327 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,329 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,329 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,329 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,329 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,330 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,331 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,331 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,331 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,331 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,332 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,332 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,332 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,332 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,333 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,333 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,333 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,334 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,339 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,340 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,341 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,346 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,346 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,347 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,347 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,347 WARN L313 ript$VariableManager]: TermVariabe thread4Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,347 WARN L313 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork1_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,353 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,354 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,354 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,362 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,365 WARN L313 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork3_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,365 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,365 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,366 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,366 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,369 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,369 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,370 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,370 WARN L313 ript$VariableManager]: TermVariabe thread5Thread1of1ForFork4_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,370 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,370 WARN L313 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork4_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-13 20:40:31,393 INFO L148 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-10-13 20:40:31,479 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 20:40:31,492 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 [2021-10-13 20:40:31,492 INFO L340 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2021-10-13 20:40:31,524 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-13 20:40:31,538 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 208 transitions, 456 flow [2021-10-13 20:40:31,547 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 208 transitions, 456 flow [2021-10-13 20:40:31,550 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 217 places, 208 transitions, 456 flow [2021-10-13 20:40:31,711 INFO L129 PetriNetUnfolder]: 7/203 cut-off events. [2021-10-13 20:40:31,711 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-10-13 20:40:31,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 203 events. 7/203 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 262 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 146. Up to 2 conditions per place. [2021-10-13 20:40:31,733 INFO L116 LiptonReduction]: Number of co-enabled transitions 7588 [2021-10-13 20:41:00,288 INFO L131 LiptonReduction]: Checked pairs total: 26073 [2021-10-13 20:41:00,288 INFO L133 LiptonReduction]: Total number of compositions: 201 [2021-10-13 20:41:00,298 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 78 transitions, 196 flow [2021-10-13 20:41:03,601 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 49763 states, 49741 states have (on average 5.353068896885869) internal successors, (266267), 49762 states have internal predecessors, (266267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:03,875 INFO L276 IsEmpty]: Start isEmpty. Operand has 49763 states, 49741 states have (on average 5.353068896885869) internal successors, (266267), 49762 states have internal predecessors, (266267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:03,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-13 20:41:03,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:03,891 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-13 20:41:03,892 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:41:03,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:03,908 INFO L82 PathProgramCache]: Analyzing trace with hash 776, now seen corresponding path program 1 times [2021-10-13 20:41:03,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:03,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1814419659] [2021-10-13 20:41:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:41:03,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:03,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:03,954 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) [2021-10-13 20:41:03,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 20:41:04,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:41:04,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 20:41:04,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:04,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:04,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:04,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:04,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:04,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1814419659] [2021-10-13 20:41:04,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1814419659] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:41:04,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:41:04,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-13 20:41:04,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927607357] [2021-10-13 20:41:04,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 20:41:04,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:04,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 20:41:04,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:41:04,234 INFO L87 Difference]: Start difference. First operand has 49763 states, 49741 states have (on average 5.353068896885869) internal successors, (266267), 49762 states have internal predecessors, (266267), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:06,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:06,247 INFO L93 Difference]: Finished difference Result 49760 states and 235608 transitions. [2021-10-13 20:41:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 20:41:06,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2021-10-13 20:41:06,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:07,955 INFO L225 Difference]: With dead ends: 49760 [2021-10-13 20:41:07,955 INFO L226 Difference]: Without dead ends: 49760 [2021-10-13 20:41:07,957 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 20:41:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49760 states. [2021-10-13 20:41:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49760 to 49760. [2021-10-13 20:41:12,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49760 states, 49741 states have (on average 4.73669608572405) internal successors, (235608), 49759 states have internal predecessors, (235608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49760 states to 49760 states and 235608 transitions. [2021-10-13 20:41:13,212 INFO L78 Accepts]: Start accepts. Automaton has 49760 states and 235608 transitions. Word has length 1 [2021-10-13 20:41:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:13,213 INFO L470 AbstractCegarLoop]: Abstraction has 49760 states and 235608 transitions. [2021-10-13 20:41:13,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 49760 states and 235608 transitions. [2021-10-13 20:41:13,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:41:13,214 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:13,214 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:41:13,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:13,427 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 [2021-10-13 20:41:13,428 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:41:13,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:13,429 INFO L82 PathProgramCache]: Analyzing trace with hash 764033, now seen corresponding path program 1 times [2021-10-13 20:41:13,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:13,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689084155] [2021-10-13 20:41:13,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:41:13,433 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:13,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:13,435 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) [2021-10-13 20:41:13,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 20:41:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:41:13,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 20:41:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:14,252 INFO L354 Elim1Store]: treesize reduction 361, result has 13.0 percent of original size [2021-10-13 20:41:14,254 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 6 case distinctions, treesize of input 75 treesize of output 109 [2021-10-13 20:41:14,292 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-10-13 20:41:14,293 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 861 treesize of output 829 [2021-10-13 20:41:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:17,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:17,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:17,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689084155] [2021-10-13 20:41:17,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689084155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:41:17,097 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:41:17,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:41:17,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36008826] [2021-10-13 20:41:17,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:41:17,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:17,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:41:17,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:17,101 INFO L87 Difference]: Start difference. First operand 49760 states and 235608 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:18,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:18,432 INFO L93 Difference]: Finished difference Result 48457 states and 229979 transitions. [2021-10-13 20:41:18,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:41:18,435 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 20:41:18,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:19,040 INFO L225 Difference]: With dead ends: 48457 [2021-10-13 20:41:19,041 INFO L226 Difference]: Without dead ends: 48457 [2021-10-13 20:41:19,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48457 states. [2021-10-13 20:41:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48457 to 48457. [2021-10-13 20:41:22,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48457 states, 48440 states have (on average 4.747708505367465) internal successors, (229979), 48456 states have internal predecessors, (229979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:22,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48457 states to 48457 states and 229979 transitions. [2021-10-13 20:41:22,980 INFO L78 Accepts]: Start accepts. Automaton has 48457 states and 229979 transitions. Word has length 3 [2021-10-13 20:41:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:22,989 INFO L470 AbstractCegarLoop]: Abstraction has 48457 states and 229979 transitions. [2021-10-13 20:41:22,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 48457 states and 229979 transitions. [2021-10-13 20:41:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 20:41:22,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:22,990 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 20:41:23,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 20:41:23,202 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 [2021-10-13 20:41:23,203 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:41:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:23,205 INFO L82 PathProgramCache]: Analyzing trace with hash 764035, now seen corresponding path program 1 times [2021-10-13 20:41:23,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:23,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711275750] [2021-10-13 20:41:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:41:23,207 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:23,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:23,208 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) [2021-10-13 20:41:23,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 20:41:23,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:41:23,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:41:23,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:23,655 INFO L354 Elim1Store]: treesize reduction 507, result has 13.0 percent of original size [2021-10-13 20:41:23,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 10 case distinctions, treesize of input 198 treesize of output 243 [2021-10-13 20:41:35,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:35,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:35,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:35,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:35,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711275750] [2021-10-13 20:41:35,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711275750] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:41:35,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:41:35,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:41:35,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400936985] [2021-10-13 20:41:35,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:41:35,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:35,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:41:35,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:35,159 INFO L87 Difference]: Start difference. First operand 48457 states and 229979 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:36,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:36,105 INFO L93 Difference]: Finished difference Result 47154 states and 224350 transitions. [2021-10-13 20:41:36,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:41:36,106 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-13 20:41:36,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:36,600 INFO L225 Difference]: With dead ends: 47154 [2021-10-13 20:41:36,600 INFO L226 Difference]: Without dead ends: 47154 [2021-10-13 20:41:36,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:36,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47154 states. [2021-10-13 20:41:39,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47154 to 47154. [2021-10-13 20:41:39,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47154 states, 47139 states have (on average 4.759328793567959) internal successors, (224350), 47153 states have internal predecessors, (224350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:40,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47154 states to 47154 states and 224350 transitions. [2021-10-13 20:41:40,413 INFO L78 Accepts]: Start accepts. Automaton has 47154 states and 224350 transitions. Word has length 3 [2021-10-13 20:41:40,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:40,413 INFO L470 AbstractCegarLoop]: Abstraction has 47154 states and 224350 transitions. [2021-10-13 20:41:40,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:40,414 INFO L276 IsEmpty]: Start isEmpty. Operand 47154 states and 224350 transitions. [2021-10-13 20:41:40,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:41:40,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:40,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:41:40,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:40,626 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 [2021-10-13 20:41:40,627 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:41:40,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:40,629 INFO L82 PathProgramCache]: Analyzing trace with hash 734253897, now seen corresponding path program 1 times [2021-10-13 20:41:40,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:40,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331997530] [2021-10-13 20:41:40,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:41:40,630 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:40,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:40,631 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) [2021-10-13 20:41:40,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 20:41:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:41:40,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 20:41:40,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:41,049 INFO L354 Elim1Store]: treesize reduction 355, result has 14.5 percent of original size [2021-10-13 20:41:41,051 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 6 case distinctions, treesize of input 50 treesize of output 90 [2021-10-13 20:41:41,060 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 155 treesize of output 151 [2021-10-13 20:41:42,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:42,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:42,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:42,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:42,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331997530] [2021-10-13 20:41:42,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331997530] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:41:42,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:41:42,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:41:42,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024851131] [2021-10-13 20:41:42,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:41:42,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:42,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:41:42,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:42,425 INFO L87 Difference]: Start difference. First operand 47154 states and 224350 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:43,478 INFO L93 Difference]: Finished difference Result 46896 states and 223481 transitions. [2021-10-13 20:41:43,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:41:43,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 20:41:43,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:41:43,877 INFO L225 Difference]: With dead ends: 46896 [2021-10-13 20:41:43,877 INFO L226 Difference]: Without dead ends: 46896 [2021-10-13 20:41:43,878 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46896 states. [2021-10-13 20:41:46,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46896 to 46896. [2021-10-13 20:41:46,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46896 states, 46883 states have (on average 4.7667811360194525) internal successors, (223481), 46895 states have internal predecessors, (223481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:47,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46896 states to 46896 states and 223481 transitions. [2021-10-13 20:41:47,038 INFO L78 Accepts]: Start accepts. Automaton has 46896 states and 223481 transitions. Word has length 5 [2021-10-13 20:41:47,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:41:47,039 INFO L470 AbstractCegarLoop]: Abstraction has 46896 states and 223481 transitions. [2021-10-13 20:41:47,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:47,040 INFO L276 IsEmpty]: Start isEmpty. Operand 46896 states and 223481 transitions. [2021-10-13 20:41:47,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 20:41:47,040 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:41:47,040 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 20:41:47,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 20:41:47,249 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 [2021-10-13 20:41:47,250 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:41:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:41:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash 734253899, now seen corresponding path program 1 times [2021-10-13 20:41:47,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:41:47,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745651345] [2021-10-13 20:41:47,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:41:47,253 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:41:47,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:41:47,254 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) [2021-10-13 20:41:47,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-13 20:41:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:41:47,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:41:47,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:41:47,661 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:41:47,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 8 case distinctions, treesize of input 172 treesize of output 217 [2021-10-13 20:41:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:59,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:41:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:41:59,398 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:41:59,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745651345] [2021-10-13 20:41:59,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745651345] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:41:59,399 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:41:59,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:41:59,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684170157] [2021-10-13 20:41:59,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:41:59,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:41:59,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:41:59,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:41:59,403 INFO L87 Difference]: Start difference. First operand 46896 states and 223481 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:41:59,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:41:59,947 INFO L93 Difference]: Finished difference Result 46638 states and 222612 transitions. [2021-10-13 20:41:59,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:41:59,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-13 20:41:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:00,728 INFO L225 Difference]: With dead ends: 46638 [2021-10-13 20:42:00,728 INFO L226 Difference]: Without dead ends: 46638 [2021-10-13 20:42:00,728 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:42:00,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46638 states. [2021-10-13 20:42:02,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46638 to 46638. [2021-10-13 20:42:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46638 states, 46627 states have (on average 4.774315310871383) internal successors, (222612), 46637 states have internal predecessors, (222612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:03,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46638 states to 46638 states and 222612 transitions. [2021-10-13 20:42:03,229 INFO L78 Accepts]: Start accepts. Automaton has 46638 states and 222612 transitions. Word has length 5 [2021-10-13 20:42:03,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:03,230 INFO L470 AbstractCegarLoop]: Abstraction has 46638 states and 222612 transitions. [2021-10-13 20:42:03,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:03,230 INFO L276 IsEmpty]: Start isEmpty. Operand 46638 states and 222612 transitions. [2021-10-13 20:42:03,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:42:03,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:03,231 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:03,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:03,431 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 [2021-10-13 20:42:03,432 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:03,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1243376839, now seen corresponding path program 1 times [2021-10-13 20:42:03,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:03,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [952224460] [2021-10-13 20:42:03,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:03,436 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:03,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:03,437 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) [2021-10-13 20:42:03,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-13 20:42:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:03,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:42:03,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:03,830 INFO L354 Elim1Store]: treesize reduction 349, result has 15.9 percent of original size [2021-10-13 20:42:03,830 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 6 case distinctions, treesize of input 24 treesize of output 71 [2021-10-13 20:42:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:03,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:04,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:04,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:04,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [952224460] [2021-10-13 20:42:04,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [952224460] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:04,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:04,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:42:04,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488456304] [2021-10-13 20:42:04,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:42:04,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:42:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:42:04,026 INFO L87 Difference]: Start difference. First operand 46638 states and 222612 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:05,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:05,079 INFO L93 Difference]: Finished difference Result 46350 states and 221628 transitions. [2021-10-13 20:42:05,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:42:05,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 20:42:05,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:05,395 INFO L225 Difference]: With dead ends: 46350 [2021-10-13 20:42:05,395 INFO L226 Difference]: Without dead ends: 46350 [2021-10-13 20:42:05,396 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:42:06,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46350 states. [2021-10-13 20:42:07,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46350 to 46350. [2021-10-13 20:42:07,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46350 states, 46341 states have (on average 4.78254677283615) internal successors, (221628), 46349 states have internal predecessors, (221628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46350 states to 46350 states and 221628 transitions. [2021-10-13 20:42:08,400 INFO L78 Accepts]: Start accepts. Automaton has 46350 states and 221628 transitions. Word has length 7 [2021-10-13 20:42:08,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:08,401 INFO L470 AbstractCegarLoop]: Abstraction has 46350 states and 221628 transitions. [2021-10-13 20:42:08,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:08,401 INFO L276 IsEmpty]: Start isEmpty. Operand 46350 states and 221628 transitions. [2021-10-13 20:42:08,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 20:42:08,403 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:08,403 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:08,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:08,616 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 [2021-10-13 20:42:08,617 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:08,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:08,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1243376840, now seen corresponding path program 1 times [2021-10-13 20:42:08,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:08,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308976154] [2021-10-13 20:42:08,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:08,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:08,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:08,621 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) [2021-10-13 20:42:08,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-13 20:42:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:08,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:42:08,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:09,018 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:42:09,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 20:42:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:09,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:09,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:09,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:09,768 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308976154] [2021-10-13 20:42:09,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308976154] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:09,768 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:09,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:42:09,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709285069] [2021-10-13 20:42:09,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:42:09,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:09,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:42:09,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:42:09,770 INFO L87 Difference]: Start difference. First operand 46350 states and 221628 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:10,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:10,918 INFO L93 Difference]: Finished difference Result 46062 states and 220644 transitions. [2021-10-13 20:42:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:42:10,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 [2021-10-13 20:42:10,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:11,264 INFO L225 Difference]: With dead ends: 46062 [2021-10-13 20:42:11,264 INFO L226 Difference]: Without dead ends: 46062 [2021-10-13 20:42:11,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:42:11,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46062 states. [2021-10-13 20:42:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46062 to 46062. [2021-10-13 20:42:13,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46062 states, 46055 states have (on average 4.790880469004451) internal successors, (220644), 46061 states have internal predecessors, (220644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:13,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46062 states to 46062 states and 220644 transitions. [2021-10-13 20:42:13,626 INFO L78 Accepts]: Start accepts. Automaton has 46062 states and 220644 transitions. Word has length 7 [2021-10-13 20:42:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:13,626 INFO L470 AbstractCegarLoop]: Abstraction has 46062 states and 220644 transitions. [2021-10-13 20:42:13,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:13,626 INFO L276 IsEmpty]: Start isEmpty. Operand 46062 states and 220644 transitions. [2021-10-13 20:42:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 20:42:13,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:13,628 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:13,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:13,828 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 [2021-10-13 20:42:13,829 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:13,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:13,831 INFO L82 PathProgramCache]: Analyzing trace with hash 884250326, now seen corresponding path program 1 times [2021-10-13 20:42:13,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:13,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990207339] [2021-10-13 20:42:13,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:13,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:13,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:13,833 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) [2021-10-13 20:42:13,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-13 20:42:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:13,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-13 20:42:13,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:14,774 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:42:14,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 20:42:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:15,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:15,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:15,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:15,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990207339] [2021-10-13 20:42:15,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990207339] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:15,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:15,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-13 20:42:15,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008248720] [2021-10-13 20:42:15,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 20:42:15,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 20:42:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:42:15,519 INFO L87 Difference]: Start difference. First operand 46062 states and 220644 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:16,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:16,441 INFO L93 Difference]: Finished difference Result 44544 states and 214045 transitions. [2021-10-13 20:42:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:42:16,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 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 [2021-10-13 20:42:16,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:16,828 INFO L225 Difference]: With dead ends: 44544 [2021-10-13 20:42:16,828 INFO L226 Difference]: Without dead ends: 44544 [2021-10-13 20:42:16,829 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 20:42:16,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44544 states. [2021-10-13 20:42:18,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44544 to 44544. [2021-10-13 20:42:18,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44544 states, 44539 states have (on average 4.805788185635062) internal successors, (214045), 44543 states have internal predecessors, (214045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:19,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44544 states to 44544 states and 214045 transitions. [2021-10-13 20:42:19,213 INFO L78 Accepts]: Start accepts. Automaton has 44544 states and 214045 transitions. Word has length 9 [2021-10-13 20:42:19,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:19,213 INFO L470 AbstractCegarLoop]: Abstraction has 44544 states and 214045 transitions. [2021-10-13 20:42:19,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:19,214 INFO L276 IsEmpty]: Start isEmpty. Operand 44544 states and 214045 transitions. [2021-10-13 20:42:19,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 20:42:19,215 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:19,215 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:19,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:19,423 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 [2021-10-13 20:42:19,424 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:19,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:19,425 INFO L82 PathProgramCache]: Analyzing trace with hash 884250327, now seen corresponding path program 1 times [2021-10-13 20:42:19,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:19,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96201264] [2021-10-13 20:42:19,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:19,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:19,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:19,428 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) [2021-10-13 20:42:19,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-13 20:42:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:19,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 20:42:19,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:19,803 INFO L354 Elim1Store]: treesize reduction 349, result has 15.9 percent of original size [2021-10-13 20:42:19,803 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 6 case distinctions, treesize of input 24 treesize of output 71 [2021-10-13 20:42:19,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:19,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:20,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:20,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:20,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96201264] [2021-10-13 20:42:20,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96201264] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:20,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:20,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-13 20:42:20,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398419430] [2021-10-13 20:42:20,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 20:42:20,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:20,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 20:42:20,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:42:20,055 INFO L87 Difference]: Start difference. First operand 44544 states and 214045 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-13 20:42:21,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:21,065 INFO L93 Difference]: Finished difference Result 43026 states and 207446 transitions. [2021-10-13 20:42:21,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:42:21,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2021-10-13 20:42:21,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:21,398 INFO L225 Difference]: With dead ends: 43026 [2021-10-13 20:42:21,399 INFO L226 Difference]: Without dead ends: 43026 [2021-10-13 20:42:21,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 20:42:21,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43026 states. [2021-10-13 20:42:23,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43026 to 43026. [2021-10-13 20:42:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43026 states, 43023 states have (on average 4.8217465076819375) internal successors, (207446), 43025 states have internal predecessors, (207446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43026 states to 43026 states and 207446 transitions. [2021-10-13 20:42:24,271 INFO L78 Accepts]: Start accepts. Automaton has 43026 states and 207446 transitions. Word has length 9 [2021-10-13 20:42:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:24,271 INFO L470 AbstractCegarLoop]: Abstraction has 43026 states and 207446 transitions. [2021-10-13 20:42:24,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2021-10-13 20:42:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 43026 states and 207446 transitions. [2021-10-13 20:42:24,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 20:42:24,281 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:24,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:24,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:24,512 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 [2021-10-13 20:42:24,513 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:24,513 INFO L82 PathProgramCache]: Analyzing trace with hash -638944834, now seen corresponding path program 1 times [2021-10-13 20:42:24,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:24,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750100037] [2021-10-13 20:42:24,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:24,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:24,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:24,519 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) [2021-10-13 20:42:24,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-13 20:42:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:24,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:42:24,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:24,983 INFO L354 Elim1Store]: treesize reduction 355, result has 14.5 percent of original size [2021-10-13 20:42:24,984 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 6 case distinctions, treesize of input 45 treesize of output 85 [2021-10-13 20:42:24,990 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 150 treesize of output 148 [2021-10-13 20:42:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:26,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:26,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:26,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750100037] [2021-10-13 20:42:26,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750100037] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:26,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:26,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-10-13 20:42:26,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736083523] [2021-10-13 20:42:26,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-13 20:42:26,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:26,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-13 20:42:26,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:42:26,862 INFO L87 Difference]: Start difference. First operand 43026 states and 207446 transitions. Second operand has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:27,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:27,282 INFO L93 Difference]: Finished difference Result 33954 states and 160358 transitions. [2021-10-13 20:42:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:42:27,282 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 20:42:27,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:27,466 INFO L225 Difference]: With dead ends: 33954 [2021-10-13 20:42:27,467 INFO L226 Difference]: Without dead ends: 33954 [2021-10-13 20:42:27,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 282.9ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-13 20:42:27,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33954 states. [2021-10-13 20:42:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33954 to 33954. [2021-10-13 20:42:29,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33954 states, 33952 states have (on average 4.723079641847314) internal successors, (160358), 33953 states have internal predecessors, (160358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:29,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33954 states to 33954 states and 160358 transitions. [2021-10-13 20:42:29,294 INFO L78 Accepts]: Start accepts. Automaton has 33954 states and 160358 transitions. Word has length 11 [2021-10-13 20:42:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:29,294 INFO L470 AbstractCegarLoop]: Abstraction has 33954 states and 160358 transitions. [2021-10-13 20:42:29,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 33954 states and 160358 transitions. [2021-10-13 20:42:29,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 20:42:29,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:29,296 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:29,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-13 20:42:29,496 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 [2021-10-13 20:42:29,497 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:29,498 INFO L82 PathProgramCache]: Analyzing trace with hash -638944833, now seen corresponding path program 1 times [2021-10-13 20:42:29,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:29,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461529891] [2021-10-13 20:42:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:29,500 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:29,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:29,501 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) [2021-10-13 20:42:29,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-13 20:42:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:29,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 20:42:29,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:29,929 INFO L354 Elim1Store]: treesize reduction 499, result has 13.2 percent of original size [2021-10-13 20:42:29,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 7 case distinctions, treesize of input 27 treesize of output 81 [2021-10-13 20:42:30,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:30,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:30,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:30,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:30,639 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461529891] [2021-10-13 20:42:30,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461529891] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:30,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:30,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 20:42:30,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94503613] [2021-10-13 20:42:30,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 20:42:30,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:30,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 20:42:30,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:42:30,641 INFO L87 Difference]: Start difference. First operand 33954 states and 160358 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:31,342 INFO L93 Difference]: Finished difference Result 24882 states and 113270 transitions. [2021-10-13 20:42:31,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:42:31,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-13 20:42:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:31,499 INFO L225 Difference]: With dead ends: 24882 [2021-10-13 20:42:31,500 INFO L226 Difference]: Without dead ends: 24882 [2021-10-13 20:42:31,500 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 134.2ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:42:31,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24882 states. [2021-10-13 20:42:32,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24882 to 24882. [2021-10-13 20:42:32,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24882 states, 24881 states have (on average 4.552469756038745) internal successors, (113270), 24881 states have internal predecessors, (113270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:32,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24882 states to 24882 states and 113270 transitions. [2021-10-13 20:42:32,565 INFO L78 Accepts]: Start accepts. Automaton has 24882 states and 113270 transitions. Word has length 11 [2021-10-13 20:42:32,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:32,566 INFO L470 AbstractCegarLoop]: Abstraction has 24882 states and 113270 transitions. [2021-10-13 20:42:32,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:32,566 INFO L276 IsEmpty]: Start isEmpty. Operand 24882 states and 113270 transitions. [2021-10-13 20:42:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:42:32,704 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:32,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:32,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-10-13 20:42:32,918 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 [2021-10-13 20:42:32,919 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:32,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:32,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1536190807, now seen corresponding path program 1 times [2021-10-13 20:42:32,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:32,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724599985] [2021-10-13 20:42:32,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 20:42:32,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:32,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:32,923 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) [2021-10-13 20:42:32,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-13 20:42:33,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:42:33,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:42:33,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:33,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:33,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:33,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:33,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:33,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1724599985] [2021-10-13 20:42:33,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1724599985] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:33,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:33,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 20:42:33,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690477974] [2021-10-13 20:42:33,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 20:42:33,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:33,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 20:42:33,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:42:33,438 INFO L87 Difference]: Start difference. First operand 24882 states and 113270 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:35,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:42:35,199 INFO L93 Difference]: Finished difference Result 34348 states and 155806 transitions. [2021-10-13 20:42:35,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 20:42:35,200 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 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 47 [2021-10-13 20:42:35,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:42:35,466 INFO L225 Difference]: With dead ends: 34348 [2021-10-13 20:42:35,467 INFO L226 Difference]: Without dead ends: 28522 [2021-10-13 20:42:35,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 286.6ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:42:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28522 states. [2021-10-13 20:42:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28522 to 26746. [2021-10-13 20:42:36,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26746 states, 26745 states have (on average 4.539054028790428) internal successors, (121397), 26745 states have internal predecessors, (121397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:36,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26746 states to 26746 states and 121397 transitions. [2021-10-13 20:42:36,848 INFO L78 Accepts]: Start accepts. Automaton has 26746 states and 121397 transitions. Word has length 47 [2021-10-13 20:42:36,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:42:36,849 INFO L470 AbstractCegarLoop]: Abstraction has 26746 states and 121397 transitions. [2021-10-13 20:42:36,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:42:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand 26746 states and 121397 transitions. [2021-10-13 20:42:36,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:42:36,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:42:36,953 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:42:36,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-13 20:42:37,161 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 [2021-10-13 20:42:37,162 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:42:37,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:42:37,164 INFO L82 PathProgramCache]: Analyzing trace with hash 17900705, now seen corresponding path program 2 times [2021-10-13 20:42:37,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:42:37,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019199493] [2021-10-13 20:42:37,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:42:37,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:42:37,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:42:37,168 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) [2021-10-13 20:42:37,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-13 20:42:37,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:42:37,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:42:37,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-13 20:42:37,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:42:37,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:37,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:42:38,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:42:38,828 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:42:38,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019199493] [2021-10-13 20:42:38,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019199493] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:42:38,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:42:38,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 14] imperfect sequences [] total 26 [2021-10-13 20:42:38,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841722337] [2021-10-13 20:42:38,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-13 20:42:38,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:42:38,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-13 20:42:38,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2021-10-13 20:42:38,831 INFO L87 Difference]: Start difference. First operand 26746 states and 121397 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:48,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:48,516 INFO L93 Difference]: Finished difference Result 93426 states and 373059 transitions. [2021-10-13 20:45:48,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 241 states. [2021-10-13 20:45:48,518 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 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 47 [2021-10-13 20:45:48,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:49,203 INFO L225 Difference]: With dead ends: 93426 [2021-10-13 20:45:49,203 INFO L226 Difference]: Without dead ends: 78912 [2021-10-13 20:45:49,225 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 244 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24624 ImplicationChecksByTransitivity, 133454.2ms TimeCoverageRelationStatistics Valid=6827, Invalid=53443, Unknown=0, NotChecked=0, Total=60270 [2021-10-13 20:45:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78912 states. [2021-10-13 20:45:51,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78912 to 29212. [2021-10-13 20:45:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29212 states, 29211 states have (on average 4.329636095991236) internal successors, (126473), 29211 states have internal predecessors, (126473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29212 states to 29212 states and 126473 transitions. [2021-10-13 20:45:51,743 INFO L78 Accepts]: Start accepts. Automaton has 29212 states and 126473 transitions. Word has length 47 [2021-10-13 20:45:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:51,743 INFO L470 AbstractCegarLoop]: Abstraction has 29212 states and 126473 transitions. [2021-10-13 20:45:51,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 26 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 29212 states and 126473 transitions. [2021-10-13 20:45:51,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:45:51,836 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:51,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:51,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:52,041 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 [2021-10-13 20:45:52,042 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:45:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:45:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1687690081, now seen corresponding path program 3 times [2021-10-13 20:45:52,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:45:52,045 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539559647] [2021-10-13 20:45:52,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:45:52,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:45:52,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:45:52,048 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) [2021-10-13 20:45:52,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-13 20:45:52,276 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:45:52,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:45:52,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:45:52,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:45:53,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:45:53,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:45:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:45:53,356 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:45:53,356 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539559647] [2021-10-13 20:45:53,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539559647] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:45:53,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:45:53,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-13 20:45:53,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044851853] [2021-10-13 20:45:53,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-13 20:45:53,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:45:53,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-13 20:45:53,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:45:53,359 INFO L87 Difference]: Start difference. First operand 29212 states and 126473 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:53,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:53,851 INFO L93 Difference]: Finished difference Result 46275 states and 198651 transitions. [2021-10-13 20:45:53,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 20:45:53,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 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 47 [2021-10-13 20:45:53,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:53,986 INFO L225 Difference]: With dead ends: 46275 [2021-10-13 20:45:53,986 INFO L226 Difference]: Without dead ends: 30140 [2021-10-13 20:45:53,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 84 SyntacticMatches, 5 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-13 20:45:54,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30140 states. [2021-10-13 20:45:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30140 to 30140. [2021-10-13 20:45:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30140 states, 30139 states have (on average 4.221473837884469) internal successors, (127231), 30139 states have internal predecessors, (127231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30140 states to 30140 states and 127231 transitions. [2021-10-13 20:45:55,653 INFO L78 Accepts]: Start accepts. Automaton has 30140 states and 127231 transitions. Word has length 47 [2021-10-13 20:45:55,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:55,653 INFO L470 AbstractCegarLoop]: Abstraction has 30140 states and 127231 transitions. [2021-10-13 20:45:55,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 30140 states and 127231 transitions. [2021-10-13 20:45:55,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:45:55,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:55,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:55,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-13 20:45:55,946 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 [2021-10-13 20:45:55,947 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:45:55,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:45:55,949 INFO L82 PathProgramCache]: Analyzing trace with hash 827924503, now seen corresponding path program 4 times [2021-10-13 20:45:55,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:45:55,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650389981] [2021-10-13 20:45:55,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:45:55,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:45:55,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:45:55,951 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) [2021-10-13 20:45:55,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-13 20:45:56,170 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:45:56,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:45:56,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 20:45:56,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:45:56,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:45:56,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:45:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:45:56,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:45:56,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650389981] [2021-10-13 20:45:56,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650389981] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:45:56,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:45:56,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-13 20:45:56,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106913884] [2021-10-13 20:45:56,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-13 20:45:56,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:45:56,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-13 20:45:56,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-10-13 20:45:56,591 INFO L87 Difference]: Start difference. First operand 30140 states and 127231 transitions. Second operand has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:58,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:45:58,143 INFO L93 Difference]: Finished difference Result 27100 states and 107335 transitions. [2021-10-13 20:45:58,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:45:58,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 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 47 [2021-10-13 20:45:58,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:45:58,632 INFO L225 Difference]: With dead ends: 27100 [2021-10-13 20:45:58,632 INFO L226 Difference]: Without dead ends: 27100 [2021-10-13 20:45:58,632 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 447.1ms TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:45:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27100 states. [2021-10-13 20:45:59,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27100 to 25056. [2021-10-13 20:45:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25056 states, 25055 states have (on average 3.9668728796647375) internal successors, (99390), 25055 states have internal predecessors, (99390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:59,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25056 states to 25056 states and 99390 transitions. [2021-10-13 20:45:59,722 INFO L78 Accepts]: Start accepts. Automaton has 25056 states and 99390 transitions. Word has length 47 [2021-10-13 20:45:59,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:45:59,723 INFO L470 AbstractCegarLoop]: Abstraction has 25056 states and 99390 transitions. [2021-10-13 20:45:59,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.2) internal successors, (62), 9 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:45:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 25056 states and 99390 transitions. [2021-10-13 20:45:59,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:45:59,808 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:45:59,808 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:45:59,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:00,031 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 [2021-10-13 20:46:00,032 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:00,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:00,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1198391353, now seen corresponding path program 5 times [2021-10-13 20:46:00,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:00,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172049868] [2021-10-13 20:46:00,034 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:46:00,034 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:00,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:00,036 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) [2021-10-13 20:46:00,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-13 20:46:00,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:46:00,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:00,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-13 20:46:00,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:00,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:00,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:00,798 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:00,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172049868] [2021-10-13 20:46:00,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172049868] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:00,798 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:00,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-13 20:46:00,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617310473] [2021-10-13 20:46:00,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-13 20:46:00,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:00,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-13 20:46:00,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-13 20:46:00,800 INFO L87 Difference]: Start difference. First operand 25056 states and 99390 transitions. Second operand has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:03,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:03,597 INFO L93 Difference]: Finished difference Result 26748 states and 101854 transitions. [2021-10-13 20:46:03,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-13 20:46:03,598 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:03,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:03,683 INFO L225 Difference]: With dead ends: 26748 [2021-10-13 20:46:03,683 INFO L226 Difference]: Without dead ends: 22718 [2021-10-13 20:46:03,684 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 910.8ms TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=0, NotChecked=0, Total=702 [2021-10-13 20:46:04,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22718 states. [2021-10-13 20:46:04,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22718 to 22028. [2021-10-13 20:46:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22028 states, 22027 states have (on average 3.878194942570482) internal successors, (85425), 22027 states have internal predecessors, (85425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:04,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22028 states to 22028 states and 85425 transitions. [2021-10-13 20:46:04,585 INFO L78 Accepts]: Start accepts. Automaton has 22028 states and 85425 transitions. Word has length 47 [2021-10-13 20:46:04,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:04,586 INFO L470 AbstractCegarLoop]: Abstraction has 22028 states and 85425 transitions. [2021-10-13 20:46:04,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:04,586 INFO L276 IsEmpty]: Start isEmpty. Operand 22028 states and 85425 transitions. [2021-10-13 20:46:04,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:04,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:04,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:04,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:04,836 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 [2021-10-13 20:46:04,836 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:04,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:04,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1373125299, now seen corresponding path program 6 times [2021-10-13 20:46:04,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:04,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692120790] [2021-10-13 20:46:04,839 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:46:04,839 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:04,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:04,840 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) [2021-10-13 20:46:04,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-13 20:46:05,090 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:46:05,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:05,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:46:05,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:05,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:06,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:06,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692120790] [2021-10-13 20:46:06,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692120790] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:06,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:06,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:46:06,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995879324] [2021-10-13 20:46:06,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:46:06,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:06,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:46:06,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:46:06,056 INFO L87 Difference]: Start difference. First operand 22028 states and 85425 transitions. Second operand has 15 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:07,703 INFO L93 Difference]: Finished difference Result 22952 states and 88104 transitions. [2021-10-13 20:46:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-13 20:46:07,704 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:07,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:07,783 INFO L225 Difference]: With dead ends: 22952 [2021-10-13 20:46:07,784 INFO L226 Difference]: Without dead ends: 21536 [2021-10-13 20:46:07,784 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 706.1ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-10-13 20:46:07,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21536 states. [2021-10-13 20:46:08,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21536 to 21428. [2021-10-13 20:46:08,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21428 states, 21427 states have (on average 3.8970924534465863) internal successors, (83503), 21427 states have internal predecessors, (83503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:08,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21428 states to 21428 states and 83503 transitions. [2021-10-13 20:46:08,552 INFO L78 Accepts]: Start accepts. Automaton has 21428 states and 83503 transitions. Word has length 47 [2021-10-13 20:46:08,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:08,553 INFO L470 AbstractCegarLoop]: Abstraction has 21428 states and 83503 transitions. [2021-10-13 20:46:08,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.4) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:08,553 INFO L276 IsEmpty]: Start isEmpty. Operand 21428 states and 83503 transitions. [2021-10-13 20:46:08,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:08,611 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:08,611 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:08,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:08,811 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 [2021-10-13 20:46:08,812 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:08,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:08,813 INFO L82 PathProgramCache]: Analyzing trace with hash -18456889, now seen corresponding path program 7 times [2021-10-13 20:46:08,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:08,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290681101] [2021-10-13 20:46:08,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:46:08,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:08,815 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) [2021-10-13 20:46:08,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-13 20:46:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:46:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 20:46:09,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:09,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:09,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:09,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:09,424 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290681101] [2021-10-13 20:46:09,424 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1290681101] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:09,424 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:09,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-13 20:46:09,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811469803] [2021-10-13 20:46:09,425 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 20:46:09,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 20:46:09,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-13 20:46:09,426 INFO L87 Difference]: Start difference. First operand 21428 states and 83503 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:10,420 INFO L93 Difference]: Finished difference Result 18356 states and 68692 transitions. [2021-10-13 20:46:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-13 20:46:10,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:10,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:10,708 INFO L225 Difference]: With dead ends: 18356 [2021-10-13 20:46:10,709 INFO L226 Difference]: Without dead ends: 16086 [2021-10-13 20:46:10,709 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 270.9ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-10-13 20:46:10,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16086 states. [2021-10-13 20:46:11,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16086 to 15774. [2021-10-13 20:46:11,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15774 states, 15773 states have (on average 3.827616813542129) internal successors, (60373), 15773 states have internal predecessors, (60373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:11,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15774 states to 15774 states and 60373 transitions. [2021-10-13 20:46:11,128 INFO L78 Accepts]: Start accepts. Automaton has 15774 states and 60373 transitions. Word has length 47 [2021-10-13 20:46:11,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:11,129 INFO L470 AbstractCegarLoop]: Abstraction has 15774 states and 60373 transitions. [2021-10-13 20:46:11,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:11,129 INFO L276 IsEmpty]: Start isEmpty. Operand 15774 states and 60373 transitions. [2021-10-13 20:46:11,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:11,165 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:11,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:11,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:11,366 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 [2021-10-13 20:46:11,367 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:11,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1375004725, now seen corresponding path program 8 times [2021-10-13 20:46:11,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:11,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273615549] [2021-10-13 20:46:11,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:46:11,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:11,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:11,371 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) [2021-10-13 20:46:11,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-13 20:46:11,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:46:11,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:11,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:46:11,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:11,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:11,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:12,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:12,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:12,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273615549] [2021-10-13 20:46:12,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273615549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:12,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:12,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:46:12,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758715730] [2021-10-13 20:46:12,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:46:12,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:12,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:46:12,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:46:12,233 INFO L87 Difference]: Start difference. First operand 15774 states and 60373 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:17,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:17,955 INFO L93 Difference]: Finished difference Result 21488 states and 82778 transitions. [2021-10-13 20:46:17,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-13 20:46:17,956 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:17,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:18,033 INFO L225 Difference]: With dead ends: 21488 [2021-10-13 20:46:18,033 INFO L226 Difference]: Without dead ends: 21488 [2021-10-13 20:46:18,033 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1758.6ms TimeCoverageRelationStatistics Valid=268, Invalid=788, Unknown=0, NotChecked=0, Total=1056 [2021-10-13 20:46:18,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21488 states. [2021-10-13 20:46:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21488 to 16546. [2021-10-13 20:46:18,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16546 states, 16545 states have (on average 3.819885161680266) internal successors, (63200), 16545 states have internal predecessors, (63200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:18,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16546 states to 16546 states and 63200 transitions. [2021-10-13 20:46:18,795 INFO L78 Accepts]: Start accepts. Automaton has 16546 states and 63200 transitions. Word has length 47 [2021-10-13 20:46:18,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:18,796 INFO L470 AbstractCegarLoop]: Abstraction has 16546 states and 63200 transitions. [2021-10-13 20:46:18,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:18,796 INFO L276 IsEmpty]: Start isEmpty. Operand 16546 states and 63200 transitions. [2021-10-13 20:46:18,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:18,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:18,838 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:18,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:19,038 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 [2021-10-13 20:46:19,039 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash 250483629, now seen corresponding path program 9 times [2021-10-13 20:46:19,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:19,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566662538] [2021-10-13 20:46:19,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:46:19,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:19,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:19,044 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) [2021-10-13 20:46:19,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-13 20:46:19,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:46:19,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:19,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:46:19,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:19,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:19,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:20,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:20,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566662538] [2021-10-13 20:46:20,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566662538] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:20,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:20,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:46:20,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168349843] [2021-10-13 20:46:20,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:46:20,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:20,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:46:20,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:46:20,215 INFO L87 Difference]: Start difference. First operand 16546 states and 63200 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:31,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:31,439 INFO L93 Difference]: Finished difference Result 27398 states and 105550 transitions. [2021-10-13 20:46:31,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:46:31,441 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:31,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:31,793 INFO L225 Difference]: With dead ends: 27398 [2021-10-13 20:46:31,794 INFO L226 Difference]: Without dead ends: 25616 [2021-10-13 20:46:31,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 4235.2ms TimeCoverageRelationStatistics Valid=532, Invalid=1724, Unknown=0, NotChecked=0, Total=2256 [2021-10-13 20:46:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25616 states. [2021-10-13 20:46:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25616 to 17680. [2021-10-13 20:46:32,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17680 states, 17679 states have (on average 3.8107359013518862) internal successors, (67370), 17679 states have internal predecessors, (67370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:32,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17680 states to 17680 states and 67370 transitions. [2021-10-13 20:46:32,308 INFO L78 Accepts]: Start accepts. Automaton has 17680 states and 67370 transitions. Word has length 47 [2021-10-13 20:46:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:32,308 INFO L470 AbstractCegarLoop]: Abstraction has 17680 states and 67370 transitions. [2021-10-13 20:46:32,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 17680 states and 67370 transitions. [2021-10-13 20:46:32,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:32,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:32,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:32,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:32,550 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 [2021-10-13 20:46:32,551 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:32,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:32,552 INFO L82 PathProgramCache]: Analyzing trace with hash -87309625, now seen corresponding path program 10 times [2021-10-13 20:46:32,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:32,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397997796] [2021-10-13 20:46:32,554 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:46:32,554 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:32,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:32,555 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) [2021-10-13 20:46:32,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-13 20:46:32,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:46:32,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:32,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:46:32,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:33,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:33,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:33,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:33,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397997796] [2021-10-13 20:46:33,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397997796] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:33,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:33,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:46:33,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629811961] [2021-10-13 20:46:33,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:46:33,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:33,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:46:33,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:46:33,974 INFO L87 Difference]: Start difference. First operand 17680 states and 67370 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:48,969 INFO L93 Difference]: Finished difference Result 27274 states and 104193 transitions. [2021-10-13 20:46:48,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 20:46:48,970 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:49,064 INFO L225 Difference]: With dead ends: 27274 [2021-10-13 20:46:49,065 INFO L226 Difference]: Without dead ends: 25940 [2021-10-13 20:46:49,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 6156.6ms TimeCoverageRelationStatistics Valid=677, Invalid=1975, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 20:46:49,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25940 states. [2021-10-13 20:46:49,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25940 to 18530. [2021-10-13 20:46:49,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18530 states, 18529 states have (on average 3.8027956176803928) internal successors, (70462), 18529 states have internal predecessors, (70462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:49,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18530 states to 18530 states and 70462 transitions. [2021-10-13 20:46:49,826 INFO L78 Accepts]: Start accepts. Automaton has 18530 states and 70462 transitions. Word has length 47 [2021-10-13 20:46:49,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:49,827 INFO L470 AbstractCegarLoop]: Abstraction has 18530 states and 70462 transitions. [2021-10-13 20:46:49,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:49,827 INFO L276 IsEmpty]: Start isEmpty. Operand 18530 states and 70462 transitions. [2021-10-13 20:46:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:49,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:49,874 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:49,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:50,074 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 [2021-10-13 20:46:50,075 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:50,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:50,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1711491801, now seen corresponding path program 11 times [2021-10-13 20:46:50,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:50,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120704123] [2021-10-13 20:46:50,077 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:46:50,077 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:50,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:50,079 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) [2021-10-13 20:46:50,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-13 20:46:50,382 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:46:50,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:50,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:46:50,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:50,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:50,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:50,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:50,925 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:50,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120704123] [2021-10-13 20:46:50,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120704123] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:50,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:50,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:46:50,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781166591] [2021-10-13 20:46:50,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:46:50,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:46:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:46:50,928 INFO L87 Difference]: Start difference. First operand 18530 states and 70462 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:55,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:46:55,682 INFO L93 Difference]: Finished difference Result 23144 states and 87698 transitions. [2021-10-13 20:46:55,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-13 20:46:55,683 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:46:55,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:46:55,761 INFO L225 Difference]: With dead ends: 23144 [2021-10-13 20:46:55,761 INFO L226 Difference]: Without dead ends: 23144 [2021-10-13 20:46:55,762 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 1617.9ms TimeCoverageRelationStatistics Valid=299, Invalid=1183, Unknown=0, NotChecked=0, Total=1482 [2021-10-13 20:46:55,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23144 states. [2021-10-13 20:46:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23144 to 18664. [2021-10-13 20:46:56,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18664 states, 18663 states have (on average 3.7969779778170714) internal successors, (70863), 18663 states have internal predecessors, (70863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:56,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18664 states to 18664 states and 70863 transitions. [2021-10-13 20:46:56,523 INFO L78 Accepts]: Start accepts. Automaton has 18664 states and 70863 transitions. Word has length 47 [2021-10-13 20:46:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:46:56,523 INFO L470 AbstractCegarLoop]: Abstraction has 18664 states and 70863 transitions. [2021-10-13 20:46:56,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:46:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 18664 states and 70863 transitions. [2021-10-13 20:46:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:46:56,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:46:56,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:46:56,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-13 20:46:56,768 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 [2021-10-13 20:46:56,769 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:46:56,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:46:56,770 INFO L82 PathProgramCache]: Analyzing trace with hash 586970705, now seen corresponding path program 12 times [2021-10-13 20:46:56,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:46:56,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037460241] [2021-10-13 20:46:56,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:46:56,771 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:46:56,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:46:56,773 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) [2021-10-13 20:46:56,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-13 20:46:57,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:46:57,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:46:57,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:46:57,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:46:57,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:57,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:46:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:46:57,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:46:57,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037460241] [2021-10-13 20:46:57,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037460241] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:46:57,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:46:57,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:46:57,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023719260] [2021-10-13 20:46:57,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:46:57,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:46:57,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:46:57,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:46:57,823 INFO L87 Difference]: Start difference. First operand 18664 states and 70863 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:47:10,059 INFO L93 Difference]: Finished difference Result 31272 states and 119985 transitions. [2021-10-13 20:47:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-13 20:47:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 47 [2021-10-13 20:47:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:47:10,171 INFO L225 Difference]: With dead ends: 31272 [2021-10-13 20:47:10,171 INFO L226 Difference]: Without dead ends: 29762 [2021-10-13 20:47:10,172 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 4742.1ms TimeCoverageRelationStatistics Valid=570, Invalid=1980, Unknown=0, NotChecked=0, Total=2550 [2021-10-13 20:47:10,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29762 states. [2021-10-13 20:47:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29762 to 18584. [2021-10-13 20:47:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18584 states, 18583 states have (on average 3.799278910832481) internal successors, (70602), 18583 states have internal predecessors, (70602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:11,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18584 states to 18584 states and 70602 transitions. [2021-10-13 20:47:11,045 INFO L78 Accepts]: Start accepts. Automaton has 18584 states and 70602 transitions. Word has length 47 [2021-10-13 20:47:11,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:47:11,046 INFO L470 AbstractCegarLoop]: Abstraction has 18584 states and 70602 transitions. [2021-10-13 20:47:11,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:11,046 INFO L276 IsEmpty]: Start isEmpty. Operand 18584 states and 70602 transitions. [2021-10-13 20:47:11,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:47:11,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:47:11,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:47:11,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-13 20:47:11,321 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 [2021-10-13 20:47:11,321 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:47:11,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:47:11,324 INFO L82 PathProgramCache]: Analyzing trace with hash 249177451, now seen corresponding path program 13 times [2021-10-13 20:47:11,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:47:11,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968885078] [2021-10-13 20:47:11,325 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:47:11,325 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:47:11,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:47:11,326 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) [2021-10-13 20:47:11,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-13 20:47:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:47:11,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:47:11,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:47:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:11,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:47:12,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:12,493 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:47:12,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968885078] [2021-10-13 20:47:12,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968885078] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:47:12,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:47:12,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:47:12,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127316342] [2021-10-13 20:47:12,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:47:12,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:47:12,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:47:12,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:47:12,496 INFO L87 Difference]: Start difference. First operand 18584 states and 70602 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:28,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:47:28,000 INFO L93 Difference]: Finished difference Result 33090 states and 125250 transitions. [2021-10-13 20:47:28,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-13 20:47:28,002 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:47:28,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:47:28,116 INFO L225 Difference]: With dead ends: 33090 [2021-10-13 20:47:28,116 INFO L226 Difference]: Without dead ends: 31062 [2021-10-13 20:47:28,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 6253.5ms TimeCoverageRelationStatistics Valid=653, Invalid=2103, Unknown=0, NotChecked=0, Total=2756 [2021-10-13 20:47:28,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31062 states. [2021-10-13 20:47:28,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31062 to 18420. [2021-10-13 20:47:28,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18420 states, 18419 states have (on average 3.7981975134372115) internal successors, (69959), 18419 states have internal predecessors, (69959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18420 states to 18420 states and 69959 transitions. [2021-10-13 20:47:28,961 INFO L78 Accepts]: Start accepts. Automaton has 18420 states and 69959 transitions. Word has length 47 [2021-10-13 20:47:28,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:47:28,962 INFO L470 AbstractCegarLoop]: Abstraction has 18420 states and 69959 transitions. [2021-10-13 20:47:28,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:28,963 INFO L276 IsEmpty]: Start isEmpty. Operand 18420 states and 69959 transitions. [2021-10-13 20:47:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:47:29,015 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:47:29,015 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:47:29,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-13 20:47:29,215 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 [2021-10-13 20:47:29,216 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:47:29,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:47:29,217 INFO L82 PathProgramCache]: Analyzing trace with hash 7069221, now seen corresponding path program 14 times [2021-10-13 20:47:29,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:47:29,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974716669] [2021-10-13 20:47:29,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:47:29,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:47:29,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:47:29,219 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) [2021-10-13 20:47:29,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-13 20:47:29,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:47:29,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:47:29,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:47:29,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:47:29,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:29,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:47:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:30,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:47:30,255 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974716669] [2021-10-13 20:47:30,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974716669] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:47:30,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:47:30,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:47:30,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725766969] [2021-10-13 20:47:30,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:47:30,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:47:30,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:47:30,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:47:30,259 INFO L87 Difference]: Start difference. First operand 18420 states and 69959 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:47:40,708 INFO L93 Difference]: Finished difference Result 27168 states and 102221 transitions. [2021-10-13 20:47:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-13 20:47:40,709 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:47:40,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:47:41,076 INFO L225 Difference]: With dead ends: 27168 [2021-10-13 20:47:41,076 INFO L226 Difference]: Without dead ends: 25676 [2021-10-13 20:47:41,076 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 4096.3ms TimeCoverageRelationStatistics Valid=644, Invalid=2662, Unknown=0, NotChecked=0, Total=3306 [2021-10-13 20:47:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25676 states. [2021-10-13 20:47:41,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25676 to 18514. [2021-10-13 20:47:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18514 states, 18513 states have (on average 3.7936585102360505) internal successors, (70232), 18513 states have internal predecessors, (70232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18514 states to 18514 states and 70232 transitions. [2021-10-13 20:47:41,615 INFO L78 Accepts]: Start accepts. Automaton has 18514 states and 70232 transitions. Word has length 47 [2021-10-13 20:47:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:47:41,615 INFO L470 AbstractCegarLoop]: Abstraction has 18514 states and 70232 transitions. [2021-10-13 20:47:41,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 18514 states and 70232 transitions. [2021-10-13 20:47:41,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:47:41,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:47:41,661 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:47:41,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-13 20:47:41,861 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 [2021-10-13 20:47:41,862 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:47:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:47:41,863 INFO L82 PathProgramCache]: Analyzing trace with hash -2049611171, now seen corresponding path program 15 times [2021-10-13 20:47:41,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:47:41,864 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371883960] [2021-10-13 20:47:41,864 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:47:41,864 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:47:41,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:47:41,865 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) [2021-10-13 20:47:41,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-13 20:47:42,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:47:42,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:47:42,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:47:42,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:47:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:42,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:47:43,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:43,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:47:43,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371883960] [2021-10-13 20:47:43,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371883960] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:47:43,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:47:43,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:47:43,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117706769] [2021-10-13 20:47:43,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:47:43,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:47:43,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:47:43,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:47:43,245 INFO L87 Difference]: Start difference. First operand 18514 states and 70232 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:56,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:47:56,900 INFO L93 Difference]: Finished difference Result 28670 states and 106916 transitions. [2021-10-13 20:47:56,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 20:47:56,901 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:47:56,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:47:56,995 INFO L225 Difference]: With dead ends: 28670 [2021-10-13 20:47:56,995 INFO L226 Difference]: Without dead ends: 27450 [2021-10-13 20:47:56,996 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 5260.3ms TimeCoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:47:57,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27450 states. [2021-10-13 20:47:57,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27450 to 18292. [2021-10-13 20:47:57,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18292 states, 18291 states have (on average 3.794051719424854) internal successors, (69397), 18291 states have internal predecessors, (69397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:57,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18292 states to 18292 states and 69397 transitions. [2021-10-13 20:47:57,715 INFO L78 Accepts]: Start accepts. Automaton has 18292 states and 69397 transitions. Word has length 47 [2021-10-13 20:47:57,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:47:57,716 INFO L470 AbstractCegarLoop]: Abstraction has 18292 states and 69397 transitions. [2021-10-13 20:47:57,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:47:57,716 INFO L276 IsEmpty]: Start isEmpty. Operand 18292 states and 69397 transitions. [2021-10-13 20:47:57,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:47:57,760 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:47:57,760 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:47:57,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-13 20:47:57,960 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 [2021-10-13 20:47:57,961 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:47:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:47:57,962 INFO L82 PathProgramCache]: Analyzing trace with hash -738743895, now seen corresponding path program 16 times [2021-10-13 20:47:57,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:47:57,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108694515] [2021-10-13 20:47:57,963 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:47:57,964 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:47:57,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:47:57,965 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) [2021-10-13 20:47:57,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-13 20:47:58,324 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:47:58,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:47:58,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:47:58,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:47:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:58,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:47:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:47:59,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:47:59,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108694515] [2021-10-13 20:47:59,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108694515] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:47:59,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:47:59,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:47:59,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235732643] [2021-10-13 20:47:59,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:47:59,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:47:59,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:47:59,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:47:59,364 INFO L87 Difference]: Start difference. First operand 18292 states and 69397 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:14,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:48:14,508 INFO L93 Difference]: Finished difference Result 25446 states and 94203 transitions. [2021-10-13 20:48:14,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-13 20:48:14,509 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:48:14,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:48:14,588 INFO L225 Difference]: With dead ends: 25446 [2021-10-13 20:48:14,589 INFO L226 Difference]: Without dead ends: 24086 [2021-10-13 20:48:14,589 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1163 ImplicationChecksByTransitivity, 6856.3ms TimeCoverageRelationStatistics Valid=877, Invalid=3413, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 20:48:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24086 states. [2021-10-13 20:48:15,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24086 to 18130. [2021-10-13 20:48:15,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18130 states, 18129 states have (on average 3.784764741574273) internal successors, (68614), 18129 states have internal predecessors, (68614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:15,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18130 states to 18130 states and 68614 transitions. [2021-10-13 20:48:15,272 INFO L78 Accepts]: Start accepts. Automaton has 18130 states and 68614 transitions. Word has length 47 [2021-10-13 20:48:15,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:48:15,273 INFO L470 AbstractCegarLoop]: Abstraction has 18130 states and 68614 transitions. [2021-10-13 20:48:15,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 18130 states and 68614 transitions. [2021-10-13 20:48:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:48:15,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:48:15,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:48:15,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-13 20:48:15,529 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 [2021-10-13 20:48:15,529 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:48:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:48:15,531 INFO L82 PathProgramCache]: Analyzing trace with hash 536552117, now seen corresponding path program 17 times [2021-10-13 20:48:15,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:48:15,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040749565] [2021-10-13 20:48:15,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:48:15,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:48:15,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:48:15,534 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) [2021-10-13 20:48:15,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-13 20:48:15,913 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:48:15,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:48:15,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:48:15,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:48:16,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:16,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:48:16,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:16,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:48:16,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040749565] [2021-10-13 20:48:16,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040749565] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:48:16,504 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:48:16,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:48:16,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368667759] [2021-10-13 20:48:16,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:48:16,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:48:16,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:48:16,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:48:16,506 INFO L87 Difference]: Start difference. First operand 18130 states and 68614 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:48:19,800 INFO L93 Difference]: Finished difference Result 22608 states and 82995 transitions. [2021-10-13 20:48:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 20:48:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:48:19,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:48:19,874 INFO L225 Difference]: With dead ends: 22608 [2021-10-13 20:48:19,874 INFO L226 Difference]: Without dead ends: 22592 [2021-10-13 20:48:19,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1215.7ms TimeCoverageRelationStatistics Valid=229, Invalid=893, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 20:48:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22592 states. [2021-10-13 20:48:20,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22592 to 18656. [2021-10-13 20:48:20,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18656 states, 18655 states have (on average 3.7650495845617797) internal successors, (70237), 18655 states have internal predecessors, (70237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:20,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18656 states to 18656 states and 70237 transitions. [2021-10-13 20:48:20,692 INFO L78 Accepts]: Start accepts. Automaton has 18656 states and 70237 transitions. Word has length 47 [2021-10-13 20:48:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:48:20,692 INFO L470 AbstractCegarLoop]: Abstraction has 18656 states and 70237 transitions. [2021-10-13 20:48:20,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 18656 states and 70237 transitions. [2021-10-13 20:48:20,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:48:20,741 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:48:20,741 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:48:20,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-13 20:48:20,955 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 [2021-10-13 20:48:20,956 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:48:20,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:48:20,956 INFO L82 PathProgramCache]: Analyzing trace with hash -587968979, now seen corresponding path program 18 times [2021-10-13 20:48:20,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:48:20,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222026649] [2021-10-13 20:48:20,958 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:48:20,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:48:20,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:48:20,959 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) [2021-10-13 20:48:20,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-13 20:48:21,366 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:48:21,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:48:21,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:48:21,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:48:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:21,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:48:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:22,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:48:22,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222026649] [2021-10-13 20:48:22,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222026649] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:48:22,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:48:22,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:48:22,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763401755] [2021-10-13 20:48:22,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:48:22,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:48:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:48:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:48:22,100 INFO L87 Difference]: Start difference. First operand 18656 states and 70237 transitions. Second operand has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:48:30,698 INFO L93 Difference]: Finished difference Result 25976 states and 95968 transitions. [2021-10-13 20:48:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 20:48:30,699 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 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 47 [2021-10-13 20:48:30,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:48:30,794 INFO L225 Difference]: With dead ends: 25976 [2021-10-13 20:48:30,794 INFO L226 Difference]: Without dead ends: 25070 [2021-10-13 20:48:30,795 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 3292.2ms TimeCoverageRelationStatistics Valid=470, Invalid=1336, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:48:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25070 states. [2021-10-13 20:48:31,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25070 to 18060. [2021-10-13 20:48:31,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18059 states have (on average 3.761836203555014) internal successors, (67935), 18059 states have internal predecessors, (67935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:31,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 67935 transitions. [2021-10-13 20:48:31,528 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 67935 transitions. Word has length 47 [2021-10-13 20:48:31,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:48:31,528 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 67935 transitions. [2021-10-13 20:48:31,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.0) internal successors, (68), 16 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:31,528 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 67935 transitions. [2021-10-13 20:48:31,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:48:31,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:48:31,574 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:48:31,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-13 20:48:31,774 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 [2021-10-13 20:48:31,775 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:48:31,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:48:31,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1910320079, now seen corresponding path program 19 times [2021-10-13 20:48:31,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:48:31,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2139344634] [2021-10-13 20:48:31,777 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:48:31,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:48:31,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:48:31,779 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) [2021-10-13 20:48:31,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-13 20:48:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:48:32,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:48:32,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:48:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:32,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:48:33,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:33,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:48:33,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2139344634] [2021-10-13 20:48:33,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2139344634] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:48:33,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:48:33,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:48:33,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046306990] [2021-10-13 20:48:33,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:48:33,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:48:33,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:48:33,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:48:33,102 INFO L87 Difference]: Start difference. First operand 18060 states and 67935 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:41,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:48:41,801 INFO L93 Difference]: Finished difference Result 25692 states and 94638 transitions. [2021-10-13 20:48:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 20:48:41,802 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:48:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:48:41,888 INFO L225 Difference]: With dead ends: 25692 [2021-10-13 20:48:41,888 INFO L226 Difference]: Without dead ends: 24722 [2021-10-13 20:48:41,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 3380.7ms TimeCoverageRelationStatistics Valid=470, Invalid=1336, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:48:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24722 states. [2021-10-13 20:48:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24722 to 17692. [2021-10-13 20:48:42,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17692 states, 17691 states have (on average 3.755242778814086) internal successors, (66434), 17691 states have internal predecessors, (66434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:42,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17692 states to 17692 states and 66434 transitions. [2021-10-13 20:48:42,578 INFO L78 Accepts]: Start accepts. Automaton has 17692 states and 66434 transitions. Word has length 47 [2021-10-13 20:48:42,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:48:42,578 INFO L470 AbstractCegarLoop]: Abstraction has 17692 states and 66434 transitions. [2021-10-13 20:48:42,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 16 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:42,578 INFO L276 IsEmpty]: Start isEmpty. Operand 17692 states and 66434 transitions. [2021-10-13 20:48:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:48:42,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:48:42,619 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:48:42,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-13 20:48:42,819 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 [2021-10-13 20:48:42,820 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:48:42,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:48:42,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1167870463, now seen corresponding path program 20 times [2021-10-13 20:48:42,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:48:42,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498490773] [2021-10-13 20:48:42,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:48:42,823 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:48:42,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:48:42,824 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) [2021-10-13 20:48:42,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-13 20:48:43,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:48:43,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:48:43,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:48:43,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:48:43,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:43,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:48:43,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:43,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:48:43,933 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498490773] [2021-10-13 20:48:43,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498490773] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:48:43,933 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:48:43,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:48:43,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327918387] [2021-10-13 20:48:43,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:48:43,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:48:43,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:48:43,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:48:43,935 INFO L87 Difference]: Start difference. First operand 17692 states and 66434 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:52,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:48:52,127 INFO L93 Difference]: Finished difference Result 25362 states and 93599 transitions. [2021-10-13 20:48:52,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-13 20:48:52,129 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:48:52,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:48:52,214 INFO L225 Difference]: With dead ends: 25362 [2021-10-13 20:48:52,214 INFO L226 Difference]: Without dead ends: 24252 [2021-10-13 20:48:52,215 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3342.6ms TimeCoverageRelationStatistics Valid=573, Invalid=2079, Unknown=0, NotChecked=0, Total=2652 [2021-10-13 20:48:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24252 states. [2021-10-13 20:48:52,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24252 to 17674. [2021-10-13 20:48:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17674 states, 17673 states have (on average 3.7560685791885926) internal successors, (66381), 17673 states have internal predecessors, (66381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:53,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17674 states to 17674 states and 66381 transitions. [2021-10-13 20:48:53,008 INFO L78 Accepts]: Start accepts. Automaton has 17674 states and 66381 transitions. Word has length 47 [2021-10-13 20:48:53,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:48:53,008 INFO L470 AbstractCegarLoop]: Abstraction has 17674 states and 66381 transitions. [2021-10-13 20:48:53,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:48:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 17674 states and 66381 transitions. [2021-10-13 20:48:53,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:48:53,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:48:53,051 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:48:53,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-13 20:48:53,256 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 [2021-10-13 20:48:53,257 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:48:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:48:53,258 INFO L82 PathProgramCache]: Analyzing trace with hash -1913683579, now seen corresponding path program 21 times [2021-10-13 20:48:53,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:48:53,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756228373] [2021-10-13 20:48:53,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:48:53,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:48:53,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:48:53,261 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) [2021-10-13 20:48:53,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-13 20:48:53,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:48:53,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:48:53,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:48:53,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:48:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:53,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:48:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:48:54,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:48:54,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756228373] [2021-10-13 20:48:54,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756228373] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:48:54,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:48:54,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:48:54,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120048426] [2021-10-13 20:48:54,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:48:54,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:48:54,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:48:54,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:48:54,534 INFO L87 Difference]: Start difference. First operand 17674 states and 66381 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:06,677 INFO L93 Difference]: Finished difference Result 28334 states and 104264 transitions. [2021-10-13 20:49:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:49:06,678 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:06,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:06,778 INFO L225 Difference]: With dead ends: 28334 [2021-10-13 20:49:06,779 INFO L226 Difference]: Without dead ends: 27062 [2021-10-13 20:49:06,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 4972.5ms TimeCoverageRelationStatistics Valid=700, Invalid=2380, Unknown=0, NotChecked=0, Total=3080 [2021-10-13 20:49:06,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27062 states. [2021-10-13 20:49:07,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27062 to 17656. [2021-10-13 20:49:07,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17656 states, 17655 states have (on average 3.7567827810818466) internal successors, (66326), 17655 states have internal predecessors, (66326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17656 states to 17656 states and 66326 transitions. [2021-10-13 20:49:07,593 INFO L78 Accepts]: Start accepts. Automaton has 17656 states and 66326 transitions. Word has length 47 [2021-10-13 20:49:07,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:07,594 INFO L470 AbstractCegarLoop]: Abstraction has 17656 states and 66326 transitions. [2021-10-13 20:49:07,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:07,597 INFO L276 IsEmpty]: Start isEmpty. Operand 17656 states and 66326 transitions. [2021-10-13 20:49:07,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:07,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:07,668 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:07,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:07,881 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 [2021-10-13 20:49:07,883 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:07,884 INFO L82 PathProgramCache]: Analyzing trace with hash -1950882515, now seen corresponding path program 22 times [2021-10-13 20:49:07,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:07,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824458451] [2021-10-13 20:49:07,885 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:49:07,885 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:07,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:07,888 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) [2021-10-13 20:49:07,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-13 20:49:08,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:49:08,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:49:08,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-13 20:49:08,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:08,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:08,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:09,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:09,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:09,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824458451] [2021-10-13 20:49:09,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824458451] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:09,015 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:09,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-13 20:49:09,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523300557] [2021-10-13 20:49:09,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-13 20:49:09,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-13 20:49:09,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-10-13 20:49:09,018 INFO L87 Difference]: Start difference. First operand 17656 states and 66326 transitions. Second operand has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:14,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:14,472 INFO L93 Difference]: Finished difference Result 23402 states and 84268 transitions. [2021-10-13 20:49:14,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-13 20:49:14,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:14,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:14,546 INFO L225 Difference]: With dead ends: 23402 [2021-10-13 20:49:14,546 INFO L226 Difference]: Without dead ends: 21540 [2021-10-13 20:49:14,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 317 ImplicationChecksByTransitivity, 2404.1ms TimeCoverageRelationStatistics Valid=369, Invalid=1437, Unknown=0, NotChecked=0, Total=1806 [2021-10-13 20:49:14,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21540 states. [2021-10-13 20:49:15,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21540 to 17214. [2021-10-13 20:49:15,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17214 states, 17213 states have (on average 3.715970487422297) internal successors, (63963), 17213 states have internal predecessors, (63963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17214 states to 17214 states and 63963 transitions. [2021-10-13 20:49:15,221 INFO L78 Accepts]: Start accepts. Automaton has 17214 states and 63963 transitions. Word has length 47 [2021-10-13 20:49:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:15,221 INFO L470 AbstractCegarLoop]: Abstraction has 17214 states and 63963 transitions. [2021-10-13 20:49:15,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.8823529411764706) internal successors, (66), 16 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:15,222 INFO L276 IsEmpty]: Start isEmpty. Operand 17214 states and 63963 transitions. [2021-10-13 20:49:15,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:15,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:15,263 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:15,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:15,468 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 [2021-10-13 20:49:15,468 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:15,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:15,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1598271665, now seen corresponding path program 23 times [2021-10-13 20:49:15,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:15,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2090303802] [2021-10-13 20:49:15,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:49:15,471 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:15,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:15,472 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) [2021-10-13 20:49:15,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-13 20:49:15,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:49:15,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:49:15,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:49:15,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:16,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:16,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:16,776 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:16,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2090303802] [2021-10-13 20:49:16,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2090303802] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:16,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:16,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:49:16,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830991732] [2021-10-13 20:49:16,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:49:16,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:49:16,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:49:16,778 INFO L87 Difference]: Start difference. First operand 17214 states and 63963 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:23,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:23,809 INFO L93 Difference]: Finished difference Result 22526 states and 82186 transitions. [2021-10-13 20:49:23,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-13 20:49:23,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:23,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:23,882 INFO L225 Difference]: With dead ends: 22526 [2021-10-13 20:49:23,882 INFO L226 Difference]: Without dead ends: 22204 [2021-10-13 20:49:23,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 2864.7ms TimeCoverageRelationStatistics Valid=489, Invalid=1581, Unknown=0, NotChecked=0, Total=2070 [2021-10-13 20:49:23,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22204 states. [2021-10-13 20:49:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22204 to 17208. [2021-10-13 20:49:24,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17208 states, 17207 states have (on average 3.716394490614285) internal successors, (63948), 17207 states have internal predecessors, (63948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:24,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17208 states to 17208 states and 63948 transitions. [2021-10-13 20:49:24,569 INFO L78 Accepts]: Start accepts. Automaton has 17208 states and 63948 transitions. Word has length 47 [2021-10-13 20:49:24,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:24,569 INFO L470 AbstractCegarLoop]: Abstraction has 17208 states and 63948 transitions. [2021-10-13 20:49:24,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:24,569 INFO L276 IsEmpty]: Start isEmpty. Operand 17208 states and 63948 transitions. [2021-10-13 20:49:24,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:24,609 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:24,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:24,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:24,810 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 [2021-10-13 20:49:24,811 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:24,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:24,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1054274105, now seen corresponding path program 24 times [2021-10-13 20:49:24,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:24,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041766130] [2021-10-13 20:49:24,813 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:49:24,813 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:24,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:24,814 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) [2021-10-13 20:49:24,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-13 20:49:25,293 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:49:25,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:49:25,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-13 20:49:25,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:25,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:25,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:26,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:26,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:26,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041766130] [2021-10-13 20:49:26,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041766130] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:26,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:26,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-10-13 20:49:26,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391813998] [2021-10-13 20:49:26,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-13 20:49:26,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-13 20:49:26,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-10-13 20:49:26,121 INFO L87 Difference]: Start difference. First operand 17208 states and 63948 transitions. Second operand has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:29,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:29,655 INFO L93 Difference]: Finished difference Result 20040 states and 72270 transitions. [2021-10-13 20:49:29,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-13 20:49:29,656 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:29,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:29,956 INFO L225 Difference]: With dead ends: 20040 [2021-10-13 20:49:29,956 INFO L226 Difference]: Without dead ends: 18934 [2021-10-13 20:49:29,956 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1810.5ms TimeCoverageRelationStatistics Valid=255, Invalid=935, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 20:49:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18934 states. [2021-10-13 20:49:30,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18934 to 17000. [2021-10-13 20:49:30,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17000 states, 16999 states have (on average 3.7065709747632214) internal successors, (63008), 16999 states have internal predecessors, (63008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:30,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17000 states to 17000 states and 63008 transitions. [2021-10-13 20:49:30,376 INFO L78 Accepts]: Start accepts. Automaton has 17000 states and 63008 transitions. Word has length 47 [2021-10-13 20:49:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:30,376 INFO L470 AbstractCegarLoop]: Abstraction has 17000 states and 63008 transitions. [2021-10-13 20:49:30,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 18 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:30,376 INFO L276 IsEmpty]: Start isEmpty. Operand 17000 states and 63008 transitions. [2021-10-13 20:49:30,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:30,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:30,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:30,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:30,616 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 [2021-10-13 20:49:30,616 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:30,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:30,618 INFO L82 PathProgramCache]: Analyzing trace with hash -988389863, now seen corresponding path program 25 times [2021-10-13 20:49:30,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:30,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57666800] [2021-10-13 20:49:30,619 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:49:30,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:30,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:30,620 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) [2021-10-13 20:49:30,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-13 20:49:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:49:31,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:49:31,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:31,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:31,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:31,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:31,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57666800] [2021-10-13 20:49:31,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [57666800] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:31,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:31,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:49:31,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613291365] [2021-10-13 20:49:31,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:49:31,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:49:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:49:31,658 INFO L87 Difference]: Start difference. First operand 17000 states and 63008 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:38,215 INFO L93 Difference]: Finished difference Result 20152 states and 73747 transitions. [2021-10-13 20:49:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-13 20:49:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:38,281 INFO L225 Difference]: With dead ends: 20152 [2021-10-13 20:49:38,281 INFO L226 Difference]: Without dead ends: 20038 [2021-10-13 20:49:38,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 2160.6ms TimeCoverageRelationStatistics Valid=263, Invalid=927, Unknown=0, NotChecked=0, Total=1190 [2021-10-13 20:49:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20038 states. [2021-10-13 20:49:38,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20038 to 16932. [2021-10-13 20:49:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16932 states, 16931 states have (on average 3.7048609060303583) internal successors, (62727), 16931 states have internal predecessors, (62727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16932 states to 16932 states and 62727 transitions. [2021-10-13 20:49:38,972 INFO L78 Accepts]: Start accepts. Automaton has 16932 states and 62727 transitions. Word has length 47 [2021-10-13 20:49:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:38,972 INFO L470 AbstractCegarLoop]: Abstraction has 16932 states and 62727 transitions. [2021-10-13 20:49:38,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 16932 states and 62727 transitions. [2021-10-13 20:49:39,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:39,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:39,010 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:39,022 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:39,211 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 [2021-10-13 20:49:39,212 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:39,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:39,214 INFO L82 PathProgramCache]: Analyzing trace with hash -651902787, now seen corresponding path program 26 times [2021-10-13 20:49:39,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:39,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840473869] [2021-10-13 20:49:39,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:49:39,215 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:39,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:39,216 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) [2021-10-13 20:49:39,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-13 20:49:39,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:49:39,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:49:39,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:49:39,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:39,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:40,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:40,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840473869] [2021-10-13 20:49:40,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840473869] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:40,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:40,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:49:40,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056098809] [2021-10-13 20:49:40,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:49:40,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:40,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:49:40,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:49:40,252 INFO L87 Difference]: Start difference. First operand 16932 states and 62727 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:44,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:44,534 INFO L93 Difference]: Finished difference Result 18860 states and 68660 transitions. [2021-10-13 20:49:44,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-13 20:49:44,535 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:44,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:44,594 INFO L225 Difference]: With dead ends: 18860 [2021-10-13 20:49:44,594 INFO L226 Difference]: Without dead ends: 18762 [2021-10-13 20:49:44,595 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1415.1ms TimeCoverageRelationStatistics Valid=235, Invalid=1025, Unknown=0, NotChecked=0, Total=1260 [2021-10-13 20:49:44,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18762 states. [2021-10-13 20:49:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18762 to 16858. [2021-10-13 20:49:45,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16858 states, 16857 states have (on average 3.70914160289494) internal successors, (62525), 16857 states have internal predecessors, (62525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16858 states to 16858 states and 62525 transitions. [2021-10-13 20:49:45,233 INFO L78 Accepts]: Start accepts. Automaton has 16858 states and 62525 transitions. Word has length 47 [2021-10-13 20:49:45,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:45,233 INFO L470 AbstractCegarLoop]: Abstraction has 16858 states and 62525 transitions. [2021-10-13 20:49:45,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:45,233 INFO L276 IsEmpty]: Start isEmpty. Operand 16858 states and 62525 transitions. [2021-10-13 20:49:45,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:45,271 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:45,271 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:45,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:45,472 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 [2021-10-13 20:49:45,472 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:45,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:45,473 INFO L82 PathProgramCache]: Analyzing trace with hash 324825763, now seen corresponding path program 27 times [2021-10-13 20:49:45,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:45,474 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778945447] [2021-10-13 20:49:45,474 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:49:45,474 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:45,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:45,476 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) [2021-10-13 20:49:45,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-13 20:49:45,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:49:45,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:49:46,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:49:46,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:46,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:46,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:46,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778945447] [2021-10-13 20:49:46,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778945447] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:46,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:46,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-10-13 20:49:46,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501056663] [2021-10-13 20:49:46,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-13 20:49:46,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:46,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-13 20:49:46,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-10-13 20:49:46,584 INFO L87 Difference]: Start difference. First operand 16858 states and 62525 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:51,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:51,925 INFO L93 Difference]: Finished difference Result 17304 states and 63068 transitions. [2021-10-13 20:49:51,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-13 20:49:51,926 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:51,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:51,981 INFO L225 Difference]: With dead ends: 17304 [2021-10-13 20:49:51,982 INFO L226 Difference]: Without dead ends: 17190 [2021-10-13 20:49:51,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1664.7ms TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2021-10-13 20:49:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17190 states. [2021-10-13 20:49:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17190 to 15540. [2021-10-13 20:49:52,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15540 states, 15539 states have (on average 3.7044211339211017) internal successors, (57563), 15539 states have internal predecessors, (57563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:52,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15540 states to 15540 states and 57563 transitions. [2021-10-13 20:49:52,373 INFO L78 Accepts]: Start accepts. Automaton has 15540 states and 57563 transitions. Word has length 47 [2021-10-13 20:49:52,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:52,373 INFO L470 AbstractCegarLoop]: Abstraction has 15540 states and 57563 transitions. [2021-10-13 20:49:52,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 13 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:52,374 INFO L276 IsEmpty]: Start isEmpty. Operand 15540 states and 57563 transitions. [2021-10-13 20:49:52,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:52,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:52,412 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:52,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:52,613 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 [2021-10-13 20:49:52,614 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:52,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:52,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1397331705, now seen corresponding path program 28 times [2021-10-13 20:49:52,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:52,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1878768875] [2021-10-13 20:49:52,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:49:52,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:52,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:52,617 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) [2021-10-13 20:49:52,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-13 20:49:53,130 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:49:53,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:49:53,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-13 20:49:53,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:49:53,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:53,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:49:53,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:49:53,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:49:53,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1878768875] [2021-10-13 20:49:53,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1878768875] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:49:53,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:49:53,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-13 20:49:53,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203029433] [2021-10-13 20:49:53,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-13 20:49:53,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:49:53,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-13 20:49:53,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-10-13 20:49:53,891 INFO L87 Difference]: Start difference. First operand 15540 states and 57563 transitions. Second operand has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:58,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:49:58,924 INFO L93 Difference]: Finished difference Result 15184 states and 54325 transitions. [2021-10-13 20:49:58,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-13 20:49:58,925 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 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 47 [2021-10-13 20:49:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:49:58,967 INFO L225 Difference]: With dead ends: 15184 [2021-10-13 20:49:58,967 INFO L226 Difference]: Without dead ends: 14220 [2021-10-13 20:49:58,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1776.6ms TimeCoverageRelationStatistics Valid=239, Invalid=883, Unknown=0, NotChecked=0, Total=1122 [2021-10-13 20:49:58,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14220 states. [2021-10-13 20:49:59,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14220 to 13470. [2021-10-13 20:49:59,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13470 states, 13469 states have (on average 3.661964511099562) internal successors, (49323), 13469 states have internal predecessors, (49323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13470 states to 13470 states and 49323 transitions. [2021-10-13 20:49:59,311 INFO L78 Accepts]: Start accepts. Automaton has 13470 states and 49323 transitions. Word has length 47 [2021-10-13 20:49:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:49:59,312 INFO L470 AbstractCegarLoop]: Abstraction has 13470 states and 49323 transitions. [2021-10-13 20:49:59,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.266666666666667) internal successors, (64), 14 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:49:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 13470 states and 49323 transitions. [2021-10-13 20:49:59,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:49:59,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:49:59,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:49:59,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-13 20:49:59,649 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 [2021-10-13 20:49:59,650 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:49:59,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:49:59,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1666723071, now seen corresponding path program 29 times [2021-10-13 20:49:59,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:49:59,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [976163641] [2021-10-13 20:49:59,651 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:49:59,652 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:49:59,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:49:59,654 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) [2021-10-13 20:49:59,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-13 20:50:00,184 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:50:00,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:50:00,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:50:00,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:50:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:50:00,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:50:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:50:01,189 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:50:01,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [976163641] [2021-10-13 20:50:01,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [976163641] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:50:01,189 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:50:01,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-13 20:50:01,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151781305] [2021-10-13 20:50:01,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 20:50:01,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:50:01,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 20:50:01,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:50:01,191 INFO L87 Difference]: Start difference. First operand 13470 states and 49323 transitions. Second operand has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:50:23,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:50:23,158 INFO L93 Difference]: Finished difference Result 22244 states and 80438 transitions. [2021-10-13 20:50:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-13 20:50:23,158 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 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 47 [2021-10-13 20:50:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:50:23,365 INFO L225 Difference]: With dead ends: 22244 [2021-10-13 20:50:23,365 INFO L226 Difference]: Without dead ends: 21382 [2021-10-13 20:50:23,365 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 10041.6ms TimeCoverageRelationStatistics Valid=796, Invalid=3494, Unknown=0, NotChecked=0, Total=4290 [2021-10-13 20:50:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21382 states. [2021-10-13 20:50:23,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21382 to 14954. [2021-10-13 20:50:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14954 states, 14953 states have (on average 3.645021066006821) internal successors, (54504), 14953 states have internal predecessors, (54504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:50:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14954 states to 14954 states and 54504 transitions. [2021-10-13 20:50:23,763 INFO L78 Accepts]: Start accepts. Automaton has 14954 states and 54504 transitions. Word has length 47 [2021-10-13 20:50:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:50:23,763 INFO L470 AbstractCegarLoop]: Abstraction has 14954 states and 54504 transitions. [2021-10-13 20:50:23,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4285714285714284) internal successors, (72), 20 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:50:23,763 INFO L276 IsEmpty]: Start isEmpty. Operand 14954 states and 54504 transitions. [2021-10-13 20:50:23,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:50:23,798 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:50:23,798 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:50:23,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-13 20:50:23,998 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 [2021-10-13 20:50:24,000 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:50:24,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:50:24,001 INFO L82 PathProgramCache]: Analyzing trace with hash 1699040725, now seen corresponding path program 30 times [2021-10-13 20:50:24,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:50:24,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92684835] [2021-10-13 20:50:24,002 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:50:24,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:50:24,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:50:24,003 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:50:24,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-13 20:50:24,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:50:24,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:50:24,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:50:24,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:50:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:50:24,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:50:25,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:50:25,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:50:25,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92684835] [2021-10-13 20:50:25,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92684835] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:50:25,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:50:25,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 20:50:25,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291553811] [2021-10-13 20:50:25,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 20:50:25,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:50:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 20:50:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:50:25,711 INFO L87 Difference]: Start difference. First operand 14954 states and 54504 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:51:01,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:51:01,294 INFO L93 Difference]: Finished difference Result 23808 states and 85625 transitions. [2021-10-13 20:51:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-13 20:51:01,295 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2021-10-13 20:51:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:51:01,369 INFO L225 Difference]: With dead ends: 23808 [2021-10-13 20:51:01,369 INFO L226 Difference]: Without dead ends: 23218 [2021-10-13 20:51:01,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 19786.5ms TimeCoverageRelationStatistics Valid=993, Invalid=3699, Unknown=0, NotChecked=0, Total=4692 [2021-10-13 20:51:01,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23218 states. [2021-10-13 20:51:01,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23218 to 14798. [2021-10-13 20:51:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14798 states, 14797 states have (on average 3.6406704061634114) internal successors, (53871), 14797 states have internal predecessors, (53871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:51:02,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14798 states to 14798 states and 53871 transitions. [2021-10-13 20:51:02,068 INFO L78 Accepts]: Start accepts. Automaton has 14798 states and 53871 transitions. Word has length 47 [2021-10-13 20:51:02,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:51:02,069 INFO L470 AbstractCegarLoop]: Abstraction has 14798 states and 53871 transitions. [2021-10-13 20:51:02,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:51:02,069 INFO L276 IsEmpty]: Start isEmpty. Operand 14798 states and 53871 transitions. [2021-10-13 20:51:02,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:51:02,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:51:02,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:51:02,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-13 20:51:02,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:51:02,333 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:51:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:51:02,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1572252563, now seen corresponding path program 31 times [2021-10-13 20:51:02,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:51:02,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428917015] [2021-10-13 20:51:02,336 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-13 20:51:02,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:51:02,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:51:02,337 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:51:02,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-13 20:51:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 20:51:02,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:51:02,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:51:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:51:03,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:51:03,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:51:03,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:51:03,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428917015] [2021-10-13 20:51:03,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428917015] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:51:03,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:51:03,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-13 20:51:03,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106515154] [2021-10-13 20:51:03,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 20:51:03,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:51:03,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 20:51:03,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:51:03,924 INFO L87 Difference]: Start difference. First operand 14798 states and 53871 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:51:24,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:51:24,528 INFO L93 Difference]: Finished difference Result 22540 states and 80628 transitions. [2021-10-13 20:51:24,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-13 20:51:24,529 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:51:24,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:51:24,592 INFO L225 Difference]: With dead ends: 22540 [2021-10-13 20:51:24,592 INFO L226 Difference]: Without dead ends: 21396 [2021-10-13 20:51:24,593 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 8745.8ms TimeCoverageRelationStatistics Valid=762, Invalid=4494, Unknown=0, NotChecked=0, Total=5256 [2021-10-13 20:51:24,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21396 states. [2021-10-13 20:51:25,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21396 to 14918. [2021-10-13 20:51:25,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14918 states, 14917 states have (on average 3.635851712810887) internal successors, (54236), 14917 states have internal predecessors, (54236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:51:25,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14918 states to 14918 states and 54236 transitions. [2021-10-13 20:51:25,131 INFO L78 Accepts]: Start accepts. Automaton has 14918 states and 54236 transitions. Word has length 47 [2021-10-13 20:51:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:51:25,131 INFO L470 AbstractCegarLoop]: Abstraction has 14918 states and 54236 transitions. [2021-10-13 20:51:25,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:51:25,132 INFO L276 IsEmpty]: Start isEmpty. Operand 14918 states and 54236 transitions. [2021-10-13 20:51:25,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:51:25,164 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:51:25,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:51:25,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-13 20:51:25,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:51:25,365 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:51:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:51:25,366 INFO L82 PathProgramCache]: Analyzing trace with hash 242673799, now seen corresponding path program 32 times [2021-10-13 20:51:25,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:51:25,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203433469] [2021-10-13 20:51:25,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-13 20:51:25,367 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:51:25,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:51:25,368 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:51:25,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-13 20:51:25,934 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:51:25,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:51:25,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:51:25,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:51:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:51:26,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:51:27,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:51:27,037 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:51:27,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203433469] [2021-10-13 20:51:27,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203433469] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:51:27,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:51:27,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 20:51:27,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735236834] [2021-10-13 20:51:27,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 20:51:27,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:51:27,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 20:51:27,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=425, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:51:27,039 INFO L87 Difference]: Start difference. First operand 14918 states and 54236 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:04,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:52:04,960 INFO L93 Difference]: Finished difference Result 26752 states and 95848 transitions. [2021-10-13 20:52:04,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2021-10-13 20:52:04,961 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2021-10-13 20:52:04,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:52:05,044 INFO L225 Difference]: With dead ends: 26752 [2021-10-13 20:52:05,044 INFO L226 Difference]: Without dead ends: 25790 [2021-10-13 20:52:05,045 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1634 ImplicationChecksByTransitivity, 22238.4ms TimeCoverageRelationStatistics Valid=1155, Invalid=5165, Unknown=0, NotChecked=0, Total=6320 [2021-10-13 20:52:05,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25790 states. [2021-10-13 20:52:05,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25790 to 14776. [2021-10-13 20:52:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14776 states, 14775 states have (on average 3.6343147208121827) internal successors, (53697), 14775 states have internal predecessors, (53697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:05,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14776 states to 14776 states and 53697 transitions. [2021-10-13 20:52:05,659 INFO L78 Accepts]: Start accepts. Automaton has 14776 states and 53697 transitions. Word has length 47 [2021-10-13 20:52:05,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:52:05,660 INFO L470 AbstractCegarLoop]: Abstraction has 14776 states and 53697 transitions. [2021-10-13 20:52:05,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:05,660 INFO L276 IsEmpty]: Start isEmpty. Operand 14776 states and 53697 transitions. [2021-10-13 20:52:05,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:52:05,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:52:05,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:52:05,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-13 20:52:05,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:52:05,894 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:52:05,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:52:05,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1838486893, now seen corresponding path program 33 times [2021-10-13 20:52:05,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:52:05,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107134616] [2021-10-13 20:52:05,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-13 20:52:05,897 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:52:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:52:05,898 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:52:05,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-13 20:52:06,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-13 20:52:06,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:52:06,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:52:06,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:52:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:52:06,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:52:07,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:52:07,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:52:07,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107134616] [2021-10-13 20:52:07,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107134616] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:52:07,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:52:07,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 20:52:07,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057554517] [2021-10-13 20:52:07,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 20:52:07,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:52:07,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 20:52:07,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=433, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:52:07,570 INFO L87 Difference]: Start difference. First operand 14776 states and 53697 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:52:37,399 INFO L93 Difference]: Finished difference Result 23534 states and 83399 transitions. [2021-10-13 20:52:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-10-13 20:52:37,400 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2021-10-13 20:52:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:52:37,467 INFO L225 Difference]: With dead ends: 23534 [2021-10-13 20:52:37,467 INFO L226 Difference]: Without dead ends: 22516 [2021-10-13 20:52:37,468 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1753 ImplicationChecksByTransitivity, 16071.9ms TimeCoverageRelationStatistics Valid=1139, Invalid=5667, Unknown=0, NotChecked=0, Total=6806 [2021-10-13 20:52:37,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22516 states. [2021-10-13 20:52:38,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22516 to 14808. [2021-10-13 20:52:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14808 states, 14807 states have (on average 3.6317282366448302) internal successors, (53775), 14807 states have internal predecessors, (53775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:38,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14808 states to 14808 states and 53775 transitions. [2021-10-13 20:52:38,081 INFO L78 Accepts]: Start accepts. Automaton has 14808 states and 53775 transitions. Word has length 47 [2021-10-13 20:52:38,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:52:38,081 INFO L470 AbstractCegarLoop]: Abstraction has 14808 states and 53775 transitions. [2021-10-13 20:52:38,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:38,081 INFO L276 IsEmpty]: Start isEmpty. Operand 14808 states and 53775 transitions. [2021-10-13 20:52:38,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:52:38,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:52:38,115 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:52:38,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-13 20:52:38,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:52:38,316 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:52:38,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:52:38,317 INFO L82 PathProgramCache]: Analyzing trace with hash -392704193, now seen corresponding path program 34 times [2021-10-13 20:52:38,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:52:38,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484152013] [2021-10-13 20:52:38,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-13 20:52:38,318 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:52:38,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:52:38,319 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:52:38,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-13 20:52:38,918 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-13 20:52:38,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:52:38,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-13 20:52:38,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:52:39,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:52:39,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:52:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:52:39,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:52:39,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484152013] [2021-10-13 20:52:39,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484152013] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:52:39,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:52:39,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 20 [2021-10-13 20:52:39,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690860705] [2021-10-13 20:52:39,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-13 20:52:39,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:52:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-13 20:52:39,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2021-10-13 20:52:39,878 INFO L87 Difference]: Start difference. First operand 14808 states and 53775 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:53,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:52:53,336 INFO L93 Difference]: Finished difference Result 17746 states and 62596 transitions. [2021-10-13 20:52:53,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-13 20:52:53,337 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 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 47 [2021-10-13 20:52:53,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:52:53,389 INFO L225 Difference]: With dead ends: 17746 [2021-10-13 20:52:53,390 INFO L226 Difference]: Without dead ends: 16924 [2021-10-13 20:52:53,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 5098.9ms TimeCoverageRelationStatistics Valid=480, Invalid=2382, Unknown=0, NotChecked=0, Total=2862 [2021-10-13 20:52:53,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16924 states. [2021-10-13 20:52:53,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16924 to 14956. [2021-10-13 20:52:53,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14956 states, 14955 states have (on average 3.623336676696757) internal successors, (54187), 14955 states have internal predecessors, (54187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14956 states to 14956 states and 54187 transitions. [2021-10-13 20:52:53,751 INFO L78 Accepts]: Start accepts. Automaton has 14956 states and 54187 transitions. Word has length 47 [2021-10-13 20:52:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:52:53,751 INFO L470 AbstractCegarLoop]: Abstraction has 14956 states and 54187 transitions. [2021-10-13 20:52:53,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 20 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:52:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 14956 states and 54187 transitions. [2021-10-13 20:52:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:52:53,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:52:53,785 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:52:53,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-13 20:52:53,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:52:53,986 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:52:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:52:53,987 INFO L82 PathProgramCache]: Analyzing trace with hash -1722282957, now seen corresponding path program 35 times [2021-10-13 20:52:53,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:52:53,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117308892] [2021-10-13 20:52:53,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-13 20:52:53,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:52:53,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:52:53,990 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:52:53,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-13 20:52:54,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-13 20:52:54,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:52:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:52:54,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:52:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:52:54,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:52:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:52:55,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:52:55,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117308892] [2021-10-13 20:52:55,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117308892] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:52:55,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:52:55,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 20:52:55,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568332387] [2021-10-13 20:52:55,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 20:52:55,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:52:55,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 20:52:55,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:52:55,864 INFO L87 Difference]: Start difference. First operand 14956 states and 54187 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:53:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 20:53:27,221 INFO L93 Difference]: Finished difference Result 23924 states and 84964 transitions. [2021-10-13 20:53:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-13 20:53:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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 47 [2021-10-13 20:53:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 20:53:27,293 INFO L225 Difference]: With dead ends: 23924 [2021-10-13 20:53:27,293 INFO L226 Difference]: Without dead ends: 23126 [2021-10-13 20:53:27,294 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1142 ImplicationChecksByTransitivity, 16972.7ms TimeCoverageRelationStatistics Valid=1041, Invalid=3929, Unknown=0, NotChecked=0, Total=4970 [2021-10-13 20:53:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23126 states. [2021-10-13 20:53:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23126 to 14620. [2021-10-13 20:53:27,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14620 states, 14619 states have (on average 3.609412408509474) internal successors, (52766), 14619 states have internal predecessors, (52766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:53:27,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14620 states to 14620 states and 52766 transitions. [2021-10-13 20:53:27,847 INFO L78 Accepts]: Start accepts. Automaton has 14620 states and 52766 transitions. Word has length 47 [2021-10-13 20:53:27,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 20:53:27,847 INFO L470 AbstractCegarLoop]: Abstraction has 14620 states and 52766 transitions. [2021-10-13 20:53:27,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 20:53:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 14620 states and 52766 transitions. [2021-10-13 20:53:27,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-13 20:53:27,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 20:53:27,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 20:53:27,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-13 20:53:28,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:53:28,078 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 23 more)] === [2021-10-13 20:53:28,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 20:53:28,079 INFO L82 PathProgramCache]: Analyzing trace with hash 491523647, now seen corresponding path program 36 times [2021-10-13 20:53:28,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 20:53:28,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282192634] [2021-10-13 20:53:28,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-13 20:53:28,081 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 20:53:28,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-13 20:53:28,082 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 20:53:28,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-13 20:53:28,740 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-13 20:53:28,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-13 20:53:28,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-13 20:53:28,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 20:53:29,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:53:29,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 20:53:29,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 20:53:29,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 20:53:29,815 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282192634] [2021-10-13 20:53:29,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282192634] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 20:53:29,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 20:53:29,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-10-13 20:53:29,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471756206] [2021-10-13 20:53:29,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-13 20:53:29,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 20:53:29,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-13 20:53:29,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-10-13 20:53:29,817 INFO L87 Difference]: Start difference. First operand 14620 states and 52766 transitions. Second operand has 23 states, 23 states have (on average 3.217391304347826) internal successors, (74), 22 states have internal predecessors, (74), 0 states have call successors, (0), 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... [2021-10-13 20:53:29,840 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-13 20:53:29,845 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 [2021-10-13 20:53:29,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 20:53:29,986 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:53:30,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-13 20:53:30,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-13 20:53:30,194 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). [2021-10-13 20:53:30,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-13 20:53:30,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-13 20:53:30,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-13 20:53:30,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-13 20:53:30,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-13 20:53:30,197 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12REQUIRES_VIOLATION [2021-10-13 20:53:30,198 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13REQUIRES_VIOLATION [2021-10-13 20:53:30,199 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr14REQUIRES_VIOLATION [2021-10-13 20:53:30,199 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr15REQUIRES_VIOLATION [2021-10-13 20:53:30,199 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr16REQUIRES_VIOLATION [2021-10-13 20:53:30,199 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr17REQUIRES_VIOLATION [2021-10-13 20:53:30,199 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr18REQUIRES_VIOLATION [2021-10-13 20:53:30,199 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr19REQUIRES_VIOLATION [2021-10-13 20:53:30,200 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK [2021-10-13 20:53:30,200 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-13 20:53:30,200 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-13 20:53:30,200 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-13 20:53:30,200 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION [2021-10-13 20:53:30,200 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATION [2021-10-13 20:53:30,205 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-13 20:53:30,205 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 20:53:30,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:53:30 BasicIcfg [2021-10-13 20:53:30,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 20:53:30,210 INFO L168 Benchmark]: Toolchain (without parser) took 780474.15 ms. Allocated memory was 162.5 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 137.6 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. [2021-10-13 20:53:30,210 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 162.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-13 20:53:30,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.20 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 125.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-13 20:53:30,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.15 ms. Allocated memory is still 162.5 MB. Free memory was 125.7 MB in the beginning and 123.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-13 20:53:30,212 INFO L168 Benchmark]: Boogie Preprocessor took 36.94 ms. Allocated memory is still 162.5 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-13 20:53:30,212 INFO L168 Benchmark]: RCFGBuilder took 987.89 ms. Allocated memory is still 162.5 MB. Free memory was 122.1 MB in the beginning and 136.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-10-13 20:53:30,212 INFO L168 Benchmark]: TraceAbstraction took 779011.23 ms. Allocated memory was 162.5 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 135.9 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. [2021-10-13 20:53:30,218 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 162.5 MB. Free memory is still 135.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 348.20 ms. Allocated memory is still 162.5 MB. Free memory was 137.4 MB in the beginning and 125.9 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 74.15 ms. Allocated memory is still 162.5 MB. Free memory was 125.7 MB in the beginning and 123.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.94 ms. Allocated memory is still 162.5 MB. Free memory was 123.8 MB in the beginning and 122.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 987.89 ms. Allocated memory is still 162.5 MB. Free memory was 122.1 MB in the beginning and 136.4 MB in the end (delta: -14.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 779011.23 ms. Allocated memory was 162.5 MB in the beginning and 7.8 GB in the end (delta: 7.7 GB). Free memory was 135.9 MB in the beginning and 5.4 GB in the end (delta: -5.3 GB). Peak memory consumption was 2.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28741.2ms, 217 PlacesBefore, 90 PlacesAfterwards, 208 TransitionsBefore, 78 TransitionsAfterwards, 7588 CoEnabledTransitionPairs, 8 FixpointIterations, 83 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 18 ConcurrentYvCompositions, 3 ChoiceCompositions, 201 TotalNumberOfCompositions, 26073 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11801, positive: 11436, positive conditional: 0, positive unconditional: 11436, negative: 365, negative conditional: 0, negative unconditional: 365, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5454, positive: 5371, positive conditional: 0, positive unconditional: 5371, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5454, positive: 5209, positive conditional: 0, positive unconditional: 5209, negative: 245, negative conditional: 0, negative unconditional: 245, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 245, positive: 162, positive conditional: 0, positive unconditional: 162, negative: 83, negative conditional: 0, negative unconditional: 83, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 538, positive: 116, positive conditional: 0, positive unconditional: 116, negative: 421, negative conditional: 0, negative unconditional: 421, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11801, positive: 6065, positive conditional: 0, positive unconditional: 6065, negative: 282, negative conditional: 0, negative unconditional: 282, unknown: 5454, unknown conditional: 0, unknown unconditional: 5454] , Statistics on independence cache: Total cache size (in pairs): 612, Positive cache size: 572, Positive conditional cache size: 0, Positive unconditional cache size: 572, Negative cache size: 40, Negative conditional cache size: 0, Negative unconditional cache size: 40 - 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: 136]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 125]: 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 (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 127]: 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 (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 124]: 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 (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 128]: 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 (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - TimeoutResultAtElement [Line: 126]: 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 (14620states) and FLOYD_HOARE automaton (currently 3 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructed, input type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 273 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 778730.0ms, OverallIterations: 47, TraceHistogramMax: 1, EmptinessCheckTime: 2235.4ms, AutomataDifference: 593903.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32108.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 6366 SDtfs, 25964 SDslu, 54280 SDs, 0 SdLazy, 58903 SolverSat, 6483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 253960.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4628 GetRequests, 2855 SyntacticMatches, 5 SemanticMatches, 1768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42443 ImplicationChecksByTransitivity, 307769.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=49763occurred in iteration=0, InterpolantAutomatonStates: 1603, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 58812.7ms AutomataMinimizationTime, 46 MinimizatonAttempts, 228642 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 661.5ms SsaConstructionTime, 3580.5ms SatisfiabilityAnalysisTime, 65381.0ms InterpolantComputationTime, 1763 NumberOfCodeBlocks, 1763 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3432 ConstructedInterpolants, 22 QuantifiedInterpolants, 15240 SizeOfPredicates, 362 NumberOfNonLiveVariables, 6919 ConjunctsInSsa, 483 ConjunctsInUnsatCore, 94 InterpolantComputations, 94 PerfectInterpolantSequences, 0/0 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