/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 17:32:08,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 17:32:08,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 17:32:08,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 17:32:08,279 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-08 17:32:08,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-08 17:32:08,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-08 17:32:08,302 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-08 17:32:08,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-08 17:32:08,306 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-08 17:32:08,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-08 17:32:08,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-08 17:32:08,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-08 17:32:08,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-08 17:32:08,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-08 17:32:08,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-08 17:32:08,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-10-08 17:32:08,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 17:32:08,353 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 17:32:08,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 17:32:08,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 17:32:08,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 17:32:08,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 17:32:08,418 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 17:32:08,418 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 17:32:08,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 17:32:08,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 17:32:08,420 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 17:32:08,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 17:32:08,420 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 17:32:08,421 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 17:32:08,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 17:32:08,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 17:32:08,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 17:32:08,421 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 17:32:08,422 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 17:32:08,422 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 17:32:08,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 17:32:08,422 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 17:32:08,423 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 17:32:08,423 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 17:32:08,423 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 17:32:08,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 17:32:08,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 17:32:08,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 17:32:08,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 17:32:08,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:32:08,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 17:32:08,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 17:32:08,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 17:32:08,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 17:32:08,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 17:32:08,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 17:32:08,426 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 17:32:08,806 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 17:32:08,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 17:32:08,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 17:32:08,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 17:32:08,844 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 17:32:08,845 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2021-10-08 17:32:08,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bc0fe79/ed89c1dab6954bb8933c0bfaf37efd50/FLAGae2b38801 [2021-10-08 17:32:09,547 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 17:32:09,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c [2021-10-08 17:32:09,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bc0fe79/ed89c1dab6954bb8933c0bfaf37efd50/FLAGae2b38801 [2021-10-08 17:32:09,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44bc0fe79/ed89c1dab6954bb8933c0bfaf37efd50 [2021-10-08 17:32:09,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 17:32:09,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 17:32:09,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 17:32:09,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 17:32:09,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 17:32:09,906 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:32:09" (1/1) ... [2021-10-08 17:32:09,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58e6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:09, skipping insertion in model container [2021-10-08 17:32:09,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 05:32:09" (1/1) ... [2021-10-08 17:32:09,920 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 17:32:09,941 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 17:32:10,229 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2080,2093] [2021-10-08 17:32:10,233 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:32:10,258 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 17:32:10,296 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20-figure1-alt.wvr.c[2080,2093] [2021-10-08 17:32:10,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 17:32:10,330 INFO L208 MainTranslator]: Completed translation [2021-10-08 17:32:10,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10 WrapperNode [2021-10-08 17:32:10,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 17:32:10,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 17:32:10,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 17:32:10,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 17:32:10,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 17:32:10,412 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 17:32:10,412 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 17:32:10,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 17:32:10,423 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,424 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,436 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,437 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 17:32:10,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 17:32:10,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 17:32:10,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 17:32:10,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (1/1) ... [2021-10-08 17:32:10,493 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 17:32:10,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 17:32:10,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 17:32:10,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 17:32:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 17:32:10,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 17:32:10,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 17:32:10,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 17:32:10,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 17:32:10,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 17:32:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-08 17:32:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-08 17:32:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 17:32:10,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 17:32:10,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 17:32:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 17:32:10,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 17:32:10,613 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 17:32:11,231 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 17:32:11,231 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-08 17:32:11,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:32:11 BoogieIcfgContainer [2021-10-08 17:32:11,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 17:32:11,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 17:32:11,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 17:32:11,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 17:32:11,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 05:32:09" (1/3) ... [2021-10-08 17:32:11,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:32:11, skipping insertion in model container [2021-10-08 17:32:11,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 05:32:10" (2/3) ... [2021-10-08 17:32:11,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419e783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 05:32:11, skipping insertion in model container [2021-10-08 17:32:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 05:32:11" (3/3) ... [2021-10-08 17:32:11,243 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2021-10-08 17:32:11,249 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 17:32:11,250 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 17:32:11,250 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 17:32:11,282 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,282 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,282 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,283 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,283 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,283 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,283 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,284 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,285 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,285 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,285 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,286 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,286 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,287 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,287 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,288 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,288 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,288 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,289 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,289 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,289 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,289 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,290 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,290 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,291 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,291 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,292 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,292 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,292 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,293 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,293 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,293 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,294 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,297 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,298 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,298 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,298 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,299 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,301 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,302 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,302 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,302 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,302 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,303 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,303 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 17:32:11,310 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 17:32:11,362 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 17:32:11,371 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 17:32:11,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 17:32:11,388 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 17:32:11,402 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-08 17:32:11,405 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 91 transitions, 198 flow [2021-10-08 17:32:11,407 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 91 transitions, 198 flow [2021-10-08 17:32:11,460 INFO L129 PetriNetUnfolder]: 6/89 cut-off events. [2021-10-08 17:32:11,460 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 17:32:11,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 89 events. 6/89 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2021-10-08 17:32:11,468 INFO L116 LiptonReduction]: Number of co-enabled transitions 660 [2021-10-08 17:32:19,243 INFO L131 LiptonReduction]: Checked pairs total: 768 [2021-10-08 17:32:19,243 INFO L133 LiptonReduction]: Total number of compositions: 92 [2021-10-08 17:32:19,257 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 17:32:19,272 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:19,274 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:19,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 17:32:19,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:19,281 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 17:32:19,281 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:19,287 INFO L82 PathProgramCache]: Analyzing trace with hash 377, now seen corresponding path program 1 times [2021-10-08 17:32:19,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:19,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143646551] [2021-10-08 17:32:19,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:19,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:19,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:19,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:19,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 17:32:19,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:19,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 17:32:19,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:19,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:19,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:19,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:19,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143646551] [2021-10-08 17:32:19,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143646551] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:19,401 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:19,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 17:32:19,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71137860] [2021-10-08 17:32:19,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 17:32:19,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:19,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 17:32:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 17:32:19,433 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 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) [2021-10-08 17:32:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:19,455 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-08 17:32:19,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 17:32:19,456 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 [2021-10-08 17:32:19,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:19,467 INFO L225 Difference]: With dead ends: 64 [2021-10-08 17:32:19,467 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 17:32:19,468 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 [2021-10-08 17:32:19,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 17:32:19,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-08 17:32:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-08 17:32:19,511 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-08 17:32:19,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:19,512 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-08 17:32:19,512 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) [2021-10-08 17:32:19,513 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-08 17:32:19,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:32:19,513 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:19,513 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:32:19,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:19,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:19,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:19,730 INFO L82 PathProgramCache]: Analyzing trace with hash 369440, now seen corresponding path program 1 times [2021-10-08 17:32:19,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:19,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688127922] [2021-10-08 17:32:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:19,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:19,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:19,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:19,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 17:32:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:19,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:32:19,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:19,941 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 17:32:19,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-08 17:32:20,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:20,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:20,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:20,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:20,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688127922] [2021-10-08 17:32:20,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688127922] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:20,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:20,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:32:20,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109931700] [2021-10-08 17:32:20,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:32:20,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:32:20,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:32:20,028 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:20,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:20,081 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-08 17:32:20,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:32:20,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 [2021-10-08 17:32:20,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:20,083 INFO L225 Difference]: With dead ends: 58 [2021-10-08 17:32:20,083 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 17:32:20,086 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:32:20,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 17:32:20,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 17:32:20,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 17:32:20,096 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-08 17:32:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:20,097 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 17:32:20,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 17:32:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 17:32:20,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:20,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 17:32:20,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:20,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:20,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:20,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:20,300 INFO L82 PathProgramCache]: Analyzing trace with hash 369441, now seen corresponding path program 1 times [2021-10-08 17:32:20,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:20,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971654646] [2021-10-08 17:32:20,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:20,302 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:20,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:20,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:20,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 17:32:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:20,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 17:32:20,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:20,469 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 17:32:20,470 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 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-08 17:32:20,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:20,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:20,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:20,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971654646] [2021-10-08 17:32:20,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971654646] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:20,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:20,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:32:20,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896659967] [2021-10-08 17:32:20,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:32:20,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:32:20,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:32:20,624 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:20,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:20,655 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-08 17:32:20,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:32:20,656 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 [2021-10-08 17:32:20,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:20,657 INFO L225 Difference]: With dead ends: 52 [2021-10-08 17:32:20,657 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 17:32:20,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:32:20,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 17:32:20,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 17:32:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-08 17:32:20,666 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-08 17:32:20,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:20,667 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-08 17:32:20,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-08 17:32:20,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:32:20,668 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:20,668 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:32:20,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:20,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:20,883 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:20,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:20,884 INFO L82 PathProgramCache]: Analyzing trace with hash 355039036, now seen corresponding path program 1 times [2021-10-08 17:32:20,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:20,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604435643] [2021-10-08 17:32:20,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:20,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:20,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:20,887 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:20,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 17:32:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:20,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-08 17:32:20,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:21,082 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 17:32:21,082 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 3 case distinctions, treesize of input 26 treesize of output 48 [2021-10-08 17:32:21,096 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 49 treesize of output 47 [2021-10-08 17:32:21,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:21,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:21,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:21,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:21,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604435643] [2021-10-08 17:32:21,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604435643] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:21,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:21,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 17:32:21,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019515351] [2021-10-08 17:32:21,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 17:32:21,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 17:32:21,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:32:21,388 INFO L87 Difference]: Start difference. First operand 52 states and 127 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) [2021-10-08 17:32:21,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:21,409 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-08 17:32:21,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:32:21,411 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 [2021-10-08 17:32:21,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:21,412 INFO L225 Difference]: With dead ends: 43 [2021-10-08 17:32:21,412 INFO L226 Difference]: Without dead ends: 43 [2021-10-08 17:32:21,412 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 17:32:21,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-08 17:32:21,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-08 17:32:21,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:21,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-08 17:32:21,419 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-08 17:32:21,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:21,420 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-08 17:32:21,420 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) [2021-10-08 17:32:21,420 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-08 17:32:21,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 17:32:21,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:21,421 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 17:32:21,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:21,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:21,622 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:21,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:21,624 INFO L82 PathProgramCache]: Analyzing trace with hash 355039038, now seen corresponding path program 1 times [2021-10-08 17:32:21,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:21,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [906925437] [2021-10-08 17:32:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:21,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:21,627 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:21,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 17:32:21,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:21,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 17:32:21,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:21,710 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-08 17:32:21,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-08 17:32:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:21,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:21,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:21,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:21,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [906925437] [2021-10-08 17:32:21,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [906925437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:21,780 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:21,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 17:32:21,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419718845] [2021-10-08 17:32:21,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 17:32:21,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 17:32:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:32:21,783 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:21,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:21,804 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-08 17:32:21,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 17:32:21,805 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 17:32:21,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:21,806 INFO L225 Difference]: With dead ends: 34 [2021-10-08 17:32:21,806 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 17:32:21,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 17:32:21,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 17:32:21,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 17:32:21,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:21,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 17:32:21,816 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-08 17:32:21,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:21,817 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 17:32:21,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:21,817 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 17:32:21,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:32:21,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:21,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:21,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:22,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:22,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:22,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:22,036 INFO L82 PathProgramCache]: Analyzing trace with hash 632455030, now seen corresponding path program 1 times [2021-10-08 17:32:22,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:22,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927938290] [2021-10-08 17:32:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:22,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:22,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:22,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 17:32:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:22,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:32:22,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:22,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:22,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:22,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:22,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927938290] [2021-10-08 17:32:22,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927938290] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:22,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:22,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 17:32:22,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101737013] [2021-10-08 17:32:22,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:32:22,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:32:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:32:22,756 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:23,096 INFO L93 Difference]: Finished difference Result 100 states and 195 transitions. [2021-10-08 17:32:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:32:23,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 17:32:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:23,098 INFO L225 Difference]: With dead ends: 100 [2021-10-08 17:32:23,098 INFO L226 Difference]: Without dead ends: 80 [2021-10-08 17:32:23,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 358.3ms TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:32:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-08 17:32:23,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 58. [2021-10-08 17:32:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.1578947368421053) internal successors, (123), 57 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 123 transitions. [2021-10-08 17:32:23,107 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 123 transitions. Word has length 13 [2021-10-08 17:32:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:23,108 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 123 transitions. [2021-10-08 17:32:23,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 123 transitions. [2021-10-08 17:32:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:32:23,110 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:23,110 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:23,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:23,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:23,330 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:23,331 INFO L82 PathProgramCache]: Analyzing trace with hash -207847184, now seen corresponding path program 2 times [2021-10-08 17:32:23,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:23,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565908773] [2021-10-08 17:32:23,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:32:23,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:23,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:23,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:23,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 17:32:23,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:32:23,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:23,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:32:23,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:23,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:24,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:24,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565908773] [2021-10-08 17:32:24,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565908773] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:24,080 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:24,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 17:32:24,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176687114] [2021-10-08 17:32:24,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:32:24,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:24,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:32:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:32:24,085 INFO L87 Difference]: Start difference. First operand 58 states and 123 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:24,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:24,561 INFO L93 Difference]: Finished difference Result 118 states and 225 transitions. [2021-10-08 17:32:24,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:32:24,562 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 17:32:24,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:24,563 INFO L225 Difference]: With dead ends: 118 [2021-10-08 17:32:24,563 INFO L226 Difference]: Without dead ends: 104 [2021-10-08 17:32:24,564 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 449.4ms TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:32:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-08 17:32:24,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 62. [2021-10-08 17:32:24,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.2459016393442623) internal successors, (137), 61 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:24,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 137 transitions. [2021-10-08 17:32:24,572 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 137 transitions. Word has length 13 [2021-10-08 17:32:24,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:24,573 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 137 transitions. [2021-10-08 17:32:24,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:24,573 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 137 transitions. [2021-10-08 17:32:24,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:32:24,574 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:24,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:24,586 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-08 17:32:24,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:24,787 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:24,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:24,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1509901876, now seen corresponding path program 3 times [2021-10-08 17:32:24,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:24,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214731213] [2021-10-08 17:32:24,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:32:24,789 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:24,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:24,791 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:24,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 17:32:24,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 17:32:24,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:24,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:32:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:25,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:25,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:25,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:25,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:25,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214731213] [2021-10-08 17:32:25,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214731213] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:25,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:25,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 17:32:25,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959458975] [2021-10-08 17:32:25,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:32:25,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:25,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:32:25,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:32:25,520 INFO L87 Difference]: Start difference. First operand 62 states and 137 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:25,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:25,916 INFO L93 Difference]: Finished difference Result 98 states and 195 transitions. [2021-10-08 17:32:25,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 17:32:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 17:32:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:25,918 INFO L225 Difference]: With dead ends: 98 [2021-10-08 17:32:25,918 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 17:32:25,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 429.4ms TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2021-10-08 17:32:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 17:32:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 66. [2021-10-08 17:32:25,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 2.2) internal successors, (143), 65 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:25,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 143 transitions. [2021-10-08 17:32:25,926 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 143 transitions. Word has length 13 [2021-10-08 17:32:25,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:25,926 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 143 transitions. [2021-10-08 17:32:25,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:25,927 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 143 transitions. [2021-10-08 17:32:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:32:25,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:25,928 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:25,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:26,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:26,141 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:26,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:26,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1341146870, now seen corresponding path program 4 times [2021-10-08 17:32:26,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:26,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319022621] [2021-10-08 17:32:26,143 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:32:26,143 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:26,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:26,144 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:26,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 17:32:26,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:32:26,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:26,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:32:26,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:26,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:26,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:26,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:26,838 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:26,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319022621] [2021-10-08 17:32:26,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319022621] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:26,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:26,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 17:32:26,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905501971] [2021-10-08 17:32:26,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:32:26,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:32:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:32:26,840 INFO L87 Difference]: Start difference. First operand 66 states and 143 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:27,168 INFO L93 Difference]: Finished difference Result 98 states and 191 transitions. [2021-10-08 17:32:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:32:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 17:32:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:27,170 INFO L225 Difference]: With dead ends: 98 [2021-10-08 17:32:27,170 INFO L226 Difference]: Without dead ends: 84 [2021-10-08 17:32:27,171 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 355.5ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:27,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-08 17:32:27,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 64. [2021-10-08 17:32:27,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.2698412698412698) internal successors, (143), 63 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 143 transitions. [2021-10-08 17:32:27,187 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 143 transitions. Word has length 13 [2021-10-08 17:32:27,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:27,188 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 143 transitions. [2021-10-08 17:32:27,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 143 transitions. [2021-10-08 17:32:27,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:32:27,193 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:27,193 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:27,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:27,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:27,406 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:27,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:27,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1236071366, now seen corresponding path program 5 times [2021-10-08 17:32:27,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:27,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263921245] [2021-10-08 17:32:27,409 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:32:27,409 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:27,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:27,410 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:27,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 17:32:27,523 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 17:32:27,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:27,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:32:27,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:27,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:28,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:28,104 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:28,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263921245] [2021-10-08 17:32:28,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263921245] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:28,105 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:28,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 17:32:28,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932980365] [2021-10-08 17:32:28,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:32:28,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:28,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:32:28,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:32:28,107 INFO L87 Difference]: Start difference. First operand 64 states and 143 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:28,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:28,449 INFO L93 Difference]: Finished difference Result 98 states and 188 transitions. [2021-10-08 17:32:28,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 17:32:28,450 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 17:32:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:28,451 INFO L225 Difference]: With dead ends: 98 [2021-10-08 17:32:28,451 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 17:32:28,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 372.3ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:28,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 17:32:28,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 60. [2021-10-08 17:32:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 59 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:28,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2021-10-08 17:32:28,463 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 13 [2021-10-08 17:32:28,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:28,464 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2021-10-08 17:32:28,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2021-10-08 17:32:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 17:32:28,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:28,467 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:28,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:28,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:28,669 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:28,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1034904180, now seen corresponding path program 6 times [2021-10-08 17:32:28,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:28,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660668491] [2021-10-08 17:32:28,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:32:28,672 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:28,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:28,673 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:28,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 17:32:28,805 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-08 17:32:28,806 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:28,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-08 17:32:28,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:29,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:29,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:29,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:29,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660668491] [2021-10-08 17:32:29,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660668491] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 17:32:29,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 17:32:29,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 17:32:29,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539930713] [2021-10-08 17:32:29,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 17:32:29,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 17:32:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-08 17:32:29,377 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:29,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:29,644 INFO L93 Difference]: Finished difference Result 74 states and 147 transitions. [2021-10-08 17:32:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 17:32:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 17:32:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:29,646 INFO L225 Difference]: With dead ends: 74 [2021-10-08 17:32:29,646 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 17:32:29,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 308.9ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 17:32:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-10-08 17:32:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 59 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2021-10-08 17:32:29,651 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 13 [2021-10-08 17:32:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:29,651 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2021-10-08 17:32:29,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2021-10-08 17:32:29,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:29,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:29,653 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:29,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:29,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:29,854 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:29,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:29,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1840085898, now seen corresponding path program 1 times [2021-10-08 17:32:29,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:29,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [453898499] [2021-10-08 17:32:29,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:29,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:29,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:29,858 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:29,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 17:32:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:30,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:30,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:30,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:31,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:31,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [453898499] [2021-10-08 17:32:31,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [453898499] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:31,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:31,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:31,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010785316] [2021-10-08 17:32:31,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:31,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:31,146 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:33,772 INFO L93 Difference]: Finished difference Result 204 states and 420 transitions. [2021-10-08 17:32:33,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 17:32:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:33,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:33,775 INFO L225 Difference]: With dead ends: 204 [2021-10-08 17:32:33,775 INFO L226 Difference]: Without dead ends: 189 [2021-10-08 17:32:33,776 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2772.9ms TimeCoverageRelationStatistics Valid=264, Invalid=792, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:32:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-10-08 17:32:33,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 102. [2021-10-08 17:32:33,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.2475247524752477) internal successors, (227), 101 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:33,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 227 transitions. [2021-10-08 17:32:33,784 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 227 transitions. Word has length 15 [2021-10-08 17:32:33,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:33,788 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 227 transitions. [2021-10-08 17:32:33,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:33,789 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 227 transitions. [2021-10-08 17:32:33,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:33,791 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:33,792 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:33,805 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:34,004 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:34,006 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:34,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:34,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1614579184, now seen corresponding path program 2 times [2021-10-08 17:32:34,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:34,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823588468] [2021-10-08 17:32:34,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:32:34,008 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:34,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:34,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:34,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 17:32:34,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:32:34,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:34,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:34,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:34,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:35,205 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:35,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823588468] [2021-10-08 17:32:35,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823588468] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:35,205 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:35,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:35,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936232457] [2021-10-08 17:32:35,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:35,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:35,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:35,207 INFO L87 Difference]: Start difference. First operand 102 states and 227 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:38,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:38,088 INFO L93 Difference]: Finished difference Result 263 states and 535 transitions. [2021-10-08 17:32:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:32:38,090 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:38,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:38,092 INFO L225 Difference]: With dead ends: 263 [2021-10-08 17:32:38,092 INFO L226 Difference]: Without dead ends: 248 [2021-10-08 17:32:38,094 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 2799.6ms TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:32:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-08 17:32:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 106. [2021-10-08 17:32:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.3333333333333335) internal successors, (245), 105 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:38,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 245 transitions. [2021-10-08 17:32:38,101 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 245 transitions. Word has length 15 [2021-10-08 17:32:38,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:38,102 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 245 transitions. [2021-10-08 17:32:38,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:38,102 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 245 transitions. [2021-10-08 17:32:38,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:38,103 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:38,103 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:38,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:38,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:38,314 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:38,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:38,315 INFO L82 PathProgramCache]: Analyzing trace with hash -962639052, now seen corresponding path program 3 times [2021-10-08 17:32:38,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:38,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424830980] [2021-10-08 17:32:38,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:32:38,316 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:38,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:38,317 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:38,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 17:32:38,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:32:38,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:38,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:38,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:38,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:39,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:39,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424830980] [2021-10-08 17:32:39,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424830980] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:39,409 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:39,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:39,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038698822] [2021-10-08 17:32:39,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:39,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:39,411 INFO L87 Difference]: Start difference. First operand 106 states and 245 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:41,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:41,843 INFO L93 Difference]: Finished difference Result 229 states and 480 transitions. [2021-10-08 17:32:41,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-08 17:32:41,844 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:41,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:41,846 INFO L225 Difference]: With dead ends: 229 [2021-10-08 17:32:41,846 INFO L226 Difference]: Without dead ends: 214 [2021-10-08 17:32:41,847 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 2385.8ms TimeCoverageRelationStatistics Valid=372, Invalid=1110, Unknown=0, NotChecked=0, Total=1482 [2021-10-08 17:32:41,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-08 17:32:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 106. [2021-10-08 17:32:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.3333333333333335) internal successors, (245), 105 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 245 transitions. [2021-10-08 17:32:41,854 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 245 transitions. Word has length 15 [2021-10-08 17:32:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:41,855 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 245 transitions. [2021-10-08 17:32:41,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 245 transitions. [2021-10-08 17:32:41,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:41,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:41,856 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:41,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:42,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:42,069 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:42,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:42,070 INFO L82 PathProgramCache]: Analyzing trace with hash -937488463, now seen corresponding path program 1 times [2021-10-08 17:32:42,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:42,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823515705] [2021-10-08 17:32:42,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 17:32:42,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:42,073 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:42,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 17:32:42,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:32:42,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:42,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:42,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:43,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:43,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823515705] [2021-10-08 17:32:43,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823515705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:43,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:43,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:43,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9230013] [2021-10-08 17:32:43,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:43,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:43,195 INFO L87 Difference]: Start difference. First operand 106 states and 245 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:45,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:45,548 INFO L93 Difference]: Finished difference Result 264 states and 520 transitions. [2021-10-08 17:32:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:32:45,550 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:45,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:45,554 INFO L225 Difference]: With dead ends: 264 [2021-10-08 17:32:45,554 INFO L226 Difference]: Without dead ends: 240 [2021-10-08 17:32:45,555 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2319.7ms TimeCoverageRelationStatistics Valid=267, Invalid=1065, Unknown=0, NotChecked=0, Total=1332 [2021-10-08 17:32:45,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-08 17:32:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 100. [2021-10-08 17:32:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.3434343434343434) internal successors, (232), 99 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:45,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 232 transitions. [2021-10-08 17:32:45,562 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 232 transitions. Word has length 15 [2021-10-08 17:32:45,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:45,563 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 232 transitions. [2021-10-08 17:32:45,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:45,563 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 232 transitions. [2021-10-08 17:32:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:45,564 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:45,564 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:45,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:45,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:45,776 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:45,777 INFO L82 PathProgramCache]: Analyzing trace with hash 360100854, now seen corresponding path program 4 times [2021-10-08 17:32:45,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:45,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [570186643] [2021-10-08 17:32:45,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:32:45,778 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:45,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:45,780 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:45,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 17:32:45,964 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:32:45,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:45,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:45,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:46,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:46,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:47,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:47,029 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:47,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [570186643] [2021-10-08 17:32:47,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [570186643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:47,030 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:47,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:47,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422933437] [2021-10-08 17:32:47,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:47,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:47,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:47,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:47,032 INFO L87 Difference]: Start difference. First operand 100 states and 232 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:50,653 INFO L93 Difference]: Finished difference Result 278 states and 565 transitions. [2021-10-08 17:32:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-08 17:32:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:50,656 INFO L225 Difference]: With dead ends: 278 [2021-10-08 17:32:50,656 INFO L226 Difference]: Without dead ends: 254 [2021-10-08 17:32:50,657 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 3523.2ms TimeCoverageRelationStatistics Valid=346, Invalid=1060, Unknown=0, NotChecked=0, Total=1406 [2021-10-08 17:32:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-10-08 17:32:50,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 112. [2021-10-08 17:32:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5405405405405403) internal successors, (282), 111 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:50,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 282 transitions. [2021-10-08 17:32:50,668 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 282 transitions. Word has length 15 [2021-10-08 17:32:50,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:50,669 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 282 transitions. [2021-10-08 17:32:50,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:50,669 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 282 transitions. [2021-10-08 17:32:50,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:50,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:50,671 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:50,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:50,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:50,885 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:50,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:50,886 INFO L82 PathProgramCache]: Analyzing trace with hash 2077849914, now seen corresponding path program 5 times [2021-10-08 17:32:50,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:50,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258083752] [2021-10-08 17:32:50,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:32:50,887 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:50,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:50,889 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:50,890 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 17:32:51,091 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:32:51,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:51,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:51,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:51,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:52,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:52,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258083752] [2021-10-08 17:32:52,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258083752] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:52,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:52,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:52,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287819143] [2021-10-08 17:32:52,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:52,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:52,117 INFO L87 Difference]: Start difference. First operand 112 states and 282 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:55,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:55,532 INFO L93 Difference]: Finished difference Result 276 states and 558 transitions. [2021-10-08 17:32:55,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:32:55,533 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:55,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:55,535 INFO L225 Difference]: With dead ends: 276 [2021-10-08 17:32:55,536 INFO L226 Difference]: Without dead ends: 256 [2021-10-08 17:32:55,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 3400.0ms TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 17:32:55,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-08 17:32:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 108. [2021-10-08 17:32:55,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.467289719626168) internal successors, (264), 107 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 264 transitions. [2021-10-08 17:32:55,544 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 264 transitions. Word has length 15 [2021-10-08 17:32:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:55,544 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 264 transitions. [2021-10-08 17:32:55,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 264 transitions. [2021-10-08 17:32:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:55,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:55,545 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:55,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:55,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:55,758 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:55,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:55,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1217053321, now seen corresponding path program 2 times [2021-10-08 17:32:55,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:55,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1901955361] [2021-10-08 17:32:55,760 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:32:55,760 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:55,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:55,762 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:55,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 17:32:56,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:32:56,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:56,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:56,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:32:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:56,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:32:56,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:32:56,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:32:56,977 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1901955361] [2021-10-08 17:32:56,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1901955361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:32:56,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:32:56,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:32:56,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518378995] [2021-10-08 17:32:56,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:32:56,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:32:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:32:56,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:32:56,980 INFO L87 Difference]: Start difference. First operand 108 states and 264 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:59,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:32:59,436 INFO L93 Difference]: Finished difference Result 298 states and 601 transitions. [2021-10-08 17:32:59,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:32:59,438 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:32:59,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:32:59,440 INFO L225 Difference]: With dead ends: 298 [2021-10-08 17:32:59,441 INFO L226 Difference]: Without dead ends: 280 [2021-10-08 17:32:59,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2343.7ms TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 17:32:59,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-10-08 17:32:59,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 110. [2021-10-08 17:32:59,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 2.4862385321100917) internal successors, (271), 109 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:59,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 271 transitions. [2021-10-08 17:32:59,449 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 271 transitions. Word has length 15 [2021-10-08 17:32:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:32:59,449 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 271 transitions. [2021-10-08 17:32:59,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:32:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 271 transitions. [2021-10-08 17:32:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:32:59,450 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:32:59,450 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:32:59,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 17:32:59,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:32:59,664 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:32:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:32:59,665 INFO L82 PathProgramCache]: Analyzing trace with hash -451201996, now seen corresponding path program 6 times [2021-10-08 17:32:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:32:59,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699918051] [2021-10-08 17:32:59,666 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:32:59,667 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:32:59,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:32:59,668 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:32:59,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 17:32:59,934 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:32:59,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:32:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:32:59,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:00,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:00,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:00,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:00,871 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699918051] [2021-10-08 17:33:00,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699918051] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:00,871 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:00,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:00,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014709149] [2021-10-08 17:33:00,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:00,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:00,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:00,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:00,873 INFO L87 Difference]: Start difference. First operand 110 states and 271 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:02,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:02,916 INFO L93 Difference]: Finished difference Result 197 states and 426 transitions. [2021-10-08 17:33:02,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:33:02,917 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:02,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:02,919 INFO L225 Difference]: With dead ends: 197 [2021-10-08 17:33:02,919 INFO L226 Difference]: Without dead ends: 182 [2021-10-08 17:33:02,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2021.2ms TimeCoverageRelationStatistics Valid=256, Invalid=800, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:33:02,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-08 17:33:02,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 114. [2021-10-08 17:33:02,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.4513274336283186) internal successors, (277), 113 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 277 transitions. [2021-10-08 17:33:02,925 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 277 transitions. Word has length 15 [2021-10-08 17:33:02,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:02,925 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 277 transitions. [2021-10-08 17:33:02,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:02,926 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 277 transitions. [2021-10-08 17:33:02,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:02,927 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:02,927 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:02,940 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-10-08 17:33:03,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:03,140 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:03,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:03,141 INFO L82 PathProgramCache]: Analyzing trace with hash 125978288, now seen corresponding path program 7 times [2021-10-08 17:33:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:03,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270007869] [2021-10-08 17:33:03,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:33:03,142 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:03,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:03,143 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:03,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 17:33:03,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:03,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:03,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:03,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:03,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:04,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:04,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270007869] [2021-10-08 17:33:04,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270007869] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:04,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:04,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:04,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634287445] [2021-10-08 17:33:04,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:04,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:04,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:04,449 INFO L87 Difference]: Start difference. First operand 114 states and 277 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:07,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:07,419 INFO L93 Difference]: Finished difference Result 280 states and 572 transitions. [2021-10-08 17:33:07,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:33:07,422 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:07,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:07,423 INFO L225 Difference]: With dead ends: 280 [2021-10-08 17:33:07,423 INFO L226 Difference]: Without dead ends: 256 [2021-10-08 17:33:07,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 2859.8ms TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2021-10-08 17:33:07,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-10-08 17:33:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 128. [2021-10-08 17:33:07,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.6141732283464565) internal successors, (332), 127 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 332 transitions. [2021-10-08 17:33:07,431 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 332 transitions. Word has length 15 [2021-10-08 17:33:07,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:07,431 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 332 transitions. [2021-10-08 17:33:07,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 332 transitions. [2021-10-08 17:33:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:07,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:07,433 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:07,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:07,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:07,646 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:07,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:07,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1843727348, now seen corresponding path program 8 times [2021-10-08 17:33:07,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:07,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594389386] [2021-10-08 17:33:07,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:33:07,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:07,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:07,651 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:07,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 17:33:07,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:07,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:07,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:07,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:08,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:08,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:08,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:08,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:08,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1594389386] [2021-10-08 17:33:08,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1594389386] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:08,979 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:08,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:08,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691934533] [2021-10-08 17:33:08,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:08,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:08,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:08,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:08,981 INFO L87 Difference]: Start difference. First operand 128 states and 332 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:11,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:11,891 INFO L93 Difference]: Finished difference Result 278 states and 565 transitions. [2021-10-08 17:33:11,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:33:11,893 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:11,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:11,894 INFO L225 Difference]: With dead ends: 278 [2021-10-08 17:33:11,895 INFO L226 Difference]: Without dead ends: 258 [2021-10-08 17:33:11,895 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 2770.7ms TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2021-10-08 17:33:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-10-08 17:33:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 124. [2021-10-08 17:33:11,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.5528455284552845) internal successors, (314), 123 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 314 transitions. [2021-10-08 17:33:11,902 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 314 transitions. Word has length 15 [2021-10-08 17:33:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:11,902 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 314 transitions. [2021-10-08 17:33:11,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 314 transitions. [2021-10-08 17:33:11,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:11,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:11,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:11,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:12,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:12,116 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1451175887, now seen corresponding path program 3 times [2021-10-08 17:33:12,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:12,118 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129652469] [2021-10-08 17:33:12,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:12,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:12,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:12,120 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:12,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 17:33:12,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:33:12,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:12,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:12,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:12,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:13,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:13,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129652469] [2021-10-08 17:33:13,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129652469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:13,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:13,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:13,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114871424] [2021-10-08 17:33:13,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:13,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:13,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:13,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:13,387 INFO L87 Difference]: Start difference. First operand 124 states and 314 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:15,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:15,943 INFO L93 Difference]: Finished difference Result 266 states and 563 transitions. [2021-10-08 17:33:15,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:33:15,944 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:15,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:15,946 INFO L225 Difference]: With dead ends: 266 [2021-10-08 17:33:15,946 INFO L226 Difference]: Without dead ends: 248 [2021-10-08 17:33:15,947 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 2442.8ms TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 17:33:15,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-10-08 17:33:15,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 128. [2021-10-08 17:33:15,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.5984251968503935) internal successors, (330), 127 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 330 transitions. [2021-10-08 17:33:15,955 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 330 transitions. Word has length 15 [2021-10-08 17:33:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:15,956 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 330 transitions. [2021-10-08 17:33:15,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 330 transitions. [2021-10-08 17:33:15,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:15,957 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:15,957 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:15,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:16,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:16,170 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:16,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:16,171 INFO L82 PathProgramCache]: Analyzing trace with hash -685324562, now seen corresponding path program 9 times [2021-10-08 17:33:16,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:16,172 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996994599] [2021-10-08 17:33:16,172 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:16,172 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:16,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:16,173 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:16,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 17:33:16,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:33:16,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:16,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:16,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:16,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:16,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:17,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:17,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:17,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996994599] [2021-10-08 17:33:17,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996994599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:17,543 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:17,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:17,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41650052] [2021-10-08 17:33:17,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:17,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:17,545 INFO L87 Difference]: Start difference. First operand 128 states and 330 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:19,879 INFO L93 Difference]: Finished difference Result 207 states and 456 transitions. [2021-10-08 17:33:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 17:33:19,880 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:19,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:19,882 INFO L225 Difference]: With dead ends: 207 [2021-10-08 17:33:19,882 INFO L226 Difference]: Without dead ends: 192 [2021-10-08 17:33:19,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 2219.6ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-10-08 17:33:19,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-08 17:33:19,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 126. [2021-10-08 17:33:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.568) internal successors, (321), 125 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 321 transitions. [2021-10-08 17:33:19,888 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 321 transitions. Word has length 15 [2021-10-08 17:33:19,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:19,888 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 321 transitions. [2021-10-08 17:33:19,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:19,889 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 321 transitions. [2021-10-08 17:33:19,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:19,889 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:19,889 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:19,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-10-08 17:33:20,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:20,103 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:20,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:20,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1776522444, now seen corresponding path program 10 times [2021-10-08 17:33:20,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:20,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570224060] [2021-10-08 17:33:20,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:33:20,105 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:20,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:20,107 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:20,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 17:33:20,421 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:33:20,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:20,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:20,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:20,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:20,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:21,494 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:21,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:21,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570224060] [2021-10-08 17:33:21,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570224060] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:21,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:21,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:21,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238447090] [2021-10-08 17:33:21,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:21,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:21,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:21,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:21,497 INFO L87 Difference]: Start difference. First operand 126 states and 321 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:22,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:22,560 INFO L93 Difference]: Finished difference Result 177 states and 398 transitions. [2021-10-08 17:33:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 17:33:22,561 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:22,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:22,562 INFO L225 Difference]: With dead ends: 177 [2021-10-08 17:33:22,562 INFO L226 Difference]: Without dead ends: 162 [2021-10-08 17:33:22,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1255.3ms TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:33:22,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-08 17:33:22,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 130. [2021-10-08 17:33:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.5348837209302326) internal successors, (327), 129 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:22,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 327 transitions. [2021-10-08 17:33:22,569 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 327 transitions. Word has length 15 [2021-10-08 17:33:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:22,569 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 327 transitions. [2021-10-08 17:33:22,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 327 transitions. [2021-10-08 17:33:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:22,570 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:22,570 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:22,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:22,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:22,791 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:22,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:22,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1644387530, now seen corresponding path program 11 times [2021-10-08 17:33:22,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:22,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [278947758] [2021-10-08 17:33:22,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:33:22,793 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:22,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:22,800 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:22,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 17:33:23,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:23,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:23,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:23,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:23,421 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:23,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:24,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:24,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [278947758] [2021-10-08 17:33:24,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [278947758] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:24,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:24,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:24,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579212390] [2021-10-08 17:33:24,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:24,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:24,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:24,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:24,050 INFO L87 Difference]: Start difference. First operand 130 states and 327 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:27,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:27,230 INFO L93 Difference]: Finished difference Result 266 states and 560 transitions. [2021-10-08 17:33:27,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:33:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:27,232 INFO L225 Difference]: With dead ends: 266 [2021-10-08 17:33:27,232 INFO L226 Difference]: Without dead ends: 237 [2021-10-08 17:33:27,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3144.8ms TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 17:33:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-10-08 17:33:27,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 138. [2021-10-08 17:33:27,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 137 states have (on average 2.6350364963503647) internal successors, (361), 137 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:27,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 361 transitions. [2021-10-08 17:33:27,239 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 361 transitions. Word has length 15 [2021-10-08 17:33:27,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:27,240 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 361 transitions. [2021-10-08 17:33:27,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:27,240 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 361 transitions. [2021-10-08 17:33:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:27,241 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:27,241 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:27,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:27,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:27,450 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:27,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:27,450 INFO L82 PathProgramCache]: Analyzing trace with hash 73361530, now seen corresponding path program 12 times [2021-10-08 17:33:27,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:27,451 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684123860] [2021-10-08 17:33:27,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:33:27,451 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:27,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:27,453 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:27,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 17:33:27,799 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 17:33:27,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:27,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:27,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:28,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:28,750 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:28,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:28,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684123860] [2021-10-08 17:33:28,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684123860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:28,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:28,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:28,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080008527] [2021-10-08 17:33:28,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:28,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:28,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:28,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:28,753 INFO L87 Difference]: Start difference. First operand 138 states and 361 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:31,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:31,542 INFO L93 Difference]: Finished difference Result 263 states and 551 transitions. [2021-10-08 17:33:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-08 17:33:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:31,544 INFO L225 Difference]: With dead ends: 263 [2021-10-08 17:33:31,545 INFO L226 Difference]: Without dead ends: 238 [2021-10-08 17:33:31,545 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2838.2ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 17:33:31,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-08 17:33:31,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 132. [2021-10-08 17:33:31,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.549618320610687) internal successors, (334), 131 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:31,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 334 transitions. [2021-10-08 17:33:31,551 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 334 transitions. Word has length 15 [2021-10-08 17:33:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:31,552 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 334 transitions. [2021-10-08 17:33:31,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:31,552 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 334 transitions. [2021-10-08 17:33:31,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:31,553 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:31,553 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:31,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 17:33:31,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:31,767 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:31,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:31,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1073425591, now seen corresponding path program 4 times [2021-10-08 17:33:31,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:31,769 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [565603641] [2021-10-08 17:33:31,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:33:31,769 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:31,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:31,771 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:31,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 17:33:32,127 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:33:32,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:32,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:32,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:32,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:32,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:33,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:33,085 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:33,085 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [565603641] [2021-10-08 17:33:33,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [565603641] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:33,085 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:33,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:33,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284695639] [2021-10-08 17:33:33,086 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:33,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:33,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:33,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:33,087 INFO L87 Difference]: Start difference. First operand 132 states and 334 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:35,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:35,257 INFO L93 Difference]: Finished difference Result 240 states and 540 transitions. [2021-10-08 17:33:35,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 17:33:35,258 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:35,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:35,259 INFO L225 Difference]: With dead ends: 240 [2021-10-08 17:33:35,259 INFO L226 Difference]: Without dead ends: 222 [2021-10-08 17:33:35,260 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 2225.1ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 17:33:35,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-10-08 17:33:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 128. [2021-10-08 17:33:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 2.645669291338583) internal successors, (336), 127 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 336 transitions. [2021-10-08 17:33:35,265 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 336 transitions. Word has length 15 [2021-10-08 17:33:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:35,266 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 336 transitions. [2021-10-08 17:33:35,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 336 transitions. [2021-10-08 17:33:35,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:35,267 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:35,267 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:35,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2021-10-08 17:33:35,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:35,480 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:35,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1839276916, now seen corresponding path program 13 times [2021-10-08 17:33:35,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:35,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926393244] [2021-10-08 17:33:35,481 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:33:35,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:35,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:35,483 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:35,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 17:33:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:33:35,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:35,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:36,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:36,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:36,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:36,862 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:36,862 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926393244] [2021-10-08 17:33:36,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926393244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:36,862 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:36,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:36,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733503162] [2021-10-08 17:33:36,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:36,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:36,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:36,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:36,864 INFO L87 Difference]: Start difference. First operand 128 states and 336 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:38,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:38,676 INFO L93 Difference]: Finished difference Result 217 states and 479 transitions. [2021-10-08 17:33:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-08 17:33:38,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:38,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:38,678 INFO L225 Difference]: With dead ends: 217 [2021-10-08 17:33:38,678 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 17:33:38,679 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1803.3ms TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2021-10-08 17:33:38,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 17:33:38,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 118. [2021-10-08 17:33:38,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.5384615384615383) internal successors, (297), 117 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:38,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 297 transitions. [2021-10-08 17:33:38,685 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 297 transitions. Word has length 15 [2021-10-08 17:33:38,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:38,685 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 297 transitions. [2021-10-08 17:33:38,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:38,685 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 297 transitions. [2021-10-08 17:33:38,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:38,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:38,686 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:38,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:38,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:38,901 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:38,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:38,901 INFO L82 PathProgramCache]: Analyzing trace with hash 748079034, now seen corresponding path program 14 times [2021-10-08 17:33:38,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:38,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221684746] [2021-10-08 17:33:38,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:33:38,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:38,904 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:38,942 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 17:33:39,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:33:39,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:39,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:39,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:39,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:40,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:40,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221684746] [2021-10-08 17:33:40,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221684746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:40,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:40,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:40,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195342222] [2021-10-08 17:33:40,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:40,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:40,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:40,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:40,451 INFO L87 Difference]: Start difference. First operand 118 states and 297 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:41,531 INFO L93 Difference]: Finished difference Result 171 states and 380 transitions. [2021-10-08 17:33:41,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-08 17:33:41,533 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:41,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:41,534 INFO L225 Difference]: With dead ends: 171 [2021-10-08 17:33:41,534 INFO L226 Difference]: Without dead ends: 156 [2021-10-08 17:33:41,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1282.1ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-10-08 17:33:41,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-08 17:33:41,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 116. [2021-10-08 17:33:41,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.5391304347826087) internal successors, (292), 115 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:41,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 292 transitions. [2021-10-08 17:33:41,540 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 292 transitions. Word has length 15 [2021-10-08 17:33:41,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:41,540 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 292 transitions. [2021-10-08 17:33:41,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 292 transitions. [2021-10-08 17:33:41,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 17:33:41,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:41,541 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:41,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-10-08 17:33:41,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:41,755 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:41,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:41,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1312192372, now seen corresponding path program 15 times [2021-10-08 17:33:41,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:41,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077786767] [2021-10-08 17:33:41,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:33:41,757 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:41,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:41,758 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:41,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 17:33:42,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:33:42,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:42,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 17:33:42,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:42,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:42,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:43,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:43,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:43,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077786767] [2021-10-08 17:33:43,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077786767] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:43,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:43,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 17:33:43,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063581423] [2021-10-08 17:33:43,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 17:33:43,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:43,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 17:33:43,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-08 17:33:43,033 INFO L87 Difference]: Start difference. First operand 116 states and 292 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:43,982 INFO L93 Difference]: Finished difference Result 157 states and 353 transitions. [2021-10-08 17:33:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 17:33:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 17:33:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:43,984 INFO L225 Difference]: With dead ends: 157 [2021-10-08 17:33:43,984 INFO L226 Difference]: Without dead ends: 142 [2021-10-08 17:33:43,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1077.2ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-10-08 17:33:43,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-08 17:33:43,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 116. [2021-10-08 17:33:43,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.5391304347826087) internal successors, (292), 115 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:43,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 292 transitions. [2021-10-08 17:33:43,989 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 292 transitions. Word has length 15 [2021-10-08 17:33:43,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:43,989 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 292 transitions. [2021-10-08 17:33:43,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 292 transitions. [2021-10-08 17:33:43,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:33:43,990 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:43,990 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:44,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 17:33:44,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:44,204 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:44,204 INFO L82 PathProgramCache]: Analyzing trace with hash 298647443, now seen corresponding path program 5 times [2021-10-08 17:33:44,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:44,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757497019] [2021-10-08 17:33:44,205 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:33:44,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:44,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:44,207 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:44,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 17:33:44,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:33:44,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:44,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:33:44,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:45,061 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:45,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:46,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:46,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757497019] [2021-10-08 17:33:46,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757497019] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:46,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:46,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:33:46,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337983678] [2021-10-08 17:33:46,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:33:46,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:46,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:33:46,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:33:46,105 INFO L87 Difference]: Start difference. First operand 116 states and 292 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:52,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:33:52,290 INFO L93 Difference]: Finished difference Result 460 states and 971 transitions. [2021-10-08 17:33:52,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:33:52,291 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:33:52,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:33:52,293 INFO L225 Difference]: With dead ends: 460 [2021-10-08 17:33:52,293 INFO L226 Difference]: Without dead ends: 440 [2021-10-08 17:33:52,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 5758.2ms TimeCoverageRelationStatistics Valid=560, Invalid=2302, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:33:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-10-08 17:33:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 136. [2021-10-08 17:33:52,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 2.7555555555555555) internal successors, (372), 135 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 372 transitions. [2021-10-08 17:33:52,302 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 372 transitions. Word has length 17 [2021-10-08 17:33:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:33:52,302 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 372 transitions. [2021-10-08 17:33:52,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:33:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 372 transitions. [2021-10-08 17:33:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:33:52,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:33:52,303 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:33:52,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-08 17:33:52,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:33:52,517 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:33:52,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:33:52,518 INFO L82 PathProgramCache]: Analyzing trace with hash 2016396503, now seen corresponding path program 6 times [2021-10-08 17:33:52,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:33:52,519 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818748723] [2021-10-08 17:33:52,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:33:52,520 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:33:52,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:33:52,521 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:33:52,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 17:33:52,993 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:33:52,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:33:52,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:33:52,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:33:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:53,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:33:54,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:33:54,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:33:54,782 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818748723] [2021-10-08 17:33:54,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818748723] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:33:54,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:33:54,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:33:54,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939987449] [2021-10-08 17:33:54,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:33:54,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:33:54,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:33:54,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:33:54,784 INFO L87 Difference]: Start difference. First operand 136 states and 372 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:02,212 INFO L93 Difference]: Finished difference Result 412 states and 899 transitions. [2021-10-08 17:34:02,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-08 17:34:02,213 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:34:02,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:02,217 INFO L225 Difference]: With dead ends: 412 [2021-10-08 17:34:02,217 INFO L226 Difference]: Without dead ends: 392 [2021-10-08 17:34:02,218 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 872 ImplicationChecksByTransitivity, 7447.4ms TimeCoverageRelationStatistics Valid=638, Invalid=2668, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:34:02,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-10-08 17:34:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 132. [2021-10-08 17:34:02,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.7022900763358777) internal successors, (354), 131 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 354 transitions. [2021-10-08 17:34:02,229 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 354 transitions. Word has length 17 [2021-10-08 17:34:02,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:02,230 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 354 transitions. [2021-10-08 17:34:02,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 354 transitions. [2021-10-08 17:34:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:34:02,231 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:02,231 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:02,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 17:34:02,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:34:02,446 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:34:02,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:02,447 INFO L82 PathProgramCache]: Analyzing trace with hash 278311126, now seen corresponding path program 7 times [2021-10-08 17:34:02,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:02,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [413361891] [2021-10-08 17:34:02,448 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:34:02,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:02,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:02,450 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:34:02,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 17:34:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:34:02,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:34:02,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:03,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:03,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:04,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:04,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:04,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [413361891] [2021-10-08 17:34:04,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [413361891] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:04,241 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:04,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:34:04,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90695438] [2021-10-08 17:34:04,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:34:04,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:04,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:34:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:34:04,243 INFO L87 Difference]: Start difference. First operand 132 states and 354 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:09,614 INFO L93 Difference]: Finished difference Result 336 states and 762 transitions. [2021-10-08 17:34:09,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:34:09,616 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:34:09,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:09,617 INFO L225 Difference]: With dead ends: 336 [2021-10-08 17:34:09,617 INFO L226 Difference]: Without dead ends: 308 [2021-10-08 17:34:09,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 5409.1ms TimeCoverageRelationStatistics Valid=401, Invalid=1855, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:34:09,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-10-08 17:34:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 144. [2021-10-08 17:34:09,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.6223776223776225) internal successors, (375), 143 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:09,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 375 transitions. [2021-10-08 17:34:09,624 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 375 transitions. Word has length 17 [2021-10-08 17:34:09,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:09,624 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 375 transitions. [2021-10-08 17:34:09,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:09,624 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 375 transitions. [2021-10-08 17:34:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:34:09,625 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:09,625 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:09,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 17:34:09,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:34:09,826 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:34:09,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:09,827 INFO L82 PathProgramCache]: Analyzing trace with hash -868938832, now seen corresponding path program 16 times [2021-10-08 17:34:09,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:09,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [443316833] [2021-10-08 17:34:09,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:34:09,828 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:09,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:09,829 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:34:09,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 17:34:10,291 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:34:10,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:10,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:34:10,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:10,687 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:10,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:11,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:11,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [443316833] [2021-10-08 17:34:11,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [443316833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:11,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:11,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:34:11,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5273679] [2021-10-08 17:34:11,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:34:11,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:11,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:34:11,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:34:11,947 INFO L87 Difference]: Start difference. First operand 144 states and 375 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:20,905 INFO L93 Difference]: Finished difference Result 422 states and 929 transitions. [2021-10-08 17:34:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-08 17:34:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:34:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:20,909 INFO L225 Difference]: With dead ends: 422 [2021-10-08 17:34:20,909 INFO L226 Difference]: Without dead ends: 402 [2021-10-08 17:34:20,910 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 643 ImplicationChecksByTransitivity, 8568.6ms TimeCoverageRelationStatistics Valid=702, Invalid=2268, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 17:34:20,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-10-08 17:34:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 162. [2021-10-08 17:34:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8322981366459627) internal successors, (456), 161 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2021-10-08 17:34:20,920 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2021-10-08 17:34:20,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:20,920 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2021-10-08 17:34:20,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2021-10-08 17:34:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:34:20,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:20,921 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:20,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 17:34:21,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:34:21,130 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:34:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:21,131 INFO L82 PathProgramCache]: Analyzing trace with hash 848810228, now seen corresponding path program 17 times [2021-10-08 17:34:21,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:21,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1912959145] [2021-10-08 17:34:21,132 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:34:21,133 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:21,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:21,136 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:34:21,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 17:34:21,620 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:34:21,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:21,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:34:21,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:22,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:22,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:23,159 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:23,159 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:23,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1912959145] [2021-10-08 17:34:23,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1912959145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:23,160 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:23,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:34:23,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111494872] [2021-10-08 17:34:23,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:34:23,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:34:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:34:23,162 INFO L87 Difference]: Start difference. First operand 162 states and 456 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:31,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:31,867 INFO L93 Difference]: Finished difference Result 438 states and 960 transitions. [2021-10-08 17:34:31,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:34:31,868 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:34:31,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:31,870 INFO L225 Difference]: With dead ends: 438 [2021-10-08 17:34:31,870 INFO L226 Difference]: Without dead ends: 418 [2021-10-08 17:34:31,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1100 ImplicationChecksByTransitivity, 8286.2ms TimeCoverageRelationStatistics Valid=966, Invalid=3194, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 17:34:31,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-08 17:34:31,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 156. [2021-10-08 17:34:31,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 2.767741935483871) internal successors, (429), 155 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 429 transitions. [2021-10-08 17:34:31,877 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 429 transitions. Word has length 17 [2021-10-08 17:34:31,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:31,877 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 429 transitions. [2021-10-08 17:34:31,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:31,877 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 429 transitions. [2021-10-08 17:34:31,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:34:31,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:31,878 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:31,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 17:34:32,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:34:32,079 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:34:32,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:32,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1848874289, now seen corresponding path program 8 times [2021-10-08 17:34:32,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:32,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1843007394] [2021-10-08 17:34:32,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:34:32,082 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:32,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:32,083 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:34:32,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 17:34:32,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:34:32,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:32,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:34:32,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:32,988 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:32,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:34,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:34,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1843007394] [2021-10-08 17:34:34,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1843007394] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:34,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:34,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:34:34,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682020608] [2021-10-08 17:34:34,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:34:34,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:34,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:34:34,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:34:34,120 INFO L87 Difference]: Start difference. First operand 156 states and 429 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:42,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:42,492 INFO L93 Difference]: Finished difference Result 386 states and 902 transitions. [2021-10-08 17:34:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 17:34:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:34:42,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:42,496 INFO L225 Difference]: With dead ends: 386 [2021-10-08 17:34:42,496 INFO L226 Difference]: Without dead ends: 366 [2021-10-08 17:34:42,497 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 8221.2ms TimeCoverageRelationStatistics Valid=788, Invalid=2994, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:34:42,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-08 17:34:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 166. [2021-10-08 17:34:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.806060606060606) internal successors, (463), 165 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:42,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 463 transitions. [2021-10-08 17:34:42,504 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 463 transitions. Word has length 17 [2021-10-08 17:34:42,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:42,505 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 463 transitions. [2021-10-08 17:34:42,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:42,505 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 463 transitions. [2021-10-08 17:34:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:34:42,506 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:42,506 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:42,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-08 17:34:42,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:34:42,714 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:34:42,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:42,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1782273937, now seen corresponding path program 9 times [2021-10-08 17:34:42,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:42,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431041248] [2021-10-08 17:34:42,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:34:42,716 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:42,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:42,717 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:34:42,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 17:34:43,322 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:34:43,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:43,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:34:43,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:43,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:44,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:44,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:44,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431041248] [2021-10-08 17:34:44,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431041248] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:44,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:44,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:34:44,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166077569] [2021-10-08 17:34:44,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:34:44,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:44,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:34:44,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:34:44,816 INFO L87 Difference]: Start difference. First operand 166 states and 463 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:54,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:34:54,832 INFO L93 Difference]: Finished difference Result 485 states and 1111 transitions. [2021-10-08 17:34:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-10-08 17:34:54,833 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:34:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:34:54,835 INFO L225 Difference]: With dead ends: 485 [2021-10-08 17:34:54,835 INFO L226 Difference]: Without dead ends: 470 [2021-10-08 17:34:54,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1486 ImplicationChecksByTransitivity, 9764.1ms TimeCoverageRelationStatistics Valid=1080, Invalid=4032, Unknown=0, NotChecked=0, Total=5112 [2021-10-08 17:34:54,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-10-08 17:34:54,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 176. [2021-10-08 17:34:54,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.902857142857143) internal successors, (508), 175 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:54,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 508 transitions. [2021-10-08 17:34:54,842 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 508 transitions. Word has length 17 [2021-10-08 17:34:54,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:34:54,842 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 508 transitions. [2021-10-08 17:34:54,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:34:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 508 transitions. [2021-10-08 17:34:54,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:34:54,843 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:34:54,843 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:34:54,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 17:34:55,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:34:55,044 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:34:55,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:34:55,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1680241682, now seen corresponding path program 18 times [2021-10-08 17:34:55,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:34:55,046 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815874679] [2021-10-08 17:34:55,046 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:34:55,047 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:34:55,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:34:55,048 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:34:55,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 17:34:55,636 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:34:55,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:34:55,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:34:55,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:34:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:56,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:34:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:34:57,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:34:57,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815874679] [2021-10-08 17:34:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815874679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:34:57,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:34:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:34:57,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20253106] [2021-10-08 17:34:57,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:34:57,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:34:57,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:34:57,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:34:57,210 INFO L87 Difference]: Start difference. First operand 176 states and 508 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:05,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:05,483 INFO L93 Difference]: Finished difference Result 400 states and 925 transitions. [2021-10-08 17:35:05,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:35:05,485 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:35:05,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:05,487 INFO L225 Difference]: With dead ends: 400 [2021-10-08 17:35:05,487 INFO L226 Difference]: Without dead ends: 380 [2021-10-08 17:35:05,489 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 8006.2ms TimeCoverageRelationStatistics Valid=817, Invalid=2965, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:35:05,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-08 17:35:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 178. [2021-10-08 17:35:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.8983050847457625) internal successors, (513), 177 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 513 transitions. [2021-10-08 17:35:05,494 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 513 transitions. Word has length 17 [2021-10-08 17:35:05,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:05,494 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 513 transitions. [2021-10-08 17:35:05,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:05,495 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 513 transitions. [2021-10-08 17:35:05,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:35:05,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:05,495 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:05,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:05,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:35:05,696 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:35:05,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:05,698 INFO L82 PathProgramCache]: Analyzing trace with hash 201735120, now seen corresponding path program 10 times [2021-10-08 17:35:05,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:05,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425193255] [2021-10-08 17:35:05,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:35:05,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:05,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:05,699 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:35:05,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 17:35:06,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:35:06,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:06,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:35:06,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:06,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:06,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:07,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:07,785 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:07,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425193255] [2021-10-08 17:35:07,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425193255] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:07,785 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:07,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:35:07,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201405915] [2021-10-08 17:35:07,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:35:07,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:07,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:35:07,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:35:07,787 INFO L87 Difference]: Start difference. First operand 178 states and 513 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:13,887 INFO L93 Difference]: Finished difference Result 420 states and 990 transitions. [2021-10-08 17:35:13,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:35:13,889 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:35:13,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:13,891 INFO L225 Difference]: With dead ends: 420 [2021-10-08 17:35:13,891 INFO L226 Difference]: Without dead ends: 398 [2021-10-08 17:35:13,892 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 6053.8ms TimeCoverageRelationStatistics Valid=554, Invalid=2202, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:35:13,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-08 17:35:13,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 178. [2021-10-08 17:35:13,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.8870056497175143) internal successors, (511), 177 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:13,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 511 transitions. [2021-10-08 17:35:13,899 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 511 transitions. Word has length 17 [2021-10-08 17:35:13,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:13,900 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 511 transitions. [2021-10-08 17:35:13,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:13,901 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 511 transitions. [2021-10-08 17:35:13,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:35:13,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:13,903 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:13,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:14,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:35:14,104 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:35:14,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:14,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1062871216, now seen corresponding path program 11 times [2021-10-08 17:35:14,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:14,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048704335] [2021-10-08 17:35:14,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:35:14,106 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:14,108 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:35:14,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 17:35:14,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:35:14,702 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:14,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 17:35:14,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:15,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:15,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:16,314 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:16,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:16,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048704335] [2021-10-08 17:35:16,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048704335] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:16,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:16,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:35:16,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925837553] [2021-10-08 17:35:16,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:35:16,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:16,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:35:16,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:35:16,317 INFO L87 Difference]: Start difference. First operand 178 states and 511 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:24,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:24,684 INFO L93 Difference]: Finished difference Result 485 states and 1129 transitions. [2021-10-08 17:35:24,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:35:24,685 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:35:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:24,687 INFO L225 Difference]: With dead ends: 485 [2021-10-08 17:35:24,687 INFO L226 Difference]: Without dead ends: 458 [2021-10-08 17:35:24,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 985 ImplicationChecksByTransitivity, 8146.0ms TimeCoverageRelationStatistics Valid=908, Invalid=2514, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:35:24,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-08 17:35:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 196. [2021-10-08 17:35:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.005128205128205) internal successors, (586), 195 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 586 transitions. [2021-10-08 17:35:24,694 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 586 transitions. Word has length 17 [2021-10-08 17:35:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:24,695 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 586 transitions. [2021-10-08 17:35:24,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 586 transitions. [2021-10-08 17:35:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:35:24,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:24,696 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:24,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:24,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:35:24,896 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:35:24,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:24,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1523527732, now seen corresponding path program 19 times [2021-10-08 17:35:24,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:24,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95376323] [2021-10-08 17:35:24,898 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:35:24,898 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:24,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:24,900 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) [2021-10-08 17:35:24,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 17:35:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:35:25,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:35:25,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:25,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:27,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:27,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95376323] [2021-10-08 17:35:27,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95376323] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:27,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:27,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:35:27,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157310146] [2021-10-08 17:35:27,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:35:27,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:27,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:35:27,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:35:27,054 INFO L87 Difference]: Start difference. First operand 196 states and 586 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:33,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:33,303 INFO L93 Difference]: Finished difference Result 370 states and 909 transitions. [2021-10-08 17:35:33,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:35:33,304 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:35:33,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:33,306 INFO L225 Difference]: With dead ends: 370 [2021-10-08 17:35:33,306 INFO L226 Difference]: Without dead ends: 350 [2021-10-08 17:35:33,307 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 615 ImplicationChecksByTransitivity, 6065.8ms TimeCoverageRelationStatistics Valid=567, Invalid=2085, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:35:33,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-10-08 17:35:33,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 198. [2021-10-08 17:35:33,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.989847715736041) internal successors, (589), 197 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:33,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 589 transitions. [2021-10-08 17:35:33,313 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 589 transitions. Word has length 17 [2021-10-08 17:35:33,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:33,314 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 589 transitions. [2021-10-08 17:35:33,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:33,314 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 589 transitions. [2021-10-08 17:35:33,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:35:33,315 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:33,315 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:33,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-08 17:35:33,530 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 [2021-10-08 17:35:33,530 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:35:33,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:33,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1113957961, now seen corresponding path program 12 times [2021-10-08 17:35:33,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:33,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516747635] [2021-10-08 17:35:33,532 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:35:33,532 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:33,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:33,533 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) [2021-10-08 17:35:33,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 17:35:34,235 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 17:35:34,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:34,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:35:34,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:34,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:35,869 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:35,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516747635] [2021-10-08 17:35:35,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516747635] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:35,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:35,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:35:35,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175208124] [2021-10-08 17:35:35,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:35:35,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:35:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:35:35,871 INFO L87 Difference]: Start difference. First operand 198 states and 589 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:45,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:45,795 INFO L93 Difference]: Finished difference Result 456 states and 1091 transitions. [2021-10-08 17:35:45,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:35:45,796 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:35:45,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:45,799 INFO L225 Difference]: With dead ends: 456 [2021-10-08 17:35:45,799 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 17:35:45,799 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 9577.9ms TimeCoverageRelationStatistics Valid=753, Invalid=2787, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:35:45,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 17:35:45,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 212. [2021-10-08 17:35:45,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 211 states have (on average 3.090047393364929) internal successors, (652), 211 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:45,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 652 transitions. [2021-10-08 17:35:45,807 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 652 transitions. Word has length 17 [2021-10-08 17:35:45,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:45,808 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 652 transitions. [2021-10-08 17:35:45,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:45,808 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 652 transitions. [2021-10-08 17:35:45,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:35:45,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:45,809 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:45,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:46,023 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 [2021-10-08 17:35:46,023 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:35:46,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:46,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1396659923, now seen corresponding path program 13 times [2021-10-08 17:35:46,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:46,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1946595197] [2021-10-08 17:35:46,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:35:46,025 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:46,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:46,027 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) [2021-10-08 17:35:46,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 17:35:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:35:46,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:35:46,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:47,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:35:48,132 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:48,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:35:48,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1946595197] [2021-10-08 17:35:48,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1946595197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:35:48,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:35:48,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:35:48,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575036060] [2021-10-08 17:35:48,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:35:48,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:35:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:35:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:35:48,136 INFO L87 Difference]: Start difference. First operand 212 states and 652 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:35:57,794 INFO L93 Difference]: Finished difference Result 566 states and 1319 transitions. [2021-10-08 17:35:57,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-08 17:35:57,795 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:35:57,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:35:57,799 INFO L225 Difference]: With dead ends: 566 [2021-10-08 17:35:57,799 INFO L226 Difference]: Without dead ends: 546 [2021-10-08 17:35:57,800 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1164 ImplicationChecksByTransitivity, 9180.7ms TimeCoverageRelationStatistics Valid=918, Invalid=3638, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 17:35:57,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-08 17:35:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 220. [2021-10-08 17:35:57,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 219 states have (on average 3.141552511415525) internal successors, (688), 219 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:57,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 688 transitions. [2021-10-08 17:35:57,808 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 688 transitions. Word has length 17 [2021-10-08 17:35:57,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:35:57,808 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 688 transitions. [2021-10-08 17:35:57,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:35:57,808 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 688 transitions. [2021-10-08 17:35:57,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:35:57,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:35:57,809 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:35:57,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 17:35:58,015 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 [2021-10-08 17:35:58,016 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:35:58,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:35:58,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1180558313, now seen corresponding path program 14 times [2021-10-08 17:35:58,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:35:58,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159735530] [2021-10-08 17:35:58,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:35:58,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:35:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:35:58,020 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) [2021-10-08 17:35:58,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 17:35:58,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:35:58,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:35:58,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:35:58,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:35:59,164 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:35:59,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:00,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:00,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159735530] [2021-10-08 17:36:00,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159735530] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:00,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:00,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:36:00,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060606157] [2021-10-08 17:36:00,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:36:00,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:00,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:36:00,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:36:00,397 INFO L87 Difference]: Start difference. First operand 220 states and 688 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:11,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:11,520 INFO L93 Difference]: Finished difference Result 523 states and 1251 transitions. [2021-10-08 17:36:11,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 17:36:11,522 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:36:11,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:11,525 INFO L225 Difference]: With dead ends: 523 [2021-10-08 17:36:11,525 INFO L226 Difference]: Without dead ends: 508 [2021-10-08 17:36:11,526 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 10888.8ms TimeCoverageRelationStatistics Valid=991, Invalid=3299, Unknown=0, NotChecked=0, Total=4290 [2021-10-08 17:36:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-10-08 17:36:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 222. [2021-10-08 17:36:11,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.1538461538461537) internal successors, (697), 221 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:11,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 697 transitions. [2021-10-08 17:36:11,534 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 697 transitions. Word has length 17 [2021-10-08 17:36:11,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:11,535 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 697 transitions. [2021-10-08 17:36:11,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:11,535 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 697 transitions. [2021-10-08 17:36:11,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:36:11,536 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:11,536 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:11,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 17:36:11,749 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 [2021-10-08 17:36:11,750 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:36:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:11,751 INFO L82 PathProgramCache]: Analyzing trace with hash -348106636, now seen corresponding path program 20 times [2021-10-08 17:36:11,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:11,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297414707] [2021-10-08 17:36:11,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:36:11,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:11,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:11,753 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) [2021-10-08 17:36:11,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 17:36:12,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:36:12,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:12,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:36:12,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:13,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:14,266 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:14,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297414707] [2021-10-08 17:36:14,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1297414707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:14,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:14,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:36:14,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802252333] [2021-10-08 17:36:14,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:36:14,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:36:14,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:36:14,268 INFO L87 Difference]: Start difference. First operand 222 states and 697 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:23,996 INFO L93 Difference]: Finished difference Result 448 states and 1074 transitions. [2021-10-08 17:36:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-08 17:36:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:36:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:24,000 INFO L225 Difference]: With dead ends: 448 [2021-10-08 17:36:24,000 INFO L226 Difference]: Without dead ends: 428 [2021-10-08 17:36:24,001 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 9318.3ms TimeCoverageRelationStatistics Valid=783, Invalid=2757, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 17:36:24,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-08 17:36:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 222. [2021-10-08 17:36:24,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.1538461538461537) internal successors, (697), 221 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:24,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 697 transitions. [2021-10-08 17:36:24,009 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 697 transitions. Word has length 17 [2021-10-08 17:36:24,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:24,010 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 697 transitions. [2021-10-08 17:36:24,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:24,010 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 697 transitions. [2021-10-08 17:36:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:36:24,011 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:24,011 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:24,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-08 17:36:24,226 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 [2021-10-08 17:36:24,227 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:36:24,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:24,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1533870166, now seen corresponding path program 15 times [2021-10-08 17:36:24,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:24,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015032930] [2021-10-08 17:36:24,228 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:36:24,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:24,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:24,230 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) [2021-10-08 17:36:24,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 17:36:24,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:36:24,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:24,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:36:24,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:25,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:26,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:26,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015032930] [2021-10-08 17:36:26,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015032930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:26,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:26,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:36:26,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491354566] [2021-10-08 17:36:26,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:36:26,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:26,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:36:26,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:36:26,520 INFO L87 Difference]: Start difference. First operand 222 states and 697 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:33,987 INFO L93 Difference]: Finished difference Result 432 states and 1056 transitions. [2021-10-08 17:36:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:36:33,989 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:36:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:33,991 INFO L225 Difference]: With dead ends: 432 [2021-10-08 17:36:33,991 INFO L226 Difference]: Without dead ends: 410 [2021-10-08 17:36:33,992 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 7246.4ms TimeCoverageRelationStatistics Valid=502, Invalid=1948, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:36:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-08 17:36:33,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 222. [2021-10-08 17:36:33,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 3.1447963800904977) internal successors, (695), 221 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 695 transitions. [2021-10-08 17:36:34,000 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 695 transitions. Word has length 17 [2021-10-08 17:36:34,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:34,000 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 695 transitions. [2021-10-08 17:36:34,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:34,000 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 695 transitions. [2021-10-08 17:36:34,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:36:34,001 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:34,001 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:34,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-10-08 17:36:34,214 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 [2021-10-08 17:36:34,215 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:36:34,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:34,215 INFO L82 PathProgramCache]: Analyzing trace with hash 269263830, now seen corresponding path program 16 times [2021-10-08 17:36:34,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:34,216 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751851108] [2021-10-08 17:36:34,216 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:36:34,217 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:34,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:34,218 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) [2021-10-08 17:36:34,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 17:36:34,959 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:36:34,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:34,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:36:34,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:35,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:35,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:36,442 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:36,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:36,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751851108] [2021-10-08 17:36:36,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751851108] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:36,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:36,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:36:36,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537404379] [2021-10-08 17:36:36,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:36:36,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:36,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:36:36,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:36:36,445 INFO L87 Difference]: Start difference. First operand 222 states and 695 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:45,159 INFO L93 Difference]: Finished difference Result 578 states and 1383 transitions. [2021-10-08 17:36:45,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:36:45,160 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:36:45,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:45,164 INFO L225 Difference]: With dead ends: 578 [2021-10-08 17:36:45,164 INFO L226 Difference]: Without dead ends: 556 [2021-10-08 17:36:45,165 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 934 ImplicationChecksByTransitivity, 8406.3ms TimeCoverageRelationStatistics Valid=793, Invalid=2629, Unknown=0, NotChecked=0, Total=3422 [2021-10-08 17:36:45,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-08 17:36:45,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 228. [2021-10-08 17:36:45,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 3.154185022026432) internal successors, (716), 227 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:45,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 716 transitions. [2021-10-08 17:36:45,173 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 716 transitions. Word has length 17 [2021-10-08 17:36:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:45,173 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 716 transitions. [2021-10-08 17:36:45,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 716 transitions. [2021-10-08 17:36:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:36:45,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:45,175 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:45,187 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2021-10-08 17:36:45,375 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 [2021-10-08 17:36:45,376 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:36:45,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:45,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1439304518, now seen corresponding path program 21 times [2021-10-08 17:36:45,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:45,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1827193835] [2021-10-08 17:36:45,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:36:45,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:45,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:45,379 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:36:45,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 17:36:46,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:36:46,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:46,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 17:36:46,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:46,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:46,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:47,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:47,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1827193835] [2021-10-08 17:36:47,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1827193835] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:47,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:47,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:36:47,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106163769] [2021-10-08 17:36:47,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:36:47,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:36:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:36:47,600 INFO L87 Difference]: Start difference. First operand 228 states and 716 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:36:54,166 INFO L93 Difference]: Finished difference Result 376 states and 952 transitions. [2021-10-08 17:36:54,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:36:54,167 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:36:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:36:54,169 INFO L225 Difference]: With dead ends: 376 [2021-10-08 17:36:54,169 INFO L226 Difference]: Without dead ends: 356 [2021-10-08 17:36:54,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 6193.3ms TimeCoverageRelationStatistics Valid=607, Invalid=2363, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 17:36:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-10-08 17:36:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 228. [2021-10-08 17:36:54,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 3.154185022026432) internal successors, (716), 227 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 716 transitions. [2021-10-08 17:36:54,176 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 716 transitions. Word has length 17 [2021-10-08 17:36:54,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:36:54,176 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 716 transitions. [2021-10-08 17:36:54,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:36:54,177 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 716 transitions. [2021-10-08 17:36:54,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:36:54,178 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:36:54,178 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:36:54,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 17:36:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:36:54,394 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:36:54,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:36:54,395 INFO L82 PathProgramCache]: Analyzing trace with hash -126344301, now seen corresponding path program 17 times [2021-10-08 17:36:54,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:36:54,396 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193347900] [2021-10-08 17:36:54,396 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:36:54,396 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:36:54,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:36:54,397 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:36:54,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 17:36:55,204 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:36:55,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:36:55,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:36:55,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:36:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:55,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:36:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:36:56,663 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:36:56,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193347900] [2021-10-08 17:36:56,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193347900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:36:56,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:36:56,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:36:56,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483001352] [2021-10-08 17:36:56,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:36:56,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:36:56,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:36:56,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:36:56,666 INFO L87 Difference]: Start difference. First operand 228 states and 716 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:06,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:06,458 INFO L93 Difference]: Finished difference Result 582 states and 1355 transitions. [2021-10-08 17:37:06,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:37:06,459 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:37:06,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:06,464 INFO L225 Difference]: With dead ends: 582 [2021-10-08 17:37:06,464 INFO L226 Difference]: Without dead ends: 550 [2021-10-08 17:37:06,465 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 9097.7ms TimeCoverageRelationStatistics Valid=840, Invalid=3320, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 17:37:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-08 17:37:06,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 244. [2021-10-08 17:37:06,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 3.2181069958847734) internal successors, (782), 243 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:06,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 782 transitions. [2021-10-08 17:37:06,476 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 782 transitions. Word has length 17 [2021-10-08 17:37:06,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:06,477 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 782 transitions. [2021-10-08 17:37:06,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 782 transitions. [2021-10-08 17:37:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:37:06,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:06,478 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:06,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-08 17:37:06,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:37:06,692 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:37:06,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:06,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1591404759, now seen corresponding path program 18 times [2021-10-08 17:37:06,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:06,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883390467] [2021-10-08 17:37:06,694 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:37:06,694 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:06,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:06,695 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:37:06,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 17:37:07,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:37:07,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:07,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:37:07,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:08,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:08,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:09,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:09,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883390467] [2021-10-08 17:37:09,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883390467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:09,243 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:09,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:37:09,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084904091] [2021-10-08 17:37:09,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:37:09,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:09,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:37:09,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:37:09,245 INFO L87 Difference]: Start difference. First operand 244 states and 782 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:19,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:19,221 INFO L93 Difference]: Finished difference Result 559 states and 1334 transitions. [2021-10-08 17:37:19,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 17:37:19,223 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:37:19,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:19,226 INFO L225 Difference]: With dead ends: 559 [2021-10-08 17:37:19,226 INFO L226 Difference]: Without dead ends: 544 [2021-10-08 17:37:19,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1021 ImplicationChecksByTransitivity, 9483.6ms TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:37:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-08 17:37:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 240. [2021-10-08 17:37:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 3.196652719665272) internal successors, (764), 239 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:19,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 764 transitions. [2021-10-08 17:37:19,238 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 764 transitions. Word has length 17 [2021-10-08 17:37:19,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:19,238 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 764 transitions. [2021-10-08 17:37:19,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:19,238 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 764 transitions. [2021-10-08 17:37:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:37:19,239 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:19,240 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:19,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 17:37:19,453 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:37:19,454 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:37:19,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:19,454 INFO L82 PathProgramCache]: Analyzing trace with hash -256826611, now seen corresponding path program 19 times [2021-10-08 17:37:19,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:19,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145391290] [2021-10-08 17:37:19,456 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:37:19,456 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:19,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:19,457 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:37:19,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 17:37:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:37:20,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:37:20,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:20,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:20,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:21,822 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:21,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:21,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145391290] [2021-10-08 17:37:21,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145391290] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:21,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:21,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:37:21,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597332500] [2021-10-08 17:37:21,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:37:21,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:21,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:37:21,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:37:21,837 INFO L87 Difference]: Start difference. First operand 240 states and 764 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:30,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:30,522 INFO L93 Difference]: Finished difference Result 586 states and 1457 transitions. [2021-10-08 17:37:30,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:37:30,523 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:37:30,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:30,527 INFO L225 Difference]: With dead ends: 586 [2021-10-08 17:37:30,528 INFO L226 Difference]: Without dead ends: 566 [2021-10-08 17:37:30,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 728 ImplicationChecksByTransitivity, 8248.8ms TimeCoverageRelationStatistics Valid=716, Invalid=2476, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:37:30,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-10-08 17:37:30,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 270. [2021-10-08 17:37:30,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.3048327137546467) internal successors, (889), 269 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:30,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 889 transitions. [2021-10-08 17:37:30,539 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 889 transitions. Word has length 17 [2021-10-08 17:37:30,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:30,539 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 889 transitions. [2021-10-08 17:37:30,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:30,540 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 889 transitions. [2021-10-08 17:37:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:37:30,541 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:30,541 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:30,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 17:37:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:37:30,756 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:37:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:30,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1460922449, now seen corresponding path program 20 times [2021-10-08 17:37:30,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:30,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362845360] [2021-10-08 17:37:30,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:37:30,758 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:30,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:30,760 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:37:30,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 17:37:31,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:37:31,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:31,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:37:31,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:32,007 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:32,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:33,274 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:33,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362845360] [2021-10-08 17:37:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362845360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:33,274 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:33,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:37:33,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562772845] [2021-10-08 17:37:33,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:37:33,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:37:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:37:33,276 INFO L87 Difference]: Start difference. First operand 270 states and 889 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:42,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:42,963 INFO L93 Difference]: Finished difference Result 569 states and 1433 transitions. [2021-10-08 17:37:42,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 17:37:42,964 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:37:42,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:42,968 INFO L225 Difference]: With dead ends: 569 [2021-10-08 17:37:42,968 INFO L226 Difference]: Without dead ends: 554 [2021-10-08 17:37:42,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 9485.8ms TimeCoverageRelationStatistics Valid=772, Invalid=2308, Unknown=0, NotChecked=0, Total=3080 [2021-10-08 17:37:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2021-10-08 17:37:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 268. [2021-10-08 17:37:42,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.295880149812734) internal successors, (880), 267 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:42,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 880 transitions. [2021-10-08 17:37:42,979 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 880 transitions. Word has length 17 [2021-10-08 17:37:42,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:42,979 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 880 transitions. [2021-10-08 17:37:42,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:42,980 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 880 transitions. [2021-10-08 17:37:42,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:37:42,981 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:42,981 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:42,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 17:37:43,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:37:43,185 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:37:43,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:43,185 INFO L82 PathProgramCache]: Analyzing trace with hash -119616368, now seen corresponding path program 21 times [2021-10-08 17:37:43,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:43,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46804859] [2021-10-08 17:37:43,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:37:43,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:43,188 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:37:43,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 17:37:44,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:37:44,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:44,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:37:44,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:44,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:44,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:45,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:45,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:45,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46804859] [2021-10-08 17:37:45,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46804859] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:45,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:45,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:37:45,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989831294] [2021-10-08 17:37:45,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:37:45,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:45,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:37:45,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:37:45,776 INFO L87 Difference]: Start difference. First operand 268 states and 880 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:53,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:37:53,378 INFO L93 Difference]: Finished difference Result 500 states and 1297 transitions. [2021-10-08 17:37:53,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 17:37:53,379 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:37:53,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:37:53,382 INFO L225 Difference]: With dead ends: 500 [2021-10-08 17:37:53,383 INFO L226 Difference]: Without dead ends: 478 [2021-10-08 17:37:53,383 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 7511.0ms TimeCoverageRelationStatistics Valid=482, Invalid=1588, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:37:53,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-10-08 17:37:53,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 270. [2021-10-08 17:37:53,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.2973977695167287) internal successors, (887), 269 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 887 transitions. [2021-10-08 17:37:53,392 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 887 transitions. Word has length 17 [2021-10-08 17:37:53,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:37:53,392 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 887 transitions. [2021-10-08 17:37:53,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:37:53,392 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 887 transitions. [2021-10-08 17:37:53,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:37:53,393 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:37:53,394 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:37:53,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-08 17:37:53,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:37:53,595 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:37:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:37:53,596 INFO L82 PathProgramCache]: Analyzing trace with hash 400126708, now seen corresponding path program 22 times [2021-10-08 17:37:53,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:37:53,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179861429] [2021-10-08 17:37:53,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:37:53,597 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:37:53,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:37:53,598 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:37:53,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 17:37:54,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:37:54,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:37:54,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:37:54,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:37:54,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:54,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:37:56,151 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:37:56,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:37:56,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179861429] [2021-10-08 17:37:56,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179861429] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:37:56,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:37:56,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:37:56,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271269640] [2021-10-08 17:37:56,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:37:56,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:37:56,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:37:56,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:37:56,153 INFO L87 Difference]: Start difference. First operand 270 states and 887 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:04,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:04,664 INFO L93 Difference]: Finished difference Result 564 states and 1460 transitions. [2021-10-08 17:38:04,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:38:04,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:38:04,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:04,668 INFO L225 Difference]: With dead ends: 564 [2021-10-08 17:38:04,669 INFO L226 Difference]: Without dead ends: 546 [2021-10-08 17:38:04,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 8276.4ms TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:38:04,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-08 17:38:04,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 288. [2021-10-08 17:38:04,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 287 states have (on average 3.3205574912891986) internal successors, (953), 287 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:04,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 953 transitions. [2021-10-08 17:38:04,677 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 953 transitions. Word has length 17 [2021-10-08 17:38:04,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:04,677 INFO L470 AbstractCegarLoop]: Abstraction has 288 states and 953 transitions. [2021-10-08 17:38:04,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:04,677 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 953 transitions. [2021-10-08 17:38:04,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:38:04,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:04,678 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:04,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 17:38:04,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:38:04,886 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:38:04,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:04,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1384222704, now seen corresponding path program 23 times [2021-10-08 17:38:04,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:04,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033958130] [2021-10-08 17:38:04,888 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:38:04,888 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:04,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:04,889 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:38:04,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 17:38:05,779 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:38:05,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:05,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 17:38:05,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:06,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:07,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:07,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:07,672 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033958130] [2021-10-08 17:38:07,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2033958130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:07,672 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:07,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:38:07,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345255724] [2021-10-08 17:38:07,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:38:07,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:07,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:38:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:38:07,674 INFO L87 Difference]: Start difference. First operand 288 states and 953 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:15,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:15,915 INFO L93 Difference]: Finished difference Result 554 states and 1462 transitions. [2021-10-08 17:38:15,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 17:38:15,917 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:38:15,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:15,919 INFO L225 Difference]: With dead ends: 554 [2021-10-08 17:38:15,920 INFO L226 Difference]: Without dead ends: 540 [2021-10-08 17:38:15,920 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 8020.3ms TimeCoverageRelationStatistics Valid=575, Invalid=1495, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:38:15,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-10-08 17:38:15,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 284. [2021-10-08 17:38:15,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.335689045936396) internal successors, (944), 283 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:15,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 944 transitions. [2021-10-08 17:38:15,926 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 944 transitions. Word has length 17 [2021-10-08 17:38:15,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:15,927 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 944 transitions. [2021-10-08 17:38:15,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:15,927 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 944 transitions. [2021-10-08 17:38:15,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:38:15,928 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:15,928 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:15,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-08 17:38:16,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:38:16,134 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:38:16,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:16,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1165978033, now seen corresponding path program 24 times [2021-10-08 17:38:16,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:16,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659608998] [2021-10-08 17:38:16,135 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:38:16,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:16,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:16,137 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:38:16,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 17:38:17,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:38:17,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:17,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:38:17,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:17,597 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:17,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:18,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:18,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659608998] [2021-10-08 17:38:18,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659608998] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:18,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:18,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:38:18,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841576503] [2021-10-08 17:38:18,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:38:18,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:18,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:38:18,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:38:18,955 INFO L87 Difference]: Start difference. First operand 284 states and 944 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:28,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:28,563 INFO L93 Difference]: Finished difference Result 451 states and 1229 transitions. [2021-10-08 17:38:28,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:38:28,564 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:38:28,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:28,567 INFO L225 Difference]: With dead ends: 451 [2021-10-08 17:38:28,567 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 17:38:28,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 9523.9ms TimeCoverageRelationStatistics Valid=591, Invalid=2061, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:38:28,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 17:38:28,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 284. [2021-10-08 17:38:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.335689045936396) internal successors, (944), 283 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 944 transitions. [2021-10-08 17:38:28,580 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 944 transitions. Word has length 17 [2021-10-08 17:38:28,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:28,580 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 944 transitions. [2021-10-08 17:38:28,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:28,580 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 944 transitions. [2021-10-08 17:38:28,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:38:28,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:28,582 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:28,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-08 17:38:28,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:38:28,798 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:38:28,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:28,798 INFO L82 PathProgramCache]: Analyzing trace with hash 1202176244, now seen corresponding path program 22 times [2021-10-08 17:38:28,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:28,799 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882100801] [2021-10-08 17:38:28,799 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:38:28,799 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:28,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:28,801 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:38:28,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 17:38:29,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:38:29,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:29,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:38:29,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:30,184 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:30,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:31,451 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:31,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882100801] [2021-10-08 17:38:31,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882100801] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:31,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:31,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:38:31,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53628798] [2021-10-08 17:38:31,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:38:31,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:31,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:38:31,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:38:31,452 INFO L87 Difference]: Start difference. First operand 284 states and 944 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:38,535 INFO L93 Difference]: Finished difference Result 424 states and 1168 transitions. [2021-10-08 17:38:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:38:38,537 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:38:38,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:38,539 INFO L225 Difference]: With dead ends: 424 [2021-10-08 17:38:38,539 INFO L226 Difference]: Without dead ends: 404 [2021-10-08 17:38:38,540 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 6921.8ms TimeCoverageRelationStatistics Valid=509, Invalid=1747, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:38:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-08 17:38:38,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 284. [2021-10-08 17:38:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.335689045936396) internal successors, (944), 283 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 944 transitions. [2021-10-08 17:38:38,546 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 944 transitions. Word has length 17 [2021-10-08 17:38:38,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:38,546 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 944 transitions. [2021-10-08 17:38:38,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:38,547 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 944 transitions. [2021-10-08 17:38:38,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:38:38,547 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:38,547 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:38,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 17:38:38,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:38:38,748 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:38:38,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:38,749 INFO L82 PathProgramCache]: Analyzing trace with hash -771328493, now seen corresponding path program 25 times [2021-10-08 17:38:38,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:38,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616436934] [2021-10-08 17:38:38,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:38:38,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:38,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:38,752 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:38:38,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 17:38:39,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:38:39,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:38:39,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:40,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:41,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:41,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:41,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616436934] [2021-10-08 17:38:41,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616436934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:41,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:41,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:38:41,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168218833] [2021-10-08 17:38:41,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:38:41,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:41,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:38:41,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:38:41,193 INFO L87 Difference]: Start difference. First operand 284 states and 944 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:49,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:49,199 INFO L93 Difference]: Finished difference Result 571 states and 1517 transitions. [2021-10-08 17:38:49,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:38:49,201 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:38:49,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:49,204 INFO L225 Difference]: With dead ends: 571 [2021-10-08 17:38:49,204 INFO L226 Difference]: Without dead ends: 556 [2021-10-08 17:38:49,204 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 7765.9ms TimeCoverageRelationStatistics Valid=617, Invalid=2245, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 17:38:49,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-08 17:38:49,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 300. [2021-10-08 17:38:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.3979933110367893) internal successors, (1016), 299 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:49,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 1016 transitions. [2021-10-08 17:38:49,215 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 1016 transitions. Word has length 17 [2021-10-08 17:38:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:49,216 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 1016 transitions. [2021-10-08 17:38:49,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 1016 transitions. [2021-10-08 17:38:49,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:38:49,217 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:49,217 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:49,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Ended with exit code 0 [2021-10-08 17:38:49,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:38:49,433 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:38:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:49,433 INFO L82 PathProgramCache]: Analyzing trace with hash 946420567, now seen corresponding path program 26 times [2021-10-08 17:38:49,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:49,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1907810283] [2021-10-08 17:38:49,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:38:49,434 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:49,435 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:38:49,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 17:38:50,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:38:50,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:38:50,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:38:50,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:38:50,871 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:50,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:38:52,087 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:38:52,087 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:38:52,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1907810283] [2021-10-08 17:38:52,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1907810283] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:38:52,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:38:52,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:38:52,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031704954] [2021-10-08 17:38:52,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:38:52,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:38:52,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:38:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:38:52,090 INFO L87 Difference]: Start difference. First operand 300 states and 1016 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:38:59,347 INFO L93 Difference]: Finished difference Result 551 states and 1484 transitions. [2021-10-08 17:38:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 17:38:59,348 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:38:59,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:38:59,352 INFO L225 Difference]: With dead ends: 551 [2021-10-08 17:38:59,353 INFO L226 Difference]: Without dead ends: 536 [2021-10-08 17:38:59,353 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 7164.5ms TimeCoverageRelationStatistics Valid=594, Invalid=1662, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 17:38:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-08 17:38:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 292. [2021-10-08 17:38:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.3676975945017182) internal successors, (980), 291 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:59,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 980 transitions. [2021-10-08 17:38:59,363 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 980 transitions. Word has length 17 [2021-10-08 17:38:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:38:59,364 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 980 transitions. [2021-10-08 17:38:59,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:38:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 980 transitions. [2021-10-08 17:38:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:38:59,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:38:59,365 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:38:59,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-08 17:38:59,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:38:59,566 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:38:59,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:38:59,566 INFO L82 PathProgramCache]: Analyzing trace with hash -634118250, now seen corresponding path program 27 times [2021-10-08 17:38:59,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:38:59,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755951622] [2021-10-08 17:38:59,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:38:59,567 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:38:59,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:38:59,568 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:38:59,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 17:39:00,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 17:39:00,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:00,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:39:00,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:01,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:02,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:02,258 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:02,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755951622] [2021-10-08 17:39:02,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755951622] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:02,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:02,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:39:02,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009610148] [2021-10-08 17:39:02,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:39:02,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:02,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:39:02,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:39:02,260 INFO L87 Difference]: Start difference. First operand 292 states and 980 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:08,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:08,749 INFO L93 Difference]: Finished difference Result 488 states and 1344 transitions. [2021-10-08 17:39:08,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-08 17:39:08,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:39:08,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:08,753 INFO L225 Difference]: With dead ends: 488 [2021-10-08 17:39:08,753 INFO L226 Difference]: Without dead ends: 466 [2021-10-08 17:39:08,754 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 416 ImplicationChecksByTransitivity, 6571.1ms TimeCoverageRelationStatistics Valid=444, Invalid=1448, Unknown=0, NotChecked=0, Total=1892 [2021-10-08 17:39:08,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-10-08 17:39:08,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 294. [2021-10-08 17:39:08,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.368600682593857) internal successors, (987), 293 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 987 transitions. [2021-10-08 17:39:08,761 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 987 transitions. Word has length 17 [2021-10-08 17:39:08,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:08,762 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 987 transitions. [2021-10-08 17:39:08,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 987 transitions. [2021-10-08 17:39:08,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:39:08,763 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:08,763 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:08,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:08,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:08,964 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:39:08,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:08,965 INFO L82 PathProgramCache]: Analyzing trace with hash -114375174, now seen corresponding path program 28 times [2021-10-08 17:39:08,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:08,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [493763178] [2021-10-08 17:39:08,966 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:39:08,966 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:08,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:08,967 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:08,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 17:39:09,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:39:09,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:09,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 17:39:09,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:10,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:11,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:11,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [493763178] [2021-10-08 17:39:11,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [493763178] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:11,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:11,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:39:11,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100772057] [2021-10-08 17:39:11,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:39:11,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:11,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:39:11,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:39:11,605 INFO L87 Difference]: Start difference. First operand 294 states and 987 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:18,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:18,259 INFO L93 Difference]: Finished difference Result 538 states and 1487 transitions. [2021-10-08 17:39:18,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:39:18,261 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:39:18,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:18,263 INFO L225 Difference]: With dead ends: 538 [2021-10-08 17:39:18,264 INFO L226 Difference]: Without dead ends: 520 [2021-10-08 17:39:18,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 6621.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:39:18,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-08 17:39:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 312. [2021-10-08 17:39:18,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 3.3858520900321545) internal successors, (1053), 311 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 1053 transitions. [2021-10-08 17:39:18,275 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 1053 transitions. Word has length 17 [2021-10-08 17:39:18,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:18,275 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 1053 transitions. [2021-10-08 17:39:18,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 1053 transitions. [2021-10-08 17:39:18,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:39:18,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:18,277 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:18,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-08 17:39:18,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:18,482 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:39:18,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:18,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1898724586, now seen corresponding path program 29 times [2021-10-08 17:39:18,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:18,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646712468] [2021-10-08 17:39:18,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:39:18,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:18,485 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:18,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 17:39:19,550 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:39:19,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:19,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-08 17:39:19,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:19,980 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:19,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:21,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:21,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:21,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646712468] [2021-10-08 17:39:21,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [646712468] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:21,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:21,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:39:21,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983526410] [2021-10-08 17:39:21,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:39:21,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:21,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:39:21,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:39:21,389 INFO L87 Difference]: Start difference. First operand 312 states and 1053 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:28,028 INFO L93 Difference]: Finished difference Result 542 states and 1509 transitions. [2021-10-08 17:39:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:39:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:39:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:28,031 INFO L225 Difference]: With dead ends: 542 [2021-10-08 17:39:28,031 INFO L226 Difference]: Without dead ends: 528 [2021-10-08 17:39:28,031 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 6622.6ms TimeCoverageRelationStatistics Valid=473, Invalid=1249, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 17:39:28,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-08 17:39:28,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 308. [2021-10-08 17:39:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.400651465798046) internal successors, (1044), 307 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 1044 transitions. [2021-10-08 17:39:28,040 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 1044 transitions. Word has length 17 [2021-10-08 17:39:28,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:28,040 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 1044 transitions. [2021-10-08 17:39:28,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:28,040 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 1044 transitions. [2021-10-08 17:39:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:39:28,041 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:28,041 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:28,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:28,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:28,242 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:39:28,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:28,243 INFO L82 PathProgramCache]: Analyzing trace with hash 651476151, now seen corresponding path program 30 times [2021-10-08 17:39:28,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:28,244 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018831115] [2021-10-08 17:39:28,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:39:28,244 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:28,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:28,246 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:28,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 17:39:29,390 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:39:29,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:29,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:39:29,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:29,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:31,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:31,108 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:31,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018831115] [2021-10-08 17:39:31,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018831115] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:31,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:31,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:39:31,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922141937] [2021-10-08 17:39:31,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:39:31,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:31,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:39:31,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:39:31,111 INFO L87 Difference]: Start difference. First operand 308 states and 1044 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:37,970 INFO L93 Difference]: Finished difference Result 469 states and 1326 transitions. [2021-10-08 17:39:37,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 17:39:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:39:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:37,972 INFO L225 Difference]: With dead ends: 469 [2021-10-08 17:39:37,972 INFO L226 Difference]: Without dead ends: 454 [2021-10-08 17:39:37,973 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 6913.8ms TimeCoverageRelationStatistics Valid=406, Invalid=1400, Unknown=0, NotChecked=0, Total=1806 [2021-10-08 17:39:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-08 17:39:37,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 294. [2021-10-08 17:39:37,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.361774744027304) internal successors, (985), 293 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:37,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 985 transitions. [2021-10-08 17:39:37,982 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 985 transitions. Word has length 17 [2021-10-08 17:39:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:37,982 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 985 transitions. [2021-10-08 17:39:37,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 985 transitions. [2021-10-08 17:39:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 17:39:37,983 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:37,983 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:37,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:38,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:38,184 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:39:38,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:38,185 INFO L82 PathProgramCache]: Analyzing trace with hash 687674362, now seen corresponding path program 23 times [2021-10-08 17:39:38,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:38,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160252674] [2021-10-08 17:39:38,187 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:39:38,188 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:38,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:38,189 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:38,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 17:39:39,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:39:39,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:39:39,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 17:39:39,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:39,643 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:40,713 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:40,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160252674] [2021-10-08 17:39:40,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160252674] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:40,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:40,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 17:39:40,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353867443] [2021-10-08 17:39:40,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 17:39:40,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:40,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 17:39:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-08 17:39:40,716 INFO L87 Difference]: Start difference. First operand 294 states and 985 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:46,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:39:46,644 INFO L93 Difference]: Finished difference Result 456 states and 1244 transitions. [2021-10-08 17:39:46,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-08 17:39:46,645 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 17:39:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:39:46,646 INFO L225 Difference]: With dead ends: 456 [2021-10-08 17:39:46,647 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 17:39:46,647 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 5838.5ms TimeCoverageRelationStatistics Valid=463, Invalid=1699, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:39:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 17:39:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 270. [2021-10-08 17:39:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.312267657992565) internal successors, (891), 269 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:46,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 891 transitions. [2021-10-08 17:39:46,655 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 891 transitions. Word has length 17 [2021-10-08 17:39:46,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:39:46,656 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 891 transitions. [2021-10-08 17:39:46,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:39:46,656 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 891 transitions. [2021-10-08 17:39:46,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:39:46,657 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:39:46,657 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:39:46,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 17:39:46,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:39:46,859 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:39:46,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:39:46,859 INFO L82 PathProgramCache]: Analyzing trace with hash -672497447, now seen corresponding path program 31 times [2021-10-08 17:39:46,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:39:46,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001574109] [2021-10-08 17:39:46,861 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:39:46,861 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:39:46,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:39:46,862 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:39:46,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 17:39:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:39:47,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:39:47,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:39:48,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:48,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:39:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:39:49,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:39:49,748 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001574109] [2021-10-08 17:39:49,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001574109] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:39:49,748 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:39:49,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:39:49,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689891307] [2021-10-08 17:39:49,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:39:49,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:39:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:39:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:39:49,750 INFO L87 Difference]: Start difference. First operand 270 states and 891 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:01,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:01,559 INFO L93 Difference]: Finished difference Result 698 states and 1736 transitions. [2021-10-08 17:40:01,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 17:40:01,561 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:40:01,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:01,562 INFO L225 Difference]: With dead ends: 698 [2021-10-08 17:40:01,562 INFO L226 Difference]: Without dead ends: 678 [2021-10-08 17:40:01,563 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1274 ImplicationChecksByTransitivity, 11666.7ms TimeCoverageRelationStatistics Valid=853, Invalid=3839, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 17:40:01,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-10-08 17:40:01,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 284. [2021-10-08 17:40:01,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.2720848056537104) internal successors, (926), 283 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 926 transitions. [2021-10-08 17:40:01,570 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 926 transitions. Word has length 18 [2021-10-08 17:40:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:01,571 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 926 transitions. [2021-10-08 17:40:01,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 926 transitions. [2021-10-08 17:40:01,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:40:01,572 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:01,572 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:01,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:01,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:40:01,774 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:40:01,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:01,775 INFO L82 PathProgramCache]: Analyzing trace with hash 625091870, now seen corresponding path program 24 times [2021-10-08 17:40:01,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:01,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714802149] [2021-10-08 17:40:01,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:40:01,776 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:01,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:01,777 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:01,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 17:40:03,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:40:03,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:03,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:40:03,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:03,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:04,907 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:04,907 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:04,907 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714802149] [2021-10-08 17:40:04,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714802149] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:04,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:04,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:40:04,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899753765] [2021-10-08 17:40:04,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:04,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:04,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:04,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:04,909 INFO L87 Difference]: Start difference. First operand 284 states and 926 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:13,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:13,334 INFO L93 Difference]: Finished difference Result 637 states and 1666 transitions. [2021-10-08 17:40:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-08 17:40:13,336 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:40:13,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:13,337 INFO L225 Difference]: With dead ends: 637 [2021-10-08 17:40:13,337 INFO L226 Difference]: Without dead ends: 622 [2021-10-08 17:40:13,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 956 ImplicationChecksByTransitivity, 8316.7ms TimeCoverageRelationStatistics Valid=877, Invalid=2905, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:40:13,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-08 17:40:13,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 296. [2021-10-08 17:40:13,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.3220338983050848) internal successors, (980), 295 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 980 transitions. [2021-10-08 17:40:13,346 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 980 transitions. Word has length 18 [2021-10-08 17:40:13,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:13,346 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 980 transitions. [2021-10-08 17:40:13,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:13,346 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 980 transitions. [2021-10-08 17:40:13,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:40:13,347 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:13,347 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:13,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:13,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:40:13,548 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:40:13,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:13,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1952126366, now seen corresponding path program 25 times [2021-10-08 17:40:13,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:13,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937191475] [2021-10-08 17:40:13,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:40:13,550 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:13,551 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:13,564 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 17:40:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:40:14,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:40:14,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:15,074 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:15,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:16,276 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:16,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937191475] [2021-10-08 17:40:16,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937191475] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:16,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:16,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:40:16,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810253609] [2021-10-08 17:40:16,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:16,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:16,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:16,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:16,279 INFO L87 Difference]: Start difference. First operand 296 states and 980 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:26,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:26,087 INFO L93 Difference]: Finished difference Result 765 states and 1855 transitions. [2021-10-08 17:40:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 17:40:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:40:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:26,091 INFO L225 Difference]: With dead ends: 765 [2021-10-08 17:40:26,091 INFO L226 Difference]: Without dead ends: 740 [2021-10-08 17:40:26,092 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1570 ImplicationChecksByTransitivity, 9154.9ms TimeCoverageRelationStatistics Valid=1129, Invalid=4421, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 17:40:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-08 17:40:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 292. [2021-10-08 17:40:26,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.3058419243986252) internal successors, (962), 291 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:26,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 962 transitions. [2021-10-08 17:40:26,105 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 962 transitions. Word has length 18 [2021-10-08 17:40:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:26,105 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 962 transitions. [2021-10-08 17:40:26,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 962 transitions. [2021-10-08 17:40:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:40:26,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:26,107 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:26,121 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:26,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:40:26,312 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:40:26,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:26,312 INFO L82 PathProgramCache]: Analyzing trace with hash -952062305, now seen corresponding path program 32 times [2021-10-08 17:40:26,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:26,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1508674522] [2021-10-08 17:40:26,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:40:26,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:26,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:26,315 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:26,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 17:40:27,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:40:27,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:27,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:40:27,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:28,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:29,486 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:29,486 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:29,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1508674522] [2021-10-08 17:40:29,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1508674522] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:29,487 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:29,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:40:29,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716337475] [2021-10-08 17:40:29,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:29,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:29,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:29,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:29,488 INFO L87 Difference]: Start difference. First operand 292 states and 962 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:38,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:38,920 INFO L93 Difference]: Finished difference Result 675 states and 1746 transitions. [2021-10-08 17:40:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 17:40:38,922 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:40:38,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:38,924 INFO L225 Difference]: With dead ends: 675 [2021-10-08 17:40:38,924 INFO L226 Difference]: Without dead ends: 660 [2021-10-08 17:40:38,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 9350.7ms TimeCoverageRelationStatistics Valid=873, Invalid=3549, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 17:40:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-08 17:40:38,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 294. [2021-10-08 17:40:38,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.3139931740614332) internal successors, (971), 293 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 971 transitions. [2021-10-08 17:40:38,933 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 971 transitions. Word has length 18 [2021-10-08 17:40:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:38,933 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 971 transitions. [2021-10-08 17:40:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 971 transitions. [2021-10-08 17:40:38,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:40:38,934 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:38,935 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:38,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:39,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:40:39,137 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:40:39,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:39,137 INFO L82 PathProgramCache]: Analyzing trace with hash -186210980, now seen corresponding path program 26 times [2021-10-08 17:40:39,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:39,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522926431] [2021-10-08 17:40:39,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:40:39,139 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:39,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:39,140 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:39,141 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 17:40:40,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:40:40,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:40,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:40:40,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:40,840 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:40,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:42,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:42,248 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522926431] [2021-10-08 17:40:42,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522926431] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:42,248 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:42,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:40:42,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441834742] [2021-10-08 17:40:42,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:42,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:42,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:42,249 INFO L87 Difference]: Start difference. First operand 294 states and 971 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:40:49,496 INFO L93 Difference]: Finished difference Result 524 states and 1445 transitions. [2021-10-08 17:40:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-08 17:40:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:40:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:40:49,498 INFO L225 Difference]: With dead ends: 524 [2021-10-08 17:40:49,498 INFO L226 Difference]: Without dead ends: 514 [2021-10-08 17:40:49,499 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 7172.5ms TimeCoverageRelationStatistics Valid=848, Invalid=2934, Unknown=0, NotChecked=0, Total=3782 [2021-10-08 17:40:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-08 17:40:49,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 294. [2021-10-08 17:40:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.3139931740614332) internal successors, (971), 293 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:49,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 971 transitions. [2021-10-08 17:40:49,507 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 971 transitions. Word has length 18 [2021-10-08 17:40:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:40:49,507 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 971 transitions. [2021-10-08 17:40:49,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:40:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 971 transitions. [2021-10-08 17:40:49,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:40:49,508 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:40:49,508 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:40:49,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 17:40:49,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:40:49,709 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:40:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:40:49,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1723916802, now seen corresponding path program 33 times [2021-10-08 17:40:49,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:40:49,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056857565] [2021-10-08 17:40:49,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:40:49,711 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:40:49,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:40:49,712 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:40:49,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 17:40:50,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:40:50,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:40:50,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 17:40:50,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:40:51,463 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:51,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:40:52,917 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:40:52,917 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:40:52,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056857565] [2021-10-08 17:40:52,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056857565] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:40:52,918 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:40:52,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:40:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090373697] [2021-10-08 17:40:52,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:40:52,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:40:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:40:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:40:52,919 INFO L87 Difference]: Start difference. First operand 294 states and 971 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:06,681 INFO L93 Difference]: Finished difference Result 646 states and 1618 transitions. [2021-10-08 17:41:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-08 17:41:06,682 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:41:06,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:06,692 INFO L225 Difference]: With dead ends: 646 [2021-10-08 17:41:06,692 INFO L226 Difference]: Without dead ends: 622 [2021-10-08 17:41:06,692 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 13440.3ms TimeCoverageRelationStatistics Valid=1310, Invalid=4240, Unknown=0, NotChecked=0, Total=5550 [2021-10-08 17:41:06,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-10-08 17:41:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 322. [2021-10-08 17:41:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.336448598130841) internal successors, (1071), 321 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:06,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 1071 transitions. [2021-10-08 17:41:06,700 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 1071 transitions. Word has length 18 [2021-10-08 17:41:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:06,701 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 1071 transitions. [2021-10-08 17:41:06,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:06,701 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 1071 transitions. [2021-10-08 17:41:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:41:06,702 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:06,702 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:06,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:06,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:41:06,903 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:41:06,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:06,903 INFO L82 PathProgramCache]: Analyzing trace with hash -805135108, now seen corresponding path program 34 times [2021-10-08 17:41:06,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:06,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [259307907] [2021-10-08 17:41:06,904 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:41:06,905 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:06,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:06,906 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:41:06,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 17:41:08,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:41:08,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:08,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:41:08,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:08,619 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:08,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:09,896 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:09,896 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:09,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [259307907] [2021-10-08 17:41:09,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [259307907] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:09,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:09,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:41:09,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680503634] [2021-10-08 17:41:09,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:41:09,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:09,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:41:09,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:41:09,899 INFO L87 Difference]: Start difference. First operand 322 states and 1071 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:21,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:21,907 INFO L93 Difference]: Finished difference Result 587 states and 1529 transitions. [2021-10-08 17:41:21,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-10-08 17:41:21,908 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:41:21,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:21,911 INFO L225 Difference]: With dead ends: 587 [2021-10-08 17:41:21,911 INFO L226 Difference]: Without dead ends: 572 [2021-10-08 17:41:21,911 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1342 ImplicationChecksByTransitivity, 11675.0ms TimeCoverageRelationStatistics Valid=864, Invalid=3828, Unknown=0, NotChecked=0, Total=4692 [2021-10-08 17:41:21,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-08 17:41:21,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 324. [2021-10-08 17:41:21,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 3.343653250773994) internal successors, (1080), 323 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:21,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 1080 transitions. [2021-10-08 17:41:21,919 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 1080 transitions. Word has length 18 [2021-10-08 17:41:21,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:21,919 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 1080 transitions. [2021-10-08 17:41:21,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:21,919 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 1080 transitions. [2021-10-08 17:41:21,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:41:21,920 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:21,920 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:21,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:22,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:41:22,121 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:41:22,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:22,122 INFO L82 PathProgramCache]: Analyzing trace with hash 69617816, now seen corresponding path program 27 times [2021-10-08 17:41:22,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:22,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [303970612] [2021-10-08 17:41:22,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:41:22,124 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:22,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:22,125 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:41:22,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 17:41:23,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:41:23,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:23,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:41:23,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:23,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:23,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:25,392 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:25,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:25,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [303970612] [2021-10-08 17:41:25,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [303970612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:25,393 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:25,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:41:25,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067672422] [2021-10-08 17:41:25,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:41:25,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:25,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:41:25,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:41:25,394 INFO L87 Difference]: Start difference. First operand 324 states and 1080 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:35,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:35,353 INFO L93 Difference]: Finished difference Result 669 states and 1731 transitions. [2021-10-08 17:41:35,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-08 17:41:35,354 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:41:35,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:35,356 INFO L225 Difference]: With dead ends: 669 [2021-10-08 17:41:35,356 INFO L226 Difference]: Without dead ends: 649 [2021-10-08 17:41:35,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 9749.1ms TimeCoverageRelationStatistics Valid=629, Invalid=1821, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 17:41:35,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-10-08 17:41:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 338. [2021-10-08 17:41:35,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.391691394658754) internal successors, (1143), 337 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:35,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1143 transitions. [2021-10-08 17:41:35,364 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1143 transitions. Word has length 18 [2021-10-08 17:41:35,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:35,364 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1143 transitions. [2021-10-08 17:41:35,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:35,365 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1143 transitions. [2021-10-08 17:41:35,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:41:35,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:35,366 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:35,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:35,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:41:35,567 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:41:35,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:35,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1787366876, now seen corresponding path program 28 times [2021-10-08 17:41:35,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:35,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709756118] [2021-10-08 17:41:35,569 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:41:35,569 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:35,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:35,570 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:41:35,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 17:41:36,874 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:41:36,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:36,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:41:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:37,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:38,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:38,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709756118] [2021-10-08 17:41:38,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709756118] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:38,510 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:38,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:41:38,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900765077] [2021-10-08 17:41:38,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:41:38,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:38,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:41:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:41:38,511 INFO L87 Difference]: Start difference. First operand 338 states and 1143 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:47,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:41:47,657 INFO L93 Difference]: Finished difference Result 709 states and 1767 transitions. [2021-10-08 17:41:47,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-08 17:41:47,658 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:41:47,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:41:47,660 INFO L225 Difference]: With dead ends: 709 [2021-10-08 17:41:47,660 INFO L226 Difference]: Without dead ends: 684 [2021-10-08 17:41:47,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 8420.9ms TimeCoverageRelationStatistics Valid=927, Invalid=3105, Unknown=0, NotChecked=0, Total=4032 [2021-10-08 17:41:47,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-08 17:41:47,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 330. [2021-10-08 17:41:47,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.364741641337386) internal successors, (1107), 329 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:47,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1107 transitions. [2021-10-08 17:41:47,669 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1107 transitions. Word has length 18 [2021-10-08 17:41:47,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:41:47,669 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1107 transitions. [2021-10-08 17:41:47,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:41:47,669 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1107 transitions. [2021-10-08 17:41:47,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:41:47,670 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:41:47,670 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:41:47,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 17:41:47,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:41:47,871 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:41:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:41:47,872 INFO L82 PathProgramCache]: Analyzing trace with hash 70430268, now seen corresponding path program 35 times [2021-10-08 17:41:47,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:41:47,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [169497271] [2021-10-08 17:41:47,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:41:47,873 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:41:47,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:41:47,874 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:41:47,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 17:41:49,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:41:49,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:41:49,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 30 conjunts are in the unsatisfiable core [2021-10-08 17:41:49,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:41:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:49,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:41:51,190 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:41:51,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:41:51,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [169497271] [2021-10-08 17:41:51,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [169497271] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:41:51,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:41:51,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:41:51,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035508916] [2021-10-08 17:41:51,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:41:51,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:41:51,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:41:51,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:41:51,193 INFO L87 Difference]: Start difference. First operand 330 states and 1107 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:05,400 INFO L93 Difference]: Finished difference Result 684 states and 1741 transitions. [2021-10-08 17:42:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 17:42:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:42:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:05,403 INFO L225 Difference]: With dead ends: 684 [2021-10-08 17:42:05,403 INFO L226 Difference]: Without dead ends: 660 [2021-10-08 17:42:05,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1238 ImplicationChecksByTransitivity, 13760.2ms TimeCoverageRelationStatistics Valid=1159, Invalid=3671, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 17:42:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-08 17:42:05,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 338. [2021-10-08 17:42:05,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 3.379821958456973) internal successors, (1139), 337 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:05,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 1139 transitions. [2021-10-08 17:42:05,412 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 1139 transitions. Word has length 18 [2021-10-08 17:42:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:05,412 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 1139 transitions. [2021-10-08 17:42:05,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:05,412 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 1139 transitions. [2021-10-08 17:42:05,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:42:05,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:05,413 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:05,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:05,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:42:05,619 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:42:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1836345654, now seen corresponding path program 36 times [2021-10-08 17:42:05,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:05,620 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578656960] [2021-10-08 17:42:05,620 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:42:05,620 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:05,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:05,623 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:42:05,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 17:42:07,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:42:07,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:07,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 32 conjunts are in the unsatisfiable core [2021-10-08 17:42:07,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:07,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:09,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:09,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:09,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578656960] [2021-10-08 17:42:09,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578656960] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:09,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:09,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:42:09,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178099787] [2021-10-08 17:42:09,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:42:09,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:09,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:42:09,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:42:09,288 INFO L87 Difference]: Start difference. First operand 338 states and 1139 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:20,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:20,201 INFO L93 Difference]: Finished difference Result 537 states and 1481 transitions. [2021-10-08 17:42:20,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-08 17:42:20,202 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:42:20,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:20,204 INFO L225 Difference]: With dead ends: 537 [2021-10-08 17:42:20,204 INFO L226 Difference]: Without dead ends: 522 [2021-10-08 17:42:20,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 10984.5ms TimeCoverageRelationStatistics Valid=769, Invalid=2537, Unknown=0, NotChecked=0, Total=3306 [2021-10-08 17:42:20,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-10-08 17:42:20,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 330. [2021-10-08 17:42:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.364741641337386) internal successors, (1107), 329 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1107 transitions. [2021-10-08 17:42:20,219 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1107 transitions. Word has length 18 [2021-10-08 17:42:20,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:20,220 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1107 transitions. [2021-10-08 17:42:20,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:20,220 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1107 transitions. [2021-10-08 17:42:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:42:20,221 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:20,221 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:20,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Ended with exit code 0 [2021-10-08 17:42:20,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:42:20,422 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:42:20,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:20,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1329999388, now seen corresponding path program 37 times [2021-10-08 17:42:20,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:20,423 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52732270] [2021-10-08 17:42:20,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:42:20,424 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:20,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:20,426 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:42:20,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 17:42:21,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:42:21,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:42:21,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:22,120 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:22,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:23,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:23,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52732270] [2021-10-08 17:42:23,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52732270] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:23,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:23,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:42:23,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857927008] [2021-10-08 17:42:23,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:42:23,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:23,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:42:23,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:42:23,365 INFO L87 Difference]: Start difference. First operand 330 states and 1107 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:34,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:34,376 INFO L93 Difference]: Finished difference Result 605 states and 1644 transitions. [2021-10-08 17:42:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:42:34,378 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:42:34,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:34,380 INFO L225 Difference]: With dead ends: 605 [2021-10-08 17:42:34,380 INFO L226 Difference]: Without dead ends: 590 [2021-10-08 17:42:34,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 10486.4ms TimeCoverageRelationStatistics Valid=755, Invalid=3405, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 17:42:34,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-10-08 17:42:34,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 350. [2021-10-08 17:42:34,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 3.4297994269340975) internal successors, (1197), 349 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:34,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 1197 transitions. [2021-10-08 17:42:34,390 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 1197 transitions. Word has length 18 [2021-10-08 17:42:34,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:34,390 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 1197 transitions. [2021-10-08 17:42:34,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:34,391 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 1197 transitions. [2021-10-08 17:42:34,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:42:34,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:34,392 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:34,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:34,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:42:34,605 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:42:34,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:34,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1898801625, now seen corresponding path program 38 times [2021-10-08 17:42:34,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:34,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298798426] [2021-10-08 17:42:34,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:42:34,607 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:34,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:34,609 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:42:34,616 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 17:42:36,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:42:36,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:36,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:42:36,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:36,955 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:36,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:38,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:38,529 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298798426] [2021-10-08 17:42:38,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298798426] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:38,529 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:38,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:42:38,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787461420] [2021-10-08 17:42:38,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:42:38,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:38,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:42:38,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:42:38,531 INFO L87 Difference]: Start difference. First operand 350 states and 1197 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:46,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:46,189 INFO L93 Difference]: Finished difference Result 519 states and 1474 transitions. [2021-10-08 17:42:46,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 17:42:46,191 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:42:46,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:46,192 INFO L225 Difference]: With dead ends: 519 [2021-10-08 17:42:46,192 INFO L226 Difference]: Without dead ends: 504 [2021-10-08 17:42:46,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 7852.7ms TimeCoverageRelationStatistics Valid=493, Invalid=2263, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:42:46,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-08 17:42:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 356. [2021-10-08 17:42:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 355 states have (on average 3.397183098591549) internal successors, (1206), 355 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:46,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 1206 transitions. [2021-10-08 17:42:46,200 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 1206 transitions. Word has length 18 [2021-10-08 17:42:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:46,200 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 1206 transitions. [2021-10-08 17:42:46,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 1206 transitions. [2021-10-08 17:42:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:42:46,201 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:46,201 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:46,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:46,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:42:46,402 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:42:46,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:46,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1969423268, now seen corresponding path program 29 times [2021-10-08 17:42:46,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:46,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66209087] [2021-10-08 17:42:46,404 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:42:46,404 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:46,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:46,406 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:42:46,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 17:42:47,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:42:47,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:47,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:42:47,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:48,258 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:48,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:42:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:49,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:42:49,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66209087] [2021-10-08 17:42:49,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66209087] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:42:49,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:42:49,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:42:49,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56390966] [2021-10-08 17:42:49,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:42:49,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:42:49,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:42:49,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:42:49,817 INFO L87 Difference]: Start difference. First operand 356 states and 1206 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:56,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:42:56,028 INFO L93 Difference]: Finished difference Result 492 states and 1424 transitions. [2021-10-08 17:42:56,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 17:42:56,030 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:42:56,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:42:56,031 INFO L225 Difference]: With dead ends: 492 [2021-10-08 17:42:56,032 INFO L226 Difference]: Without dead ends: 472 [2021-10-08 17:42:56,032 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 6295.9ms TimeCoverageRelationStatistics Valid=461, Invalid=1701, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 17:42:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-08 17:42:56,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 362. [2021-10-08 17:42:56,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 361 states have (on average 3.365650969529086) internal successors, (1215), 361 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:56,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1215 transitions. [2021-10-08 17:42:56,044 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1215 transitions. Word has length 18 [2021-10-08 17:42:56,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:42:56,044 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 1215 transitions. [2021-10-08 17:42:56,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:42:56,045 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1215 transitions. [2021-10-08 17:42:56,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:42:56,046 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:42:56,046 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:42:56,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 17:42:56,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:42:56,247 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:42:56,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:42:56,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1226011361, now seen corresponding path program 39 times [2021-10-08 17:42:56,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:42:56,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381356688] [2021-10-08 17:42:56,249 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:42:56,249 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:42:56,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:42:56,250 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:42:56,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 17:42:57,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 17:42:57,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:42:57,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 17:42:57,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:42:58,247 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:42:58,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:00,236 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:00,236 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:00,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381356688] [2021-10-08 17:43:00,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381356688] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:00,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:00,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:43:00,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131387409] [2021-10-08 17:43:00,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:43:00,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:00,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:43:00,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:43:00,239 INFO L87 Difference]: Start difference. First operand 362 states and 1215 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:11,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:11,664 INFO L93 Difference]: Finished difference Result 704 states and 1936 transitions. [2021-10-08 17:43:11,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 17:43:11,665 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:43:11,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:11,667 INFO L225 Difference]: With dead ends: 704 [2021-10-08 17:43:11,667 INFO L226 Difference]: Without dead ends: 694 [2021-10-08 17:43:11,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 11025.8ms TimeCoverageRelationStatistics Valid=628, Invalid=2024, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 17:43:11,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2021-10-08 17:43:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 414. [2021-10-08 17:43:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.4745762711864407) internal successors, (1435), 413 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:11,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1435 transitions. [2021-10-08 17:43:11,680 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1435 transitions. Word has length 18 [2021-10-08 17:43:11,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:11,680 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1435 transitions. [2021-10-08 17:43:11,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:11,680 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1435 transitions. [2021-10-08 17:43:11,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:43:11,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:11,681 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:11,698 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:11,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:43:11,882 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:43:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:11,883 INFO L82 PathProgramCache]: Analyzing trace with hash -460160036, now seen corresponding path program 30 times [2021-10-08 17:43:11,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:11,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1772738771] [2021-10-08 17:43:11,884 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:43:11,884 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:11,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:11,885 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:43:11,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 17:43:13,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:43:13,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:13,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:43:13,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:13,913 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:13,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:15,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:15,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1772738771] [2021-10-08 17:43:15,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1772738771] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:15,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:15,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:43:15,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361173833] [2021-10-08 17:43:15,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:43:15,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:15,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:43:15,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:43:15,519 INFO L87 Difference]: Start difference. First operand 414 states and 1435 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:24,035 INFO L93 Difference]: Finished difference Result 646 states and 1832 transitions. [2021-10-08 17:43:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-08 17:43:24,036 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:43:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:24,039 INFO L225 Difference]: With dead ends: 646 [2021-10-08 17:43:24,039 INFO L226 Difference]: Without dead ends: 636 [2021-10-08 17:43:24,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 7987.4ms TimeCoverageRelationStatistics Valid=655, Invalid=2101, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:43:24,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-10-08 17:43:24,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 414. [2021-10-08 17:43:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.4745762711864407) internal successors, (1435), 413 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:24,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1435 transitions. [2021-10-08 17:43:24,051 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1435 transitions. Word has length 18 [2021-10-08 17:43:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:24,051 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1435 transitions. [2021-10-08 17:43:24,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1435 transitions. [2021-10-08 17:43:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:43:24,053 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:24,053 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:24,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:24,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:43:24,254 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:43:24,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:24,254 INFO L82 PathProgramCache]: Analyzing trace with hash 351955266, now seen corresponding path program 40 times [2021-10-08 17:43:24,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:24,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221333211] [2021-10-08 17:43:24,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:43:24,255 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:24,257 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:43:24,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 17:43:25,758 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:43:25,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:25,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:43:25,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:26,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:26,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:27,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:27,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221333211] [2021-10-08 17:43:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221333211] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:27,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:27,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:43:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720262836] [2021-10-08 17:43:27,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:43:27,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:43:27,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:43:27,727 INFO L87 Difference]: Start difference. First operand 414 states and 1435 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:43:41,347 INFO L93 Difference]: Finished difference Result 814 states and 2225 transitions. [2021-10-08 17:43:41,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-08 17:43:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:43:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:43:41,353 INFO L225 Difference]: With dead ends: 814 [2021-10-08 17:43:41,354 INFO L226 Difference]: Without dead ends: 790 [2021-10-08 17:43:41,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 13104.6ms TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2021-10-08 17:43:41,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-10-08 17:43:41,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 442. [2021-10-08 17:43:41,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.5215419501133787) internal successors, (1553), 441 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:41,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1553 transitions. [2021-10-08 17:43:41,370 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1553 transitions. Word has length 18 [2021-10-08 17:43:41,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:43:41,370 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1553 transitions. [2021-10-08 17:43:41,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:43:41,370 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1553 transitions. [2021-10-08 17:43:41,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:43:41,372 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:43:41,372 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:43:41,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-08 17:43:41,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:43:41,586 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:43:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:43:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash -744743967, now seen corresponding path program 41 times [2021-10-08 17:43:41,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:43:41,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376670195] [2021-10-08 17:43:41,587 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:43:41,588 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:43:41,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:43:41,589 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:43:41,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 17:43:43,110 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 17:43:43,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:43:43,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 17:43:43,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:43:43,627 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:43,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:43:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:43:45,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:43:45,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376670195] [2021-10-08 17:43:45,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376670195] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:43:45,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:43:45,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:43:45,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403282985] [2021-10-08 17:43:45,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:43:45,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:43:45,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:43:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:43:45,419 INFO L87 Difference]: Start difference. First operand 442 states and 1553 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:00,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:00,286 INFO L93 Difference]: Finished difference Result 847 states and 2297 transitions. [2021-10-08 17:44:00,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-08 17:44:00,286 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:44:00,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:00,288 INFO L225 Difference]: With dead ends: 847 [2021-10-08 17:44:00,288 INFO L226 Difference]: Without dead ends: 824 [2021-10-08 17:44:00,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 14397.2ms TimeCoverageRelationStatistics Valid=1065, Invalid=3357, Unknown=0, NotChecked=0, Total=4422 [2021-10-08 17:44:00,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-10-08 17:44:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 464. [2021-10-08 17:44:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.5550755939524836) internal successors, (1646), 463 states have internal predecessors, (1646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:00,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1646 transitions. [2021-10-08 17:44:00,300 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1646 transitions. Word has length 18 [2021-10-08 17:44:00,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:00,300 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1646 transitions. [2021-10-08 17:44:00,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:00,300 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1646 transitions. [2021-10-08 17:44:00,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:44:00,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:00,301 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:00,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:00,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:44:00,502 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:44:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:00,503 INFO L82 PathProgramCache]: Analyzing trace with hash 973005093, now seen corresponding path program 42 times [2021-10-08 17:44:00,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:00,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [206330154] [2021-10-08 17:44:00,504 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 17:44:00,504 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:00,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:00,506 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:44:00,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 17:44:02,113 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 17:44:02,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:02,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-08 17:44:02,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:02,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:04,156 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:04,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:04,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [206330154] [2021-10-08 17:44:04,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [206330154] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:04,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:04,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:44:04,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688283479] [2021-10-08 17:44:04,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:04,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:04,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:04,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:04,158 INFO L87 Difference]: Start difference. First operand 464 states and 1646 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:17,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:17,658 INFO L93 Difference]: Finished difference Result 843 states and 2301 transitions. [2021-10-08 17:44:17,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-08 17:44:17,659 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:44:17,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:17,662 INFO L225 Difference]: With dead ends: 843 [2021-10-08 17:44:17,662 INFO L226 Difference]: Without dead ends: 828 [2021-10-08 17:44:17,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 13052.4ms TimeCoverageRelationStatistics Valid=1075, Invalid=3481, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 17:44:17,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2021-10-08 17:44:17,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 458. [2021-10-08 17:44:17,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.5426695842450764) internal successors, (1619), 457 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1619 transitions. [2021-10-08 17:44:17,675 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1619 transitions. Word has length 18 [2021-10-08 17:44:17,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:17,676 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1619 transitions. [2021-10-08 17:44:17,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:17,676 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1619 transitions. [2021-10-08 17:44:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:44:17,678 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:17,678 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:17,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:17,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:44:17,893 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:44:17,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:17,894 INFO L82 PathProgramCache]: Analyzing trace with hash -2114640673, now seen corresponding path program 43 times [2021-10-08 17:44:17,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:17,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460760036] [2021-10-08 17:44:17,894 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:44:17,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:17,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:17,896 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:44:17,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 17:44:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:44:19,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:44:19,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:19,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:21,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:21,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:21,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460760036] [2021-10-08 17:44:21,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460760036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:21,598 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:21,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:44:21,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742119129] [2021-10-08 17:44:21,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:21,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:21,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:21,600 INFO L87 Difference]: Start difference. First operand 458 states and 1619 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:30,132 INFO L93 Difference]: Finished difference Result 627 states and 1886 transitions. [2021-10-08 17:44:30,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:44:30,134 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:44:30,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:30,137 INFO L225 Difference]: With dead ends: 627 [2021-10-08 17:44:30,137 INFO L226 Difference]: Without dead ends: 612 [2021-10-08 17:44:30,137 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 8211.6ms TimeCoverageRelationStatistics Valid=508, Invalid=2248, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:44:30,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-10-08 17:44:30,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 458. [2021-10-08 17:44:30,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.5426695842450764) internal successors, (1619), 457 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:30,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1619 transitions. [2021-10-08 17:44:30,150 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1619 transitions. Word has length 18 [2021-10-08 17:44:30,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:30,151 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1619 transitions. [2021-10-08 17:44:30,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:30,151 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1619 transitions. [2021-10-08 17:44:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:44:30,153 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:30,153 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:30,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:30,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:44:30,367 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:44:30,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:30,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1687898270, now seen corresponding path program 31 times [2021-10-08 17:44:30,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:30,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215524673] [2021-10-08 17:44:30,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 17:44:30,369 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:30,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:30,370 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:44:30,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 17:44:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 17:44:31,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 17:44:31,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:32,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:33,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:33,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215524673] [2021-10-08 17:44:33,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215524673] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:33,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:33,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:44:33,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963186134] [2021-10-08 17:44:33,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:33,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:33,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:33,548 INFO L87 Difference]: Start difference. First operand 458 states and 1619 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:38,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:38,819 INFO L93 Difference]: Finished difference Result 587 states and 1819 transitions. [2021-10-08 17:44:38,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 17:44:38,820 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:44:38,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:38,821 INFO L225 Difference]: With dead ends: 587 [2021-10-08 17:44:38,821 INFO L226 Difference]: Without dead ends: 562 [2021-10-08 17:44:38,822 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 5128.3ms TimeCoverageRelationStatistics Valid=448, Invalid=1622, Unknown=0, NotChecked=0, Total=2070 [2021-10-08 17:44:38,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-08 17:44:38,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 458. [2021-10-08 17:44:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.5426695842450764) internal successors, (1619), 457 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:38,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1619 transitions. [2021-10-08 17:44:38,831 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1619 transitions. Word has length 18 [2021-10-08 17:44:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:38,831 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1619 transitions. [2021-10-08 17:44:38,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1619 transitions. [2021-10-08 17:44:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:44:38,833 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:38,833 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:38,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-08 17:44:39,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:44:39,034 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:44:39,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:39,034 INFO L82 PathProgramCache]: Analyzing trace with hash 4299481, now seen corresponding path program 44 times [2021-10-08 17:44:39,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:39,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1568968878] [2021-10-08 17:44:39,036 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:44:39,036 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:39,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:39,038 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:44:39,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 17:44:40,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:44:40,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:40,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:44:40,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:41,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:42,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:42,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1568968878] [2021-10-08 17:44:42,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1568968878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:42,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:42,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:44:42,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157933915] [2021-10-08 17:44:42,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:42,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:42,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:42,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:42,700 INFO L87 Difference]: Start difference. First operand 458 states and 1619 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:44:54,108 INFO L93 Difference]: Finished difference Result 771 states and 2248 transitions. [2021-10-08 17:44:54,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 17:44:54,109 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:44:54,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:44:54,111 INFO L225 Difference]: With dead ends: 771 [2021-10-08 17:44:54,111 INFO L226 Difference]: Without dead ends: 756 [2021-10-08 17:44:54,112 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 11318.6ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 17:44:54,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-10-08 17:44:54,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 478. [2021-10-08 17:44:54,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 3.6058700209643604) internal successors, (1720), 477 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 1720 transitions. [2021-10-08 17:44:54,123 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 1720 transitions. Word has length 18 [2021-10-08 17:44:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:44:54,123 INFO L470 AbstractCegarLoop]: Abstraction has 478 states and 1720 transitions. [2021-10-08 17:44:54,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:44:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 1720 transitions. [2021-10-08 17:44:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:44:54,125 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:44:54,125 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:44:54,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Ended with exit code 0 [2021-10-08 17:44:54,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:44:54,326 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:44:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:44:54,326 INFO L82 PathProgramCache]: Analyzing trace with hash 770150806, now seen corresponding path program 32 times [2021-10-08 17:44:54,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:44:54,327 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842992298] [2021-10-08 17:44:54,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 17:44:54,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:44:54,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:44:54,329 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:44:54,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-08 17:44:55,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 17:44:55,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:44:55,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-08 17:44:55,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:44:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:56,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:44:57,916 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:44:57,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:44:57,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842992298] [2021-10-08 17:44:57,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842992298] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:44:57,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:44:57,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:44:57,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034832207] [2021-10-08 17:44:57,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:44:57,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:44:57,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:44:57,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:44:57,918 INFO L87 Difference]: Start difference. First operand 478 states and 1720 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:05,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:05,699 INFO L93 Difference]: Finished difference Result 672 states and 2058 transitions. [2021-10-08 17:45:05,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:45:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:45:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:05,701 INFO L225 Difference]: With dead ends: 672 [2021-10-08 17:45:05,702 INFO L226 Difference]: Without dead ends: 662 [2021-10-08 17:45:05,702 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 608 ImplicationChecksByTransitivity, 7722.5ms TimeCoverageRelationStatistics Valid=637, Invalid=2119, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:45:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-10-08 17:45:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 464. [2021-10-08 17:45:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.5788336933045355) internal successors, (1657), 463 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:05,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1657 transitions. [2021-10-08 17:45:05,711 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1657 transitions. Word has length 18 [2021-10-08 17:45:05,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:05,712 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1657 transitions. [2021-10-08 17:45:05,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:05,712 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1657 transitions. [2021-10-08 17:45:05,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:45:05,713 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:05,713 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:05,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:05,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:45:05,914 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:45:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1582266108, now seen corresponding path program 45 times [2021-10-08 17:45:05,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:05,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338643475] [2021-10-08 17:45:05,915 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 17:45:05,916 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:05,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:05,917 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:45:05,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-08 17:45:07,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 17:45:07,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:07,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-08 17:45:07,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:08,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:09,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:09,628 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:09,629 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338643475] [2021-10-08 17:45:09,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338643475] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:09,629 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:09,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:45:09,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037174202] [2021-10-08 17:45:09,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:45:09,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:09,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:45:09,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:45:09,630 INFO L87 Difference]: Start difference. First operand 464 states and 1657 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:19,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:19,069 INFO L93 Difference]: Finished difference Result 764 states and 2188 transitions. [2021-10-08 17:45:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 17:45:19,070 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:45:19,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:19,072 INFO L225 Difference]: With dead ends: 764 [2021-10-08 17:45:19,072 INFO L226 Difference]: Without dead ends: 740 [2021-10-08 17:45:19,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 9076.9ms TimeCoverageRelationStatistics Valid=735, Invalid=2021, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 17:45:19,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-08 17:45:19,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 436. [2021-10-08 17:45:19,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.528735632183908) internal successors, (1535), 435 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:19,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1535 transitions. [2021-10-08 17:45:19,082 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1535 transitions. Word has length 18 [2021-10-08 17:45:19,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:19,083 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1535 transitions. [2021-10-08 17:45:19,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:19,083 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1535 transitions. [2021-10-08 17:45:19,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:45:19,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:19,084 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:19,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:19,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:45:19,285 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:45:19,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:19,286 INFO L82 PathProgramCache]: Analyzing trace with hash 485566875, now seen corresponding path program 46 times [2021-10-08 17:45:19,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:19,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459793770] [2021-10-08 17:45:19,286 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 17:45:19,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:19,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:19,288 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:45:19,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-08 17:45:20,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 17:45:20,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:20,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-08 17:45:20,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:21,436 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:21,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:23,010 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:23,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459793770] [2021-10-08 17:45:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459793770] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:23,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:23,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:45:23,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206901588] [2021-10-08 17:45:23,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:45:23,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:23,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:45:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:45:23,013 INFO L87 Difference]: Start difference. First operand 436 states and 1535 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 17:45:39,775 INFO L93 Difference]: Finished difference Result 871 states and 2341 transitions. [2021-10-08 17:45:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-08 17:45:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 17:45:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 17:45:39,779 INFO L225 Difference]: With dead ends: 871 [2021-10-08 17:45:39,779 INFO L226 Difference]: Without dead ends: 848 [2021-10-08 17:45:39,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1668 ImplicationChecksByTransitivity, 16137.5ms TimeCoverageRelationStatistics Valid=1298, Invalid=4554, Unknown=0, NotChecked=0, Total=5852 [2021-10-08 17:45:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-10-08 17:45:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 458. [2021-10-08 17:45:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 457 states have (on average 3.562363238512035) internal successors, (1628), 457 states have internal predecessors, (1628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1628 transitions. [2021-10-08 17:45:39,792 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1628 transitions. Word has length 18 [2021-10-08 17:45:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 17:45:39,792 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 1628 transitions. [2021-10-08 17:45:39,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 17:45:39,792 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1628 transitions. [2021-10-08 17:45:39,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 17:45:39,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 17:45:39,793 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 17:45:39,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:39,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:45:39,994 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 17:45:39,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 17:45:39,995 INFO L82 PathProgramCache]: Analyzing trace with hash -2091651361, now seen corresponding path program 47 times [2021-10-08 17:45:39,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 17:45:39,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741130008] [2021-10-08 17:45:39,996 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 17:45:39,996 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 17:45:39,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 17:45:39,997 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 17:45:39,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-08 17:45:41,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 17:45:41,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 17:45:41,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-10-08 17:45:41,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 17:45:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:42,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 17:45:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 17:45:43,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 17:45:43,693 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741130008] [2021-10-08 17:45:43,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741130008] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 17:45:43,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 17:45:43,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-08 17:45:43,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765891498] [2021-10-08 17:45:43,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 17:45:43,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 17:45:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 17:45:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-08 17:45:43,695 INFO L87 Difference]: Start difference. First operand 458 states and 1628 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-08 17:45:46,970 WARN L223 SmtUtils]: Removed 12 from assertion stack [2021-10-08 17:45:46,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 17:45:46,971 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:45:46,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-08 17:45:47,010 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:45:47,010 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-08 17:45:47,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 17:45:47,172 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. [2021-10-08 17:45:47,175 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 17:45:47,175 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 17:45:47,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 17:45:47,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 17:45:47,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 17:45:47,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 17:45:47,176 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 17:45:47,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 17:45:47,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 17:45:47,177 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 17:45:47,178 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 17:45:47,182 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 17:45:47,183 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 17:45:47,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 05:45:47 BasicIcfg [2021-10-08 17:45:47,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 17:45:47,186 INFO L168 Benchmark]: Toolchain (without parser) took 817300.81 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.0 MB in the beginning and 50.4 MB in the end (delta: 75.6 MB). Peak memory consumption was 106.2 MB. Max. memory is 8.0 GB. [2021-10-08 17:45:47,186 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 17:45:47,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 433.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-08 17:45:47,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.94 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-08 17:45:47,188 INFO L168 Benchmark]: Boogie Preprocessor took 66.03 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 17:45:47,188 INFO L168 Benchmark]: RCFGBuilder took 754.97 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 129.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. [2021-10-08 17:45:47,189 INFO L168 Benchmark]: TraceAbstraction took 815949.02 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 129.2 MB in the beginning and 50.4 MB in the end (delta: 78.8 MB). Peak memory consumption was 109.8 MB. Max. memory is 8.0 GB. [2021-10-08 17:45:47,191 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 433.07 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 114.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 77.94 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 113.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.03 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 111.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 754.97 ms. Allocated memory is still 151.0 MB. Free memory was 111.8 MB in the beginning and 129.8 MB in the end (delta: -17.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 815949.02 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 129.2 MB in the beginning and 50.4 MB in the end (delta: 78.8 MB). Peak memory consumption was 109.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7838.8ms, 92 PlacesBefore, 32 PlacesAfterwards, 91 TransitionsBefore, 27 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 6 FixpointIterations, 56 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 92 TotalNumberOfCompositions, 768 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 742, positive: 739, positive conditional: 0, positive unconditional: 739, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 408, positive: 405, positive conditional: 0, positive unconditional: 405, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 408, positive: 405, positive conditional: 0, positive unconditional: 405, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 19, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 19, negative conditional: 0, negative unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 742, positive: 334, positive conditional: 0, positive unconditional: 334, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 408, unknown conditional: 0, unknown unconditional: 408] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 76]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 61]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 71]: 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 (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - TimeoutResultAtElement [Line: 70]: 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 (458states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 50 for 80ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 106 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 815821.2ms, OverallIterations: 90, TraceHistogramMax: 5, EmptinessCheckTime: 96.9ms, AutomataDifference: 588620.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7900.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4025 SDtfs, 17911 SDslu, 30081 SDs, 0 SdLazy, 31654 SolverSat, 4136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74303.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5209 GetRequests, 1208 SyntacticMatches, 0 SemanticMatches, 4000 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52961 ImplicationChecksByTransitivity, 573652.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=478occurred in iteration=86, InterpolantAutomatonStates: 3528, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 763.0ms AutomataMinimizationTime, 89 MinimizatonAttempts, 16917 StatesRemovedByMinimization, 84 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 605.7ms SsaConstructionTime, 10296.0ms SatisfiabilityAnalysisTime, 128696.1ms InterpolantComputationTime, 1426 NumberOfCodeBlocks, 1426 NumberOfCodeBlocksAsserted, 182 NumberOfCheckSat, 2672 ConstructedInterpolants, 4 QuantifiedInterpolants, 43279 SizeOfPredicates, 391 NumberOfNonLiveVariables, 6700 ConjunctsInSsa, 1847 ConjunctsInUnsatCore, 180 InterpolantComputations, 22 PerfectInterpolantSequences, 0/1224 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