/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/nonblocking-cntr-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:28:13,704 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:28:13,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:28:13,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:28:13,838 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:28:13,839 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:28:13,840 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:28:13,841 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:28:13,870 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:28:13,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:28:13,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:28:13,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:28:13,873 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:28:13,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:28:13,873 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:28:13,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:28:13,874 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:28:13,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:28:13,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:28:13,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:28:13,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:28:13,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:28:13,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:28:13,875 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:28:13,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:28:13,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:28:13,876 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:28:13,876 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:28:13,876 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:28:13,877 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:28:13,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:28:13,877 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:28:13,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:28:13,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:28:13,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:28:13,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:28:13,878 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:28:13,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:28:13,879 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:28:13,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:28:13,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:28:14,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:28:14,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:28:14,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:28:14,354 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:28:14,354 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:28:14,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/nonblocking-cntr-alt.wvr.c [2021-10-06 21:28:14,442 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8654c7b4/519931c7d43043c3af27c90237c4b8c4/FLAG6c4360f01 [2021-10-06 21:28:15,156 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:28:15,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/nonblocking-cntr-alt.wvr.c [2021-10-06 21:28:15,166 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8654c7b4/519931c7d43043c3af27c90237c4b8c4/FLAG6c4360f01 [2021-10-06 21:28:15,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c8654c7b4/519931c7d43043c3af27c90237c4b8c4 [2021-10-06 21:28:15,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:28:15,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:28:15,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:28:15,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:28:15,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:28:15,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6814df7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15, skipping insertion in model container [2021-10-06 21:28:15,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:28:15,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:28:15,736 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/nonblocking-cntr-alt.wvr.c[2046,2059] [2021-10-06 21:28:15,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:28:15,756 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:28:15,781 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/nonblocking-cntr-alt.wvr.c[2046,2059] [2021-10-06 21:28:15,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:28:15,801 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:28:15,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15 WrapperNode [2021-10-06 21:28:15,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:28:15,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:28:15,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:28:15,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:28:15,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:28:15,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:28:15,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:28:15,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:28:15,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:28:15,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:28:15,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:28:15,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:28:15,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (1/1) ... [2021-10-06 21:28:15,893 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:28:15,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:28:15,923 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) [2021-10-06 21:28:15,949 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 [2021-10-06 21:28:15,996 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:28:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:28:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:28:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:28:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:28:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:28:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:28:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:28:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:28:15,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:28:15,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:28:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:28:15,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:28:16,001 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:28:16,572 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:28:16,572 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-06 21:28:16,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:28:16 BoogieIcfgContainer [2021-10-06 21:28:16,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:28:16,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:28:16,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:28:16,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:28:16,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:28:15" (1/3) ... [2021-10-06 21:28:16,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7df7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:28:16, skipping insertion in model container [2021-10-06 21:28:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:28:15" (2/3) ... [2021-10-06 21:28:16,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c7df7df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:28:16, skipping insertion in model container [2021-10-06 21:28:16,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:28:16" (3/3) ... [2021-10-06 21:28:16,585 INFO L111 eAbstractionObserver]: Analyzing ICFG nonblocking-cntr-alt.wvr.c [2021-10-06 21:28:16,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:28:16,592 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:28:16,592 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:28:16,622 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,622 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,623 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,624 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,624 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,625 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,625 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,625 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,626 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,626 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,627 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,627 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,627 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,628 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,628 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,628 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,628 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,629 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,629 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,629 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,629 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,629 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,630 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,630 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,631 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,631 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,634 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,635 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,635 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,636 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,638 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,639 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,639 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:28:16,645 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:28:16,702 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:28:16,710 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 [2021-10-06 21:28:16,710 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:28:16,727 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:28:16,740 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 83 transitions, 182 flow [2021-10-06 21:28:16,744 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 83 transitions, 182 flow [2021-10-06 21:28:16,747 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 84 places, 83 transitions, 182 flow [2021-10-06 21:28:16,790 INFO L129 PetriNetUnfolder]: 6/81 cut-off events. [2021-10-06 21:28:16,790 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:28:16,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 81 events. 6/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-10-06 21:28:16,797 INFO L116 LiptonReduction]: Number of co-enabled transitions 462 [2021-10-06 21:28:24,228 INFO L131 LiptonReduction]: Checked pairs total: 574 [2021-10-06 21:28:24,229 INFO L133 LiptonReduction]: Total number of compositions: 86 [2021-10-06 21:28:24,239 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 21:28:24,255 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) [2021-10-06 21:28:24,257 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) [2021-10-06 21:28:24,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:28:24,263 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:24,264 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:28:24,265 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:24,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:24,271 INFO L82 PathProgramCache]: Analyzing trace with hash 345, now seen corresponding path program 1 times [2021-10-06 21:28:24,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:24,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1662279648] [2021-10-06 21:28:24,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:24,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:24,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:24,294 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) [2021-10-06 21:28:24,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:28:24,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:24,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:28:24,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:24,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:24,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:24,355 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1662279648] [2021-10-06 21:28:24,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1662279648] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:24,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:24,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:28:24,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352576260] [2021-10-06 21:28:24,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:28:24,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:24,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:28:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:28:24,383 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) [2021-10-06 21:28:24,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:24,400 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 21:28:24,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:28:24,402 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 [2021-10-06 21:28:24,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:24,414 INFO L225 Difference]: With dead ends: 64 [2021-10-06 21:28:24,414 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 21:28:24,416 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 [2021-10-06 21:28:24,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 21:28:24,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 21:28:24,454 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) [2021-10-06 21:28:24,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 21:28:24,458 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 21:28:24,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:24,459 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 21:28:24,459 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) [2021-10-06 21:28:24,459 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 21:28:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:28:24,460 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:24,460 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:28:24,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-06 21:28:24,670 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 [2021-10-06 21:28:24,671 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:24,672 INFO L82 PathProgramCache]: Analyzing trace with hash 339873, now seen corresponding path program 1 times [2021-10-06 21:28:24,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:24,673 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [176824492] [2021-10-06 21:28:24,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:24,674 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:24,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:24,675 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) [2021-10-06 21:28:24,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:28:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:24,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:24,981 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:28:24,982 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 [2021-10-06 21:28:25,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:25,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,164 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:25,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [176824492] [2021-10-06 21:28:25,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [176824492] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:25,164 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:25,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:28:25,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933874599] [2021-10-06 21:28:25,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:28:25,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:28:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:25,170 INFO L87 Difference]: Start difference. First operand 64 states and 151 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) [2021-10-06 21:28:25,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:25,214 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 21:28:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:25,219 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 [2021-10-06 21:28:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:25,225 INFO L225 Difference]: With dead ends: 58 [2021-10-06 21:28:25,225 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 21:28:25,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:28:25,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 21:28:25,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 21:28:25,242 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) [2021-10-06 21:28:25,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 21:28:25,245 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 21:28:25,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:25,246 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 21:28:25,246 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) [2021-10-06 21:28:25,246 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 21:28:25,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:28:25,247 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:25,248 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:28:25,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:25,449 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 [2021-10-06 21:28:25,450 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:25,451 INFO L82 PathProgramCache]: Analyzing trace with hash 339874, now seen corresponding path program 1 times [2021-10-06 21:28:25,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:25,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [617969009] [2021-10-06 21:28:25,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:25,453 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:25,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:25,454 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) [2021-10-06 21:28:25,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:28:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:25,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:28:25,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:25,559 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 21:28:25,560 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 [2021-10-06 21:28:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:25,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:25,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [617969009] [2021-10-06 21:28:25,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [617969009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:25,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:25,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:28:25,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437400410] [2021-10-06 21:28:25,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:28:25,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:25,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:28:25,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:25,620 INFO L87 Difference]: Start difference. First operand 58 states and 139 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) [2021-10-06 21:28:25,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:25,644 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 21:28:25,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:25,645 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 [2021-10-06 21:28:25,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:25,649 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:28:25,649 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:28:25,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:25,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:28:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:28:25,660 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) [2021-10-06 21:28:25,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 21:28:25,661 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 21:28:25,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:25,662 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 21:28:25,662 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) [2021-10-06 21:28:25,662 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 21:28:25,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:28:25,663 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:25,663 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:28:25,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:25,875 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 [2021-10-06 21:28:25,876 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash 326627287, now seen corresponding path program 1 times [2021-10-06 21:28:25,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:25,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894047655] [2021-10-06 21:28:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:25,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:25,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:25,880 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) [2021-10-06 21:28:25,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:28:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:25,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:28:25,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:25,952 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-06 21:28:25,952 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 [2021-10-06 21:28:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:25,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,001 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:26,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894047655] [2021-10-06 21:28:26,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894047655] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:26,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:26,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:28:26,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855822231] [2021-10-06 21:28:26,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:28:26,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:26,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:28:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:26,003 INFO L87 Difference]: Start difference. First operand 52 states and 127 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) [2021-10-06 21:28:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:26,023 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 21:28:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:26,024 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 [2021-10-06 21:28:26,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:26,025 INFO L225 Difference]: With dead ends: 43 [2021-10-06 21:28:26,025 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 21:28:26,026 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:26,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 21:28:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 21:28:26,030 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) [2021-10-06 21:28:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 21:28:26,031 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 21:28:26,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:26,032 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 21:28:26,033 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) [2021-10-06 21:28:26,033 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 21:28:26,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:28:26,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:26,034 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:28:26,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-06 21:28:26,245 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 [2021-10-06 21:28:26,245 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:28:26,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:26,247 INFO L82 PathProgramCache]: Analyzing trace with hash 326627288, now seen corresponding path program 1 times [2021-10-06 21:28:26,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:26,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63559972] [2021-10-06 21:28:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:26,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:26,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:26,249 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) [2021-10-06 21:28:26,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:28:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:26,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:28:26,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,483 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:26,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63559972] [2021-10-06 21:28:26,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63559972] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:26,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:26,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:28:26,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407184667] [2021-10-06 21:28:26,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:28:26,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:26,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:28:26,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:26,486 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) [2021-10-06 21:28:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:26,513 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 21:28:26,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:28:26,515 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 [2021-10-06 21:28:26,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:26,519 INFO L225 Difference]: With dead ends: 34 [2021-10-06 21:28:26,519 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 21:28:26,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:28:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 21:28:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 21:28:26,526 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) [2021-10-06 21:28:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 21:28:26,527 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 21:28:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:26,527 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 21:28:26,527 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) [2021-10-06 21:28:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 21:28:26,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:28:26,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:26,531 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:26,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:26,741 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 [2021-10-06 21:28:26,742 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)] === [2021-10-06 21:28:26,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:26,742 INFO L82 PathProgramCache]: Analyzing trace with hash -2064583427, now seen corresponding path program 1 times [2021-10-06 21:28:26,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:26,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1061128007] [2021-10-06 21:28:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:26,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:26,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:26,746 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) [2021-10-06 21:28:26,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:28:26,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:26,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:28:26,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:26,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:26,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1061128007] [2021-10-06 21:28:26,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1061128007] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:26,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:26,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-06 21:28:26,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330788591] [2021-10-06 21:28:26,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:28:26,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:28:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:26,966 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:27,022 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2021-10-06 21:28:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:28:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:28:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:27,024 INFO L225 Difference]: With dead ends: 42 [2021-10-06 21:28:27,024 INFO L226 Difference]: Without dead ends: 42 [2021-10-06 21:28:27,025 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 15.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:27,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-06 21:28:27,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-06 21:28:27,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-06 21:28:27,030 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-06 21:28:27,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:27,030 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-06 21:28:27,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,031 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-06 21:28:27,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-06 21:28:27,032 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:27,032 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:27,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:27,232 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 [2021-10-06 21:28:27,233 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)] === [2021-10-06 21:28:27,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:27,234 INFO L82 PathProgramCache]: Analyzing trace with hash -424936243, now seen corresponding path program 1 times [2021-10-06 21:28:27,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:27,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870028231] [2021-10-06 21:28:27,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:27,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:27,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:27,238 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) [2021-10-06 21:28:27,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:28:27,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:27,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:28:27,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:27,381 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:27,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:27,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:27,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870028231] [2021-10-06 21:28:27,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870028231] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:28:27,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:28:27,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-06 21:28:27,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71942208] [2021-10-06 21:28:27,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:28:27,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:28:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:27,435 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:27,485 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-06 21:28:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:28:27,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-06 21:28:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:27,487 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:28:27,488 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:28:27,488 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:28:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:28:27,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:28:27,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-06 21:28:27,493 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-06 21:28:27,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:27,494 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-06 21:28:27,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:27,494 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-06 21:28:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:27,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:27,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:27,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:27,708 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 [2021-10-06 21:28:27,709 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)] === [2021-10-06 21:28:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:27,710 INFO L82 PathProgramCache]: Analyzing trace with hash -475776984, now seen corresponding path program 1 times [2021-10-06 21:28:27,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:27,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430757099] [2021-10-06 21:28:27,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:28:27,712 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:27,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:27,713 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) [2021-10-06 21:28:27,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:28:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:27,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:27,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:28,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:29,313 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:29,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430757099] [2021-10-06 21:28:29,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430757099] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:29,314 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:29,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:29,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944627278] [2021-10-06 21:28:29,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:29,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:29,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:29,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:29,316 INFO L87 Difference]: Start difference. First operand 52 states and 116 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) [2021-10-06 21:28:32,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:32,105 INFO L93 Difference]: Finished difference Result 252 states and 520 transitions. [2021-10-06 21:28:32,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:28:32,106 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 [2021-10-06 21:28:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:32,109 INFO L225 Difference]: With dead ends: 252 [2021-10-06 21:28:32,109 INFO L226 Difference]: Without dead ends: 227 [2021-10-06 21:28:32,110 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2615.4ms TimeCoverageRelationStatistics Valid=304, Invalid=688, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:28:32,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-10-06 21:28:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 82. [2021-10-06 21:28:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 81 states have (on average 2.8271604938271606) internal successors, (229), 81 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:32,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 229 transitions. [2021-10-06 21:28:32,120 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 229 transitions. Word has length 15 [2021-10-06 21:28:32,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:32,121 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 229 transitions. [2021-10-06 21:28:32,121 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) [2021-10-06 21:28:32,121 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 229 transitions. [2021-10-06 21:28:32,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:32,122 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:32,123 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:32,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-10-06 21:28:32,335 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 [2021-10-06 21:28:32,336 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)] === [2021-10-06 21:28:32,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:32,337 INFO L82 PathProgramCache]: Analyzing trace with hash -503482614, now seen corresponding path program 2 times [2021-10-06 21:28:32,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:32,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1929244193] [2021-10-06 21:28:32,338 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:32,339 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:32,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:32,340 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) [2021-10-06 21:28:32,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:28:32,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:32,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:32,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:32,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:32,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:32,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:33,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:33,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1929244193] [2021-10-06 21:28:33,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1929244193] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:33,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:33,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:33,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686426593] [2021-10-06 21:28:33,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:33,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:33,970 INFO L87 Difference]: Start difference. First operand 82 states and 229 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) [2021-10-06 21:28:36,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:36,916 INFO L93 Difference]: Finished difference Result 267 states and 558 transitions. [2021-10-06 21:28:36,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-06 21:28:36,918 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 [2021-10-06 21:28:36,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:36,920 INFO L225 Difference]: With dead ends: 267 [2021-10-06 21:28:36,920 INFO L226 Difference]: Without dead ends: 228 [2021-10-06 21:28:36,921 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2696.5ms TimeCoverageRelationStatistics Valid=317, Invalid=739, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:28:36,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-06 21:28:36,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 100. [2021-10-06 21:28:36,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 2.5757575757575757) internal successors, (255), 99 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:36,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 255 transitions. [2021-10-06 21:28:36,945 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 255 transitions. Word has length 15 [2021-10-06 21:28:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:36,946 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 255 transitions. [2021-10-06 21:28:36,946 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) [2021-10-06 21:28:36,946 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 255 transitions. [2021-10-06 21:28:36,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:36,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:36,951 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:36,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:37,165 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 [2021-10-06 21:28:37,166 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)] === [2021-10-06 21:28:37,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:37,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1984102934, now seen corresponding path program 3 times [2021-10-06 21:28:37,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:37,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124310176] [2021-10-06 21:28:37,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:37,168 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:37,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:37,169 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) [2021-10-06 21:28:37,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:28:37,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:28:37,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:37,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:37,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:37,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:37,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:38,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:38,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124310176] [2021-10-06 21:28:38,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124310176] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:38,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:38,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:38,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546886857] [2021-10-06 21:28:38,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:38,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:38,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:38,825 INFO L87 Difference]: Start difference. First operand 100 states and 255 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) [2021-10-06 21:28:40,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:40,964 INFO L93 Difference]: Finished difference Result 212 states and 434 transitions. [2021-10-06 21:28:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:28:40,965 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 [2021-10-06 21:28:40,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:40,967 INFO L225 Difference]: With dead ends: 212 [2021-10-06 21:28:40,967 INFO L226 Difference]: Without dead ends: 194 [2021-10-06 21:28:40,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2084.2ms TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:28:40,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-10-06 21:28:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 104. [2021-10-06 21:28:40,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.5242718446601944) internal successors, (260), 103 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:40,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 260 transitions. [2021-10-06 21:28:40,977 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 260 transitions. Word has length 15 [2021-10-06 21:28:40,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:40,977 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 260 transitions. [2021-10-06 21:28:40,977 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) [2021-10-06 21:28:40,978 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 260 transitions. [2021-10-06 21:28:40,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:40,979 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:40,979 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:40,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:41,191 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 [2021-10-06 21:28:41,192 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)] === [2021-10-06 21:28:41,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:41,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1914575684, now seen corresponding path program 4 times [2021-10-06 21:28:41,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:41,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1040749900] [2021-10-06 21:28:41,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:41,194 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:41,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:41,195 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) [2021-10-06 21:28:41,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:28:41,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:41,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:41,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:41,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:41,628 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:41,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:42,657 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:42,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1040749900] [2021-10-06 21:28:42,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1040749900] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:42,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:42,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:42,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619696125] [2021-10-06 21:28:42,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:42,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:42,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:42,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:42,662 INFO L87 Difference]: Start difference. First operand 104 states and 260 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) [2021-10-06 21:28:44,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:44,707 INFO L93 Difference]: Finished difference Result 232 states and 454 transitions. [2021-10-06 21:28:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:28:44,709 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 [2021-10-06 21:28:44,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:44,711 INFO L225 Difference]: With dead ends: 232 [2021-10-06 21:28:44,711 INFO L226 Difference]: Without dead ends: 208 [2021-10-06 21:28:44,712 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1999.1ms TimeCoverageRelationStatistics Valid=275, Invalid=847, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:28:44,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-06 21:28:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 104. [2021-10-06 21:28:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.4854368932038833) internal successors, (256), 103 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:44,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 256 transitions. [2021-10-06 21:28:44,720 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 256 transitions. Word has length 15 [2021-10-06 21:28:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:44,720 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 256 transitions. [2021-10-06 21:28:44,721 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) [2021-10-06 21:28:44,721 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 256 transitions. [2021-10-06 21:28:44,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:44,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:44,722 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:44,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:44,934 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 [2021-10-06 21:28:44,935 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)] === [2021-10-06 21:28:44,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:44,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1753191486, now seen corresponding path program 5 times [2021-10-06 21:28:44,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:44,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441722710] [2021-10-06 21:28:44,937 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:44,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:44,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:44,939 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) [2021-10-06 21:28:44,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:28:45,095 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:45,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:45,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:45,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:45,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:46,368 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:46,368 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:46,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [441722710] [2021-10-06 21:28:46,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [441722710] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:46,369 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:46,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:46,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333938906] [2021-10-06 21:28:46,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:46,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:46,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:46,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:46,372 INFO L87 Difference]: Start difference. First operand 104 states and 256 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) [2021-10-06 21:28:48,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:48,227 INFO L93 Difference]: Finished difference Result 217 states and 465 transitions. [2021-10-06 21:28:48,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:28:48,228 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 [2021-10-06 21:28:48,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:48,230 INFO L225 Difference]: With dead ends: 217 [2021-10-06 21:28:48,230 INFO L226 Difference]: Without dead ends: 197 [2021-10-06 21:28:48,233 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1853.4ms TimeCoverageRelationStatistics Valid=244, Invalid=568, Unknown=0, NotChecked=0, Total=812 [2021-10-06 21:28:48,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-06 21:28:48,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 122. [2021-10-06 21:28:48,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.652892561983471) internal successors, (321), 121 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) [2021-10-06 21:28:48,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 321 transitions. [2021-10-06 21:28:48,245 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 321 transitions. Word has length 15 [2021-10-06 21:28:48,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:48,246 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 321 transitions. [2021-10-06 21:28:48,249 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) [2021-10-06 21:28:48,250 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 321 transitions. [2021-10-06 21:28:48,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:48,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:48,252 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:48,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:48,453 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 [2021-10-06 21:28:48,453 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)] === [2021-10-06 21:28:48,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:48,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1780897116, now seen corresponding path program 6 times [2021-10-06 21:28:48,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:48,455 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401357860] [2021-10-06 21:28:48,455 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:48,455 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:48,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:48,456 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) [2021-10-06 21:28:48,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:28:48,637 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:28:48,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:48,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:48,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:48,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:48,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:49,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:49,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:49,983 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401357860] [2021-10-06 21:28:49,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401357860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:49,983 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:49,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:49,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950041982] [2021-10-06 21:28:49,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:49,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:49,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:49,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:49,985 INFO L87 Difference]: Start difference. First operand 122 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) [2021-10-06 21:28:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:52,100 INFO L93 Difference]: Finished difference Result 221 states and 481 transitions. [2021-10-06 21:28:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:28:52,101 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 [2021-10-06 21:28:52,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:52,103 INFO L225 Difference]: With dead ends: 221 [2021-10-06 21:28:52,103 INFO L226 Difference]: Without dead ends: 190 [2021-10-06 21:28:52,103 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2029.6ms TimeCoverageRelationStatistics Valid=267, Invalid=603, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:28:52,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-10-06 21:28:52,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 114. [2021-10-06 21:28:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.5398230088495577) internal successors, (287), 113 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 287 transitions. [2021-10-06 21:28:52,110 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 287 transitions. Word has length 15 [2021-10-06 21:28:52,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:52,110 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 287 transitions. [2021-10-06 21:28:52,110 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) [2021-10-06 21:28:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 287 transitions. [2021-10-06 21:28:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:52,111 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:52,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:52,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-10-06 21:28:52,324 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 [2021-10-06 21:28:52,325 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)] === [2021-10-06 21:28:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 706688432, now seen corresponding path program 7 times [2021-10-06 21:28:52,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:52,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455684693] [2021-10-06 21:28:52,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:52,327 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:52,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:52,328 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) [2021-10-06 21:28:52,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:28:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:52,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:52,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:52,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:52,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:53,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:53,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455684693] [2021-10-06 21:28:53,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455684693] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:53,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:53,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:53,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865311934] [2021-10-06 21:28:53,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:53,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:53,929 INFO L87 Difference]: Start difference. First operand 114 states and 287 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) [2021-10-06 21:28:55,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:55,354 INFO L93 Difference]: Finished difference Result 160 states and 367 transitions. [2021-10-06 21:28:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:28:55,355 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 [2021-10-06 21:28:55,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:55,356 INFO L225 Difference]: With dead ends: 160 [2021-10-06 21:28:55,356 INFO L226 Difference]: Without dead ends: 142 [2021-10-06 21:28:55,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1552.4ms TimeCoverageRelationStatistics Valid=184, Invalid=466, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:28:55,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-06 21:28:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 112. [2021-10-06 21:28:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5225225225225225) internal successors, (280), 111 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:55,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 280 transitions. [2021-10-06 21:28:55,364 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 280 transitions. Word has length 15 [2021-10-06 21:28:55,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:55,364 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 280 transitions. [2021-10-06 21:28:55,364 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) [2021-10-06 21:28:55,364 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 280 transitions. [2021-10-06 21:28:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:55,365 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:55,365 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:55,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:55,578 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 [2021-10-06 21:28:55,578 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)] === [2021-10-06 21:28:55,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:55,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1833303192, now seen corresponding path program 8 times [2021-10-06 21:28:55,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:55,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1777592277] [2021-10-06 21:28:55,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:55,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:55,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:55,583 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) [2021-10-06 21:28:55,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:28:55,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:55,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:55,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:55,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:56,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:57,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:57,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1777592277] [2021-10-06 21:28:57,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1777592277] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:57,082 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:57,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:28:57,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760400283] [2021-10-06 21:28:57,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:28:57,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:28:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:28:57,084 INFO L87 Difference]: Start difference. First operand 112 states and 280 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) [2021-10-06 21:28:59,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:59,013 INFO L93 Difference]: Finished difference Result 189 states and 405 transitions. [2021-10-06 21:28:59,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-06 21:28:59,015 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 [2021-10-06 21:28:59,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:59,017 INFO L225 Difference]: With dead ends: 189 [2021-10-06 21:28:59,017 INFO L226 Difference]: Without dead ends: 169 [2021-10-06 21:28:59,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1937.2ms TimeCoverageRelationStatistics Valid=208, Invalid=494, Unknown=0, NotChecked=0, Total=702 [2021-10-06 21:28:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-06 21:28:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 112. [2021-10-06 21:28:59,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5675675675675675) internal successors, (285), 111 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:59,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 285 transitions. [2021-10-06 21:28:59,024 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 285 transitions. Word has length 15 [2021-10-06 21:28:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:59,024 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 285 transitions. [2021-10-06 21:28:59,024 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) [2021-10-06 21:28:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 285 transitions. [2021-10-06 21:28:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:28:59,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:59,025 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:59,040 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-10-06 21:28:59,238 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 [2021-10-06 21:28:59,239 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)] === [2021-10-06 21:28:59,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:59,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1861008822, now seen corresponding path program 9 times [2021-10-06 21:28:59,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:59,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811618966] [2021-10-06 21:28:59,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:59,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:59,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:59,242 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) [2021-10-06 21:28:59,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:28:59,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:28:59,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:59,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:28:59,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:59,815 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:59,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:00,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:00,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:00,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811618966] [2021-10-06 21:29:00,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811618966] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:00,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:00,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:29:00,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532033610] [2021-10-06 21:29:00,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:00,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:00,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:00,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:00,706 INFO L87 Difference]: Start difference. First operand 112 states and 285 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) [2021-10-06 21:29:02,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:02,420 INFO L93 Difference]: Finished difference Result 196 states and 429 transitions. [2021-10-06 21:29:02,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-06 21:29:02,421 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 [2021-10-06 21:29:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:02,422 INFO L225 Difference]: With dead ends: 196 [2021-10-06 21:29:02,423 INFO L226 Difference]: Without dead ends: 170 [2021-10-06 21:29:02,423 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1625.5ms TimeCoverageRelationStatistics Valid=183, Invalid=467, Unknown=0, NotChecked=0, Total=650 [2021-10-06 21:29:02,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-10-06 21:29:02,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 112. [2021-10-06 21:29:02,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.5315315315315314) internal successors, (281), 111 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 281 transitions. [2021-10-06 21:29:02,429 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 281 transitions. Word has length 15 [2021-10-06 21:29:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:02,429 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 281 transitions. [2021-10-06 21:29:02,429 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) [2021-10-06 21:29:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 281 transitions. [2021-10-06 21:29:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:29:02,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:02,430 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:02,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:02,643 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 [2021-10-06 21:29:02,643 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)] === [2021-10-06 21:29:02,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash 626576726, now seen corresponding path program 10 times [2021-10-06 21:29:02,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:02,645 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777791757] [2021-10-06 21:29:02,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:02,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:02,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:02,647 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) [2021-10-06 21:29:02,648 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:29:02,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:02,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:02,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:29:02,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:03,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:04,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:04,226 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:04,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777791757] [2021-10-06 21:29:04,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777791757] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:04,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:04,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:29:04,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487360989] [2021-10-06 21:29:04,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:29:04,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:04,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:29:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:29:04,229 INFO L87 Difference]: Start difference. First operand 112 states and 281 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) [2021-10-06 21:29:05,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:05,726 INFO L93 Difference]: Finished difference Result 140 states and 332 transitions. [2021-10-06 21:29:05,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-06 21:29:05,727 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 [2021-10-06 21:29:05,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:05,728 INFO L225 Difference]: With dead ends: 140 [2021-10-06 21:29:05,728 INFO L226 Difference]: Without dead ends: 122 [2021-10-06 21:29:05,729 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1544.4ms TimeCoverageRelationStatistics Valid=138, Invalid=368, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:29:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-06 21:29:05,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2021-10-06 21:29:05,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.5346534653465347) internal successors, (256), 101 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:05,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 256 transitions. [2021-10-06 21:29:05,734 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 256 transitions. Word has length 15 [2021-10-06 21:29:05,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:05,734 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 256 transitions. [2021-10-06 21:29:05,734 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) [2021-10-06 21:29:05,734 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 256 transitions. [2021-10-06 21:29:05,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:05,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:05,735 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:05,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:05,939 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 [2021-10-06 21:29:05,940 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)] === [2021-10-06 21:29:05,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:05,941 INFO L82 PathProgramCache]: Analyzing trace with hash -961629656, now seen corresponding path program 11 times [2021-10-06 21:29:05,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:05,942 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [749419260] [2021-10-06 21:29:05,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:05,943 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:05,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:05,946 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) [2021-10-06 21:29:05,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:29:06,230 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:29:06,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:06,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:29:06,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:06,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:07,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:07,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [749419260] [2021-10-06 21:29:07,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [749419260] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:07,856 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:07,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:07,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769687269] [2021-10-06 21:29:07,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:07,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:07,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:07,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:07,858 INFO L87 Difference]: Start difference. First operand 102 states and 256 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) [2021-10-06 21:29:16,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:16,570 INFO L93 Difference]: Finished difference Result 414 states and 894 transitions. [2021-10-06 21:29:16,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:29:16,572 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 [2021-10-06 21:29:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:16,575 INFO L225 Difference]: With dead ends: 414 [2021-10-06 21:29:16,575 INFO L226 Difference]: Without dead ends: 394 [2021-10-06 21:29:16,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 8553.1ms TimeCoverageRelationStatistics Valid=693, Invalid=2847, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:29:16,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-06 21:29:16,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 132. [2021-10-06 21:29:16,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.763358778625954) internal successors, (362), 131 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 362 transitions. [2021-10-06 21:29:16,586 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 362 transitions. Word has length 17 [2021-10-06 21:29:16,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:16,587 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 362 transitions. [2021-10-06 21:29:16,587 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) [2021-10-06 21:29:16,587 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 362 transitions. [2021-10-06 21:29:16,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:16,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:16,588 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:16,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:16,801 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 [2021-10-06 21:29:16,802 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)] === [2021-10-06 21:29:16,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:16,803 INFO L82 PathProgramCache]: Analyzing trace with hash -989335286, now seen corresponding path program 12 times [2021-10-06 21:29:16,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:16,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482500026] [2021-10-06 21:29:16,804 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:16,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:16,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:16,805 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) [2021-10-06 21:29:16,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:29:17,086 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:29:17,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:17,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:29:17,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:17,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:17,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:19,024 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:19,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:19,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482500026] [2021-10-06 21:29:19,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482500026] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:19,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:19,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:19,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225136127] [2021-10-06 21:29:19,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:19,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:19,027 INFO L87 Difference]: Start difference. First operand 132 states and 362 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) [2021-10-06 21:29:26,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:26,731 INFO L93 Difference]: Finished difference Result 362 states and 835 transitions. [2021-10-06 21:29:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:29:26,735 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 [2021-10-06 21:29:26,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:26,739 INFO L225 Difference]: With dead ends: 362 [2021-10-06 21:29:26,739 INFO L226 Difference]: Without dead ends: 342 [2021-10-06 21:29:26,740 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 7437.9ms TimeCoverageRelationStatistics Valid=472, Invalid=1880, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:29:26,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-10-06 21:29:26,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 132. [2021-10-06 21:29:26,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.763358778625954) internal successors, (362), 131 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:26,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 362 transitions. [2021-10-06 21:29:26,748 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 362 transitions. Word has length 17 [2021-10-06 21:29:26,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:26,749 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 362 transitions. [2021-10-06 21:29:26,749 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) [2021-10-06 21:29:26,749 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 362 transitions. [2021-10-06 21:29:26,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:26,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:26,750 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:26,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:26,965 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 [2021-10-06 21:29:26,966 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)] === [2021-10-06 21:29:26,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:26,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1498250262, now seen corresponding path program 13 times [2021-10-06 21:29:26,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:26,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [757919756] [2021-10-06 21:29:26,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:26,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:26,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:26,969 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) [2021-10-06 21:29:26,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:29:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:27,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:29:27,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:27,644 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:27,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:29,388 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:29,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:29,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [757919756] [2021-10-06 21:29:29,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [757919756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:29,389 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:29,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:29,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957468393] [2021-10-06 21:29:29,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:29,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:29,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:29,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:29,391 INFO L87 Difference]: Start difference. First operand 132 states and 362 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) [2021-10-06 21:29:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:37,139 INFO L93 Difference]: Finished difference Result 331 states and 771 transitions. [2021-10-06 21:29:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:29:37,141 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 [2021-10-06 21:29:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:37,143 INFO L225 Difference]: With dead ends: 331 [2021-10-06 21:29:37,143 INFO L226 Difference]: Without dead ends: 316 [2021-10-06 21:29:37,144 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 7848.5ms TimeCoverageRelationStatistics Valid=462, Invalid=1700, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:29:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-06 21:29:37,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 134. [2021-10-06 21:29:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.7218045112781954) internal successors, (362), 133 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:37,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 362 transitions. [2021-10-06 21:29:37,152 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 362 transitions. Word has length 17 [2021-10-06 21:29:37,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:37,153 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 362 transitions. [2021-10-06 21:29:37,153 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) [2021-10-06 21:29:37,153 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 362 transitions. [2021-10-06 21:29:37,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:37,154 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:37,154 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:37,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-10-06 21:29:37,367 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 [2021-10-06 21:29:37,368 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)] === [2021-10-06 21:29:37,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:37,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1894538940, now seen corresponding path program 14 times [2021-10-06 21:29:37,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:37,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1682046824] [2021-10-06 21:29:37,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:37,370 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:37,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:37,371 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) [2021-10-06 21:29:37,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:29:37,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:37,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:37,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:29:37,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:38,076 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:38,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:39,652 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:39,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:39,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1682046824] [2021-10-06 21:29:39,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1682046824] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:39,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:39,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:39,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641144952] [2021-10-06 21:29:39,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:39,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:39,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:39,655 INFO L87 Difference]: Start difference. First operand 134 states and 362 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) [2021-10-06 21:29:47,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:47,831 INFO L93 Difference]: Finished difference Result 372 states and 831 transitions. [2021-10-06 21:29:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:29:47,833 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 [2021-10-06 21:29:47,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:47,835 INFO L225 Difference]: With dead ends: 372 [2021-10-06 21:29:47,835 INFO L226 Difference]: Without dead ends: 352 [2021-10-06 21:29:47,837 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 8028.6ms TimeCoverageRelationStatistics Valid=510, Invalid=2040, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:29:47,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-10-06 21:29:47,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 140. [2021-10-06 21:29:47,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.6690647482014387) internal successors, (371), 139 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:47,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 371 transitions. [2021-10-06 21:29:47,845 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 371 transitions. Word has length 17 [2021-10-06 21:29:47,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:47,846 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 371 transitions. [2021-10-06 21:29:47,846 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) [2021-10-06 21:29:47,846 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 371 transitions. [2021-10-06 21:29:47,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:47,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:47,847 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:47,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-06 21:29:48,060 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 [2021-10-06 21:29:48,060 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)] === [2021-10-06 21:29:48,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:48,061 INFO L82 PathProgramCache]: Analyzing trace with hash 2055923138, now seen corresponding path program 15 times [2021-10-06 21:29:48,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:48,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080302101] [2021-10-06 21:29:48,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:48,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:48,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:48,063 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) [2021-10-06 21:29:48,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:29:48,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:48,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:48,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:29:48,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:48,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:50,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:50,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080302101] [2021-10-06 21:29:50,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080302101] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:50,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:50,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:50,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071573519] [2021-10-06 21:29:50,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:50,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:50,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:50,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:50,538 INFO L87 Difference]: Start difference. First operand 140 states and 371 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) [2021-10-06 21:30:04,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:04,203 INFO L93 Difference]: Finished difference Result 400 states and 895 transitions. [2021-10-06 21:30:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:30:04,203 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 [2021-10-06 21:30:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:04,207 INFO L225 Difference]: With dead ends: 400 [2021-10-06 21:30:04,207 INFO L226 Difference]: Without dead ends: 380 [2021-10-06 21:30:04,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1053 ImplicationChecksByTransitivity, 13380.2ms TimeCoverageRelationStatistics Valid=814, Invalid=3476, Unknown=0, NotChecked=0, Total=4290 [2021-10-06 21:30:04,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-10-06 21:30:04,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 152. [2021-10-06 21:30:04,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.748344370860927) internal successors, (415), 151 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:04,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 415 transitions. [2021-10-06 21:30:04,217 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 415 transitions. Word has length 17 [2021-10-06 21:30:04,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:04,217 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 415 transitions. [2021-10-06 21:30:04,217 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) [2021-10-06 21:30:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 415 transitions. [2021-10-06 21:30:04,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:04,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:04,218 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:04,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-06 21:30:04,432 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 [2021-10-06 21:30:04,433 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)] === [2021-10-06 21:30:04,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:04,433 INFO L82 PathProgramCache]: Analyzing trace with hash 2028217508, now seen corresponding path program 16 times [2021-10-06 21:30:04,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:04,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488186068] [2021-10-06 21:30:04,434 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:30:04,435 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:04,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:04,436 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) [2021-10-06 21:30:04,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:30:04,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:30:04,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:04,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:30:04,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:05,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:06,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:06,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:06,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488186068] [2021-10-06 21:30:06,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488186068] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:06,879 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:06,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:06,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118808466] [2021-10-06 21:30:06,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:06,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:06,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:06,881 INFO L87 Difference]: Start difference. First operand 152 states and 415 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) [2021-10-06 21:30:16,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:16,368 INFO L93 Difference]: Finished difference Result 374 states and 864 transitions. [2021-10-06 21:30:16,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:30:16,369 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 [2021-10-06 21:30:16,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:16,372 INFO L225 Difference]: With dead ends: 374 [2021-10-06 21:30:16,372 INFO L226 Difference]: Without dead ends: 354 [2021-10-06 21:30:16,373 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 639 ImplicationChecksByTransitivity, 9368.7ms TimeCoverageRelationStatistics Valid=563, Invalid=2299, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:30:16,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-06 21:30:16,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 152. [2021-10-06 21:30:16,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.748344370860927) internal successors, (415), 151 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:16,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 415 transitions. [2021-10-06 21:30:16,381 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 415 transitions. Word has length 17 [2021-10-06 21:30:16,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:16,381 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 415 transitions. [2021-10-06 21:30:16,381 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) [2021-10-06 21:30:16,381 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 415 transitions. [2021-10-06 21:30:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:16,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:16,382 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:16,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:16,596 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 [2021-10-06 21:30:16,596 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)] === [2021-10-06 21:30:16,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:16,597 INFO L82 PathProgramCache]: Analyzing trace with hash 220835760, now seen corresponding path program 17 times [2021-10-06 21:30:16,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:16,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933797833] [2021-10-06 21:30:16,598 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:16,598 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:16,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:16,599 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) [2021-10-06 21:30:16,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:30:16,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:30:16,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:16,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:30:16,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:17,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:17,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:18,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:18,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:18,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933797833] [2021-10-06 21:30:18,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933797833] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:18,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:18,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:18,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136248472] [2021-10-06 21:30:18,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:18,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:18,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:18,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:18,850 INFO L87 Difference]: Start difference. First operand 152 states and 415 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) [2021-10-06 21:30:26,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:26,714 INFO L93 Difference]: Finished difference Result 353 states and 838 transitions. [2021-10-06 21:30:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:30:26,716 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 [2021-10-06 21:30:26,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:26,719 INFO L225 Difference]: With dead ends: 353 [2021-10-06 21:30:26,719 INFO L226 Difference]: Without dead ends: 338 [2021-10-06 21:30:26,720 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 7688.8ms TimeCoverageRelationStatistics Valid=677, Invalid=2515, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:30:26,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-06 21:30:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 162. [2021-10-06 21:30:26,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.770186335403727) internal successors, (446), 161 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:26,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 446 transitions. [2021-10-06 21:30:26,729 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 446 transitions. Word has length 17 [2021-10-06 21:30:26,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:26,730 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 446 transitions. [2021-10-06 21:30:26,730 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) [2021-10-06 21:30:26,730 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 446 transitions. [2021-10-06 21:30:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:26,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:26,731 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:26,748 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-10-06 21:30:26,944 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 [2021-10-06 21:30:26,945 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)] === [2021-10-06 21:30:26,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:26,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1160150608, now seen corresponding path program 18 times [2021-10-06 21:30:26,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:26,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [815355043] [2021-10-06 21:30:26,947 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:26,947 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:26,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:26,948 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) [2021-10-06 21:30:26,949 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:30:27,364 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:30:27,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:27,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:30:27,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:27,774 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:27,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:29,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:29,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [815355043] [2021-10-06 21:30:29,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [815355043] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:29,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:29,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:29,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424061954] [2021-10-06 21:30:29,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:29,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:29,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:29,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:29,431 INFO L87 Difference]: Start difference. First operand 162 states and 446 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) [2021-10-06 21:30:37,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:37,526 INFO L93 Difference]: Finished difference Result 345 states and 817 transitions. [2021-10-06 21:30:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:30:37,527 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 [2021-10-06 21:30:37,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:37,533 INFO L225 Difference]: With dead ends: 345 [2021-10-06 21:30:37,533 INFO L226 Difference]: Without dead ends: 330 [2021-10-06 21:30:37,535 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 7835.2ms TimeCoverageRelationStatistics Valid=470, Invalid=1882, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:30:37,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-06 21:30:37,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 174. [2021-10-06 21:30:37,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.786127167630058) internal successors, (482), 173 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:37,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 482 transitions. [2021-10-06 21:30:37,543 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 482 transitions. Word has length 17 [2021-10-06 21:30:37,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:37,543 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 482 transitions. [2021-10-06 21:30:37,544 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) [2021-10-06 21:30:37,544 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 482 transitions. [2021-10-06 21:30:37,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:37,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:37,545 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:37,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:37,758 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 [2021-10-06 21:30:37,759 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)] === [2021-10-06 21:30:37,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1162529192, now seen corresponding path program 19 times [2021-10-06 21:30:37,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:37,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566365553] [2021-10-06 21:30:37,760 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:37,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:37,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:37,762 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) [2021-10-06 21:30:37,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:30:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:38,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:30:38,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:38,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:38,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:40,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:40,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:40,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566365553] [2021-10-06 21:30:40,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566365553] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:40,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:40,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:40,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261315910] [2021-10-06 21:30:40,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:40,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:40,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:40,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:40,196 INFO L87 Difference]: Start difference. First operand 174 states and 482 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) [2021-10-06 21:30:53,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:53,952 INFO L93 Difference]: Finished difference Result 457 states and 1027 transitions. [2021-10-06 21:30:53,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:30:53,954 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 [2021-10-06 21:30:53,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:53,956 INFO L225 Difference]: With dead ends: 457 [2021-10-06 21:30:53,956 INFO L226 Difference]: Without dead ends: 432 [2021-10-06 21:30:53,958 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1016 ImplicationChecksByTransitivity, 13355.2ms TimeCoverageRelationStatistics Valid=861, Invalid=3299, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:30:53,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-10-06 21:30:53,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 174. [2021-10-06 21:30:53,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.8092485549132946) internal successors, (486), 173 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:30:53,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 486 transitions. [2021-10-06 21:30:53,966 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 486 transitions. Word has length 17 [2021-10-06 21:30:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:53,967 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 486 transitions. [2021-10-06 21:30:53,967 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) [2021-10-06 21:30:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 486 transitions. [2021-10-06 21:30:53,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:53,968 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:53,968 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:53,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:54,189 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 [2021-10-06 21:30:54,189 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)] === [2021-10-06 21:30:54,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:54,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1190234822, now seen corresponding path program 20 times [2021-10-06 21:30:54,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:54,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581682334] [2021-10-06 21:30:54,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:54,191 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:54,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:54,192 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) [2021-10-06 21:30:54,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:30:54,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:30:54,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:54,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:30:54,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:55,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:56,690 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:56,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:56,690 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581682334] [2021-10-06 21:30:56,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581682334] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:56,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:56,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:56,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690699603] [2021-10-06 21:30:56,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:56,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:56,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:56,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:56,693 INFO L87 Difference]: Start difference. First operand 174 states and 486 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) [2021-10-06 21:31:07,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:07,910 INFO L93 Difference]: Finished difference Result 435 states and 1009 transitions. [2021-10-06 21:31:07,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:31:07,911 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 [2021-10-06 21:31:07,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:07,914 INFO L225 Difference]: With dead ends: 435 [2021-10-06 21:31:07,914 INFO L226 Difference]: Without dead ends: 398 [2021-10-06 21:31:07,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 10859.8ms TimeCoverageRelationStatistics Valid=696, Invalid=2496, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:31:07,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-06 21:31:07,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 188. [2021-10-06 21:31:07,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 2.679144385026738) internal successors, (501), 187 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:07,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 501 transitions. [2021-10-06 21:31:07,924 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 501 transitions. Word has length 17 [2021-10-06 21:31:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:07,924 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 501 transitions. [2021-10-06 21:31:07,924 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) [2021-10-06 21:31:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 501 transitions. [2021-10-06 21:31:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:07,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:07,925 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:07,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:08,133 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 [2021-10-06 21:31:08,134 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)] === [2021-10-06 21:31:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:08,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1442724489, now seen corresponding path program 21 times [2021-10-06 21:31:08,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:08,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552757967] [2021-10-06 21:31:08,135 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:08,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:08,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:08,137 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) [2021-10-06 21:31:08,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:31:08,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:31:08,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:08,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:08,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:09,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:10,442 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:10,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552757967] [2021-10-06 21:31:10,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552757967] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:10,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:10,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:10,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939127169] [2021-10-06 21:31:10,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:10,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:10,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:10,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:10,444 INFO L87 Difference]: Start difference. First operand 188 states and 501 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) [2021-10-06 21:31:15,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:15,419 INFO L93 Difference]: Finished difference Result 421 states and 969 transitions. [2021-10-06 21:31:15,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:31:15,420 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 [2021-10-06 21:31:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:15,424 INFO L225 Difference]: With dead ends: 421 [2021-10-06 21:31:15,424 INFO L226 Difference]: Without dead ends: 394 [2021-10-06 21:31:15,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 4601.2ms TimeCoverageRelationStatistics Valid=495, Invalid=1485, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:31:15,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-06 21:31:15,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 208. [2021-10-06 21:31:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.6956521739130435) internal successors, (558), 207 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 558 transitions. [2021-10-06 21:31:15,431 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 558 transitions. Word has length 17 [2021-10-06 21:31:15,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:15,432 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 558 transitions. [2021-10-06 21:31:15,432 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) [2021-10-06 21:31:15,432 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 558 transitions. [2021-10-06 21:31:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:15,433 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:15,433 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:15,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:15,646 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 [2021-10-06 21:31:15,647 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)] === [2021-10-06 21:31:15,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:15,648 INFO L82 PathProgramCache]: Analyzing trace with hash 842771619, now seen corresponding path program 22 times [2021-10-06 21:31:15,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:15,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680318266] [2021-10-06 21:31:15,649 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:15,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:15,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:15,650 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) [2021-10-06 21:31:15,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:31:16,100 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:16,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:16,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:31:16,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:16,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:17,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:17,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680318266] [2021-10-06 21:31:17,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680318266] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:17,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:17,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:17,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485050102] [2021-10-06 21:31:17,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:17,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:17,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:17,838 INFO L87 Difference]: Start difference. First operand 208 states and 558 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) [2021-10-06 21:31:23,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:23,280 INFO L93 Difference]: Finished difference Result 418 states and 959 transitions. [2021-10-06 21:31:23,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:31:23,282 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 [2021-10-06 21:31:23,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:23,285 INFO L225 Difference]: With dead ends: 418 [2021-10-06 21:31:23,285 INFO L226 Difference]: Without dead ends: 390 [2021-10-06 21:31:23,286 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 5051.9ms TimeCoverageRelationStatistics Valid=522, Invalid=1734, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:31:23,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-06 21:31:23,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 190. [2021-10-06 21:31:23,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 189 states have (on average 2.7724867724867726) internal successors, (524), 189 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 524 transitions. [2021-10-06 21:31:23,294 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 524 transitions. Word has length 17 [2021-10-06 21:31:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:23,294 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 524 transitions. [2021-10-06 21:31:23,295 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) [2021-10-06 21:31:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 524 transitions. [2021-10-06 21:31:23,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:23,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:23,296 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:23,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:23,497 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 [2021-10-06 21:31:23,498 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)] === [2021-10-06 21:31:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:23,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1110779240, now seen corresponding path program 23 times [2021-10-06 21:31:23,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:23,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513046438] [2021-10-06 21:31:23,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:23,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:23,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:23,501 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) [2021-10-06 21:31:23,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:31:24,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:31:24,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:24,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:31:24,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:24,408 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:24,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:25,939 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:25,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:25,939 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513046438] [2021-10-06 21:31:25,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513046438] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:25,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:25,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:25,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340442997] [2021-10-06 21:31:25,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:25,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:25,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:25,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:25,942 INFO L87 Difference]: Start difference. First operand 190 states and 524 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) [2021-10-06 21:31:36,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:36,997 INFO L93 Difference]: Finished difference Result 479 states and 1148 transitions. [2021-10-06 21:31:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:31:36,998 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 [2021-10-06 21:31:36,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:37,001 INFO L225 Difference]: With dead ends: 479 [2021-10-06 21:31:37,001 INFO L226 Difference]: Without dead ends: 464 [2021-10-06 21:31:37,003 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 10538.3ms TimeCoverageRelationStatistics Valid=755, Invalid=2551, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:31:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-10-06 21:31:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 224. [2021-10-06 21:31:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.937219730941704) internal successors, (655), 223 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 655 transitions. [2021-10-06 21:31:37,012 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 655 transitions. Word has length 17 [2021-10-06 21:31:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:37,012 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 655 transitions. [2021-10-06 21:31:37,012 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) [2021-10-06 21:31:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 655 transitions. [2021-10-06 21:31:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:37,014 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:37,014 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:37,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-10-06 21:31:37,227 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 [2021-10-06 21:31:37,227 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)] === [2021-10-06 21:31:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1083073610, now seen corresponding path program 24 times [2021-10-06 21:31:37,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:37,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699904084] [2021-10-06 21:31:37,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:37,229 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:37,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:37,231 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) [2021-10-06 21:31:37,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:31:37,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:31:37,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:37,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:31:37,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:38,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:38,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:40,249 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:40,249 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:40,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699904084] [2021-10-06 21:31:40,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699904084] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:40,250 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:40,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:40,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196872460] [2021-10-06 21:31:40,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:40,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:40,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:40,252 INFO L87 Difference]: Start difference. First operand 224 states and 655 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) [2021-10-06 21:31:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:50,940 INFO L93 Difference]: Finished difference Result 424 states and 1043 transitions. [2021-10-06 21:31:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:31:50,942 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 [2021-10-06 21:31:50,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:50,944 INFO L225 Difference]: With dead ends: 424 [2021-10-06 21:31:50,944 INFO L226 Difference]: Without dead ends: 404 [2021-10-06 21:31:50,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 10388.4ms TimeCoverageRelationStatistics Valid=482, Invalid=1870, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:31:50,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-10-06 21:31:50,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 224. [2021-10-06 21:31:50,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.937219730941704) internal successors, (655), 223 states have internal predecessors, (655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:31:50,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 655 transitions. [2021-10-06 21:31:50,953 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 655 transitions. Word has length 17 [2021-10-06 21:31:50,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:50,953 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 655 transitions. [2021-10-06 21:31:50,953 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) [2021-10-06 21:31:50,953 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 655 transitions. [2021-10-06 21:31:50,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:50,954 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:50,954 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:50,965 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-06 21:31:51,155 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 [2021-10-06 21:31:51,155 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)] === [2021-10-06 21:31:51,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:51,156 INFO L82 PathProgramCache]: Analyzing trace with hash -724308138, now seen corresponding path program 25 times [2021-10-06 21:31:51,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:51,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926413894] [2021-10-06 21:31:51,157 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:31:51,157 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:51,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:51,158 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) [2021-10-06 21:31:51,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:31:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:31:51,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:31:51,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:52,081 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:52,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:54,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:54,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:54,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926413894] [2021-10-06 21:31:54,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926413894] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:54,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:54,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:54,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839293013] [2021-10-06 21:31:54,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:54,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:54,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:54,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:54,163 INFO L87 Difference]: Start difference. First operand 224 states and 655 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) [2021-10-06 21:32:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:03,101 INFO L93 Difference]: Finished difference Result 359 states and 909 transitions. [2021-10-06 21:32:03,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:32:03,102 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 [2021-10-06 21:32:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:03,105 INFO L225 Difference]: With dead ends: 359 [2021-10-06 21:32:03,105 INFO L226 Difference]: Without dead ends: 344 [2021-10-06 21:32:03,106 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 8667.3ms TimeCoverageRelationStatistics Valid=397, Invalid=1495, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:32:03,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-10-06 21:32:03,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 218. [2021-10-06 21:32:03,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.921658986175115) internal successors, (634), 217 states have internal predecessors, (634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 634 transitions. [2021-10-06 21:32:03,113 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 634 transitions. Word has length 17 [2021-10-06 21:32:03,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:03,114 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 634 transitions. [2021-10-06 21:32:03,114 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) [2021-10-06 21:32:03,114 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 634 transitions. [2021-10-06 21:32:03,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:03,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:03,115 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:03,132 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-10-06 21:32:03,328 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 [2021-10-06 21:32:03,329 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)] === [2021-10-06 21:32:03,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:03,329 INFO L82 PathProgramCache]: Analyzing trace with hash -2105294506, now seen corresponding path program 26 times [2021-10-06 21:32:03,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:03,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640275520] [2021-10-06 21:32:03,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:03,330 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:03,332 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) [2021-10-06 21:32:03,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:32:03,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:03,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:03,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:32:03,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:04,345 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:06,178 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:06,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640275520] [2021-10-06 21:32:06,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640275520] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:06,179 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:06,179 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:06,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951629748] [2021-10-06 21:32:06,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:06,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:06,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:06,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:06,181 INFO L87 Difference]: Start difference. First operand 218 states and 634 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) [2021-10-06 21:32:13,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:13,800 INFO L93 Difference]: Finished difference Result 409 states and 1012 transitions. [2021-10-06 21:32:13,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:32:13,801 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 [2021-10-06 21:32:13,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:13,803 INFO L225 Difference]: With dead ends: 409 [2021-10-06 21:32:13,803 INFO L226 Difference]: Without dead ends: 394 [2021-10-06 21:32:13,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 7291.4ms TimeCoverageRelationStatistics Valid=377, Invalid=1693, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:32:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-10-06 21:32:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 232. [2021-10-06 21:32:13,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.9913419913419914) internal successors, (691), 231 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 691 transitions. [2021-10-06 21:32:13,811 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 691 transitions. Word has length 17 [2021-10-06 21:32:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:13,811 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 691 transitions. [2021-10-06 21:32:13,812 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) [2021-10-06 21:32:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 691 transitions. [2021-10-06 21:32:13,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:13,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:13,813 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:13,831 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:14,027 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 [2021-10-06 21:32:14,028 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)] === [2021-10-06 21:32:14,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:14,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2107673090, now seen corresponding path program 27 times [2021-10-06 21:32:14,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:14,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153636467] [2021-10-06 21:32:14,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:32:14,029 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:14,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:14,031 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) [2021-10-06 21:32:14,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:32:14,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:32:14,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:14,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:32:14,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:15,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:16,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:16,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153636467] [2021-10-06 21:32:16,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153636467] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:16,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:16,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:16,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521253154] [2021-10-06 21:32:16,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:16,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:16,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:16,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:16,786 INFO L87 Difference]: Start difference. First operand 232 states and 691 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) [2021-10-06 21:32:31,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:31,160 INFO L93 Difference]: Finished difference Result 510 states and 1204 transitions. [2021-10-06 21:32:31,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:32:31,161 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 [2021-10-06 21:32:31,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:31,165 INFO L225 Difference]: With dead ends: 510 [2021-10-06 21:32:31,165 INFO L226 Difference]: Without dead ends: 490 [2021-10-06 21:32:31,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 916 ImplicationChecksByTransitivity, 13804.9ms TimeCoverageRelationStatistics Valid=796, Invalid=3110, Unknown=0, NotChecked=0, Total=3906 [2021-10-06 21:32:31,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-06 21:32:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 234. [2021-10-06 21:32:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.0214592274678114) internal successors, (704), 233 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 704 transitions. [2021-10-06 21:32:31,174 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 704 transitions. Word has length 17 [2021-10-06 21:32:31,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:31,175 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 704 transitions. [2021-10-06 21:32:31,175 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) [2021-10-06 21:32:31,175 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 704 transitions. [2021-10-06 21:32:31,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:31,176 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:31,176 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:31,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-10-06 21:32:31,391 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 [2021-10-06 21:32:31,391 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)] === [2021-10-06 21:32:31,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:31,392 INFO L82 PathProgramCache]: Analyzing trace with hash -2135378720, now seen corresponding path program 28 times [2021-10-06 21:32:31,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:31,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941584119] [2021-10-06 21:32:31,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:32:31,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:31,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:31,394 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) [2021-10-06 21:32:31,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:32:31,978 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:32:31,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:31,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:32:31,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:32,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:34,336 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:34,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:34,336 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941584119] [2021-10-06 21:32:34,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1941584119] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:34,337 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:34,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:34,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831385660] [2021-10-06 21:32:34,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:34,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:34,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:34,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:34,339 INFO L87 Difference]: Start difference. First operand 234 states and 704 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) [2021-10-06 21:32:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:46,201 INFO L93 Difference]: Finished difference Result 474 states and 1152 transitions. [2021-10-06 21:32:46,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-10-06 21:32:46,202 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 [2021-10-06 21:32:46,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:46,205 INFO L225 Difference]: With dead ends: 474 [2021-10-06 21:32:46,205 INFO L226 Difference]: Without dead ends: 424 [2021-10-06 21:32:46,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 11484.4ms TimeCoverageRelationStatistics Valid=660, Invalid=2420, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:32:46,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-06 21:32:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 236. [2021-10-06 21:32:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 2.893617021276596) internal successors, (680), 235 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 680 transitions. [2021-10-06 21:32:46,215 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 680 transitions. Word has length 17 [2021-10-06 21:32:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:46,215 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 680 transitions. [2021-10-06 21:32:46,215 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) [2021-10-06 21:32:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 680 transitions. [2021-10-06 21:32:46,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:46,216 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:46,217 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:46,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-10-06 21:32:46,430 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 [2021-10-06 21:32:46,430 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)] === [2021-10-06 21:32:46,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:46,438 INFO L82 PathProgramCache]: Analyzing trace with hash -470902799, now seen corresponding path program 29 times [2021-10-06 21:32:46,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:46,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757829577] [2021-10-06 21:32:46,438 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:46,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:46,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:46,440 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) [2021-10-06 21:32:46,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:32:47,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:47,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:47,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:32:47,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:47,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:47,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:49,102 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:49,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:49,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757829577] [2021-10-06 21:32:49,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757829577] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:49,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:49,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:49,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931685623] [2021-10-06 21:32:49,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:49,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:49,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:49,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:49,105 INFO L87 Difference]: Start difference. First operand 236 states and 680 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) [2021-10-06 21:32:55,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:55,783 INFO L93 Difference]: Finished difference Result 430 states and 1071 transitions. [2021-10-06 21:32:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:32:55,784 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 [2021-10-06 21:32:55,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:55,786 INFO L225 Difference]: With dead ends: 430 [2021-10-06 21:32:55,786 INFO L226 Difference]: Without dead ends: 412 [2021-10-06 21:32:55,787 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 418 ImplicationChecksByTransitivity, 6699.7ms TimeCoverageRelationStatistics Valid=508, Invalid=1384, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:32:55,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-06 21:32:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 248. [2021-10-06 21:32:55,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.9554655870445345) internal successors, (730), 247 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:55,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 730 transitions. [2021-10-06 21:32:55,793 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 730 transitions. Word has length 17 [2021-10-06 21:32:55,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:55,793 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 730 transitions. [2021-10-06 21:32:55,794 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) [2021-10-06 21:32:55,794 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 730 transitions. [2021-10-06 21:32:55,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:55,795 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:55,795 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:55,813 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2021-10-06 21:32:55,995 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 [2021-10-06 21:32:55,996 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)] === [2021-10-06 21:32:55,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:55,997 INFO L82 PathProgramCache]: Analyzing trace with hash 497580591, now seen corresponding path program 30 times [2021-10-06 21:32:55,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:55,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938072488] [2021-10-06 21:32:55,998 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:32:55,998 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:55,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:56,000 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) [2021-10-06 21:32:56,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:32:56,686 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:32:56,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:56,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:32:56,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:57,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:58,576 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:58,577 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:58,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938072488] [2021-10-06 21:32:58,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938072488] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:58,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:58,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:58,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277265664] [2021-10-06 21:32:58,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:58,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:58,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:58,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:58,580 INFO L87 Difference]: Start difference. First operand 248 states and 730 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) [2021-10-06 21:33:03,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:03,324 INFO L93 Difference]: Finished difference Result 408 states and 1038 transitions. [2021-10-06 21:33:03,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:33:03,326 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 [2021-10-06 21:33:03,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:03,328 INFO L225 Difference]: With dead ends: 408 [2021-10-06 21:33:03,328 INFO L226 Difference]: Without dead ends: 386 [2021-10-06 21:33:03,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 4084.7ms TimeCoverageRelationStatistics Valid=412, Invalid=1228, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:33:03,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-10-06 21:33:03,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 236. [2021-10-06 21:33:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 3.008510638297872) internal successors, (707), 235 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 707 transitions. [2021-10-06 21:33:03,335 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 707 transitions. Word has length 17 [2021-10-06 21:33:03,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:03,335 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 707 transitions. [2021-10-06 21:33:03,335 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) [2021-10-06 21:33:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 707 transitions. [2021-10-06 21:33:03,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:33:03,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:03,336 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:03,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:03,537 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 [2021-10-06 21:33:03,537 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)] === [2021-10-06 21:33:03,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1275634472, now seen corresponding path program 31 times [2021-10-06 21:33:03,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:03,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939036742] [2021-10-06 21:33:03,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:33:03,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:03,540 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) [2021-10-06 21:33:03,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:33:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:04,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:33:04,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:04,598 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:04,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:06,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:06,378 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:06,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939036742] [2021-10-06 21:33:06,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939036742] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:06,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:06,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:33:06,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592458567] [2021-10-06 21:33:06,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:06,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:06,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:06,381 INFO L87 Difference]: Start difference. First operand 236 states and 707 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) [2021-10-06 21:33:12,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:12,196 INFO L93 Difference]: Finished difference Result 353 states and 923 transitions. [2021-10-06 21:33:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:33:12,197 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 [2021-10-06 21:33:12,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:12,199 INFO L225 Difference]: With dead ends: 353 [2021-10-06 21:33:12,199 INFO L226 Difference]: Without dead ends: 338 [2021-10-06 21:33:12,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 5672.3ms TimeCoverageRelationStatistics Valid=331, Invalid=1229, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:33:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-10-06 21:33:12,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 246. [2021-10-06 21:33:12,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.979591836734694) internal successors, (730), 245 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:12,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 730 transitions. [2021-10-06 21:33:12,206 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 730 transitions. Word has length 17 [2021-10-06 21:33:12,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:12,207 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 730 transitions. [2021-10-06 21:33:12,207 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) [2021-10-06 21:33:12,207 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 730 transitions. [2021-10-06 21:33:12,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:33:12,208 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:12,208 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:12,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:12,417 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 [2021-10-06 21:33:12,418 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)] === [2021-10-06 21:33:12,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:12,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1201898368, now seen corresponding path program 32 times [2021-10-06 21:33:12,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:12,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [252364474] [2021-10-06 21:33:12,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:33:12,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:12,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:12,421 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) [2021-10-06 21:33:12,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:33:13,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:33:13,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:13,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:33:13,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:13,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:15,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:15,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [252364474] [2021-10-06 21:33:15,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [252364474] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:15,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:15,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:33:15,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944079152] [2021-10-06 21:33:15,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:15,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:15,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:15,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:15,360 INFO L87 Difference]: Start difference. First operand 246 states and 730 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) [2021-10-06 21:33:23,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:23,095 INFO L93 Difference]: Finished difference Result 420 states and 1085 transitions. [2021-10-06 21:33:23,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-10-06 21:33:23,096 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 [2021-10-06 21:33:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:23,099 INFO L225 Difference]: With dead ends: 420 [2021-10-06 21:33:23,099 INFO L226 Difference]: Without dead ends: 410 [2021-10-06 21:33:23,099 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 7277.4ms TimeCoverageRelationStatistics Valid=437, Invalid=1819, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:33:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-06 21:33:23,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2021-10-06 21:33:23,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 3.0513833992094863) internal successors, (772), 253 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 772 transitions. [2021-10-06 21:33:23,106 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 772 transitions. Word has length 17 [2021-10-06 21:33:23,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:23,107 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 772 transitions. [2021-10-06 21:33:23,107 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) [2021-10-06 21:33:23,107 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 772 transitions. [2021-10-06 21:33:23,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:33:23,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:23,108 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:23,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:23,321 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 [2021-10-06 21:33:23,322 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)] === [2021-10-06 21:33:23,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:23,322 INFO L82 PathProgramCache]: Analyzing trace with hash 1199519784, now seen corresponding path program 33 times [2021-10-06 21:33:23,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:23,323 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549712449] [2021-10-06 21:33:23,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:33:23,323 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:23,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:23,325 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) [2021-10-06 21:33:23,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:33:24,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:33:24,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:24,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:33:24,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:24,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:24,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:26,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:26,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549712449] [2021-10-06 21:33:26,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549712449] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:26,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:26,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:33:26,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497069853] [2021-10-06 21:33:26,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:26,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:26,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:26,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:26,007 INFO L87 Difference]: Start difference. First operand 254 states and 772 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) [2021-10-06 21:33:35,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:35,164 INFO L93 Difference]: Finished difference Result 567 states and 1331 transitions. [2021-10-06 21:33:35,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:33:35,165 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 [2021-10-06 21:33:35,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:35,169 INFO L225 Difference]: With dead ends: 567 [2021-10-06 21:33:35,169 INFO L226 Difference]: Without dead ends: 542 [2021-10-06 21:33:35,170 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 8477.7ms TimeCoverageRelationStatistics Valid=745, Invalid=2915, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:33:35,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-06 21:33:35,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 258. [2021-10-06 21:33:35,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 3.0894941634241246) internal successors, (794), 257 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:35,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 794 transitions. [2021-10-06 21:33:35,179 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 794 transitions. Word has length 17 [2021-10-06 21:33:35,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:35,180 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 794 transitions. [2021-10-06 21:33:35,180 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) [2021-10-06 21:33:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 794 transitions. [2021-10-06 21:33:35,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:33:35,181 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:35,181 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:35,201 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2021-10-06 21:33:35,399 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 [2021-10-06 21:33:35,400 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)] === [2021-10-06 21:33:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1171814154, now seen corresponding path program 34 times [2021-10-06 21:33:35,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:35,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964605360] [2021-10-06 21:33:35,401 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:33:35,401 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:35,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:35,403 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) [2021-10-06 21:33:35,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-06 21:33:36,115 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:33:36,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:36,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:33:36,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:36,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:38,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:38,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:38,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964605360] [2021-10-06 21:33:38,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964605360] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:38,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:38,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:33:38,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035292502] [2021-10-06 21:33:38,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:38,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:38,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:38,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:38,317 INFO L87 Difference]: Start difference. First operand 258 states and 794 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) [2021-10-06 21:33:49,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:49,123 INFO L93 Difference]: Finished difference Result 525 states and 1318 transitions. [2021-10-06 21:33:49,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:33:49,125 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 [2021-10-06 21:33:49,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:49,127 INFO L225 Difference]: With dead ends: 525 [2021-10-06 21:33:49,127 INFO L226 Difference]: Without dead ends: 484 [2021-10-06 21:33:49,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 10246.9ms TimeCoverageRelationStatistics Valid=647, Invalid=2005, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:33:49,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-06 21:33:49,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 268. [2021-10-06 21:33:49,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 3.0374531835205993) internal successors, (811), 267 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:49,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 811 transitions. [2021-10-06 21:33:49,136 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 811 transitions. Word has length 17 [2021-10-06 21:33:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:49,137 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 811 transitions. [2021-10-06 21:33:49,137 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) [2021-10-06 21:33:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 811 transitions. [2021-10-06 21:33:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:33:49,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:49,138 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:49,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:49,341 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 [2021-10-06 21:33:49,342 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)] === [2021-10-06 21:33:49,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:49,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1458677221, now seen corresponding path program 35 times [2021-10-06 21:33:49,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:49,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824311679] [2021-10-06 21:33:49,344 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:33:49,344 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:49,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:49,345 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) [2021-10-06 21:33:49,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-06 21:33:50,182 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:33:50,182 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:50,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:33:50,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:50,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:50,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:52,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:52,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824311679] [2021-10-06 21:33:52,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824311679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:52,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:52,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:33:52,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585037343] [2021-10-06 21:33:52,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:33:52,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:33:52,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:33:52,565 INFO L87 Difference]: Start difference. First operand 268 states and 811 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) [2021-10-06 21:34:02,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:02,977 INFO L93 Difference]: Finished difference Result 438 states and 1127 transitions. [2021-10-06 21:34:02,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:34:02,978 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 [2021-10-06 21:34:02,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:02,981 INFO L225 Difference]: With dead ends: 438 [2021-10-06 21:34:02,981 INFO L226 Difference]: Without dead ends: 418 [2021-10-06 21:34:02,981 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 10183.1ms TimeCoverageRelationStatistics Valid=650, Invalid=2212, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:34:02,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-10-06 21:34:02,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 260. [2021-10-06 21:34:02,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.054054054054054) internal successors, (791), 259 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:02,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 791 transitions. [2021-10-06 21:34:02,994 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 791 transitions. Word has length 17 [2021-10-06 21:34:02,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:02,994 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 791 transitions. [2021-10-06 21:34:02,994 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) [2021-10-06 21:34:02,994 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 791 transitions. [2021-10-06 21:34:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:34:02,995 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:02,995 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:03,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:03,202 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 [2021-10-06 21:34:03,203 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)] === [2021-10-06 21:34:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:03,204 INFO L82 PathProgramCache]: Analyzing trace with hash 1876089474, now seen corresponding path program 36 times [2021-10-06 21:34:03,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:03,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604374352] [2021-10-06 21:34:03,205 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:34:03,205 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:03,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:03,206 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) [2021-10-06 21:34:03,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-06 21:34:04,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:34:04,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:04,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:04,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:04,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:06,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:06,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604374352] [2021-10-06 21:34:06,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604374352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:06,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:06,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:34:06,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107996512] [2021-10-06 21:34:06,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:06,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:06,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:06,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:06,515 INFO L87 Difference]: Start difference. First operand 260 states and 791 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) [2021-10-06 21:34:19,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:19,150 INFO L93 Difference]: Finished difference Result 515 states and 1296 transitions. [2021-10-06 21:34:19,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:34:19,152 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 [2021-10-06 21:34:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:19,155 INFO L225 Difference]: With dead ends: 515 [2021-10-06 21:34:19,155 INFO L226 Difference]: Without dead ends: 490 [2021-10-06 21:34:19,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 12256.5ms TimeCoverageRelationStatistics Valid=604, Invalid=2366, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:34:19,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-06 21:34:19,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 282. [2021-10-06 21:34:19,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 3.110320284697509) internal successors, (874), 281 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:19,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 874 transitions. [2021-10-06 21:34:19,165 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 874 transitions. Word has length 17 [2021-10-06 21:34:19,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:19,165 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 874 transitions. [2021-10-06 21:34:19,165 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) [2021-10-06 21:34:19,165 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 874 transitions. [2021-10-06 21:34:19,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:34:19,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:19,167 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:19,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:19,382 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 [2021-10-06 21:34:19,383 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)] === [2021-10-06 21:34:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:19,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1848383844, now seen corresponding path program 37 times [2021-10-06 21:34:19,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:19,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1349671112] [2021-10-06 21:34:19,384 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:34:19,385 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:19,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:19,386 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) [2021-10-06 21:34:19,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-06 21:34:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:34:20,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:20,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:20,639 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:20,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:22,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:22,635 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1349671112] [2021-10-06 21:34:22,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1349671112] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:22,635 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:22,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:34:22,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319254046] [2021-10-06 21:34:22,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:22,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:22,637 INFO L87 Difference]: Start difference. First operand 282 states and 874 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) [2021-10-06 21:34:32,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:32,923 INFO L93 Difference]: Finished difference Result 496 states and 1276 transitions. [2021-10-06 21:34:32,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:34:32,926 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 [2021-10-06 21:34:32,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:32,929 INFO L225 Difference]: With dead ends: 496 [2021-10-06 21:34:32,929 INFO L226 Difference]: Without dead ends: 466 [2021-10-06 21:34:32,929 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 9820.3ms TimeCoverageRelationStatistics Valid=414, Invalid=1566, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:34:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-10-06 21:34:32,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 286. [2021-10-06 21:34:32,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 3.1298245614035087) internal successors, (892), 285 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:32,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 892 transitions. [2021-10-06 21:34:32,939 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 892 transitions. Word has length 17 [2021-10-06 21:34:32,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:32,939 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 892 transitions. [2021-10-06 21:34:32,939 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) [2021-10-06 21:34:32,939 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 892 transitions. [2021-10-06 21:34:32,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:34:32,940 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:32,941 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:32,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-10-06 21:34:33,154 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 [2021-10-06 21:34:33,155 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)] === [2021-10-06 21:34:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:33,155 INFO L82 PathProgramCache]: Analyzing trace with hash 41002096, now seen corresponding path program 38 times [2021-10-06 21:34:33,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:33,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197649538] [2021-10-06 21:34:33,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:34:33,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:33,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:33,158 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) [2021-10-06 21:34:33,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-06 21:34:34,071 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:34:34,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:34,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:34,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:34,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:36,635 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:36,636 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:36,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197649538] [2021-10-06 21:34:36,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197649538] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:36,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:36,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:34:36,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877544928] [2021-10-06 21:34:36,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:36,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:36,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:36,638 INFO L87 Difference]: Start difference. First operand 286 states and 892 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) [2021-10-06 21:34:44,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:44,800 INFO L93 Difference]: Finished difference Result 411 states and 1109 transitions. [2021-10-06 21:34:44,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:34:44,802 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 [2021-10-06 21:34:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:44,804 INFO L225 Difference]: With dead ends: 411 [2021-10-06 21:34:44,804 INFO L226 Difference]: Without dead ends: 396 [2021-10-06 21:34:44,804 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 7865.6ms TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:34:44,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-10-06 21:34:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 280. [2021-10-06 21:34:44,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.1146953405017923) internal successors, (869), 279 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:44,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 869 transitions. [2021-10-06 21:34:44,812 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 869 transitions. Word has length 17 [2021-10-06 21:34:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:44,812 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 869 transitions. [2021-10-06 21:34:44,812 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) [2021-10-06 21:34:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 869 transitions. [2021-10-06 21:34:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:34:44,813 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:44,813 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:44,826 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:45,014 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 [2021-10-06 21:34:45,015 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)] === [2021-10-06 21:34:45,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1339984272, now seen corresponding path program 39 times [2021-10-06 21:34:45,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:45,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [584022613] [2021-10-06 21:34:45,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:34:45,016 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:45,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:45,018 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) [2021-10-06 21:34:45,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-06 21:34:45,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:34:45,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:45,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:45,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:46,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:46,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:48,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:48,339 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [584022613] [2021-10-06 21:34:48,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [584022613] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:48,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:48,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:34:48,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175766085] [2021-10-06 21:34:48,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:48,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:48,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:48,340 INFO L87 Difference]: Start difference. First operand 280 states and 869 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) [2021-10-06 21:34:54,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:54,509 INFO L93 Difference]: Finished difference Result 463 states and 1225 transitions. [2021-10-06 21:34:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:34:54,510 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 [2021-10-06 21:34:54,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:54,513 INFO L225 Difference]: With dead ends: 463 [2021-10-06 21:34:54,513 INFO L226 Difference]: Without dead ends: 448 [2021-10-06 21:34:54,514 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 5830.6ms TimeCoverageRelationStatistics Valid=276, Invalid=1206, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:34:54,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-06 21:34:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 294. [2021-10-06 21:34:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.167235494880546) internal successors, (928), 293 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 928 transitions. [2021-10-06 21:34:54,523 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 928 transitions. Word has length 17 [2021-10-06 21:34:54,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:54,523 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 928 transitions. [2021-10-06 21:34:54,524 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) [2021-10-06 21:34:54,524 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 928 transitions. [2021-10-06 21:34:54,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:34:54,525 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:54,525 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:54,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-06 21:34:54,741 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 [2021-10-06 21:34:54,742 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)] === [2021-10-06 21:34:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:54,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1342362856, now seen corresponding path program 40 times [2021-10-06 21:34:54,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:54,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037983497] [2021-10-06 21:34:54,743 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:34:54,744 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:54,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:54,745 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) [2021-10-06 21:34:54,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-06 21:34:55,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:34:55,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:55,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:34:55,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:56,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:57,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:57,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:57,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037983497] [2021-10-06 21:34:57,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037983497] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:57,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:57,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:34:57,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073400214] [2021-10-06 21:34:57,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:34:57,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:57,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:34:57,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:34:57,970 INFO L87 Difference]: Start difference. First operand 294 states and 928 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) [2021-10-06 21:35:10,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:10,836 INFO L93 Difference]: Finished difference Result 557 states and 1401 transitions. [2021-10-06 21:35:10,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:35:10,838 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 [2021-10-06 21:35:10,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:10,840 INFO L225 Difference]: With dead ends: 557 [2021-10-06 21:35:10,840 INFO L226 Difference]: Without dead ends: 532 [2021-10-06 21:35:10,841 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 12170.3ms TimeCoverageRelationStatistics Valid=637, Invalid=2443, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:35:10,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-10-06 21:35:10,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 294. [2021-10-06 21:35:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.1808873720136517) internal successors, (932), 293 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 932 transitions. [2021-10-06 21:35:10,851 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 932 transitions. Word has length 17 [2021-10-06 21:35:10,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:10,851 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 932 transitions. [2021-10-06 21:35:10,851 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) [2021-10-06 21:35:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 932 transitions. [2021-10-06 21:35:10,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:35:10,853 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:10,853 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:10,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:11,066 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 [2021-10-06 21:35:11,067 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)] === [2021-10-06 21:35:11,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:11,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1370068486, now seen corresponding path program 41 times [2021-10-06 21:35:11,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:11,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1834086093] [2021-10-06 21:35:11,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:35:11,068 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:11,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:11,070 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) [2021-10-06 21:35:11,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-06 21:35:11,935 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:35:11,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:11,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:35:11,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:12,376 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:12,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:14,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:14,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1834086093] [2021-10-06 21:35:14,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1834086093] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:14,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:14,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:35:14,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528148540] [2021-10-06 21:35:14,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:14,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:14,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:14,398 INFO L87 Difference]: Start difference. First operand 294 states and 932 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) [2021-10-06 21:35:25,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:25,570 INFO L93 Difference]: Finished difference Result 527 states and 1363 transitions. [2021-10-06 21:35:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:35:25,572 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 [2021-10-06 21:35:25,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:25,576 INFO L225 Difference]: With dead ends: 527 [2021-10-06 21:35:25,576 INFO L226 Difference]: Without dead ends: 472 [2021-10-06 21:35:25,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 10505.3ms TimeCoverageRelationStatistics Valid=548, Invalid=1902, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:35:25,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-06 21:35:25,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 294. [2021-10-06 21:35:25,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.068259385665529) internal successors, (899), 293 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 899 transitions. [2021-10-06 21:35:25,586 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 899 transitions. Word has length 17 [2021-10-06 21:35:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:25,586 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 899 transitions. [2021-10-06 21:35:25,586 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) [2021-10-06 21:35:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 899 transitions. [2021-10-06 21:35:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:35:25,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:25,587 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:25,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2021-10-06 21:35:25,787 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 [2021-10-06 21:35:25,788 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)] === [2021-10-06 21:35:25,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:25,789 INFO L82 PathProgramCache]: Analyzing trace with hash 294407435, now seen corresponding path program 42 times [2021-10-06 21:35:25,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:25,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397568870] [2021-10-06 21:35:25,790 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:35:25,790 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:25,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:25,791 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) [2021-10-06 21:35:25,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-06 21:35:26,759 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:35:26,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:26,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:35:26,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:27,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:28,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:28,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:28,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397568870] [2021-10-06 21:35:28,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397568870] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:28,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:28,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:35:28,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558609515] [2021-10-06 21:35:28,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:28,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:28,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:28,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:28,798 INFO L87 Difference]: Start difference. First operand 294 states and 899 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) [2021-10-06 21:35:34,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:34,021 INFO L93 Difference]: Finished difference Result 520 states and 1354 transitions. [2021-10-06 21:35:34,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:35:34,023 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 [2021-10-06 21:35:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:34,027 INFO L225 Difference]: With dead ends: 520 [2021-10-06 21:35:34,027 INFO L226 Difference]: Without dead ends: 502 [2021-10-06 21:35:34,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 4772.7ms TimeCoverageRelationStatistics Valid=500, Invalid=1392, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:35:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-06 21:35:34,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 306. [2021-10-06 21:35:34,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.1114754098360655) internal successors, (949), 305 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 949 transitions. [2021-10-06 21:35:34,037 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 949 transitions. Word has length 17 [2021-10-06 21:35:34,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:34,037 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 949 transitions. [2021-10-06 21:35:34,037 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) [2021-10-06 21:35:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 949 transitions. [2021-10-06 21:35:34,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:35:34,038 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:34,038 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:34,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:34,239 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 [2021-10-06 21:35:34,239 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)] === [2021-10-06 21:35:34,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:34,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1262890825, now seen corresponding path program 43 times [2021-10-06 21:35:34,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:34,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073563150] [2021-10-06 21:35:34,241 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:35:34,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:34,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:34,243 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) [2021-10-06 21:35:34,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-06 21:35:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:35:35,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:35:35,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:35,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:35,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:37,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:37,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:37,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073563150] [2021-10-06 21:35:37,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073563150] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:37,199 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:37,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:35:37,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217139355] [2021-10-06 21:35:37,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:37,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:37,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:37,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:37,200 INFO L87 Difference]: Start difference. First operand 306 states and 949 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) [2021-10-06 21:35:42,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:42,263 INFO L93 Difference]: Finished difference Result 500 states and 1318 transitions. [2021-10-06 21:35:42,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:35:42,264 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 [2021-10-06 21:35:42,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:42,267 INFO L225 Difference]: With dead ends: 500 [2021-10-06 21:35:42,267 INFO L226 Difference]: Without dead ends: 478 [2021-10-06 21:35:42,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 4471.1ms TimeCoverageRelationStatistics Valid=425, Invalid=1215, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:35:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-10-06 21:35:42,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 304. [2021-10-06 21:35:42,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 3.1584158415841586) internal successors, (957), 303 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 957 transitions. [2021-10-06 21:35:42,275 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 957 transitions. Word has length 17 [2021-10-06 21:35:42,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:42,275 INFO L470 AbstractCegarLoop]: Abstraction has 304 states and 957 transitions. [2021-10-06 21:35:42,275 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) [2021-10-06 21:35:42,276 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 957 transitions. [2021-10-06 21:35:42,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:35:42,277 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:42,277 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:42,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2021-10-06 21:35:42,481 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 [2021-10-06 21:35:42,482 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)] === [2021-10-06 21:35:42,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:42,482 INFO L82 PathProgramCache]: Analyzing trace with hash 2040944706, now seen corresponding path program 44 times [2021-10-06 21:35:42,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:42,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [980451696] [2021-10-06 21:35:42,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:35:42,484 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:42,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:42,485 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) [2021-10-06 21:35:42,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-06 21:35:43,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:35:43,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:43,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:35:43,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:43,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:46,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:46,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [980451696] [2021-10-06 21:35:46,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [980451696] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:46,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:46,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:35:46,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321338288] [2021-10-06 21:35:46,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:46,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:46,041 INFO L87 Difference]: Start difference. First operand 304 states and 957 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) [2021-10-06 21:35:50,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:50,354 INFO L93 Difference]: Finished difference Result 425 states and 1164 transitions. [2021-10-06 21:35:50,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:35:50,355 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 [2021-10-06 21:35:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:50,357 INFO L225 Difference]: With dead ends: 425 [2021-10-06 21:35:50,358 INFO L226 Difference]: Without dead ends: 410 [2021-10-06 21:35:50,358 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 4308.8ms TimeCoverageRelationStatistics Valid=245, Invalid=945, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:35:50,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-06 21:35:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 308. [2021-10-06 21:35:50,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.1433224755700326) internal successors, (965), 307 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:50,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 965 transitions. [2021-10-06 21:35:50,364 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 965 transitions. Word has length 17 [2021-10-06 21:35:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:50,365 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 965 transitions. [2021-10-06 21:35:50,365 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) [2021-10-06 21:35:50,365 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 965 transitions. [2021-10-06 21:35:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:35:50,366 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:50,366 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:50,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:50,575 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 [2021-10-06 21:35:50,576 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)] === [2021-10-06 21:35:50,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:50,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1967208602, now seen corresponding path program 45 times [2021-10-06 21:35:50,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:50,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618005463] [2021-10-06 21:35:50,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:50,577 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:50,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:50,579 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) [2021-10-06 21:35:50,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-06 21:35:51,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:35:51,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:51,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:35:51,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:52,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:53,811 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:53,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:53,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618005463] [2021-10-06 21:35:53,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618005463] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:53,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:53,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:35:53,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302253948] [2021-10-06 21:35:53,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:35:53,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:35:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:35:53,813 INFO L87 Difference]: Start difference. First operand 308 states and 965 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) [2021-10-06 21:35:59,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:59,563 INFO L93 Difference]: Finished difference Result 472 states and 1276 transitions. [2021-10-06 21:35:59,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:35:59,564 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 [2021-10-06 21:35:59,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:59,566 INFO L225 Difference]: With dead ends: 472 [2021-10-06 21:35:59,566 INFO L226 Difference]: Without dead ends: 462 [2021-10-06 21:35:59,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 5069.3ms TimeCoverageRelationStatistics Valid=342, Invalid=1464, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:35:59,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-06 21:35:59,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 316. [2021-10-06 21:35:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.196825396825397) internal successors, (1007), 315 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:59,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1007 transitions. [2021-10-06 21:35:59,577 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1007 transitions. Word has length 17 [2021-10-06 21:35:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:59,577 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1007 transitions. [2021-10-06 21:35:59,577 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) [2021-10-06 21:35:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1007 transitions. [2021-10-06 21:35:59,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:35:59,578 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:59,578 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:59,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-10-06 21:35:59,780 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 [2021-10-06 21:35:59,781 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)] === [2021-10-06 21:35:59,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:59,781 INFO L82 PathProgramCache]: Analyzing trace with hash 1964830018, now seen corresponding path program 46 times [2021-10-06 21:35:59,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:59,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423003145] [2021-10-06 21:35:59,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:35:59,782 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:59,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:59,784 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) [2021-10-06 21:35:59,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-06 21:36:00,791 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:36:00,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:00,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:36:00,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:01,209 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:01,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:03,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:03,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423003145] [2021-10-06 21:36:03,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423003145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:03,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:03,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:36:03,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280869004] [2021-10-06 21:36:03,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:36:03,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:03,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:36:03,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:36:03,053 INFO L87 Difference]: Start difference. First operand 316 states and 1007 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) [2021-10-06 21:36:15,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:15,750 INFO L93 Difference]: Finished difference Result 597 states and 1500 transitions. [2021-10-06 21:36:15,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:36:15,751 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 [2021-10-06 21:36:15,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:15,756 INFO L225 Difference]: With dead ends: 597 [2021-10-06 21:36:15,756 INFO L226 Difference]: Without dead ends: 572 [2021-10-06 21:36:15,757 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 11976.0ms TimeCoverageRelationStatistics Valid=749, Invalid=2557, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:36:15,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-06 21:36:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 320. [2021-10-06 21:36:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.225705329153605) internal successors, (1029), 319 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:15,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1029 transitions. [2021-10-06 21:36:15,770 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1029 transitions. Word has length 17 [2021-10-06 21:36:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:15,770 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 1029 transitions. [2021-10-06 21:36:15,770 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) [2021-10-06 21:36:15,770 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1029 transitions. [2021-10-06 21:36:15,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:36:15,772 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:15,772 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:15,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:15,986 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 [2021-10-06 21:36:15,987 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)] === [2021-10-06 21:36:15,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:15,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1937124388, now seen corresponding path program 47 times [2021-10-06 21:36:15,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:15,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460140037] [2021-10-06 21:36:15,988 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:36:15,988 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:15,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:15,990 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) [2021-10-06 21:36:15,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-06 21:36:17,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:36:17,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:17,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:36:17,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:17,487 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:17,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:19,436 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:19,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:19,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460140037] [2021-10-06 21:36:19,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460140037] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:19,437 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:19,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:36:19,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118072349] [2021-10-06 21:36:19,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:36:19,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:19,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:36:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:36:19,439 INFO L87 Difference]: Start difference. First operand 320 states and 1029 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) [2021-10-06 21:36:31,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:31,268 INFO L93 Difference]: Finished difference Result 589 states and 1528 transitions. [2021-10-06 21:36:31,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:36:31,269 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 [2021-10-06 21:36:31,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:31,282 INFO L225 Difference]: With dead ends: 589 [2021-10-06 21:36:31,282 INFO L226 Difference]: Without dead ends: 530 [2021-10-06 21:36:31,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 10987.1ms TimeCoverageRelationStatistics Valid=697, Invalid=2059, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:36:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-10-06 21:36:31,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 318. [2021-10-06 21:36:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.1514195583596214) internal successors, (999), 317 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:31,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 999 transitions. [2021-10-06 21:36:31,293 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 999 transitions. Word has length 17 [2021-10-06 21:36:31,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:31,294 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 999 transitions. [2021-10-06 21:36:31,294 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) [2021-10-06 21:36:31,294 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 999 transitions. [2021-10-06 21:36:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:36:31,295 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:31,296 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:31,318 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:31,510 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 [2021-10-06 21:36:31,511 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)] === [2021-10-06 21:36:31,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:31,511 INFO L82 PathProgramCache]: Analyzing trace with hash -693366987, now seen corresponding path program 48 times [2021-10-06 21:36:31,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:31,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429060272] [2021-10-06 21:36:31,512 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:36:31,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:31,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:31,514 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) [2021-10-06 21:36:31,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-06 21:36:32,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:36:32,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:32,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:36:32,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:33,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:33,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:35,182 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:35,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:35,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429060272] [2021-10-06 21:36:35,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429060272] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:35,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:35,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:36:35,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931275243] [2021-10-06 21:36:35,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:36:35,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:35,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:36:35,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:36:35,184 INFO L87 Difference]: Start difference. First operand 318 states and 999 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) [2021-10-06 21:36:44,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:44,060 INFO L93 Difference]: Finished difference Result 488 states and 1332 transitions. [2021-10-06 21:36:44,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:36:44,062 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 [2021-10-06 21:36:44,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:44,065 INFO L225 Difference]: With dead ends: 488 [2021-10-06 21:36:44,065 INFO L226 Difference]: Without dead ends: 468 [2021-10-06 21:36:44,065 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 8325.0ms TimeCoverageRelationStatistics Valid=547, Invalid=1615, Unknown=0, NotChecked=0, Total=2162 [2021-10-06 21:36:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-10-06 21:36:44,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 318. [2021-10-06 21:36:44,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.2018927444794953) internal successors, (1015), 317 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:44,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1015 transitions. [2021-10-06 21:36:44,074 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1015 transitions. Word has length 17 [2021-10-06 21:36:44,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:44,074 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1015 transitions. [2021-10-06 21:36:44,074 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) [2021-10-06 21:36:44,074 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1015 transitions. [2021-10-06 21:36:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:36:44,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:44,075 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:44,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2021-10-06 21:36:44,275 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 [2021-10-06 21:36:44,276 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)] === [2021-10-06 21:36:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:44,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2096815960, now seen corresponding path program 49 times [2021-10-06 21:36:44,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:44,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169789058] [2021-10-06 21:36:44,277 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:36:44,278 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:44,279 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) [2021-10-06 21:36:44,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-06 21:36:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:36:45,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:36:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:45,722 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:45,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:47,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:47,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:47,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169789058] [2021-10-06 21:36:47,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169789058] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:47,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:47,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:36:47,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095947427] [2021-10-06 21:36:47,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:36:47,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:47,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:36:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:36:47,501 INFO L87 Difference]: Start difference. First operand 318 states and 1015 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) [2021-10-06 21:36:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:58,940 INFO L93 Difference]: Finished difference Result 545 states and 1457 transitions. [2021-10-06 21:36:58,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:36:58,942 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 [2021-10-06 21:36:58,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:58,944 INFO L225 Difference]: With dead ends: 545 [2021-10-06 21:36:58,944 INFO L226 Difference]: Without dead ends: 520 [2021-10-06 21:36:58,945 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 11285.5ms TimeCoverageRelationStatistics Valid=597, Invalid=2373, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:36:58,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-06 21:36:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 336. [2021-10-06 21:36:58,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.2298507462686565) internal successors, (1082), 335 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1082 transitions. [2021-10-06 21:36:58,952 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1082 transitions. Word has length 17 [2021-10-06 21:36:58,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:58,953 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1082 transitions. [2021-10-06 21:36:58,953 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) [2021-10-06 21:36:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1082 transitions. [2021-10-06 21:36:58,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:36:58,953 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:58,954 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:58,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:59,154 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 [2021-10-06 21:36:59,155 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)] === [2021-10-06 21:36:59,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:59,155 INFO L82 PathProgramCache]: Analyzing trace with hash -2124521590, now seen corresponding path program 50 times [2021-10-06 21:36:59,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:59,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354571334] [2021-10-06 21:36:59,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:36:59,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:59,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:59,158 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) [2021-10-06 21:36:59,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-06 21:37:00,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:37:00,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:00,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:37:00,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:00,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:02,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:02,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:02,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354571334] [2021-10-06 21:37:02,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354571334] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:02,471 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:02,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:37:02,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694412273] [2021-10-06 21:37:02,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:37:02,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:02,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:37:02,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:37:02,472 INFO L87 Difference]: Start difference. First operand 336 states and 1082 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) [2021-10-06 21:37:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:11,358 INFO L93 Difference]: Finished difference Result 528 states and 1442 transitions. [2021-10-06 21:37:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:37:11,359 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 [2021-10-06 21:37:11,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:11,361 INFO L225 Difference]: With dead ends: 528 [2021-10-06 21:37:11,361 INFO L226 Difference]: Without dead ends: 498 [2021-10-06 21:37:11,361 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 326 ImplicationChecksByTransitivity, 8752.7ms TimeCoverageRelationStatistics Valid=375, Invalid=1431, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:37:11,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2021-10-06 21:37:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 340. [2021-10-06 21:37:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.2448377581120944) internal successors, (1100), 339 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1100 transitions. [2021-10-06 21:37:11,369 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1100 transitions. Word has length 17 [2021-10-06 21:37:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:11,370 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1100 transitions. [2021-10-06 21:37:11,370 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) [2021-10-06 21:37:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1100 transitions. [2021-10-06 21:37:11,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:37:11,371 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:11,371 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:11,386 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:11,571 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 [2021-10-06 21:37:11,572 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)] === [2021-10-06 21:37:11,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:11,572 INFO L82 PathProgramCache]: Analyzing trace with hash 363063958, now seen corresponding path program 51 times [2021-10-06 21:37:11,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:11,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004169339] [2021-10-06 21:37:11,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:37:11,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:11,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:11,575 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) [2021-10-06 21:37:11,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-06 21:37:12,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:37:12,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:12,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:37:12,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:13,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:14,978 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:14,979 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:14,979 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004169339] [2021-10-06 21:37:14,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004169339] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:14,980 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:14,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:37:14,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334294596] [2021-10-06 21:37:14,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:37:14,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:14,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:37:14,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:37:14,982 INFO L87 Difference]: Start difference. First operand 340 states and 1100 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) [2021-10-06 21:37:21,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:21,762 INFO L93 Difference]: Finished difference Result 465 states and 1317 transitions. [2021-10-06 21:37:21,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:37:21,764 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 [2021-10-06 21:37:21,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:21,765 INFO L225 Difference]: With dead ends: 465 [2021-10-06 21:37:21,765 INFO L226 Difference]: Without dead ends: 450 [2021-10-06 21:37:21,766 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 6739.9ms TimeCoverageRelationStatistics Valid=286, Invalid=1196, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:37:21,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-06 21:37:21,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 332. [2021-10-06 21:37:21,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 3.226586102719033) internal successors, (1068), 331 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:21,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 1068 transitions. [2021-10-06 21:37:21,774 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 1068 transitions. Word has length 17 [2021-10-06 21:37:21,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:21,774 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 1068 transitions. [2021-10-06 21:37:21,774 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) [2021-10-06 21:37:21,775 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 1068 transitions. [2021-10-06 21:37:21,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:37:21,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:21,776 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:21,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:21,981 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 [2021-10-06 21:37:21,982 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)] === [2021-10-06 21:37:21,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:21,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1017922410, now seen corresponding path program 52 times [2021-10-06 21:37:21,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:21,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896276312] [2021-10-06 21:37:21,983 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:37:21,983 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:21,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:21,985 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) [2021-10-06 21:37:21,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-06 21:37:23,107 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:37:23,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:23,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:37:23,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:23,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:23,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:25,251 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:25,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:25,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896276312] [2021-10-06 21:37:25,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896276312] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:25,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:25,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:37:25,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603646928] [2021-10-06 21:37:25,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:37:25,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:25,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:37:25,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:37:25,252 INFO L87 Difference]: Start difference. First operand 332 states and 1068 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) [2021-10-06 21:37:30,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:30,591 INFO L93 Difference]: Finished difference Result 501 states and 1394 transitions. [2021-10-06 21:37:30,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-10-06 21:37:30,592 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 [2021-10-06 21:37:30,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:30,594 INFO L225 Difference]: With dead ends: 501 [2021-10-06 21:37:30,594 INFO L226 Difference]: Without dead ends: 486 [2021-10-06 21:37:30,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 5132.1ms TimeCoverageRelationStatistics Valid=256, Invalid=1150, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:37:30,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-06 21:37:30,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 346. [2021-10-06 21:37:30,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.2666666666666666) internal successors, (1127), 345 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1127 transitions. [2021-10-06 21:37:30,602 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1127 transitions. Word has length 17 [2021-10-06 21:37:30,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:30,602 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 1127 transitions. [2021-10-06 21:37:30,602 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) [2021-10-06 21:37:30,602 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1127 transitions. [2021-10-06 21:37:30,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:37:30,603 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:30,603 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:30,618 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-06 21:37:30,803 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 [2021-10-06 21:37:30,804 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)] === [2021-10-06 21:37:30,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:30,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1020300994, now seen corresponding path program 53 times [2021-10-06 21:37:30,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:30,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092876031] [2021-10-06 21:37:30,805 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:37:30,806 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:30,807 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) [2021-10-06 21:37:30,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-06 21:37:32,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:37:32,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:32,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:37:32,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:32,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:32,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:34,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:34,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:34,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092876031] [2021-10-06 21:37:34,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092876031] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:34,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:34,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:37:34,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344154016] [2021-10-06 21:37:34,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:37:34,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:34,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:37:34,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:37:34,096 INFO L87 Difference]: Start difference. First operand 346 states and 1127 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) [2021-10-06 21:37:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:44,887 INFO L93 Difference]: Finished difference Result 587 states and 1544 transitions. [2021-10-06 21:37:44,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:37:44,888 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 [2021-10-06 21:37:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:44,890 INFO L225 Difference]: With dead ends: 587 [2021-10-06 21:37:44,890 INFO L226 Difference]: Without dead ends: 562 [2021-10-06 21:37:44,890 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 580 ImplicationChecksByTransitivity, 10390.9ms TimeCoverageRelationStatistics Valid=593, Invalid=2269, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:37:44,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-10-06 21:37:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 346. [2021-10-06 21:37:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.2782608695652176) internal successors, (1131), 345 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1131 transitions. [2021-10-06 21:37:44,899 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1131 transitions. Word has length 17 [2021-10-06 21:37:44,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:44,899 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 1131 transitions. [2021-10-06 21:37:44,899 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) [2021-10-06 21:37:44,899 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1131 transitions. [2021-10-06 21:37:44,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:37:44,900 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:44,900 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:44,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:45,101 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 [2021-10-06 21:37:45,101 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)] === [2021-10-06 21:37:45,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:45,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1048006624, now seen corresponding path program 54 times [2021-10-06 21:37:45,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:45,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520922080] [2021-10-06 21:37:45,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:37:45,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:45,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:45,104 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) [2021-10-06 21:37:45,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-06 21:37:46,452 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:37:46,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:46,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:37:46,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:46,876 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:46,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:48,586 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:48,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:48,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520922080] [2021-10-06 21:37:48,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520922080] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:48,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:48,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:37:48,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172322769] [2021-10-06 21:37:48,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:37:48,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:37:48,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:37:48,589 INFO L87 Difference]: Start difference. First operand 346 states and 1131 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) [2021-10-06 21:37:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:57,444 INFO L93 Difference]: Finished difference Result 559 states and 1511 transitions. [2021-10-06 21:37:57,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:37:57,446 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 [2021-10-06 21:37:57,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:57,447 INFO L225 Difference]: With dead ends: 559 [2021-10-06 21:37:57,447 INFO L226 Difference]: Without dead ends: 504 [2021-10-06 21:37:57,447 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 383 ImplicationChecksByTransitivity, 8499.4ms TimeCoverageRelationStatistics Valid=468, Invalid=1602, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:37:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-10-06 21:37:57,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 342. [2021-10-06 21:37:57,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 3.19941348973607) internal successors, (1091), 341 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:57,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1091 transitions. [2021-10-06 21:37:57,455 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1091 transitions. Word has length 17 [2021-10-06 21:37:57,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:57,455 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 1091 transitions. [2021-10-06 21:37:57,455 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) [2021-10-06 21:37:57,455 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1091 transitions. [2021-10-06 21:37:57,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:37:57,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:57,457 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:57,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:57,661 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 [2021-10-06 21:37:57,662 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)] === [2021-10-06 21:37:57,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:57,664 INFO L82 PathProgramCache]: Analyzing trace with hash 616469297, now seen corresponding path program 55 times [2021-10-06 21:37:57,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:57,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723400381] [2021-10-06 21:37:57,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:37:57,665 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:57,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:57,666 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) [2021-10-06 21:37:57,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-06 21:37:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:37:58,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:37:58,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:59,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:59,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:00,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:00,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723400381] [2021-10-06 21:38:00,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723400381] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:00,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:00,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:38:00,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803712397] [2021-10-06 21:38:00,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:38:00,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:00,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:38:00,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:38:00,752 INFO L87 Difference]: Start difference. First operand 342 states and 1091 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) [2021-10-06 21:38:05,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:05,479 INFO L93 Difference]: Finished difference Result 554 states and 1516 transitions. [2021-10-06 21:38:05,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:38:05,481 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 [2021-10-06 21:38:05,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:05,482 INFO L225 Difference]: With dead ends: 554 [2021-10-06 21:38:05,482 INFO L226 Difference]: Without dead ends: 536 [2021-10-06 21:38:05,482 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 4234.0ms TimeCoverageRelationStatistics Valid=431, Invalid=1209, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:38:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2021-10-06 21:38:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 346. [2021-10-06 21:38:05,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.208695652173913) internal successors, (1107), 345 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) [2021-10-06 21:38:05,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1107 transitions. [2021-10-06 21:38:05,492 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1107 transitions. Word has length 17 [2021-10-06 21:38:05,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:05,492 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 1107 transitions. [2021-10-06 21:38:05,492 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) [2021-10-06 21:38:05,492 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1107 transitions. [2021-10-06 21:38:05,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:38:05,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:05,493 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:05,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-06 21:38:05,693 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 [2021-10-06 21:38:05,694 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)] === [2021-10-06 21:38:05,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:05,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1584952687, now seen corresponding path program 56 times [2021-10-06 21:38:05,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:05,696 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [257524048] [2021-10-06 21:38:05,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:38:05,697 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:05,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:05,698 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) [2021-10-06 21:38:05,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-06 21:38:06,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:38:06,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:06,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:38:06,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:07,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:07,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:08,968 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:08,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:08,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [257524048] [2021-10-06 21:38:08,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [257524048] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:08,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:08,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:38:08,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530361775] [2021-10-06 21:38:08,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:38:08,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:08,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:38:08,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:38:08,971 INFO L87 Difference]: Start difference. First operand 346 states and 1107 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) [2021-10-06 21:38:13,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:13,724 INFO L93 Difference]: Finished difference Result 532 states and 1462 transitions. [2021-10-06 21:38:13,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:38:13,725 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 [2021-10-06 21:38:13,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:13,727 INFO L225 Difference]: With dead ends: 532 [2021-10-06 21:38:13,727 INFO L226 Difference]: Without dead ends: 510 [2021-10-06 21:38:13,727 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 4113.1ms TimeCoverageRelationStatistics Valid=390, Invalid=1092, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:38:13,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-06 21:38:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 328. [2021-10-06 21:38:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.223241590214067) internal successors, (1054), 327 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:13,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1054 transitions. [2021-10-06 21:38:13,734 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1054 transitions. Word has length 17 [2021-10-06 21:38:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:13,734 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1054 transitions. [2021-10-06 21:38:13,734 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) [2021-10-06 21:38:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1054 transitions. [2021-10-06 21:38:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:38:13,735 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:13,735 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:13,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:13,936 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 [2021-10-06 21:38:13,936 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)] === [2021-10-06 21:38:13,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:13,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1931960728, now seen corresponding path program 57 times [2021-10-06 21:38:13,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:13,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914324056] [2021-10-06 21:38:13,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:38:13,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:13,939 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) [2021-10-06 21:38:13,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-06 21:38:15,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:38:15,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:15,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:38:15,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:15,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:17,090 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:17,090 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914324056] [2021-10-06 21:38:17,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914324056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:17,090 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:17,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:38:17,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761053882] [2021-10-06 21:38:17,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:38:17,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:17,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:38:17,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:38:17,093 INFO L87 Difference]: Start difference. First operand 328 states and 1054 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) [2021-10-06 21:38:21,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:21,039 INFO L93 Difference]: Finished difference Result 437 states and 1234 transitions. [2021-10-06 21:38:21,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:38:21,040 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 [2021-10-06 21:38:21,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:21,041 INFO L225 Difference]: With dead ends: 437 [2021-10-06 21:38:21,041 INFO L226 Difference]: Without dead ends: 422 [2021-10-06 21:38:21,042 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 3591.5ms TimeCoverageRelationStatistics Valid=254, Invalid=1078, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:38:21,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-10-06 21:38:21,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 334. [2021-10-06 21:38:21,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.204204204204204) internal successors, (1067), 333 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1067 transitions. [2021-10-06 21:38:21,049 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1067 transitions. Word has length 17 [2021-10-06 21:38:21,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:21,049 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 1067 transitions. [2021-10-06 21:38:21,050 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) [2021-10-06 21:38:21,050 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1067 transitions. [2021-10-06 21:38:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:38:21,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:21,051 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:21,066 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:21,251 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 [2021-10-06 21:38:21,252 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)] === [2021-10-06 21:38:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:21,252 INFO L82 PathProgramCache]: Analyzing trace with hash -2005696832, now seen corresponding path program 58 times [2021-10-06 21:38:21,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:21,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206950626] [2021-10-06 21:38:21,253 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:38:21,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:21,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:21,255 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) [2021-10-06 21:38:21,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-06 21:38:22,525 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:38:22,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:22,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:38:22,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:22,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:24,648 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:24,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:24,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206950626] [2021-10-06 21:38:24,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206950626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:24,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:24,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:38:24,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957706117] [2021-10-06 21:38:24,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:38:24,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:24,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:38:24,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:38:24,651 INFO L87 Difference]: Start difference. First operand 334 states and 1067 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) [2021-10-06 21:38:30,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:30,374 INFO L93 Difference]: Finished difference Result 512 states and 1413 transitions. [2021-10-06 21:38:30,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:38:30,375 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 [2021-10-06 21:38:30,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:30,377 INFO L225 Difference]: With dead ends: 512 [2021-10-06 21:38:30,377 INFO L226 Difference]: Without dead ends: 502 [2021-10-06 21:38:30,377 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 5248.0ms TimeCoverageRelationStatistics Valid=344, Invalid=1378, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:38:30,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2021-10-06 21:38:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 342. [2021-10-06 21:38:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 341 states have (on average 3.2521994134897363) internal successors, (1109), 341 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 1109 transitions. [2021-10-06 21:38:30,385 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 1109 transitions. Word has length 17 [2021-10-06 21:38:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:30,385 INFO L470 AbstractCegarLoop]: Abstraction has 342 states and 1109 transitions. [2021-10-06 21:38:30,385 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) [2021-10-06 21:38:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 1109 transitions. [2021-10-06 21:38:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:38:30,386 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:30,386 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:30,402 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2021-10-06 21:38:30,587 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 [2021-10-06 21:38:30,587 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)] === [2021-10-06 21:38:30,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:30,588 INFO L82 PathProgramCache]: Analyzing trace with hash -2008075416, now seen corresponding path program 59 times [2021-10-06 21:38:30,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:30,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783252327] [2021-10-06 21:38:30,590 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:38:30,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:30,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:30,591 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) [2021-10-06 21:38:30,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-06 21:38:31,872 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:38:31,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:31,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:38:31,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:32,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:33,938 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:33,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:33,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783252327] [2021-10-06 21:38:33,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783252327] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:33,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:33,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:38:33,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649211610] [2021-10-06 21:38:33,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:38:33,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:33,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:38:33,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:38:33,940 INFO L87 Difference]: Start difference. First operand 342 states and 1109 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) [2021-10-06 21:38:44,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:44,958 INFO L93 Difference]: Finished difference Result 609 states and 1589 transitions. [2021-10-06 21:38:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:38:44,959 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 [2021-10-06 21:38:44,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:44,960 INFO L225 Difference]: With dead ends: 609 [2021-10-06 21:38:44,960 INFO L226 Difference]: Without dead ends: 584 [2021-10-06 21:38:44,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 10592.6ms TimeCoverageRelationStatistics Valid=728, Invalid=2464, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:38:44,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-06 21:38:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 344. [2021-10-06 21:38:44,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 3.282798833819242) internal successors, (1126), 343 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 1126 transitions. [2021-10-06 21:38:44,976 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 1126 transitions. Word has length 17 [2021-10-06 21:38:44,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:44,976 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 1126 transitions. [2021-10-06 21:38:44,976 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) [2021-10-06 21:38:44,976 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 1126 transitions. [2021-10-06 21:38:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:38:44,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:44,977 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:44,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:45,184 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 [2021-10-06 21:38:45,185 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)] === [2021-10-06 21:38:45,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:45,185 INFO L82 PathProgramCache]: Analyzing trace with hash -2035781046, now seen corresponding path program 60 times [2021-10-06 21:38:45,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:45,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692861361] [2021-10-06 21:38:45,186 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:38:45,186 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:45,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:45,188 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) [2021-10-06 21:38:45,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-06 21:38:46,660 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:38:46,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:46,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:38:46,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:47,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:48,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:48,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:48,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692861361] [2021-10-06 21:38:48,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692861361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:48,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:48,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:38:48,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345449154] [2021-10-06 21:38:48,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:38:48,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:48,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:38:48,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:38:48,711 INFO L87 Difference]: Start difference. First operand 344 states and 1126 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) [2021-10-06 21:39:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:00,928 INFO L93 Difference]: Finished difference Result 608 states and 1624 transitions. [2021-10-06 21:39:00,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-10-06 21:39:00,929 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 [2021-10-06 21:39:00,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:00,932 INFO L225 Difference]: With dead ends: 608 [2021-10-06 21:39:00,932 INFO L226 Difference]: Without dead ends: 544 [2021-10-06 21:39:00,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 678 ImplicationChecksByTransitivity, 11578.5ms TimeCoverageRelationStatistics Valid=743, Invalid=2227, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:39:00,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-06 21:39:00,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 340. [2021-10-06 21:39:00,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.206489675516224) internal successors, (1087), 339 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1087 transitions. [2021-10-06 21:39:00,943 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1087 transitions. Word has length 17 [2021-10-06 21:39:00,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:00,943 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1087 transitions. [2021-10-06 21:39:00,943 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) [2021-10-06 21:39:00,943 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1087 transitions. [2021-10-06 21:39:00,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:39:00,944 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:00,944 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:00,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:01,145 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 [2021-10-06 21:39:01,145 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)] === [2021-10-06 21:39:01,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:01,146 INFO L82 PathProgramCache]: Analyzing trace with hash -371305125, now seen corresponding path program 61 times [2021-10-06 21:39:01,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:01,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132855930] [2021-10-06 21:39:01,147 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:39:01,147 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:01,148 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) [2021-10-06 21:39:01,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-06 21:39:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:39:02,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:39:02,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:02,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:04,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:04,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132855930] [2021-10-06 21:39:04,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132855930] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:04,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:04,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:39:04,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625397378] [2021-10-06 21:39:04,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:39:04,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:04,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:39:04,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:39:04,975 INFO L87 Difference]: Start difference. First operand 340 states and 1087 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) [2021-10-06 21:39:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:13,877 INFO L93 Difference]: Finished difference Result 506 states and 1418 transitions. [2021-10-06 21:39:13,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:39:13,879 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 [2021-10-06 21:39:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:13,880 INFO L225 Difference]: With dead ends: 506 [2021-10-06 21:39:13,880 INFO L226 Difference]: Without dead ends: 486 [2021-10-06 21:39:13,880 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 8102.4ms TimeCoverageRelationStatistics Valid=506, Invalid=1474, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:39:13,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-06 21:39:13,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 292. [2021-10-06 21:39:13,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 3.2061855670103094) internal successors, (933), 291 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:13,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 933 transitions. [2021-10-06 21:39:13,887 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 933 transitions. Word has length 17 [2021-10-06 21:39:13,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:13,887 INFO L470 AbstractCegarLoop]: Abstraction has 292 states and 933 transitions. [2021-10-06 21:39:13,887 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) [2021-10-06 21:39:13,887 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 933 transitions. [2021-10-06 21:39:13,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:39:13,888 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:13,888 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:13,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:14,088 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 [2021-10-06 21:39:14,089 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)] === [2021-10-06 21:39:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:14,089 INFO L82 PathProgramCache]: Analyzing trace with hash -738621347, now seen corresponding path program 62 times [2021-10-06 21:39:14,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:14,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683750537] [2021-10-06 21:39:14,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:39:14,091 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:14,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:14,092 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) [2021-10-06 21:39:14,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-06 21:39:15,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:39:15,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:15,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:39:15,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:16,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:18,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:18,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:18,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683750537] [2021-10-06 21:39:18,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683750537] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:18,112 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:18,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:39:18,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798148431] [2021-10-06 21:39:18,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:39:18,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:18,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:39:18,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:39:18,113 INFO L87 Difference]: Start difference. First operand 292 states and 933 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:36,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:36,647 INFO L93 Difference]: Finished difference Result 710 states and 1825 transitions. [2021-10-06 21:39:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 21:39:36,648 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:39:36,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:36,650 INFO L225 Difference]: With dead ends: 710 [2021-10-06 21:39:36,650 INFO L226 Difference]: Without dead ends: 690 [2021-10-06 21:39:36,650 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1533 ImplicationChecksByTransitivity, 18083.2ms TimeCoverageRelationStatistics Valid=1164, Invalid=4688, Unknown=0, NotChecked=0, Total=5852 [2021-10-06 21:39:36,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-06 21:39:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 316. [2021-10-06 21:39:36,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.253968253968254) internal successors, (1025), 315 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:36,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1025 transitions. [2021-10-06 21:39:36,659 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1025 transitions. Word has length 19 [2021-10-06 21:39:36,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:36,659 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1025 transitions. [2021-10-06 21:39:36,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:36,660 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1025 transitions. [2021-10-06 21:39:36,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:39:36,661 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:36,661 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:36,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:36,874 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 [2021-10-06 21:39:36,874 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)] === [2021-10-06 21:39:36,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:36,875 INFO L82 PathProgramCache]: Analyzing trace with hash -766326977, now seen corresponding path program 63 times [2021-10-06 21:39:36,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:36,876 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415080632] [2021-10-06 21:39:36,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:39:36,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:36,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:36,877 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) [2021-10-06 21:39:36,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-06 21:39:38,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:39:38,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:38,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:39:38,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:39,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:41,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:41,243 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:41,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415080632] [2021-10-06 21:39:41,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415080632] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:41,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:41,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:39:41,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251116664] [2021-10-06 21:39:41,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:39:41,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:41,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:39:41,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:39:41,246 INFO L87 Difference]: Start difference. First operand 316 states and 1025 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:54,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:54,717 INFO L93 Difference]: Finished difference Result 756 states and 1907 transitions. [2021-10-06 21:39:54,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-10-06 21:39:54,719 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:39:54,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:54,721 INFO L225 Difference]: With dead ends: 756 [2021-10-06 21:39:54,721 INFO L226 Difference]: Without dead ends: 736 [2021-10-06 21:39:54,721 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 12730.4ms TimeCoverageRelationStatistics Valid=914, Invalid=3916, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 21:39:54,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-06 21:39:54,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 316. [2021-10-06 21:39:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 3.253968253968254) internal successors, (1025), 315 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 1025 transitions. [2021-10-06 21:39:54,730 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 1025 transitions. Word has length 19 [2021-10-06 21:39:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:54,730 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 1025 transitions. [2021-10-06 21:39:54,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 1025 transitions. [2021-10-06 21:39:54,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:39:54,731 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:54,731 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:54,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:54,931 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 [2021-10-06 21:39:54,932 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)] === [2021-10-06 21:39:54,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:54,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1721258571, now seen corresponding path program 64 times [2021-10-06 21:39:54,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:54,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749598379] [2021-10-06 21:39:54,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:39:54,939 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:54,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:54,939 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) [2021-10-06 21:39:54,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-06 21:39:56,447 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:39:56,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:56,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:39:56,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:56,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:59,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:59,083 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:59,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749598379] [2021-10-06 21:39:59,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749598379] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:59,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:59,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:39:59,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225931607] [2021-10-06 21:39:59,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:39:59,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:59,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:39:59,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:39:59,085 INFO L87 Difference]: Start difference. First operand 316 states and 1025 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:13,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:13,220 INFO L93 Difference]: Finished difference Result 641 states and 1681 transitions. [2021-10-06 21:40:13,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:40:13,221 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:40:13,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:13,223 INFO L225 Difference]: With dead ends: 641 [2021-10-06 21:40:13,223 INFO L226 Difference]: Without dead ends: 626 [2021-10-06 21:40:13,223 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1357 ImplicationChecksByTransitivity, 13945.8ms TimeCoverageRelationStatistics Valid=1001, Invalid=4111, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:40:13,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2021-10-06 21:40:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 320. [2021-10-06 21:40:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.269592476489028) internal successors, (1043), 319 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 1043 transitions. [2021-10-06 21:40:13,233 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 1043 transitions. Word has length 19 [2021-10-06 21:40:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:13,234 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 1043 transitions. [2021-10-06 21:40:13,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:13,234 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 1043 transitions. [2021-10-06 21:40:13,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:40:13,235 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:13,235 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:13,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-06 21:40:13,435 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 [2021-10-06 21:40:13,435 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)] === [2021-10-06 21:40:13,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:13,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1683765245, now seen corresponding path program 65 times [2021-10-06 21:40:13,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:13,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1749976923] [2021-10-06 21:40:13,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:40:13,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:13,439 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) [2021-10-06 21:40:13,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-06 21:40:14,959 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:40:14,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:40:14,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:40:14,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:15,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:40:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:17,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:40:17,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1749976923] [2021-10-06 21:40:17,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1749976923] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:40:17,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:40:17,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:40:17,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595812244] [2021-10-06 21:40:17,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:40:17,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:40:17,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:40:17,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:40:17,602 INFO L87 Difference]: Start difference. First operand 320 states and 1043 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:35,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:35,761 INFO L93 Difference]: Finished difference Result 725 states and 1940 transitions. [2021-10-06 21:40:35,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-10-06 21:40:35,762 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:40:35,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:35,764 INFO L225 Difference]: With dead ends: 725 [2021-10-06 21:40:35,764 INFO L226 Difference]: Without dead ends: 710 [2021-10-06 21:40:35,764 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 18029.8ms TimeCoverageRelationStatistics Valid=1352, Invalid=4654, Unknown=0, NotChecked=0, Total=6006 [2021-10-06 21:40:35,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-10-06 21:40:35,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 340. [2021-10-06 21:40:35,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.3185840707964602) internal successors, (1125), 339 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:35,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1125 transitions. [2021-10-06 21:40:35,774 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1125 transitions. Word has length 19 [2021-10-06 21:40:35,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:35,774 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1125 transitions. [2021-10-06 21:40:35,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:35,775 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1125 transitions. [2021-10-06 21:40:35,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:40:35,775 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:35,776 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:35,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-06 21:40:35,977 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 [2021-10-06 21:40:35,977 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)] === [2021-10-06 21:40:35,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:35,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1711470875, now seen corresponding path program 66 times [2021-10-06 21:40:35,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:35,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366799495] [2021-10-06 21:40:35,979 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:40:35,979 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:35,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:35,981 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) [2021-10-06 21:40:35,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-06 21:40:37,557 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:40:37,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:40:37,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:40:37,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:38,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:40:39,945 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:39,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:40:39,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366799495] [2021-10-06 21:40:39,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366799495] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:40:39,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:40:39,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:40:39,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600704968] [2021-10-06 21:40:39,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:40:39,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:40:39,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:40:39,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:40:39,947 INFO L87 Difference]: Start difference. First operand 340 states and 1125 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:40:56,465 INFO L93 Difference]: Finished difference Result 780 states and 2026 transitions. [2021-10-06 21:40:56,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-06 21:40:56,467 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:40:56,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:40:56,469 INFO L225 Difference]: With dead ends: 780 [2021-10-06 21:40:56,469 INFO L226 Difference]: Without dead ends: 760 [2021-10-06 21:40:56,470 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1701 ImplicationChecksByTransitivity, 15789.0ms TimeCoverageRelationStatistics Valid=1330, Invalid=4990, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 21:40:56,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2021-10-06 21:40:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 340. [2021-10-06 21:40:56,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.3185840707964602) internal successors, (1125), 339 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:56,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1125 transitions. [2021-10-06 21:40:56,487 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1125 transitions. Word has length 19 [2021-10-06 21:40:56,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:40:56,487 INFO L470 AbstractCegarLoop]: Abstraction has 340 states and 1125 transitions. [2021-10-06 21:40:56,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:40:56,487 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1125 transitions. [2021-10-06 21:40:56,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:40:56,489 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:40:56,489 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:40:56,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-06 21:40:56,702 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 [2021-10-06 21:40:56,702 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)] === [2021-10-06 21:40:56,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:40:56,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1595721999, now seen corresponding path program 67 times [2021-10-06 21:40:56,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:40:56,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787325025] [2021-10-06 21:40:56,703 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:40:56,704 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:40:56,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:40:56,705 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) [2021-10-06 21:40:56,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-06 21:40:58,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:40:58,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:40:58,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:40:58,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:40:58,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:41:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:01,465 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:41:01,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787325025] [2021-10-06 21:41:01,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787325025] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:41:01,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:41:01,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:41:01,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698169523] [2021-10-06 21:41:01,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:41:01,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:41:01,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:41:01,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:41:01,466 INFO L87 Difference]: Start difference. First operand 340 states and 1125 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:28,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:41:28,006 INFO L93 Difference]: Finished difference Result 730 states and 1941 transitions. [2021-10-06 21:41:28,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-06 21:41:28,008 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:41:28,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:41:28,010 INFO L225 Difference]: With dead ends: 730 [2021-10-06 21:41:28,010 INFO L226 Difference]: Without dead ends: 710 [2021-10-06 21:41:28,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1954 ImplicationChecksByTransitivity, 25905.2ms TimeCoverageRelationStatistics Valid=1457, Invalid=5683, Unknown=0, NotChecked=0, Total=7140 [2021-10-06 21:41:28,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-10-06 21:41:28,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 354. [2021-10-06 21:41:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 3.365439093484419) internal successors, (1188), 353 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 1188 transitions. [2021-10-06 21:41:28,021 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 1188 transitions. Word has length 19 [2021-10-06 21:41:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:41:28,022 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 1188 transitions. [2021-10-06 21:41:28,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:28,022 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 1188 transitions. [2021-10-06 21:41:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:41:28,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:41:28,023 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:41:28,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Forceful destruction successful, exit code 0 [2021-10-06 21:41:28,229 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 [2021-10-06 21:41:28,230 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)] === [2021-10-06 21:41:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:41:28,230 INFO L82 PathProgramCache]: Analyzing trace with hash -1592646117, now seen corresponding path program 68 times [2021-10-06 21:41:28,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:41:28,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826287220] [2021-10-06 21:41:28,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:41:28,232 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:41:28,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:41:28,233 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) [2021-10-06 21:41:28,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-06 21:41:29,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:41:29,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:41:29,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:41:29,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:41:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:30,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:41:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:32,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:41:32,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826287220] [2021-10-06 21:41:32,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826287220] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:41:32,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:41:32,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:41:32,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243555612] [2021-10-06 21:41:32,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:41:32,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:41:32,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:41:32,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:41:32,311 INFO L87 Difference]: Start difference. First operand 354 states and 1188 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:49,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:41:49,308 INFO L93 Difference]: Finished difference Result 683 states and 1901 transitions. [2021-10-06 21:41:49,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-10-06 21:41:49,309 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-06 21:41:49,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:41:49,311 INFO L225 Difference]: With dead ends: 683 [2021-10-06 21:41:49,311 INFO L226 Difference]: Without dead ends: 668 [2021-10-06 21:41:49,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1505 ImplicationChecksByTransitivity, 16775.8ms TimeCoverageRelationStatistics Valid=1200, Invalid=4500, Unknown=0, NotChecked=0, Total=5700 [2021-10-06 21:41:49,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-10-06 21:41:49,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 376. [2021-10-06 21:41:49,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 375 states have (on average 3.421333333333333) internal successors, (1283), 375 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:49,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 1283 transitions. [2021-10-06 21:41:49,323 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 1283 transitions. Word has length 19 [2021-10-06 21:41:49,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:41:49,324 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 1283 transitions. [2021-10-06 21:41:49,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:41:49,324 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 1283 transitions. [2021-10-06 21:41:49,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:41:49,325 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:41:49,325 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:41:49,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-06 21:41:49,525 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 [2021-10-06 21:41:49,525 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)] === [2021-10-06 21:41:49,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:41:49,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1595024701, now seen corresponding path program 69 times [2021-10-06 21:41:49,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:41:49,527 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403246348] [2021-10-06 21:41:49,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:41:49,527 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:41:49,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:41:49,529 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) [2021-10-06 21:41:49,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-06 21:41:51,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:41:51,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:41:51,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:41:51,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:41:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:51,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:41:53,420 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:41:53,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:41:53,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403246348] [2021-10-06 21:41:53,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403246348] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:41:53,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:41:53,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:41:53,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578261217] [2021-10-06 21:41:53,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:41:53,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:41:53,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:41:53,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:41:53,426 INFO L87 Difference]: Start difference. First operand 376 states and 1283 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2021-10-06 21:41:55,202 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:41:55,203 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 [2021-10-06 21:41:55,204 WARN L223 SmtUtils]: Removed 3 from assertion stack [2021-10-06 21:41:55,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-06 21:41:55,205 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:41:55,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Ended with exit code 0 [2021-10-06 21:41:55,406 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 [2021-10-06 21:41:55,407 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. [2021-10-06 21:41:55,410 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:41:55,410 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:41:55,410 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:41:55,411 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:41:55,415 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:41:55,415 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:41:55,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:41:55 BasicIcfg [2021-10-06 21:41:55,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:41:55,418 INFO L168 Benchmark]: Toolchain (without parser) took 819902.85 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 125.0 MB in the beginning and 90.6 MB in the end (delta: 34.4 MB). Peak memory consumption was 73.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:41:55,418 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:41:55,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.07 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 114.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:41:55,419 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.06 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:41:55,419 INFO L168 Benchmark]: Boogie Preprocessor took 32.21 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 111.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:41:55,419 INFO L168 Benchmark]: RCFGBuilder took 692.79 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 132.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2021-10-06 21:41:55,420 INFO L168 Benchmark]: TraceAbstraction took 818839.79 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 131.7 MB in the beginning and 90.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:41:55,421 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 122.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.07 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 114.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.06 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.21 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 111.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 692.79 ms. Allocated memory is still 151.0 MB. Free memory was 111.2 MB in the beginning and 132.3 MB in the end (delta: -21.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 818839.79 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 131.7 MB in the beginning and 90.6 MB in the end (delta: 41.1 MB). Peak memory consumption was 78.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7484.7ms, 84 PlacesBefore, 32 PlacesAfterwards, 83 TransitionsBefore, 27 TransitionsAfterwards, 462 CoEnabledTransitionPairs, 6 FixpointIterations, 53 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 86 TotalNumberOfCompositions, 574 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 550, positive: 548, positive conditional: 0, positive unconditional: 548, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 253, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 253, positive: 251, positive conditional: 0, positive unconditional: 251, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 40, negative conditional: 0, negative unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 550, positive: 297, positive conditional: 0, positive unconditional: 297, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 253, unknown conditional: 0, unknown unconditional: 253] , 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: 74]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 60]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 69]: 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 (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - TimeoutResultAtElement [Line: 68]: 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 (376states) and FLOYD_HOARE automaton (currently 14 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 63 for 283ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 818714.8ms, OverallIterations: 76, TraceHistogramMax: 4, EmptinessCheckTime: 82.7ms, AutomataDifference: 592396.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7544.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3377 SDtfs, 14946 SDslu, 26800 SDs, 0 SdLazy, 29574 SolverSat, 4349 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 82876.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4263 GetRequests, 1027 SyntacticMatches, 2 SemanticMatches, 3233 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39522 ImplicationChecksByTransitivity, 569032.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=376occurred in iteration=75, InterpolantAutomatonStates: 2860, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 668.8ms AutomataMinimizationTime, 75 MinimizatonAttempts, 12717 StatesRemovedByMinimization, 68 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 451.8ms SsaConstructionTime, 8606.8ms SatisfiabilityAnalysisTime, 145038.6ms InterpolantComputationTime, 1213 NumberOfCodeBlocks, 1213 NumberOfCodeBlocksAsserted, 152 NumberOfCheckSat, 2274 ConstructedInterpolants, 0 QuantifiedInterpolants, 49328 SizeOfPredicates, 431 NumberOfNonLiveVariables, 5219 ConjunctsInSsa, 1369 ConjunctsInUnsatCore, 152 InterpolantComputations, 14 PerfectInterpolantSequences, 2/942 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