/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/popl20/figure1-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:26:11,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:26:11,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:26:11,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:26:12,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:26:12,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:26:12,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:26:12,009 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 21:26:12,038 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:26:12,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:26:12,038 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:26:12,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:26:12,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:26:12,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:26:12,041 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:26:12,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:26:12,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:26:12,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:26:12,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:26:12,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:26:12,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:26:12,042 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:26:12,042 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:26:12,042 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:26:12,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:26:12,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:26:12,043 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:26:12,043 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:26:12,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:26:12,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:26:12,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:26:12,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:26:12,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:26:12,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:26:12,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:26:12,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:26:12,045 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:26:12,045 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:26:12,045 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:26:12,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:26:12,046 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:26:12,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:26:12,435 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:26:12,439 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:26:12,441 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:26:12,441 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:26:12,442 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20/figure1-alt.wvr.c [2021-10-06 21:26:12,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42711986c/2de4192c2260499cb99f9cb0dc00469c/FLAGe064f6897 [2021-10-06 21:26:13,116 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:26:13,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/figure1-alt.wvr.c [2021-10-06 21:26:13,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42711986c/2de4192c2260499cb99f9cb0dc00469c/FLAGe064f6897 [2021-10-06 21:26:13,513 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/42711986c/2de4192c2260499cb99f9cb0dc00469c [2021-10-06 21:26:13,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:26:13,530 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:26:13,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:26:13,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:26:13,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:26:13,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:13,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14f68bcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13, skipping insertion in model container [2021-10-06 21:26:13,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:13,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:26:13,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:26:13,831 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/figure1-alt.wvr.c[2035,2048] [2021-10-06 21:26:13,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:26:13,858 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:26:13,895 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/popl20/figure1-alt.wvr.c[2035,2048] [2021-10-06 21:26:13,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:26:13,927 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:26:13,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13 WrapperNode [2021-10-06 21:26:13,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:26:13,929 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:26:13,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:26:13,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:26:13,938 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:13,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:13,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:26:13,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:26:13,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:26:13,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:26:14,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,038 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:26:14,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:26:14,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:26:14,059 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:26:14,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (1/1) ... [2021-10-06 21:26:14,070 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:26:14,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:26:14,098 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 21:26:14,115 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 21:26:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:26:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:26:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:26:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:26:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:26:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:26:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:26:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:26:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:26:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:26:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:26:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:26:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:26:14,165 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 21:26:14,656 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:26:14,656 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-06 21:26:14,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:26:14 BoogieIcfgContainer [2021-10-06 21:26:14,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:26:14,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:26:14,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:26:14,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:26:14,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:26:13" (1/3) ... [2021-10-06 21:26:14,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a295be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:26:14, skipping insertion in model container [2021-10-06 21:26:14,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:26:13" (2/3) ... [2021-10-06 21:26:14,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a295be6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:26:14, skipping insertion in model container [2021-10-06 21:26:14,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:26:14" (3/3) ... [2021-10-06 21:26:14,682 INFO L111 eAbstractionObserver]: Analyzing ICFG figure1-alt.wvr.c [2021-10-06 21:26:14,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:26:14,696 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-06 21:26:14,699 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:26:14,744 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,745 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,745 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,746 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,746 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,746 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,747 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,747 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,748 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,748 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,748 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,749 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,749 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,749 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,751 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,751 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,751 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,752 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,753 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,753 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,754 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,754 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,755 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,755 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,756 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,756 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,756 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,757 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,760 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,761 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,761 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,764 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,765 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,765 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,766 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,766 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:26:14,774 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-06 21:26:14,834 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:26:14,845 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 21:26:14,845 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-06 21:26:14,862 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:26:14,874 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-06 21:26:14,878 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 86 transitions, 188 flow [2021-10-06 21:26:14,881 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 86 transitions, 188 flow [2021-10-06 21:26:14,977 INFO L129 PetriNetUnfolder]: 6/84 cut-off events. [2021-10-06 21:26:14,977 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-06 21:26:14,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 6/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 77 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-10-06 21:26:14,992 INFO L116 LiptonReduction]: Number of co-enabled transitions 576 [2021-10-06 21:26:22,518 INFO L131 LiptonReduction]: Checked pairs total: 665 [2021-10-06 21:26:22,518 INFO L133 LiptonReduction]: Total number of compositions: 83 [2021-10-06 21:26:22,530 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-06 21:26:22,544 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 21:26:22,546 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 21:26:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:26:22,551 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:22,552 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:26:22,552 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 21:26:22,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:22,558 INFO L82 PathProgramCache]: Analyzing trace with hash 356, now seen corresponding path program 1 times [2021-10-06 21:26:22,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:22,571 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488174060] [2021-10-06 21:26:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:22,572 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:22,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:22,579 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 21:26:22,587 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 21:26:22,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:22,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:26:22,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:22,635 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 21:26:22,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:22,636 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 21:26:22,637 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:22,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488174060] [2021-10-06 21:26:22,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488174060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:22,638 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:22,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:26:22,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205630086] [2021-10-06 21:26:22,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:26:22,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:22,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:26:22,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:26:22,660 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 21:26:22,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:22,675 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-06 21:26:22,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:26:22,677 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 21:26:22,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:22,688 INFO L225 Difference]: With dead ends: 64 [2021-10-06 21:26:22,688 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 21:26:22,689 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 21:26:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 21:26:22,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-06 21:26:22,728 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 21:26:22,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-06 21:26:22,731 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-06 21:26:22,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:22,732 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-06 21:26:22,732 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 21:26:22,732 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-06 21:26:22,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:26:22,733 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:22,733 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:26:22,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:22,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:22,945 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash 348871, now seen corresponding path program 1 times [2021-10-06 21:26:22,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:22,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393789030] [2021-10-06 21:26:22,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:22,949 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:22,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:22,951 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 21:26:22,990 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 21:26:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:23,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:26:23,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:23,262 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:26:23,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:26:23,698 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 21:26:23,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:23,711 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:23,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393789030] [2021-10-06 21:26:23,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393789030] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:23,712 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:23,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:23,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773582633] [2021-10-06 21:26:23,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:23,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:23,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:23,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:23,715 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:23,751 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-06 21:26:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:23,752 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 21:26:23,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:23,754 INFO L225 Difference]: With dead ends: 58 [2021-10-06 21:26:23,754 INFO L226 Difference]: Without dead ends: 58 [2021-10-06 21:26:23,755 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-06 21:26:23,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-06 21:26:23,763 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 21:26:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-06 21:26:23,764 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-06 21:26:23,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:23,765 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-06 21:26:23,765 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 21:26:23,765 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-06 21:26:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:26:23,766 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:23,766 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:26:23,783 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 21:26:23,980 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 21:26:23,982 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:23,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:23,984 INFO L82 PathProgramCache]: Analyzing trace with hash 348872, now seen corresponding path program 1 times [2021-10-06 21:26:23,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:23,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728640615] [2021-10-06 21:26:23,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:23,987 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:23,988 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 21:26:23,994 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 21:26:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:24,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:26:24,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:24,120 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-06 21:26:24,120 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 21:26:24,182 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 21:26:24,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:24,233 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 21:26:24,234 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:24,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728640615] [2021-10-06 21:26:24,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728640615] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:24,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:24,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:24,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342683010] [2021-10-06 21:26:24,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:24,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:24,237 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:24,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:24,261 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-06 21:26:24,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:24,262 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 21:26:24,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:24,263 INFO L225 Difference]: With dead ends: 52 [2021-10-06 21:26:24,264 INFO L226 Difference]: Without dead ends: 52 [2021-10-06 21:26:24,264 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-06 21:26:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-06 21:26:24,270 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 21:26:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-06 21:26:24,271 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-06 21:26:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:24,272 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-06 21:26:24,272 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 21:26:24,272 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-06 21:26:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:26:24,273 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:24,273 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:26:24,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-06 21:26:24,489 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 21:26:24,490 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:24,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:24,490 INFO L82 PathProgramCache]: Analyzing trace with hash 335271830, now seen corresponding path program 1 times [2021-10-06 21:26:24,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:24,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2073394365] [2021-10-06 21:26:24,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:24,492 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:24,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:24,493 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 21:26:24,496 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 21:26:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:24,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:26:24,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:24,631 INFO L354 Elim1Store]: treesize reduction 82, result has 24.8 percent of original size [2021-10-06 21:26:24,632 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 35 treesize of output 51 [2021-10-06 21:26:24,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 71 [2021-10-06 21:26:24,796 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 21:26:24,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:24,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:24,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:24,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2073394365] [2021-10-06 21:26:24,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2073394365] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:24,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:24,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:26:24,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516136223] [2021-10-06 21:26:24,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:26:24,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:24,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:26:24,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:24,891 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:24,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:24,910 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-06 21:26:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:24,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:26:24,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:24,912 INFO L225 Difference]: With dead ends: 43 [2021-10-06 21:26:24,912 INFO L226 Difference]: Without dead ends: 43 [2021-10-06 21:26:24,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:26:24,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-06 21:26:24,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-06 21:26:24,917 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 21:26:24,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-06 21:26:24,918 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-06 21:26:24,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:24,919 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-06 21:26:24,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:24,919 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-06 21:26:24,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:26:24,919 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:24,919 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:26:24,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:25,131 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 21:26:25,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:26:25,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:25,133 INFO L82 PathProgramCache]: Analyzing trace with hash 335271831, now seen corresponding path program 1 times [2021-10-06 21:26:25,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:25,134 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976484388] [2021-10-06 21:26:25,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:25,134 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:25,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:25,135 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 21:26:25,140 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 21:26:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:25,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:26:25,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:25,293 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-06 21:26:25,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-06 21:26:25,549 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 21:26:25,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:25,564 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 21:26:25,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:25,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976484388] [2021-10-06 21:26:25,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976484388] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:25,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:25,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:26:25,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426436797] [2021-10-06 21:26:25,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:26:25,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:26:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:25,567 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 21:26:25,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:25,580 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-06 21:26:25,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:26:25,580 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 21:26:25,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:25,581 INFO L225 Difference]: With dead ends: 34 [2021-10-06 21:26:25,581 INFO L226 Difference]: Without dead ends: 34 [2021-10-06 21:26:25,582 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:26:25,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-06 21:26:25,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-06 21:26:25,585 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 21:26:25,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-06 21:26:25,586 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-06 21:26:25,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:25,586 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-06 21:26:25,586 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 21:26:25,586 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-06 21:26:25,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:25,587 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:25,587 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:25,598 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 21:26:25,793 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 21:26:25,794 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 21:26:25,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:25,795 INFO L82 PathProgramCache]: Analyzing trace with hash 607473206, now seen corresponding path program 1 times [2021-10-06 21:26:25,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:25,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [685530622] [2021-10-06 21:26:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:25,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:25,798 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 21:26:25,799 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 21:26:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:25,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:26,110 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 21:26:26,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:26,415 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 21:26:26,415 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:26,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [685530622] [2021-10-06 21:26:26,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [685530622] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:26,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:26,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 21:26:26,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420448664] [2021-10-06 21:26:26,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:26,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:26,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:26,421 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:26,674 INFO L93 Difference]: Finished difference Result 72 states and 135 transitions. [2021-10-06 21:26:26,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:26:26,675 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:26:26,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:26,676 INFO L225 Difference]: With dead ends: 72 [2021-10-06 21:26:26,677 INFO L226 Difference]: Without dead ends: 62 [2021-10-06 21:26:26,677 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 275.7ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:26,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-06 21:26:26,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2021-10-06 21:26:26,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.1320754716981134) internal successors, (113), 53 states have internal predecessors, (113), 0 states have call successors, (0), 0 states 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 21:26:26,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 113 transitions. [2021-10-06 21:26:26,684 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 113 transitions. Word has length 13 [2021-10-06 21:26:26,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:26,684 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 113 transitions. [2021-10-06 21:26:26,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:26,685 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 113 transitions. [2021-10-06 21:26:26,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:26,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:26,686 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:26,698 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 21:26:26,900 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 21:26:26,901 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 21:26:26,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:26,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1166739082, now seen corresponding path program 2 times [2021-10-06 21:26:26,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:26,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668433197] [2021-10-06 21:26:26,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:26,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:26,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:26,903 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 21:26:26,906 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 21:26:26,989 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:26,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:26,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:26,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:27,237 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 21:26:27,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:27,570 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 21:26:27,571 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:27,571 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668433197] [2021-10-06 21:26:27,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668433197] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:27,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:27,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 21:26:27,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400772543] [2021-10-06 21:26:27,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:27,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:27,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:27,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:27,573 INFO L87 Difference]: Start difference. First operand 54 states and 113 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:27,866 INFO L93 Difference]: Finished difference Result 100 states and 185 transitions. [2021-10-06 21:26:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:27,867 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:26:27,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:27,868 INFO L225 Difference]: With dead ends: 100 [2021-10-06 21:26:27,868 INFO L226 Difference]: Without dead ends: 86 [2021-10-06 21:26:27,869 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 346.5ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:27,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-06 21:26:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 62. [2021-10-06 21:26:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.19672131147541) internal successors, (134), 61 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 21:26:27,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 134 transitions. [2021-10-06 21:26:27,876 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 134 transitions. Word has length 13 [2021-10-06 21:26:27,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:27,876 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 134 transitions. [2021-10-06 21:26:27,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:27,877 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 134 transitions. [2021-10-06 21:26:27,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:27,878 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:27,878 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:27,892 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-06 21:26:28,090 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 21:26:28,091 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 21:26:28,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:28,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1103140102, now seen corresponding path program 3 times [2021-10-06 21:26:28,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:28,093 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [712999529] [2021-10-06 21:26:28,093 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:28,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:28,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:28,094 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 21:26:28,095 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 21:26:28,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-06 21:26:28,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:28,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:28,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:28,452 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 21:26:28,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:28,784 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 21:26:28,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:28,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [712999529] [2021-10-06 21:26:28,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [712999529] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:28,797 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:28,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 21:26:28,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870065549] [2021-10-06 21:26:28,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:28,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:28,801 INFO L87 Difference]: Start difference. First operand 62 states and 134 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:29,121 INFO L93 Difference]: Finished difference Result 84 states and 162 transitions. [2021-10-06 21:26:29,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:26:29,122 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:26:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:29,123 INFO L225 Difference]: With dead ends: 84 [2021-10-06 21:26:29,123 INFO L226 Difference]: Without dead ends: 74 [2021-10-06 21:26:29,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 346.4ms TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:29,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-06 21:26:29,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2021-10-06 21:26:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.19672131147541) internal successors, (134), 61 states have internal predecessors, (134), 0 states have call successors, (0), 0 states 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 21:26:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 134 transitions. [2021-10-06 21:26:29,131 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 134 transitions. Word has length 13 [2021-10-06 21:26:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:29,131 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 134 transitions. [2021-10-06 21:26:29,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:29,132 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 134 transitions. [2021-10-06 21:26:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:29,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:29,133 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:29,149 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 21:26:29,345 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 21:26:29,346 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 21:26:29,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:29,347 INFO L82 PathProgramCache]: Analyzing trace with hash -274564376, now seen corresponding path program 4 times [2021-10-06 21:26:29,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:29,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525451760] [2021-10-06 21:26:29,348 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:29,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:29,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:29,350 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 21:26:29,385 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 21:26:29,448 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:29,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:29,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:29,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:29,721 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 21:26:29,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:30,050 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 21:26:30,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:30,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525451760] [2021-10-06 21:26:30,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525451760] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:30,051 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:30,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 21:26:30,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059725410] [2021-10-06 21:26:30,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:30,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:30,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:30,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:30,053 INFO L87 Difference]: Start difference. First operand 62 states and 134 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:30,473 INFO L93 Difference]: Finished difference Result 124 states and 232 transitions. [2021-10-06 21:26:30,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:30,474 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:26:30,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:30,476 INFO L225 Difference]: With dead ends: 124 [2021-10-06 21:26:30,476 INFO L226 Difference]: Without dead ends: 110 [2021-10-06 21:26:30,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 407.9ms TimeCoverageRelationStatistics Valid=105, Invalid=167, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:26:30,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-06 21:26:30,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 68. [2021-10-06 21:26:30,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.298507462686567) internal successors, (154), 67 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 21:26:30,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 154 transitions. [2021-10-06 21:26:30,493 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 154 transitions. Word has length 13 [2021-10-06 21:26:30,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:30,493 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 154 transitions. [2021-10-06 21:26:30,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:30,494 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 154 transitions. [2021-10-06 21:26:30,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:30,495 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:30,495 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:30,507 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 21:26:30,696 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 21:26:30,697 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 21:26:30,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:30,698 INFO L82 PathProgramCache]: Analyzing trace with hash -210965396, now seen corresponding path program 5 times [2021-10-06 21:26:30,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:30,699 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299534987] [2021-10-06 21:26:30,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:30,699 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:30,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:30,700 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 21:26:30,706 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 21:26:30,819 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:26:30,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:30,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:30,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:31,077 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 21:26:31,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:31,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:31,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:31,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299534987] [2021-10-06 21:26:31,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299534987] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:31,372 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:31,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 21:26:31,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218226023] [2021-10-06 21:26:31,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:31,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:31,373 INFO L87 Difference]: Start difference. First operand 68 states and 154 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:31,672 INFO L93 Difference]: Finished difference Result 108 states and 209 transitions. [2021-10-06 21:26:31,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:31,673 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:26:31,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:31,674 INFO L225 Difference]: With dead ends: 108 [2021-10-06 21:26:31,674 INFO L226 Difference]: Without dead ends: 98 [2021-10-06 21:26:31,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 353.1ms TimeCoverageRelationStatistics Valid=107, Invalid=165, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:26:31,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-06 21:26:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 64. [2021-10-06 21:26:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 2.2222222222222223) internal successors, (140), 63 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 21:26:31,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 140 transitions. [2021-10-06 21:26:31,679 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 140 transitions. Word has length 13 [2021-10-06 21:26:31,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:31,680 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 140 transitions. [2021-10-06 21:26:31,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:31,680 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 140 transitions. [2021-10-06 21:26:31,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-06 21:26:31,681 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:31,681 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:31,693 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 21:26:31,891 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 21:26:31,892 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 21:26:31,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:31,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1797411414, now seen corresponding path program 6 times [2021-10-06 21:26:31,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:31,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107077060] [2021-10-06 21:26:31,894 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:31,894 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:31,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:31,896 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 21:26:31,896 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 21:26:32,000 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-06 21:26:32,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:32,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-06 21:26:32,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:32,251 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 21:26:32,251 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:32,559 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 21:26:32,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:32,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107077060] [2021-10-06 21:26:32,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107077060] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:26:32,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:26:32,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-06 21:26:32,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797552218] [2021-10-06 21:26:32,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:26:32,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:26:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:26:32,561 INFO L87 Difference]: Start difference. First operand 64 states and 140 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:32,862 INFO L93 Difference]: Finished difference Result 84 states and 168 transitions. [2021-10-06 21:26:32,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:32,863 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-06 21:26:32,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:32,864 INFO L225 Difference]: With dead ends: 84 [2021-10-06 21:26:32,864 INFO L226 Difference]: Without dead ends: 64 [2021-10-06 21:26:32,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 320.1ms TimeCoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2021-10-06 21:26:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-06 21:26:32,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2021-10-06 21:26:32,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.1864406779661016) internal successors, (129), 59 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 129 transitions. [2021-10-06 21:26:32,870 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 129 transitions. Word has length 13 [2021-10-06 21:26:32,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:32,870 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 129 transitions. [2021-10-06 21:26:32,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:32,871 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 129 transitions. [2021-10-06 21:26:32,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:32,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:32,872 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:32,886 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 21:26:33,077 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 21:26:33,078 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 21:26:33,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:33,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1794415850, now seen corresponding path program 1 times [2021-10-06 21:26:33,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:33,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280236294] [2021-10-06 21:26:33,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:33,080 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:33,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:33,082 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 21:26:33,083 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 21:26:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:33,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:33,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:33,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:34,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:34,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:34,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280236294] [2021-10-06 21:26:34,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280236294] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:34,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:34,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:34,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252903954] [2021-10-06 21:26:34,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:34,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:34,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:34,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:34,314 INFO L87 Difference]: Start difference. First operand 60 states and 129 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:35,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:35,313 INFO L93 Difference]: Finished difference Result 97 states and 183 transitions. [2021-10-06 21:26:35,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-06 21:26:35,314 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 21:26:35,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:35,315 INFO L225 Difference]: With dead ends: 97 [2021-10-06 21:26:35,315 INFO L226 Difference]: Without dead ends: 82 [2021-10-06 21:26:35,316 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1185.6ms TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:26:35,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-06 21:26:35,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2021-10-06 21:26:35,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 2.1044776119402986) internal successors, (141), 67 states have internal predecessors, (141), 0 states have call successors, (0), 0 states 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 21:26:35,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 141 transitions. [2021-10-06 21:26:35,322 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 141 transitions. Word has length 15 [2021-10-06 21:26:35,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:35,322 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 141 transitions. [2021-10-06 21:26:35,323 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 21:26:35,326 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 141 transitions. [2021-10-06 21:26:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:35,327 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:35,328 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:35,340 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 21:26:35,533 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 21:26:35,533 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 21:26:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:35,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1681684630, now seen corresponding path program 2 times [2021-10-06 21:26:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:35,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695554529] [2021-10-06 21:26:35,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:26:35,536 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:35,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:35,537 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 21:26:35,540 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 21:26:35,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:35,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:35,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:35,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:36,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:36,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:36,758 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:36,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695554529] [2021-10-06 21:26:36,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695554529] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:36,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:36,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:36,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897920023] [2021-10-06 21:26:36,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:36,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:36,762 INFO L87 Difference]: Start difference. First operand 68 states and 141 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 21:26:39,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:39,926 INFO L93 Difference]: Finished difference Result 214 states and 401 transitions. [2021-10-06 21:26:39,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:26:39,926 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 21:26:39,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:39,929 INFO L225 Difference]: With dead ends: 214 [2021-10-06 21:26:39,929 INFO L226 Difference]: Without dead ends: 185 [2021-10-06 21:26:39,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3175.9ms TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:26:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-10-06 21:26:39,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 94. [2021-10-06 21:26:39,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.3333333333333335) internal successors, (217), 93 states have internal predecessors, (217), 0 states have call successors, (0), 0 states 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 21:26:39,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 217 transitions. [2021-10-06 21:26:39,936 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 217 transitions. Word has length 15 [2021-10-06 21:26:39,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:39,937 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 217 transitions. [2021-10-06 21:26:39,937 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 21:26:39,937 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 217 transitions. [2021-10-06 21:26:39,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:39,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:39,938 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:39,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:40,151 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 21:26:40,151 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 21:26:40,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:40,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1745283610, now seen corresponding path program 3 times [2021-10-06 21:26:40,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:40,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [393388028] [2021-10-06 21:26:40,153 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:26:40,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:40,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:40,155 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 21:26:40,156 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 21:26:40,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:26:40,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:40,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:40,664 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:40,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:41,322 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:41,323 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:41,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [393388028] [2021-10-06 21:26:41,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [393388028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:41,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:41,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:41,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236720028] [2021-10-06 21:26:41,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:41,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:41,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:41,325 INFO L87 Difference]: Start difference. First operand 94 states and 217 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 21:26:44,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:44,124 INFO L93 Difference]: Finished difference Result 209 states and 389 transitions. [2021-10-06 21:26:44,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:26:44,126 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 21:26:44,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:44,127 INFO L225 Difference]: With dead ends: 209 [2021-10-06 21:26:44,127 INFO L226 Difference]: Without dead ends: 184 [2021-10-06 21:26:44,128 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 2714.1ms TimeCoverageRelationStatistics Valid=316, Invalid=944, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:26:44,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-06 21:26:44,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 92. [2021-10-06 21:26:44,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.2857142857142856) internal successors, (208), 91 states have internal predecessors, (208), 0 states have call successors, (0), 0 states 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 21:26:44,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 208 transitions. [2021-10-06 21:26:44,134 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 208 transitions. Word has length 15 [2021-10-06 21:26:44,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:44,134 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 208 transitions. [2021-10-06 21:26:44,134 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 21:26:44,135 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 208 transitions. [2021-10-06 21:26:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:44,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:44,136 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:44,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-10-06 21:26:44,345 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 21:26:44,346 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 21:26:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash -257061112, now seen corresponding path program 1 times [2021-10-06 21:26:44,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:44,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2041467544] [2021-10-06 21:26:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:26:44,348 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:44,350 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 21:26:44,352 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 21:26:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:44,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:44,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:44,855 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 21:26:44,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:45,475 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 21:26:45,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:45,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2041467544] [2021-10-06 21:26:45,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2041467544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:45,476 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:45,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:45,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640147192] [2021-10-06 21:26:45,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:45,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:45,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:45,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:45,478 INFO L87 Difference]: Start difference. First operand 92 states and 208 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 21:26:47,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:47,647 INFO L93 Difference]: Finished difference Result 184 states and 381 transitions. [2021-10-06 21:26:47,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-06 21:26:47,648 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 21:26:47,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:47,653 INFO L225 Difference]: With dead ends: 184 [2021-10-06 21:26:47,653 INFO L226 Difference]: Without dead ends: 166 [2021-10-06 21:26:47,655 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2128.7ms TimeCoverageRelationStatistics Valid=262, Invalid=794, Unknown=0, NotChecked=0, Total=1056 [2021-10-06 21:26:47,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-10-06 21:26:47,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 88. [2021-10-06 21:26:47,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.413793103448276) internal successors, (210), 87 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 21:26:47,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 210 transitions. [2021-10-06 21:26:47,664 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 210 transitions. Word has length 15 [2021-10-06 21:26:47,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:47,664 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 210 transitions. [2021-10-06 21:26:47,664 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 21:26:47,665 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 210 transitions. [2021-10-06 21:26:47,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:47,665 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:47,665 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:47,680 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 21:26:47,878 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 21:26:47,879 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 21:26:47,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:47,880 INFO L82 PathProgramCache]: Analyzing trace with hash -1687241280, now seen corresponding path program 4 times [2021-10-06 21:26:47,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:47,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760615244] [2021-10-06 21:26:47,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:26:47,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:47,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:47,882 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 21:26:47,883 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 21:26:48,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:26:48,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:48,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:48,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:48,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:49,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:49,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:49,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760615244] [2021-10-06 21:26:49,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760615244] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:49,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:49,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:49,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898255756] [2021-10-06 21:26:49,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:49,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:49,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:49,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:49,056 INFO L87 Difference]: Start difference. First operand 88 states and 210 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 21:26:50,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:50,711 INFO L93 Difference]: Finished difference Result 167 states and 336 transitions. [2021-10-06 21:26:50,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:26:50,712 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 21:26:50,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:50,714 INFO L225 Difference]: With dead ends: 167 [2021-10-06 21:26:50,714 INFO L226 Difference]: Without dead ends: 152 [2021-10-06 21:26:50,715 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1736.1ms TimeCoverageRelationStatistics Valid=178, Invalid=578, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:26:50,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-06 21:26:50,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 88. [2021-10-06 21:26:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.413793103448276) internal successors, (210), 87 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 21:26:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 210 transitions. [2021-10-06 21:26:50,720 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 210 transitions. Word has length 15 [2021-10-06 21:26:50,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:50,721 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 210 transitions. [2021-10-06 21:26:50,721 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 21:26:50,721 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 210 transitions. [2021-10-06 21:26:50,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:50,722 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:50,722 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:50,738 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 21:26:50,934 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 21:26:50,934 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 21:26:50,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:50,935 INFO L82 PathProgramCache]: Analyzing trace with hash -721330470, now seen corresponding path program 5 times [2021-10-06 21:26:50,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:50,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461806898] [2021-10-06 21:26:50,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:50,936 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:50,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:50,937 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 21:26:50,938 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 21:26:51,145 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:26:51,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:51,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:51,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:51,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:51,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:52,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:52,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:52,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461806898] [2021-10-06 21:26:52,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461806898] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:52,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:52,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:52,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626819518] [2021-10-06 21:26:52,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:52,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:52,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:52,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:52,088 INFO L87 Difference]: Start difference. First operand 88 states and 210 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 21:26:53,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:53,078 INFO L93 Difference]: Finished difference Result 137 states and 283 transitions. [2021-10-06 21:26:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-06 21:26:53,079 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 21:26:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:53,080 INFO L225 Difference]: With dead ends: 137 [2021-10-06 21:26:53,080 INFO L226 Difference]: Without dead ends: 122 [2021-10-06 21:26:53,081 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1158.0ms TimeCoverageRelationStatistics Valid=132, Invalid=374, Unknown=0, NotChecked=0, Total=506 [2021-10-06 21:26:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-06 21:26:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2021-10-06 21:26:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.413793103448276) internal successors, (210), 87 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 21:26:53,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 210 transitions. [2021-10-06 21:26:53,085 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 210 transitions. Word has length 15 [2021-10-06 21:26:53,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:53,086 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 210 transitions. [2021-10-06 21:26:53,086 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 21:26:53,086 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 210 transitions. [2021-10-06 21:26:53,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:53,086 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:53,087 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:53,098 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 21:26:53,295 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 21:26:53,296 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 21:26:53,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:53,297 INFO L82 PathProgramCache]: Analyzing trace with hash 68117896, now seen corresponding path program 6 times [2021-10-06 21:26:53,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:53,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775567710] [2021-10-06 21:26:53,298 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:26:53,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:53,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:53,300 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 21:26:53,302 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 21:26:53,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:26:53,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:53,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:53,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:53,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:53,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:54,552 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:54,552 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:54,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775567710] [2021-10-06 21:26:54,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775567710] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:54,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:54,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:54,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45509626] [2021-10-06 21:26:54,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:54,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:54,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:54,555 INFO L87 Difference]: Start difference. First operand 88 states and 210 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 21:26:57,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:57,329 INFO L93 Difference]: Finished difference Result 234 states and 477 transitions. [2021-10-06 21:26:57,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:26:57,330 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 21:26:57,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:57,331 INFO L225 Difference]: With dead ends: 234 [2021-10-06 21:26:57,331 INFO L226 Difference]: Without dead ends: 210 [2021-10-06 21:26:57,332 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 2721.8ms TimeCoverageRelationStatistics Valid=252, Invalid=678, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:26:57,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-06 21:26:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 112. [2021-10-06 21:26:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.630630630630631) internal successors, (292), 111 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:57,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 292 transitions. [2021-10-06 21:26:57,337 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 292 transitions. Word has length 15 [2021-10-06 21:26:57,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:57,338 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 292 transitions. [2021-10-06 21:26:57,338 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 21:26:57,338 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 292 transitions. [2021-10-06 21:26:57,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:26:57,339 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:57,339 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:57,352 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 21:26:57,545 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 21:26:57,545 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 21:26:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash 131716876, now seen corresponding path program 7 times [2021-10-06 21:26:57,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:57,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161805639] [2021-10-06 21:26:57,548 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:26:57,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:57,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:57,549 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 21:26:57,560 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 21:26:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:26:57,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:26:57,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:58,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:58,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:58,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:26:58,786 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:58,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161805639] [2021-10-06 21:26:58,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161805639] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:58,787 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:58,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:26:58,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793162317] [2021-10-06 21:26:58,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:26:58,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:58,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:26:58,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:26:58,788 INFO L87 Difference]: Start difference. First operand 112 states and 292 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:01,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:01,433 INFO L93 Difference]: Finished difference Result 234 states and 474 transitions. [2021-10-06 21:27:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:27:01,434 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 21:27:01,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:01,436 INFO L225 Difference]: With dead ends: 234 [2021-10-06 21:27:01,436 INFO L226 Difference]: Without dead ends: 214 [2021-10-06 21:27:01,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2620.3ms TimeCoverageRelationStatistics Valid=304, Invalid=818, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:27:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-10-06 21:27:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 106. [2021-10-06 21:27:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.5238095238095237) internal successors, (265), 105 states have internal predecessors, (265), 0 states have call successors, (0), 0 states 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 21:27:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 265 transitions. [2021-10-06 21:27:01,442 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 265 transitions. Word has length 15 [2021-10-06 21:27:01,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:01,442 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 265 transitions. [2021-10-06 21:27:01,442 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 21:27:01,442 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 265 transitions. [2021-10-06 21:27:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:01,443 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:01,443 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:01,455 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 21:27:01,653 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 21:27:01,654 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 21:27:01,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:01,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1870627846, now seen corresponding path program 2 times [2021-10-06 21:27:01,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:01,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760241586] [2021-10-06 21:27:01,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:01,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:01,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:01,657 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 21:27:01,664 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 21:27:01,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:01,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:01,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:01,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:02,224 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 21:27:02,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:02,829 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 21:27:02,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:02,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760241586] [2021-10-06 21:27:02,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760241586] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:02,830 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:02,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:02,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577924455] [2021-10-06 21:27:02,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:02,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:02,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:02,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:02,831 INFO L87 Difference]: Start difference. First operand 106 states and 265 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 21:27:05,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:05,169 INFO L93 Difference]: Finished difference Result 230 states and 492 transitions. [2021-10-06 21:27:05,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:27:05,170 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 21:27:05,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:05,172 INFO L225 Difference]: With dead ends: 230 [2021-10-06 21:27:05,172 INFO L226 Difference]: Without dead ends: 212 [2021-10-06 21:27:05,173 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 2237.2ms TimeCoverageRelationStatistics Valid=299, Invalid=891, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:27:05,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-10-06 21:27:05,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 106. [2021-10-06 21:27:05,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.6476190476190475) internal successors, (278), 105 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 21:27:05,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 278 transitions. [2021-10-06 21:27:05,179 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 278 transitions. Word has length 15 [2021-10-06 21:27:05,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:05,179 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 278 transitions. [2021-10-06 21:27:05,179 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 21:27:05,179 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 278 transitions. [2021-10-06 21:27:05,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:05,180 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:05,180 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:05,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:05,380 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 21:27:05,381 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 21:27:05,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:05,382 INFO L82 PathProgramCache]: Analyzing trace with hash 994159282, now seen corresponding path program 8 times [2021-10-06 21:27:05,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:05,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710452048] [2021-10-06 21:27:05,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:05,383 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:05,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:05,385 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 21:27:05,386 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 21:27:05,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:05,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:05,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:05,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:05,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:06,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:06,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:06,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710452048] [2021-10-06 21:27:06,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710452048] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:06,626 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:06,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:06,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377491611] [2021-10-06 21:27:06,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:06,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:06,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:06,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:06,628 INFO L87 Difference]: Start difference. First operand 106 states and 278 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 21:27:08,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:08,666 INFO L93 Difference]: Finished difference Result 175 states and 389 transitions. [2021-10-06 21:27:08,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-06 21:27:08,669 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 21:27:08,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:08,670 INFO L225 Difference]: With dead ends: 175 [2021-10-06 21:27:08,670 INFO L226 Difference]: Without dead ends: 160 [2021-10-06 21:27:08,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 2048.6ms TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:27:08,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-06 21:27:08,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 98. [2021-10-06 21:27:08,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.515463917525773) internal successors, (244), 97 states have internal predecessors, (244), 0 states have call successors, (0), 0 states 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 21:27:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 244 transitions. [2021-10-06 21:27:08,675 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 244 transitions. Word has length 15 [2021-10-06 21:27:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:08,675 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 244 transitions. [2021-10-06 21:27:08,675 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 21:27:08,676 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 244 transitions. [2021-10-06 21:27:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:08,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:08,676 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:08,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:08,889 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 21:27:08,889 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 21:27:08,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:08,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1960070092, now seen corresponding path program 9 times [2021-10-06 21:27:08,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:08,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2114164705] [2021-10-06 21:27:08,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:08,891 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:08,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:08,892 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 21:27:08,893 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 21:27:09,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:09,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:09,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:09,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:09,466 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:09,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:10,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:10,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:10,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2114164705] [2021-10-06 21:27:10,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2114164705] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:10,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:10,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:10,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980655170] [2021-10-06 21:27:10,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:10,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:10,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:10,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:10,171 INFO L87 Difference]: Start difference. First operand 98 states and 244 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 21:27:11,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:11,251 INFO L93 Difference]: Finished difference Result 153 states and 332 transitions. [2021-10-06 21:27:11,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-06 21:27:11,252 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 21:27:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:11,253 INFO L225 Difference]: With dead ends: 153 [2021-10-06 21:27:11,253 INFO L226 Difference]: Without dead ends: 138 [2021-10-06 21:27:11,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1216.8ms TimeCoverageRelationStatistics Valid=154, Invalid=398, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:27:11,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-06 21:27:11,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 98. [2021-10-06 21:27:11,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.4948453608247423) internal successors, (242), 97 states have internal predecessors, (242), 0 states have call successors, (0), 0 states 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 21:27:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 242 transitions. [2021-10-06 21:27:11,259 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 242 transitions. Word has length 15 [2021-10-06 21:27:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:11,259 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 242 transitions. [2021-10-06 21:27:11,259 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 21:27:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 242 transitions. [2021-10-06 21:27:11,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:11,260 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:11,260 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:11,275 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 21:27:11,473 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 21:27:11,473 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 21:27:11,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:11,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1004180588, now seen corresponding path program 10 times [2021-10-06 21:27:11,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:11,475 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21651009] [2021-10-06 21:27:11,475 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:11,475 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:11,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:11,476 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 21:27:11,477 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 21:27:11,769 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:11,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:11,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:11,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:12,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:12,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:12,700 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:12,700 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21651009] [2021-10-06 21:27:12,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21651009] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:12,700 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:12,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:12,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019272917] [2021-10-06 21:27:12,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:12,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:12,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:12,701 INFO L87 Difference]: Start difference. First operand 98 states and 242 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 21:27:15,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:15,676 INFO L93 Difference]: Finished difference Result 256 states and 536 transitions. [2021-10-06 21:27:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-06 21:27:15,677 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-06 21:27:15,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:15,681 INFO L225 Difference]: With dead ends: 256 [2021-10-06 21:27:15,681 INFO L226 Difference]: Without dead ends: 232 [2021-10-06 21:27:15,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 2938.6ms TimeCoverageRelationStatistics Valid=329, Invalid=1003, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:27:15,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-06 21:27:15,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 120. [2021-10-06 21:27:15,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 2.6218487394957983) internal successors, (312), 119 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 21:27:15,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 312 transitions. [2021-10-06 21:27:15,688 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 312 transitions. Word has length 15 [2021-10-06 21:27:15,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:15,689 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 312 transitions. [2021-10-06 21:27:15,689 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 21:27:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 312 transitions. [2021-10-06 21:27:15,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:15,690 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:15,690 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:15,705 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 21:27:15,903 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 21:27:15,903 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 21:27:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:15,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1067779568, now seen corresponding path program 11 times [2021-10-06 21:27:15,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:15,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579326455] [2021-10-06 21:27:15,906 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:15,906 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:15,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:15,907 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 21:27:15,910 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 21:27:16,185 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:16,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:16,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:16,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:17,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:17,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579326455] [2021-10-06 21:27:17,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579326455] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:17,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:17,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:17,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320553070] [2021-10-06 21:27:17,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:17,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:17,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:17,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:17,091 INFO L87 Difference]: Start difference. First operand 120 states and 312 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 21:27:20,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:20,010 INFO L93 Difference]: Finished difference Result 240 states and 509 transitions. [2021-10-06 21:27:20,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:27:20,011 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 21:27:20,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:20,012 INFO L225 Difference]: With dead ends: 240 [2021-10-06 21:27:20,013 INFO L226 Difference]: Without dead ends: 220 [2021-10-06 21:27:20,013 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 2891.3ms TimeCoverageRelationStatistics Valid=380, Invalid=1180, Unknown=0, NotChecked=0, Total=1560 [2021-10-06 21:27:20,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-10-06 21:27:20,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 114. [2021-10-06 21:27:20,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 113 states have (on average 2.52212389380531) internal successors, (285), 113 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 21:27:20,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 285 transitions. [2021-10-06 21:27:20,019 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 285 transitions. Word has length 15 [2021-10-06 21:27:20,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:20,019 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 285 transitions. [2021-10-06 21:27:20,019 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 21:27:20,020 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 285 transitions. [2021-10-06 21:27:20,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:20,020 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:20,020 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:20,036 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:20,233 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 21:27:20,234 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 21:27:20,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:20,235 INFO L82 PathProgramCache]: Analyzing trace with hash -934565154, now seen corresponding path program 3 times [2021-10-06 21:27:20,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:20,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976472972] [2021-10-06 21:27:20,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:20,236 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:20,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:20,237 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 21:27:20,238 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 21:27:20,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:20,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:20,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:20,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:20,841 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 21:27:20,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:21,387 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 21:27:21,388 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:21,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976472972] [2021-10-06 21:27:21,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976472972] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:21,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:21,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:21,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276371187] [2021-10-06 21:27:21,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:21,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:21,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:21,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:21,390 INFO L87 Difference]: Start difference. First operand 114 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 21:27:23,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:23,639 INFO L93 Difference]: Finished difference Result 306 states and 631 transitions. [2021-10-06 21:27:23,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:27:23,640 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 21:27:23,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:23,642 INFO L225 Difference]: With dead ends: 306 [2021-10-06 21:27:23,642 INFO L226 Difference]: Without dead ends: 288 [2021-10-06 21:27:23,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 2119.2ms TimeCoverageRelationStatistics Valid=310, Invalid=1096, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:27:23,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2021-10-06 21:27:23,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 118. [2021-10-06 21:27:23,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.5128205128205128) internal successors, (294), 117 states have internal predecessors, (294), 0 states have call successors, (0), 0 states 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 21:27:23,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 294 transitions. [2021-10-06 21:27:23,650 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 294 transitions. Word has length 15 [2021-10-06 21:27:23,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:23,650 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 294 transitions. [2021-10-06 21:27:23,650 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 21:27:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 294 transitions. [2021-10-06 21:27:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:23,651 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:23,651 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:23,671 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-10-06 21:27:23,865 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 21:27:23,866 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 21:27:23,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:23,866 INFO L82 PathProgramCache]: Analyzing trace with hash 1930221974, now seen corresponding path program 12 times [2021-10-06 21:27:23,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:23,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1916977680] [2021-10-06 21:27:23,867 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:23,867 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:23,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:23,868 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 21:27:23,873 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 21:27:24,237 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:27:24,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:24,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:24,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:24,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:25,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:25,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:25,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1916977680] [2021-10-06 21:27:25,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1916977680] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:25,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:25,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:25,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529282087] [2021-10-06 21:27:25,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:25,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:25,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:25,132 INFO L87 Difference]: Start difference. First operand 118 states and 294 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 21:27:26,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:26,868 INFO L93 Difference]: Finished difference Result 188 states and 418 transitions. [2021-10-06 21:27:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:27:26,869 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 21:27:26,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:26,870 INFO L225 Difference]: With dead ends: 188 [2021-10-06 21:27:26,870 INFO L226 Difference]: Without dead ends: 178 [2021-10-06 21:27:26,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1753.4ms TimeCoverageRelationStatistics Valid=244, Invalid=748, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:27:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-06 21:27:26,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 116. [2021-10-06 21:27:26,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.5304347826086957) internal successors, (291), 115 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 21:27:26,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 291 transitions. [2021-10-06 21:27:26,876 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 291 transitions. Word has length 15 [2021-10-06 21:27:26,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:26,876 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 291 transitions. [2021-10-06 21:27:26,876 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 21:27:26,877 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 291 transitions. [2021-10-06 21:27:26,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:26,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:26,877 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:26,892 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 21:27:27,089 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 21:27:27,090 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 21:27:27,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:27,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1875117816, now seen corresponding path program 13 times [2021-10-06 21:27:27,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:27,091 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997924567] [2021-10-06 21:27:27,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:27:27,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:27,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:27,093 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 21:27:27,096 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 21:27:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:27:27,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:27,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:27,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:27,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:28,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:28,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997924567] [2021-10-06 21:27:28,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997924567] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:28,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:28,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:28,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872995818] [2021-10-06 21:27:28,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:28,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:28,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:28,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:28,272 INFO L87 Difference]: Start difference. First operand 116 states and 291 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 21:27:30,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:30,550 INFO L93 Difference]: Finished difference Result 327 states and 701 transitions. [2021-10-06 21:27:30,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:27:30,551 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 21:27:30,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:30,553 INFO L225 Difference]: With dead ends: 327 [2021-10-06 21:27:30,553 INFO L226 Difference]: Without dead ends: 312 [2021-10-06 21:27:30,554 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2238.8ms TimeCoverageRelationStatistics Valid=345, Invalid=987, Unknown=0, NotChecked=0, Total=1332 [2021-10-06 21:27:30,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-10-06 21:27:30,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 124. [2021-10-06 21:27:30,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 2.6341463414634148) internal successors, (324), 123 states have internal predecessors, (324), 0 states have call successors, (0), 0 states 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 21:27:30,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 324 transitions. [2021-10-06 21:27:30,560 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 324 transitions. Word has length 15 [2021-10-06 21:27:30,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:30,560 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 324 transitions. [2021-10-06 21:27:30,561 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 21:27:30,561 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 324 transitions. [2021-10-06 21:27:30,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:30,561 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:30,562 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:30,577 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 21:27:30,775 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 21:27:30,775 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 21:27:30,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:30,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1811518836, now seen corresponding path program 14 times [2021-10-06 21:27:30,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:30,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1641753691] [2021-10-06 21:27:30,777 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:27:30,777 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:30,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:30,779 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 21:27:30,781 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 21:27:31,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:27:31,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:31,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:31,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:31,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:31,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:32,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:32,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1641753691] [2021-10-06 21:27:32,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1641753691] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:32,121 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:32,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:32,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685955115] [2021-10-06 21:27:32,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:32,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:32,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:32,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:32,123 INFO L87 Difference]: Start difference. First operand 124 states and 324 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 21:27:34,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:34,482 INFO L93 Difference]: Finished difference Result 305 states and 663 transitions. [2021-10-06 21:27:34,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-06 21:27:34,482 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 21:27:34,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:34,484 INFO L225 Difference]: With dead ends: 305 [2021-10-06 21:27:34,484 INFO L226 Difference]: Without dead ends: 290 [2021-10-06 21:27:34,485 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2390.4ms TimeCoverageRelationStatistics Valid=395, Invalid=1087, Unknown=0, NotChecked=0, Total=1482 [2021-10-06 21:27:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-06 21:27:34,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 118. [2021-10-06 21:27:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 117 states have (on average 2.572649572649573) internal successors, (301), 117 states have internal predecessors, (301), 0 states have call successors, (0), 0 states 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 21:27:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 301 transitions. [2021-10-06 21:27:34,492 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 301 transitions. Word has length 15 [2021-10-06 21:27:34,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:34,492 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 301 transitions. [2021-10-06 21:27:34,492 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 21:27:34,492 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 301 transitions. [2021-10-06 21:27:34,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:34,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:34,493 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:34,511 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 21:27:34,711 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 21:27:34,711 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 21:27:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:34,712 INFO L82 PathProgramCache]: Analyzing trace with hash 196857974, now seen corresponding path program 15 times [2021-10-06 21:27:34,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:34,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694985265] [2021-10-06 21:27:34,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:27:34,713 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:34,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:34,714 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 21:27:34,715 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 21:27:35,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-06 21:27:35,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:35,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:35,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:35,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:35,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:35,916 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:27:35,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:35,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694985265] [2021-10-06 21:27:35,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694985265] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:35,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:35,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:35,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930535872] [2021-10-06 21:27:35,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:35,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:35,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:35,919 INFO L87 Difference]: Start difference. First operand 118 states and 301 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 21:27:38,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:38,184 INFO L93 Difference]: Finished difference Result 261 states and 577 transitions. [2021-10-06 21:27:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-06 21:27:38,184 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 21:27:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:38,186 INFO L225 Difference]: With dead ends: 261 [2021-10-06 21:27:38,186 INFO L226 Difference]: Without dead ends: 246 [2021-10-06 21:27:38,189 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2281.9ms TimeCoverageRelationStatistics Valid=248, Invalid=744, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:27:38,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2021-10-06 21:27:38,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 130. [2021-10-06 21:27:38,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.4728682170542635) internal successors, (319), 129 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 21:27:38,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 319 transitions. [2021-10-06 21:27:38,195 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 319 transitions. Word has length 15 [2021-10-06 21:27:38,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:38,195 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 319 transitions. [2021-10-06 21:27:38,195 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 21:27:38,195 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 319 transitions. [2021-10-06 21:27:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-06 21:27:38,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:38,196 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:38,212 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 21:27:38,409 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 21:27:38,410 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 21:27:38,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:38,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1127825104, now seen corresponding path program 4 times [2021-10-06 21:27:38,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:38,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803570731] [2021-10-06 21:27:38,412 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:27:38,412 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:38,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:38,413 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 21:27:38,415 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 21:27:38,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:27:38,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:27:38,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:39,051 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 21:27:39,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:39,545 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 21:27:39,546 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:39,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803570731] [2021-10-06 21:27:39,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803570731] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:39,546 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:39,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-06 21:27:39,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673156749] [2021-10-06 21:27:39,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:27:39,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:39,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:27:39,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:27:39,548 INFO L87 Difference]: Start difference. First operand 130 states and 319 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 21:27:41,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:41,396 INFO L93 Difference]: Finished difference Result 256 states and 553 transitions. [2021-10-06 21:27:41,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-10-06 21:27:41,397 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 21:27:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:41,398 INFO L225 Difference]: With dead ends: 256 [2021-10-06 21:27:41,398 INFO L226 Difference]: Without dead ends: 232 [2021-10-06 21:27:41,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1797.3ms TimeCoverageRelationStatistics Valid=241, Invalid=949, Unknown=0, NotChecked=0, Total=1190 [2021-10-06 21:27:41,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-10-06 21:27:41,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 116. [2021-10-06 21:27:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.5391304347826087) internal successors, (292), 115 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:41,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 292 transitions. [2021-10-06 21:27:41,404 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 292 transitions. Word has length 15 [2021-10-06 21:27:41,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:41,405 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 292 transitions. [2021-10-06 21:27:41,405 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 21:27:41,405 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 292 transitions. [2021-10-06 21:27:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:27:41,406 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:41,406 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:41,420 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 21:27:41,621 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 21:27:41,622 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 21:27:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:41,623 INFO L82 PathProgramCache]: Analyzing trace with hash 317642158, now seen corresponding path program 5 times [2021-10-06 21:27:41,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:41,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740463361] [2021-10-06 21:27:41,623 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:27:41,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:41,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:41,625 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 21:27:41,626 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 21:27:41,991 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:27:41,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:41,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:27:41,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:42,411 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 21:27:42,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:43,664 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 21:27:43,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:43,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740463361] [2021-10-06 21:27:43,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1740463361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:43,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:43,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:27:43,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484908913] [2021-10-06 21:27:43,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:27:43,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:43,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:27:43,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:27:43,667 INFO L87 Difference]: Start difference. First operand 116 states and 292 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:51,617 INFO L93 Difference]: Finished difference Result 351 states and 772 transitions. [2021-10-06 21:27:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:27:51,619 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 21:27:51,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:51,621 INFO L225 Difference]: With dead ends: 351 [2021-10-06 21:27:51,621 INFO L226 Difference]: Without dead ends: 336 [2021-10-06 21:27:51,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 7894.2ms TimeCoverageRelationStatistics Valid=561, Invalid=1791, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:27:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2021-10-06 21:27:51,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 150. [2021-10-06 21:27:51,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.9194630872483223) internal successors, (435), 149 states have internal predecessors, (435), 0 states have call successors, (0), 0 states 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 21:27:51,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 435 transitions. [2021-10-06 21:27:51,629 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 435 transitions. Word has length 17 [2021-10-06 21:27:51,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:27:51,629 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 435 transitions. [2021-10-06 21:27:51,629 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 21:27:51,630 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 435 transitions. [2021-10-06 21:27:51,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:27:51,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:27:51,630 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:27:51,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-06 21:27:51,832 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 21:27:51,833 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 21:27:51,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:27:51,834 INFO L82 PathProgramCache]: Analyzing trace with hash 381241138, now seen corresponding path program 6 times [2021-10-06 21:27:51,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:27:51,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1628852624] [2021-10-06 21:27:51,835 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:27:51,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:27:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:27:51,836 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 21:27:51,837 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 21:27:52,278 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:27:52,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:27:52,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:27:52,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:27:52,669 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 21:27:52,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:27:53,926 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 21:27:53,926 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:27:53,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1628852624] [2021-10-06 21:27:53,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1628852624] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:27:53,927 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:27:53,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:27:53,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93798786] [2021-10-06 21:27:53,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:27:53,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:27:53,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:27:53,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:27:53,929 INFO L87 Difference]: Start difference. First operand 150 states and 435 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 21:28:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:00,331 INFO L93 Difference]: Finished difference Result 339 states and 746 transitions. [2021-10-06 21:28:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-06 21:28:00,332 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 21:28:00,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:00,334 INFO L225 Difference]: With dead ends: 339 [2021-10-06 21:28:00,334 INFO L226 Difference]: Without dead ends: 324 [2021-10-06 21:28:00,335 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 6346.0ms TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:28:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-06 21:28:00,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 148. [2021-10-06 21:28:00,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.8979591836734695) internal successors, (426), 147 states have internal predecessors, (426), 0 states have call successors, (0), 0 states 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 21:28:00,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 426 transitions. [2021-10-06 21:28:00,341 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 426 transitions. Word has length 17 [2021-10-06 21:28:00,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:00,341 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 426 transitions. [2021-10-06 21:28:00,341 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 21:28:00,341 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 426 transitions. [2021-10-06 21:28:00,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:00,342 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:00,342 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:00,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:00,544 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 21:28:00,545 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 21:28:00,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:00,545 INFO L82 PathProgramCache]: Analyzing trace with hash 1212382710, now seen corresponding path program 7 times [2021-10-06 21:28:00,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:00,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893486240] [2021-10-06 21:28:00,546 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:28:00,546 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:00,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:00,547 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 21:28:00,549 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 21:28:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:28:00,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:28:00,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:01,356 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 21:28:01,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:02,482 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 21:28:02,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:02,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893486240] [2021-10-06 21:28:02,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893486240] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:02,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:02,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:02,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496782197] [2021-10-06 21:28:02,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:02,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:02,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:02,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:02,485 INFO L87 Difference]: Start difference. First operand 148 states and 426 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 21:28:08,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:08,325 INFO L93 Difference]: Finished difference Result 320 states and 733 transitions. [2021-10-06 21:28:08,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:28:08,326 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 21:28:08,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:08,328 INFO L225 Difference]: With dead ends: 320 [2021-10-06 21:28:08,328 INFO L226 Difference]: Without dead ends: 298 [2021-10-06 21:28:08,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 5894.8ms TimeCoverageRelationStatistics Valid=444, Invalid=1448, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:28:08,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-10-06 21:28:08,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 160. [2021-10-06 21:28:08,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 2.8238993710691824) internal successors, (449), 159 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 21:28:08,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 449 transitions. [2021-10-06 21:28:08,335 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 449 transitions. Word has length 17 [2021-10-06 21:28:08,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:08,335 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 449 transitions. [2021-10-06 21:28:08,336 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 21:28:08,336 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 449 transitions. [2021-10-06 21:28:08,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:08,337 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:08,337 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:08,351 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 21:28:08,550 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 21:28:08,551 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 21:28:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash 719689210, now seen corresponding path program 16 times [2021-10-06 21:28:08,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:08,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35199205] [2021-10-06 21:28:08,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:08,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:08,553 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 21:28:08,559 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 21:28:09,018 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:09,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:09,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:28:09,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:09,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:09,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:10,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:10,513 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:10,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35199205] [2021-10-06 21:28:10,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35199205] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:10,513 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:10,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:10,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053778849] [2021-10-06 21:28:10,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:10,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:10,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:10,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:10,515 INFO L87 Difference]: Start difference. First operand 160 states and 449 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 21:28:16,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:16,567 INFO L93 Difference]: Finished difference Result 280 states and 635 transitions. [2021-10-06 21:28:16,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-06 21:28:16,568 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 21:28:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:16,570 INFO L225 Difference]: With dead ends: 280 [2021-10-06 21:28:16,570 INFO L226 Difference]: Without dead ends: 260 [2021-10-06 21:28:16,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 456 ImplicationChecksByTransitivity, 6080.9ms TimeCoverageRelationStatistics Valid=485, Invalid=1771, Unknown=0, NotChecked=0, Total=2256 [2021-10-06 21:28:16,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-10-06 21:28:16,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 164. [2021-10-06 21:28:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 2.803680981595092) internal successors, (457), 163 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 21:28:16,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 457 transitions. [2021-10-06 21:28:16,578 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 457 transitions. Word has length 17 [2021-10-06 21:28:16,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:16,578 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 457 transitions. [2021-10-06 21:28:16,578 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 21:28:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 457 transitions. [2021-10-06 21:28:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:16,579 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:16,579 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:16,595 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 21:28:16,793 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 21:28:16,793 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 21:28:16,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:16,794 INFO L82 PathProgramCache]: Analyzing trace with hash 126377776, now seen corresponding path program 8 times [2021-10-06 21:28:16,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:16,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1895533746] [2021-10-06 21:28:16,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:28:16,795 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:16,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:16,796 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 21:28:16,798 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 21:28:17,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:28:17,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:17,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:28:17,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:17,665 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 21:28:17,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:18,760 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 21:28:18,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:18,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1895533746] [2021-10-06 21:28:18,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1895533746] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:18,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:18,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:18,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367877196] [2021-10-06 21:28:18,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:18,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:18,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:18,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:18,762 INFO L87 Difference]: Start difference. First operand 164 states and 457 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 21:28:24,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:24,513 INFO L93 Difference]: Finished difference Result 382 states and 898 transitions. [2021-10-06 21:28:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:28:24,515 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 21:28:24,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:24,516 INFO L225 Difference]: With dead ends: 382 [2021-10-06 21:28:24,516 INFO L226 Difference]: Without dead ends: 360 [2021-10-06 21:28:24,517 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 5803.9ms TimeCoverageRelationStatistics Valid=478, Invalid=1592, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:28:24,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-10-06 21:28:24,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 178. [2021-10-06 21:28:24,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.903954802259887) internal successors, (514), 177 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 21:28:24,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 514 transitions. [2021-10-06 21:28:24,524 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 514 transitions. Word has length 17 [2021-10-06 21:28:24,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:24,525 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 514 transitions. [2021-10-06 21:28:24,525 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 21:28:24,525 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 514 transitions. [2021-10-06 21:28:24,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:24,526 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:24,526 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:24,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:24,740 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 21:28:24,740 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 21:28:24,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:24,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1303802392, now seen corresponding path program 9 times [2021-10-06 21:28:24,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:24,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668755383] [2021-10-06 21:28:24,743 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:24,743 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:24,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:24,744 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 21:28:24,745 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 21:28:25,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:28:25,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:25,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:28:25,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:25,701 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 21:28:25,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:26,812 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 21:28:26,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:26,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668755383] [2021-10-06 21:28:26,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [668755383] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:26,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:26,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:26,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242684497] [2021-10-06 21:28:26,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:26,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:26,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:26,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:26,815 INFO L87 Difference]: Start difference. First operand 178 states and 514 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 21:28:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:32,191 INFO L93 Difference]: Finished difference Result 328 states and 768 transitions. [2021-10-06 21:28:32,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-06 21:28:32,193 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 21:28:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:32,195 INFO L225 Difference]: With dead ends: 328 [2021-10-06 21:28:32,195 INFO L226 Difference]: Without dead ends: 318 [2021-10-06 21:28:32,196 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 5558.4ms TimeCoverageRelationStatistics Valid=382, Invalid=1340, Unknown=0, NotChecked=0, Total=1722 [2021-10-06 21:28:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-10-06 21:28:32,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 178. [2021-10-06 21:28:32,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.903954802259887) internal successors, (514), 177 states have internal predecessors, (514), 0 states have call successors, (0), 0 states 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 21:28:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 514 transitions. [2021-10-06 21:28:32,201 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 514 transitions. Word has length 17 [2021-10-06 21:28:32,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:32,202 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 514 transitions. [2021-10-06 21:28:32,202 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 21:28:32,202 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 514 transitions. [2021-10-06 21:28:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:32,202 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:32,203 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:32,214 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 21:28:32,403 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 21:28:32,404 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 21:28:32,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:32,405 INFO L82 PathProgramCache]: Analyzing trace with hash 163204640, now seen corresponding path program 10 times [2021-10-06 21:28:32,405 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:32,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549245250] [2021-10-06 21:28:32,406 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:32,406 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:32,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:32,408 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 21:28:32,410 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 21:28:32,887 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:32,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:32,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:28:32,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:33,292 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 21:28:33,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:34,308 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 21:28:34,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:34,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549245250] [2021-10-06 21:28:34,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549245250] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:34,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:34,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:34,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405765610] [2021-10-06 21:28:34,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:34,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:34,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:34,310 INFO L87 Difference]: Start difference. First operand 178 states and 514 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 21:28:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:42,371 INFO L93 Difference]: Finished difference Result 496 states and 1135 transitions. [2021-10-06 21:28:42,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:28:42,372 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 21:28:42,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:42,374 INFO L225 Difference]: With dead ends: 496 [2021-10-06 21:28:42,374 INFO L226 Difference]: Without dead ends: 476 [2021-10-06 21:28:42,375 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 7612.4ms TimeCoverageRelationStatistics Valid=756, Invalid=2550, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:28:42,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-06 21:28:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 204. [2021-10-06 21:28:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.1083743842364533) internal successors, (631), 203 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 21:28:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 631 transitions. [2021-10-06 21:28:42,382 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 631 transitions. Word has length 17 [2021-10-06 21:28:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:42,383 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 631 transitions. [2021-10-06 21:28:42,383 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 21:28:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 631 transitions. [2021-10-06 21:28:42,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:42,384 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:42,384 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:42,399 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 21:28:42,598 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 21:28:42,599 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 21:28:42,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:42,599 INFO L82 PathProgramCache]: Analyzing trace with hash 226803620, now seen corresponding path program 11 times [2021-10-06 21:28:42,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:42,600 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75982218] [2021-10-06 21:28:42,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:28:42,601 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:42,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:42,602 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 21:28:42,609 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 21:28:43,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:28:43,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:43,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:28:43,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:43,509 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 21:28:43,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:44,820 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 21:28:44,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:44,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75982218] [2021-10-06 21:28:44,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75982218] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:44,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:44,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:44,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203254197] [2021-10-06 21:28:44,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:44,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:44,823 INFO L87 Difference]: Start difference. First operand 204 states and 631 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 21:28:52,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:52,854 INFO L93 Difference]: Finished difference Result 425 states and 1010 transitions. [2021-10-06 21:28:52,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:28:52,855 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 21:28:52,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:52,857 INFO L225 Difference]: With dead ends: 425 [2021-10-06 21:28:52,857 INFO L226 Difference]: Without dead ends: 410 [2021-10-06 21:28:52,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 7754.6ms TimeCoverageRelationStatistics Valid=622, Invalid=1828, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:28:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-06 21:28:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 194. [2021-10-06 21:28:52,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 3.0362694300518136) internal successors, (586), 193 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:52,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 586 transitions. [2021-10-06 21:28:52,865 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 586 transitions. Word has length 17 [2021-10-06 21:28:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:52,865 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 586 transitions. [2021-10-06 21:28:52,865 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 21:28:52,865 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 586 transitions. [2021-10-06 21:28:52,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:28:52,866 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:52,866 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:52,878 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 21:28:53,069 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 21:28:53,069 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 21:28:53,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:53,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1057945192, now seen corresponding path program 12 times [2021-10-06 21:28:53,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:53,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [76546139] [2021-10-06 21:28:53,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:53,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:53,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:53,073 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 21:28:53,074 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 21:28:53,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-06 21:28:53,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:53,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:28:53,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:54,005 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 21:28:54,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:55,161 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 21:28:55,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:55,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [76546139] [2021-10-06 21:28:55,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [76546139] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:55,162 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:55,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:28:55,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825679012] [2021-10-06 21:28:55,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:28:55,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:28:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:28:55,164 INFO L87 Difference]: Start difference. First operand 194 states and 586 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:01,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:01,873 INFO L93 Difference]: Finished difference Result 410 states and 975 transitions. [2021-10-06 21:29:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-06 21:29:01,874 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 21:29:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:01,876 INFO L225 Difference]: With dead ends: 410 [2021-10-06 21:29:01,876 INFO L226 Difference]: Without dead ends: 388 [2021-10-06 21:29:01,877 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 462 ImplicationChecksByTransitivity, 6606.0ms TimeCoverageRelationStatistics Valid=482, Invalid=1588, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:29:01,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-06 21:29:01,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 194. [2021-10-06 21:29:01,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 3.0259067357512954) internal successors, (584), 193 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 21:29:01,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 584 transitions. [2021-10-06 21:29:01,882 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 584 transitions. Word has length 17 [2021-10-06 21:29:01,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:01,883 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 584 transitions. [2021-10-06 21:29:01,883 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 21:29:01,883 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 584 transitions. [2021-10-06 21:29:01,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:01,884 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:01,884 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:01,897 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 21:29:02,090 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 21:29:02,091 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 21:29:02,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:02,091 INFO L82 PathProgramCache]: Analyzing trace with hash 565251692, now seen corresponding path program 17 times [2021-10-06 21:29:02,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:02,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640122879] [2021-10-06 21:29:02,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:29:02,093 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:02,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:02,095 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 21:29:02,096 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 21:29:02,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:29:02,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:02,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:29:02,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:02,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:02,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:04,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:04,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640122879] [2021-10-06 21:29:04,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640122879] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:04,076 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:04,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:04,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023410142] [2021-10-06 21:29:04,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:04,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:04,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:04,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:04,077 INFO L87 Difference]: Start difference. First operand 194 states and 584 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 21:29:10,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:10,255 INFO L93 Difference]: Finished difference Result 360 states and 851 transitions. [2021-10-06 21:29:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:29:10,256 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 21:29:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:10,258 INFO L225 Difference]: With dead ends: 360 [2021-10-06 21:29:10,258 INFO L226 Difference]: Without dead ends: 340 [2021-10-06 21:29:10,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 5952.2ms TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:29:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-10-06 21:29:10,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 194. [2021-10-06 21:29:10,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 3.0259067357512954) internal successors, (584), 193 states have internal predecessors, (584), 0 states have call successors, (0), 0 states 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 21:29:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 584 transitions. [2021-10-06 21:29:10,264 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 584 transitions. Word has length 17 [2021-10-06 21:29:10,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:10,264 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 584 transitions. [2021-10-06 21:29:10,264 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 21:29:10,264 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 584 transitions. [2021-10-06 21:29:10,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:10,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:10,265 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:10,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:29:10,465 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 21:29:10,466 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 21:29:10,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:10,466 INFO L82 PathProgramCache]: Analyzing trace with hash -28059742, now seen corresponding path program 13 times [2021-10-06 21:29:10,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:10,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963991599] [2021-10-06 21:29:10,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:29:10,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:10,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:10,469 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 21:29:10,470 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 21:29:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:29:11,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:29:11,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:11,420 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 21:29:11,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:12,521 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 21:29:12,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:12,522 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963991599] [2021-10-06 21:29:12,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963991599] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:12,522 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:12,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:12,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277068635] [2021-10-06 21:29:12,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:12,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:12,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:12,524 INFO L87 Difference]: Start difference. First operand 194 states and 584 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 21:29:20,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:20,273 INFO L93 Difference]: Finished difference Result 474 states and 1131 transitions. [2021-10-06 21:29:20,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:29:20,274 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 21:29:20,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:20,277 INFO L225 Difference]: With dead ends: 474 [2021-10-06 21:29:20,277 INFO L226 Difference]: Without dead ends: 456 [2021-10-06 21:29:20,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 7598.7ms TimeCoverageRelationStatistics Valid=621, Invalid=2031, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:29:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-10-06 21:29:20,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 210. [2021-10-06 21:29:20,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.0669856459330145) internal successors, (641), 209 states have internal predecessors, (641), 0 states have call successors, (0), 0 states 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 21:29:20,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 641 transitions. [2021-10-06 21:29:20,285 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 641 transitions. Word has length 17 [2021-10-06 21:29:20,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:20,285 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 641 transitions. [2021-10-06 21:29:20,285 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 21:29:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 641 transitions. [2021-10-06 21:29:20,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:20,286 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:20,286 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:20,298 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 21:29:20,486 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 21:29:20,487 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 21:29:20,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:20,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1458239910, now seen corresponding path program 14 times [2021-10-06 21:29:20,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:20,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607546544] [2021-10-06 21:29:20,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:29:20,489 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:20,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:20,490 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 21:29:20,491 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 21:29:21,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:29:21,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:21,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:29:21,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:21,555 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 21:29:21,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:22,774 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 21:29:22,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:22,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607546544] [2021-10-06 21:29:22,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607546544] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:22,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:22,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:22,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352785861] [2021-10-06 21:29:22,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:22,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:22,777 INFO L87 Difference]: Start difference. First operand 210 states and 641 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 21:29:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:30,673 INFO L93 Difference]: Finished difference Result 378 states and 926 transitions. [2021-10-06 21:29:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:29:30,674 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 21:29:30,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:30,677 INFO L225 Difference]: With dead ends: 378 [2021-10-06 21:29:30,677 INFO L226 Difference]: Without dead ends: 368 [2021-10-06 21:29:30,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 7825.8ms TimeCoverageRelationStatistics Valid=561, Invalid=1989, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:29:30,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-10-06 21:29:30,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 184. [2021-10-06 21:29:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.8852459016393444) internal successors, (528), 183 states have internal predecessors, (528), 0 states have call successors, (0), 0 states 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 21:29:30,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 528 transitions. [2021-10-06 21:29:30,685 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 528 transitions. Word has length 17 [2021-10-06 21:29:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:30,686 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 528 transitions. [2021-10-06 21:29:30,686 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 21:29:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 528 transitions. [2021-10-06 21:29:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:30,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:30,687 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:30,703 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 21:29:30,900 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 21:29:30,900 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 21:29:30,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:30,901 INFO L82 PathProgramCache]: Analyzing trace with hash -894376152, now seen corresponding path program 15 times [2021-10-06 21:29:30,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:30,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1192136681] [2021-10-06 21:29:30,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:29:30,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:30,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:30,903 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 21:29:30,941 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 21:29:31,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:29:31,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:31,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:29:31,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:32,049 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 21:29:32,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:33,130 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 21:29:33,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:33,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1192136681] [2021-10-06 21:29:33,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1192136681] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:33,131 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:33,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:33,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318727150] [2021-10-06 21:29:33,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:33,134 INFO L87 Difference]: Start difference. First operand 184 states and 528 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 21:29:39,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:39,664 INFO L93 Difference]: Finished difference Result 505 states and 1187 transitions. [2021-10-06 21:29:39,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:29:39,665 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 21:29:39,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:39,667 INFO L225 Difference]: With dead ends: 505 [2021-10-06 21:29:39,667 INFO L226 Difference]: Without dead ends: 486 [2021-10-06 21:29:39,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 693 ImplicationChecksByTransitivity, 6226.9ms TimeCoverageRelationStatistics Valid=717, Invalid=1935, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:29:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-06 21:29:39,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 214. [2021-10-06 21:29:39,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.136150234741784) internal successors, (668), 213 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 21:29:39,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 668 transitions. [2021-10-06 21:29:39,677 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 668 transitions. Word has length 17 [2021-10-06 21:29:39,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:39,677 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 668 transitions. [2021-10-06 21:29:39,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:39,678 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 668 transitions. [2021-10-06 21:29:39,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:39,679 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:39,679 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:39,694 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 21:29:39,893 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 21:29:39,894 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 21:29:39,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:39,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1357364098, now seen corresponding path program 16 times [2021-10-06 21:29:39,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:39,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1397340444] [2021-10-06 21:29:39,896 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:29:39,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:39,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:39,897 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 21:29:39,898 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 21:29:40,541 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:29:40,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:40,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:29:40,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:40,917 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 21:29:40,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:41,936 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 21:29:41,937 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:41,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1397340444] [2021-10-06 21:29:41,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1397340444] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:41,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:41,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:41,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857458105] [2021-10-06 21:29:41,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:41,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:41,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:41,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:41,939 INFO L87 Difference]: Start difference. First operand 214 states and 668 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 21:29:50,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:50,313 INFO L93 Difference]: Finished difference Result 499 states and 1204 transitions. [2021-10-06 21:29:50,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:29:50,314 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 21:29:50,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:29:50,317 INFO L225 Difference]: With dead ends: 499 [2021-10-06 21:29:50,317 INFO L226 Difference]: Without dead ends: 484 [2021-10-06 21:29:50,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 7737.5ms TimeCoverageRelationStatistics Valid=765, Invalid=3017, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:29:50,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-06 21:29:50,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 228. [2021-10-06 21:29:50,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 3.171806167400881) internal successors, (720), 227 states have internal predecessors, (720), 0 states have call successors, (0), 0 states 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 21:29:50,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 720 transitions. [2021-10-06 21:29:50,326 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 720 transitions. Word has length 17 [2021-10-06 21:29:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:29:50,326 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 720 transitions. [2021-10-06 21:29:50,327 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 21:29:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 720 transitions. [2021-10-06 21:29:50,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:29:50,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:29:50,328 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:29:50,345 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 21:29:50,541 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 21:29:50,542 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 21:29:50,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:29:50,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1507423030, now seen corresponding path program 18 times [2021-10-06 21:29:50,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:29:50,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003348766] [2021-10-06 21:29:50,543 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:29:50,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:29:50,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:29:50,545 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 21:29:50,547 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 21:29:51,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:29:51,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:29:51,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:29:51,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:29:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:51,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:29:52,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:29:52,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:29:52,766 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003348766] [2021-10-06 21:29:52,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003348766] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:29:52,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:29:52,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:29:52,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783222077] [2021-10-06 21:29:52,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:29:52,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:29:52,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:29:52,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:29:52,769 INFO L87 Difference]: Start difference. First operand 228 states and 720 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 21:30:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:01,477 INFO L93 Difference]: Finished difference Result 453 states and 1095 transitions. [2021-10-06 21:30:01,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:30:01,479 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 21:30:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:01,481 INFO L225 Difference]: With dead ends: 453 [2021-10-06 21:30:01,481 INFO L226 Difference]: Without dead ends: 438 [2021-10-06 21:30:01,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 839 ImplicationChecksByTransitivity, 8281.4ms TimeCoverageRelationStatistics Valid=775, Invalid=2765, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:30:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-06 21:30:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 226. [2021-10-06 21:30:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 225 states have (on average 3.16) internal successors, (711), 225 states have internal predecessors, (711), 0 states have call successors, (0), 0 states 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 21:30:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 711 transitions. [2021-10-06 21:30:01,490 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 711 transitions. Word has length 17 [2021-10-06 21:30:01,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:01,490 INFO L470 AbstractCegarLoop]: Abstraction has 226 states and 711 transitions. [2021-10-06 21:30:01,490 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 21:30:01,490 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 711 transitions. [2021-10-06 21:30:01,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:01,491 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:01,491 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:01,510 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 21:30:01,705 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 21:30:01,705 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 21:30:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:01,706 INFO L82 PathProgramCache]: Analyzing trace with hash 2071286788, now seen corresponding path program 17 times [2021-10-06 21:30:01,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:01,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307271400] [2021-10-06 21:30:01,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:30:01,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:01,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:01,708 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 21:30:01,744 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 21:30:02,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:30:02,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:02,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:30:02,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:02,856 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 21:30:02,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:04,206 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 21:30:04,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:04,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307271400] [2021-10-06 21:30:04,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307271400] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:04,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:04,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:04,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546360602] [2021-10-06 21:30:04,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:04,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:04,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:04,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:04,208 INFO L87 Difference]: Start difference. First operand 226 states and 711 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 21:30:13,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:13,238 INFO L93 Difference]: Finished difference Result 529 states and 1268 transitions. [2021-10-06 21:30:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-06 21:30:13,239 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 21:30:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:13,243 INFO L225 Difference]: With dead ends: 529 [2021-10-06 21:30:13,243 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:30:13,243 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 8799.3ms TimeCoverageRelationStatistics Valid=755, Invalid=2551, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:30:13,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:30:13,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 234. [2021-10-06 21:30:13,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.2060085836909873) internal successors, (747), 233 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 21:30:13,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 747 transitions. [2021-10-06 21:30:13,252 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 747 transitions. Word has length 17 [2021-10-06 21:30:13,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:13,253 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 747 transitions. [2021-10-06 21:30:13,253 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 21:30:13,253 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 747 transitions. [2021-10-06 21:30:13,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:13,254 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:13,254 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:13,272 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 21:30:13,467 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 21:30:13,468 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 21:30:13,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:13,468 INFO L82 PathProgramCache]: Analyzing trace with hash 2134885768, now seen corresponding path program 18 times [2021-10-06 21:30:13,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:13,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647015587] [2021-10-06 21:30:13,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:30:13,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:13,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:13,471 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 21:30:13,473 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 21:30:14,188 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:30:14,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:14,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:30:14,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:14,571 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 21:30:14,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:15,847 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 21:30:15,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:15,847 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647015587] [2021-10-06 21:30:15,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647015587] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:15,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:15,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:15,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724691832] [2021-10-06 21:30:15,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:15,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:15,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:15,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:15,849 INFO L87 Difference]: Start difference. First operand 234 states and 747 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 21:30:25,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:25,654 INFO L93 Difference]: Finished difference Result 505 states and 1232 transitions. [2021-10-06 21:30:25,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:30:25,656 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 21:30:25,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:25,659 INFO L225 Difference]: With dead ends: 505 [2021-10-06 21:30:25,659 INFO L226 Difference]: Without dead ends: 490 [2021-10-06 21:30:25,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 902 ImplicationChecksByTransitivity, 9539.0ms TimeCoverageRelationStatistics Valid=842, Invalid=2818, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:30:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-06 21:30:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 234. [2021-10-06 21:30:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.2060085836909873) internal successors, (747), 233 states have internal predecessors, (747), 0 states have call successors, (0), 0 states 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 21:30:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 747 transitions. [2021-10-06 21:30:25,669 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 747 transitions. Word has length 17 [2021-10-06 21:30:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:25,669 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 747 transitions. [2021-10-06 21:30:25,670 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 21:30:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 747 transitions. [2021-10-06 21:30:25,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:25,671 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:25,671 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:25,687 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 21:30:25,886 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 21:30:25,887 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 21:30:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:25,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1328939956, now seen corresponding path program 19 times [2021-10-06 21:30:25,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:25,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846730905] [2021-10-06 21:30:25,889 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:25,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:25,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:25,890 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 21:30:25,896 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 21:30:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:26,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:30:26,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:26,978 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 21:30:26,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:28,046 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 21:30:28,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:28,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846730905] [2021-10-06 21:30:28,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [846730905] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:28,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:28,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:28,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142402159] [2021-10-06 21:30:28,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:28,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:28,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:28,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:28,048 INFO L87 Difference]: Start difference. First operand 234 states and 747 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 21:30:34,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:34,939 INFO L93 Difference]: Finished difference Result 442 states and 1106 transitions. [2021-10-06 21:30:34,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:30:34,940 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 21:30:34,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:34,943 INFO L225 Difference]: With dead ends: 442 [2021-10-06 21:30:34,943 INFO L226 Difference]: Without dead ends: 420 [2021-10-06 21:30:34,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 6719.8ms TimeCoverageRelationStatistics Valid=502, Invalid=1948, Unknown=0, NotChecked=0, Total=2450 [2021-10-06 21:30:34,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-10-06 21:30:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 234. [2021-10-06 21:30:34,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.1974248927038627) internal successors, (745), 233 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 21:30:34,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 745 transitions. [2021-10-06 21:30:34,950 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 745 transitions. Word has length 17 [2021-10-06 21:30:34,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:34,950 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 745 transitions. [2021-10-06 21:30:34,950 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 21:30:34,950 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 745 transitions. [2021-10-06 21:30:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:34,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:34,951 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:34,964 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 21:30:35,155 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 21:30:35,155 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 21:30:35,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:35,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1821633456, now seen corresponding path program 19 times [2021-10-06 21:30:35,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:35,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026250555] [2021-10-06 21:30:35,158 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:30:35,158 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:35,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:35,159 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 21:30:35,160 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 21:30:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:30:35,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:30:35,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:36,255 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:36,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:30:37,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:37,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026250555] [2021-10-06 21:30:37,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026250555] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:37,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:37,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:37,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848378265] [2021-10-06 21:30:37,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:37,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:37,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:37,416 INFO L87 Difference]: Start difference. First operand 234 states and 745 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 21:30:45,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:45,788 INFO L93 Difference]: Finished difference Result 384 states and 986 transitions. [2021-10-06 21:30:45,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:30:45,789 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 21:30:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:45,791 INFO L225 Difference]: With dead ends: 384 [2021-10-06 21:30:45,791 INFO L226 Difference]: Without dead ends: 364 [2021-10-06 21:30:45,791 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 8113.9ms TimeCoverageRelationStatistics Valid=645, Invalid=2435, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:30:45,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-10-06 21:30:45,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 234. [2021-10-06 21:30:45,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 3.1974248927038627) internal successors, (745), 233 states have internal predecessors, (745), 0 states have call successors, (0), 0 states 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 21:30:45,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 745 transitions. [2021-10-06 21:30:45,799 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 745 transitions. Word has length 17 [2021-10-06 21:30:45,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:45,799 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 745 transitions. [2021-10-06 21:30:45,799 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 21:30:45,800 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 745 transitions. [2021-10-06 21:30:45,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:45,801 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:45,801 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:45,818 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 21:30:46,016 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 21:30:46,017 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 21:30:46,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:46,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1880022406, now seen corresponding path program 20 times [2021-10-06 21:30:46,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:46,018 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634127856] [2021-10-06 21:30:46,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:30:46,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:46,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:46,020 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 21:30:46,021 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 21:30:46,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:30:46,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:46,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:30:46,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:47,228 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 21:30:47,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:48,248 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 21:30:48,248 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:48,249 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634127856] [2021-10-06 21:30:48,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634127856] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:48,249 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:48,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:48,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634094268] [2021-10-06 21:30:48,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:48,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:48,250 INFO L87 Difference]: Start difference. First operand 234 states and 745 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 21:30:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:30:56,416 INFO L93 Difference]: Finished difference Result 504 states and 1262 transitions. [2021-10-06 21:30:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:30:56,418 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 21:30:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:56,420 INFO L225 Difference]: With dead ends: 504 [2021-10-06 21:30:56,421 INFO L226 Difference]: Without dead ends: 482 [2021-10-06 21:30:56,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 7765.1ms TimeCoverageRelationStatistics Valid=630, Invalid=2340, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:30:56,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2021-10-06 21:30:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 246. [2021-10-06 21:30:56,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 3.236734693877551) internal successors, (793), 245 states have internal predecessors, (793), 0 states have call successors, (0), 0 states 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 21:30:56,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 793 transitions. [2021-10-06 21:30:56,430 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 793 transitions. Word has length 17 [2021-10-06 21:30:56,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:30:56,431 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 793 transitions. [2021-10-06 21:30:56,431 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 21:30:56,431 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 793 transitions. [2021-10-06 21:30:56,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:30:56,432 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:30:56,432 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:30:56,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:56,645 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 21:30:56,646 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 21:30:56,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:30:56,646 INFO L82 PathProgramCache]: Analyzing trace with hash -2138851836, now seen corresponding path program 21 times [2021-10-06 21:30:56,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:30:56,647 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607809178] [2021-10-06 21:30:56,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:30:56,648 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:30:56,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:30:56,649 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 21:30:56,650 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 21:30:57,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:30:57,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:30:57,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:30:57,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:30:57,897 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 21:30:57,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:30:59,025 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 21:30:59,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:30:59,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607809178] [2021-10-06 21:30:59,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607809178] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:30:59,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:30:59,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:30:59,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781448433] [2021-10-06 21:30:59,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:30:59,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:30:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:30:59,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:30:59,028 INFO L87 Difference]: Start difference. First operand 246 states and 793 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 21:31:07,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:07,295 INFO L93 Difference]: Finished difference Result 571 states and 1404 transitions. [2021-10-06 21:31:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-10-06 21:31:07,297 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 21:31:07,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:07,300 INFO L225 Difference]: With dead ends: 571 [2021-10-06 21:31:07,300 INFO L226 Difference]: Without dead ends: 544 [2021-10-06 21:31:07,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 793 ImplicationChecksByTransitivity, 8099.1ms TimeCoverageRelationStatistics Valid=726, Invalid=2466, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:31:07,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-10-06 21:31:07,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 262. [2021-10-06 21:31:07,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 261 states have (on average 3.2911877394636013) internal successors, (859), 261 states have internal predecessors, (859), 0 states have call successors, (0), 0 states 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 21:31:07,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 859 transitions. [2021-10-06 21:31:07,309 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 859 transitions. Word has length 17 [2021-10-06 21:31:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:07,310 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 859 transitions. [2021-10-06 21:31:07,310 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 21:31:07,310 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 859 transitions. [2021-10-06 21:31:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:07,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:07,311 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:07,324 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-06 21:31:07,512 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 21:31:07,513 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 21:31:07,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:07,513 INFO L82 PathProgramCache]: Analyzing trace with hash -2075252856, now seen corresponding path program 22 times [2021-10-06 21:31:07,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:07,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818906145] [2021-10-06 21:31:07,514 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:07,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:07,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:07,516 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 21:31:07,518 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 21:31:08,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:08,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:08,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:31:08,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:08,632 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 21:31:08,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:09,540 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 21:31:09,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:09,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818906145] [2021-10-06 21:31:09,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818906145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:09,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:09,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:09,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560214966] [2021-10-06 21:31:09,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:09,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:09,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:09,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:09,541 INFO L87 Difference]: Start difference. First operand 262 states and 859 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 21:31:17,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:17,361 INFO L93 Difference]: Finished difference Result 604 states and 1439 transitions. [2021-10-06 21:31:17,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-10-06 21:31:17,362 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 21:31:17,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:17,366 INFO L225 Difference]: With dead ends: 604 [2021-10-06 21:31:17,366 INFO L226 Difference]: Without dead ends: 584 [2021-10-06 21:31:17,367 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1301 ImplicationChecksByTransitivity, 7196.7ms TimeCoverageRelationStatistics Valid=819, Invalid=3737, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:31:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-10-06 21:31:17,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 260. [2021-10-06 21:31:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 3.281853281853282) internal successors, (850), 259 states have internal predecessors, (850), 0 states have call successors, (0), 0 states 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 21:31:17,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 850 transitions. [2021-10-06 21:31:17,377 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 850 transitions. Word has length 17 [2021-10-06 21:31:17,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:17,377 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 850 transitions. [2021-10-06 21:31:17,377 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 21:31:17,377 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 850 transitions. [2021-10-06 21:31:17,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:17,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:17,378 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:17,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-06 21:31:17,585 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 21:31:17,585 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 21:31:17,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:17,586 INFO L82 PathProgramCache]: Analyzing trace with hash -465445976, now seen corresponding path program 20 times [2021-10-06 21:31:17,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:17,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604312798] [2021-10-06 21:31:17,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:31:17,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:17,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:17,588 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 21:31:17,595 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 21:31:18,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:31:18,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:18,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:31:18,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:18,845 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:18,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:19,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:19,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604312798] [2021-10-06 21:31:19,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604312798] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:19,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:19,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:19,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629577211] [2021-10-06 21:31:19,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:19,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:19,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:19,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:19,954 INFO L87 Difference]: Start difference. First operand 260 states and 850 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 21:31:27,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:27,660 INFO L93 Difference]: Finished difference Result 590 states and 1486 transitions. [2021-10-06 21:31:27,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:31:27,661 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 21:31:27,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:27,664 INFO L225 Difference]: With dead ends: 590 [2021-10-06 21:31:27,664 INFO L226 Difference]: Without dead ends: 570 [2021-10-06 21:31:27,665 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 7499.0ms TimeCoverageRelationStatistics Valid=665, Invalid=2197, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:31:27,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2021-10-06 21:31:27,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 280. [2021-10-06 21:31:27,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.369175627240143) internal successors, (940), 279 states have internal predecessors, (940), 0 states have call successors, (0), 0 states 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 21:31:27,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 940 transitions. [2021-10-06 21:31:27,675 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 940 transitions. Word has length 17 [2021-10-06 21:31:27,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:27,675 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 940 transitions. [2021-10-06 21:31:27,675 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 21:31:27,675 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 940 transitions. [2021-10-06 21:31:27,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:27,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:27,676 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:27,693 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 21:31:27,890 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 21:31:27,891 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 21:31:27,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:27,891 INFO L82 PathProgramCache]: Analyzing trace with hash -401846996, now seen corresponding path program 21 times [2021-10-06 21:31:27,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:27,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1875046127] [2021-10-06 21:31:27,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:31:27,893 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:27,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:27,894 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 21:31:27,895 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 21:31:28,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:31:28,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:31:28,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:29,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:30,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:30,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:30,009 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1875046127] [2021-10-06 21:31:30,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1875046127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:30,009 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:30,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:30,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354198036] [2021-10-06 21:31:30,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:30,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:30,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:30,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:30,010 INFO L87 Difference]: Start difference. First operand 280 states and 940 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 21:31:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:37,376 INFO L93 Difference]: Finished difference Result 625 states and 1527 transitions. [2021-10-06 21:31:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:31:37,377 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 21:31:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:37,380 INFO L225 Difference]: With dead ends: 625 [2021-10-06 21:31:37,380 INFO L226 Difference]: Without dead ends: 600 [2021-10-06 21:31:37,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1083 ImplicationChecksByTransitivity, 6889.5ms TimeCoverageRelationStatistics Valid=912, Invalid=3248, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:31:37,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-10-06 21:31:37,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 270. [2021-10-06 21:31:37,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 3.3271375464684017) internal successors, (895), 269 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 21:31:37,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 895 transitions. [2021-10-06 21:31:37,391 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 895 transitions. Word has length 17 [2021-10-06 21:31:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:37,391 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 895 transitions. [2021-10-06 21:31:37,391 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 21:31:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 895 transitions. [2021-10-06 21:31:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:37,392 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:37,392 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:37,420 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 21:31:37,615 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 21:31:37,616 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 21:31:37,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:37,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1890775578, now seen corresponding path program 23 times [2021-10-06 21:31:37,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:37,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1487320421] [2021-10-06 21:31:37,618 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:31:37,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:37,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:37,619 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 21:31:37,620 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 21:31:38,466 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:31:38,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:38,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:31:38,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:38,846 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 21:31:38,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:40,065 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 21:31:40,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:40,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1487320421] [2021-10-06 21:31:40,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1487320421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:40,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:40,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:40,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812353918] [2021-10-06 21:31:40,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:40,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:40,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:40,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:40,067 INFO L87 Difference]: Start difference. First operand 270 states and 895 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 21:31:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:46,774 INFO L93 Difference]: Finished difference Result 520 states and 1365 transitions. [2021-10-06 21:31:46,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:31:46,775 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 21:31:46,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:46,778 INFO L225 Difference]: With dead ends: 520 [2021-10-06 21:31:46,778 INFO L226 Difference]: Without dead ends: 510 [2021-10-06 21:31:46,779 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 6369.8ms TimeCoverageRelationStatistics Valid=650, Invalid=2320, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:31:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-06 21:31:46,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 278. [2021-10-06 21:31:46,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.3610108303249095) internal successors, (931), 277 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 21:31:46,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 931 transitions. [2021-10-06 21:31:46,785 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 931 transitions. Word has length 17 [2021-10-06 21:31:46,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:46,786 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 931 transitions. [2021-10-06 21:31:46,786 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 21:31:46,786 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 931 transitions. [2021-10-06 21:31:46,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:46,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:46,787 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:46,803 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 21:31:46,999 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 21:31:47,000 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 21:31:47,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:47,001 INFO L82 PathProgramCache]: Analyzing trace with hash 460595410, now seen corresponding path program 22 times [2021-10-06 21:31:47,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:47,001 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850198836] [2021-10-06 21:31:47,002 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:31:47,002 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:47,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:47,003 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 21:31:47,004 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 21:31:47,807 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:31:47,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:47,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:31:47,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:48,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:48,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:31:49,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:49,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850198836] [2021-10-06 21:31:49,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850198836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:49,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:49,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:49,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058917410] [2021-10-06 21:31:49,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:49,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:49,256 INFO L87 Difference]: Start difference. First operand 278 states and 931 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 21:31:56,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:31:56,448 INFO L93 Difference]: Finished difference Result 527 states and 1359 transitions. [2021-10-06 21:31:56,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:31:56,449 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 21:31:56,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:31:56,452 INFO L225 Difference]: With dead ends: 527 [2021-10-06 21:31:56,452 INFO L226 Difference]: Without dead ends: 512 [2021-10-06 21:31:56,452 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 936 ImplicationChecksByTransitivity, 6953.6ms TimeCoverageRelationStatistics Valid=790, Invalid=2870, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:31:56,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-06 21:31:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 278. [2021-10-06 21:31:56,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 277 states have (on average 3.3610108303249095) internal successors, (931), 277 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 21:31:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 931 transitions. [2021-10-06 21:31:56,461 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 931 transitions. Word has length 17 [2021-10-06 21:31:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:31:56,462 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 931 transitions. [2021-10-06 21:31:56,462 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 21:31:56,462 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 931 transitions. [2021-10-06 21:31:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:31:56,463 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:31:56,463 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:31:56,478 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 21:31:56,676 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 21:31:56,677 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 21:31:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:31:56,677 INFO L82 PathProgramCache]: Analyzing trace with hash 1088058148, now seen corresponding path program 24 times [2021-10-06 21:31:56,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:31:56,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [787371361] [2021-10-06 21:31:56,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:31:56,678 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:31:56,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:31:56,680 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 21:31:56,681 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 21:31:57,606 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:31:57,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:31:57,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:31:57,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:31:58,000 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 21:31:58,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:31:59,076 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 21:31:59,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:31:59,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [787371361] [2021-10-06 21:31:59,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [787371361] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:31:59,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:31:59,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:31:59,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936154893] [2021-10-06 21:31:59,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:31:59,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:31:59,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:31:59,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:31:59,078 INFO L87 Difference]: Start difference. First operand 278 states and 931 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 21:32:07,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:07,964 INFO L93 Difference]: Finished difference Result 607 states and 1542 transitions. [2021-10-06 21:32:07,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:32:07,965 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 21:32:07,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:07,968 INFO L225 Difference]: With dead ends: 607 [2021-10-06 21:32:07,968 INFO L226 Difference]: Without dead ends: 592 [2021-10-06 21:32:07,968 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1105 ImplicationChecksByTransitivity, 8559.8ms TimeCoverageRelationStatistics Valid=885, Invalid=3275, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:32:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-06 21:32:07,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 290. [2021-10-06 21:32:07,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.4083044982698962) internal successors, (985), 289 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 985 transitions. [2021-10-06 21:32:07,976 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 985 transitions. Word has length 17 [2021-10-06 21:32:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:07,976 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 985 transitions. [2021-10-06 21:32:07,976 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 21:32:07,976 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 985 transitions. [2021-10-06 21:32:07,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:07,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:07,977 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:07,990 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 21:32:08,177 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 21:32:08,178 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 21:32:08,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:08,179 INFO L82 PathProgramCache]: Analyzing trace with hash 1919199720, now seen corresponding path program 25 times [2021-10-06 21:32:08,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:08,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [433155896] [2021-10-06 21:32:08,180 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:32:08,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:08,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:08,181 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 21:32:08,187 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 21:32:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:32:09,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:32:09,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:09,427 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 21:32:09,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:10,378 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 21:32:10,379 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:10,379 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [433155896] [2021-10-06 21:32:10,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [433155896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:10,379 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:10,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:10,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749983474] [2021-10-06 21:32:10,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:10,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:10,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:10,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:10,381 INFO L87 Difference]: Start difference. First operand 290 states and 985 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:32:15,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:15,956 INFO L93 Difference]: Finished difference Result 570 states and 1496 transitions. [2021-10-06 21:32:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:32:15,957 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 21:32:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:15,961 INFO L225 Difference]: With dead ends: 570 [2021-10-06 21:32:15,961 INFO L226 Difference]: Without dead ends: 548 [2021-10-06 21:32:15,962 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 5373.8ms TimeCoverageRelationStatistics Valid=554, Invalid=2202, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:32:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-10-06 21:32:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 290. [2021-10-06 21:32:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.4013840830449826) internal successors, (983), 289 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 21:32:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 983 transitions. [2021-10-06 21:32:15,970 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 983 transitions. Word has length 17 [2021-10-06 21:32:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:15,970 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 983 transitions. [2021-10-06 21:32:15,970 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 21:32:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 983 transitions. [2021-10-06 21:32:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:15,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:15,971 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:15,985 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 21:32:16,174 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 21:32:16,174 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 21:32:16,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:16,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1426506220, now seen corresponding path program 23 times [2021-10-06 21:32:16,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:16,176 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178530701] [2021-10-06 21:32:16,176 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:16,176 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:16,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:16,177 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 21:32:16,178 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 21:32:17,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:32:17,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:17,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:32:17,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:17,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:18,360 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:18,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:18,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178530701] [2021-10-06 21:32:18,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178530701] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:18,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:18,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:18,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573232002] [2021-10-06 21:32:18,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:18,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:18,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:18,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:18,363 INFO L87 Difference]: Start difference. First operand 290 states and 983 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 21:32:24,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:24,855 INFO L93 Difference]: Finished difference Result 496 states and 1337 transitions. [2021-10-06 21:32:24,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:32:24,856 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 21:32:24,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:24,859 INFO L225 Difference]: With dead ends: 496 [2021-10-06 21:32:24,859 INFO L226 Difference]: Without dead ends: 476 [2021-10-06 21:32:24,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 5982.3ms TimeCoverageRelationStatistics Valid=674, Invalid=2406, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:32:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-10-06 21:32:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 290. [2021-10-06 21:32:24,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 3.4013840830449826) internal successors, (983), 289 states have internal predecessors, (983), 0 states have call successors, (0), 0 states 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 21:32:24,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 983 transitions. [2021-10-06 21:32:24,867 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 983 transitions. Word has length 17 [2021-10-06 21:32:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:24,867 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 983 transitions. [2021-10-06 21:32:24,867 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 21:32:24,867 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 983 transitions. [2021-10-06 21:32:24,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:24,868 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:24,868 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:24,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:25,069 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 21:32:25,069 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 21:32:25,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:25,070 INFO L82 PathProgramCache]: Analyzing trace with hash -33121624, now seen corresponding path program 26 times [2021-10-06 21:32:25,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:25,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362240460] [2021-10-06 21:32:25,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:32:25,071 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:25,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:25,072 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 21:32:25,073 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 21:32:26,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:26,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:26,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:32:26,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:26,481 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 21:32:26,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:27,346 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 21:32:27,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:27,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362240460] [2021-10-06 21:32:27,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362240460] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:27,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:27,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:27,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392353243] [2021-10-06 21:32:27,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:27,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:27,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:27,348 INFO L87 Difference]: Start difference. First operand 290 states and 983 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 21:32:35,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:35,551 INFO L93 Difference]: Finished difference Result 682 states and 1725 transitions. [2021-10-06 21:32:35,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-10-06 21:32:35,552 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 21:32:35,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:35,561 INFO L225 Difference]: With dead ends: 682 [2021-10-06 21:32:35,561 INFO L226 Difference]: Without dead ends: 660 [2021-10-06 21:32:35,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 7911.4ms TimeCoverageRelationStatistics Valid=922, Invalid=3634, Unknown=0, NotChecked=0, Total=4556 [2021-10-06 21:32:35,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-10-06 21:32:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 318. [2021-10-06 21:32:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 3.3186119873817033) internal successors, (1052), 317 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 21:32:35,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 1052 transitions. [2021-10-06 21:32:35,574 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 1052 transitions. Word has length 17 [2021-10-06 21:32:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:35,574 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 1052 transitions. [2021-10-06 21:32:35,574 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 21:32:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 1052 transitions. [2021-10-06 21:32:35,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:35,575 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:35,575 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:35,590 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 21:32:35,781 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 21:32:35,782 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 21:32:35,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1960521860, now seen corresponding path program 27 times [2021-10-06 21:32:35,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:35,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [943888492] [2021-10-06 21:32:35,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:32:35,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:35,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:35,785 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 21:32:35,787 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 21:32:36,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:32:36,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:36,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:32:36,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:37,136 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 21:32:37,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:38,223 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 21:32:38,224 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:38,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [943888492] [2021-10-06 21:32:38,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [943888492] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:38,224 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:38,224 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:38,224 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518649750] [2021-10-06 21:32:38,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:38,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:38,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:38,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:38,225 INFO L87 Difference]: Start difference. First operand 318 states and 1052 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 21:32:45,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:45,067 INFO L93 Difference]: Finished difference Result 700 states and 1800 transitions. [2021-10-06 21:32:45,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-10-06 21:32:45,069 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 21:32:45,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:45,072 INFO L225 Difference]: With dead ends: 700 [2021-10-06 21:32:45,072 INFO L226 Difference]: Without dead ends: 680 [2021-10-06 21:32:45,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 6748.5ms TimeCoverageRelationStatistics Valid=666, Invalid=2414, Unknown=0, NotChecked=0, Total=3080 [2021-10-06 21:32:45,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2021-10-06 21:32:45,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 326. [2021-10-06 21:32:45,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.316923076923077) internal successors, (1078), 325 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states 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 21:32:45,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1078 transitions. [2021-10-06 21:32:45,083 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1078 transitions. Word has length 17 [2021-10-06 21:32:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:45,083 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 1078 transitions. [2021-10-06 21:32:45,083 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 21:32:45,083 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1078 transitions. [2021-10-06 21:32:45,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:45,084 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:45,085 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:45,101 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 21:32:45,295 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 21:32:45,296 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 21:32:45,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:45,297 INFO L82 PathProgramCache]: Analyzing trace with hash 2024120840, now seen corresponding path program 28 times [2021-10-06 21:32:45,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:45,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647960774] [2021-10-06 21:32:45,298 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:32:45,298 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:45,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:45,300 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 21:32:45,323 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 21:32:46,285 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:32:46,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:46,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:32:46,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:46,652 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 21:32:46,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:47,500 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 21:32:47,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:47,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647960774] [2021-10-06 21:32:47,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647960774] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:47,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:47,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:47,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714307291] [2021-10-06 21:32:47,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:47,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:47,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:47,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:47,502 INFO L87 Difference]: Start difference. First operand 326 states and 1078 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 21:32:53,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:32:53,473 INFO L93 Difference]: Finished difference Result 764 states and 1954 transitions. [2021-10-06 21:32:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:32:53,474 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 21:32:53,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:32:53,476 INFO L225 Difference]: With dead ends: 764 [2021-10-06 21:32:53,477 INFO L226 Difference]: Without dead ends: 744 [2021-10-06 21:32:53,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1019 ImplicationChecksByTransitivity, 5637.5ms TimeCoverageRelationStatistics Valid=652, Invalid=3130, Unknown=0, NotChecked=0, Total=3782 [2021-10-06 21:32:53,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2021-10-06 21:32:53,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 328. [2021-10-06 21:32:53,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 3.324159021406728) internal successors, (1087), 327 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 21:32:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 1087 transitions. [2021-10-06 21:32:53,489 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 1087 transitions. Word has length 17 [2021-10-06 21:32:53,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:32:53,489 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 1087 transitions. [2021-10-06 21:32:53,489 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 21:32:53,489 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 1087 transitions. [2021-10-06 21:32:53,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-06 21:32:53,490 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:32:53,490 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:32:53,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Forceful destruction successful, exit code 0 [2021-10-06 21:32:53,690 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 21:32:53,693 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 21:32:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:32:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 223108566, now seen corresponding path program 29 times [2021-10-06 21:32:53,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:32:53,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321210686] [2021-10-06 21:32:53,698 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:32:53,698 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:32:53,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:32:53,699 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 21:32:53,702 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 21:32:54,670 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:32:54,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:32:54,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-06 21:32:54,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:32:55,061 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 21:32:55,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:32:56,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:32:56,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:32:56,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321210686] [2021-10-06 21:32:56,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321210686] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:32:56,240 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:32:56,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-06 21:32:56,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362828639] [2021-10-06 21:32:56,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:32:56,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:32:56,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:32:56,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:32:56,241 INFO L87 Difference]: Start difference. First operand 328 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 21:33:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:02,159 INFO L93 Difference]: Finished difference Result 583 states and 1563 transitions. [2021-10-06 21:33:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-10-06 21:33:02,160 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-06 21:33:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:02,163 INFO L225 Difference]: With dead ends: 583 [2021-10-06 21:33:02,163 INFO L226 Difference]: Without dead ends: 550 [2021-10-06 21:33:02,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 5793.6ms TimeCoverageRelationStatistics Valid=545, Invalid=1807, Unknown=0, NotChecked=0, Total=2352 [2021-10-06 21:33:02,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-10-06 21:33:02,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 310. [2021-10-06 21:33:02,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.407766990291262) internal successors, (1053), 309 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:02,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 1053 transitions. [2021-10-06 21:33:02,173 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 1053 transitions. Word has length 17 [2021-10-06 21:33:02,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:02,173 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 1053 transitions. [2021-10-06 21:33:02,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:02,173 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 1053 transitions. [2021-10-06 21:33:02,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:33:02,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:02,174 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:02,187 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 21:33:02,375 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 21:33:02,375 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 21:33:02,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:02,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1979753055, now seen corresponding path program 30 times [2021-10-06 21:33:02,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:02,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022765886] [2021-10-06 21:33:02,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:33:02,377 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:02,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:02,378 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 21:33:02,380 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 21:33:03,422 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:33:03,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:03,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:33:03,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:03,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:05,268 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:05,268 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:05,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022765886] [2021-10-06 21:33:05,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022765886] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:05,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:05,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:33:05,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306606042] [2021-10-06 21:33:05,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:05,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:05,271 INFO L87 Difference]: Start difference. First operand 310 states and 1053 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:15,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:15,426 INFO L93 Difference]: Finished difference Result 579 states and 1611 transitions. [2021-10-06 21:33:15,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-06 21:33:15,427 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:33:15,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:15,433 INFO L225 Difference]: With dead ends: 579 [2021-10-06 21:33:15,433 INFO L226 Difference]: Without dead ends: 564 [2021-10-06 21:33:15,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 9921.9ms TimeCoverageRelationStatistics Valid=720, Invalid=2472, Unknown=0, NotChecked=0, Total=3192 [2021-10-06 21:33:15,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-10-06 21:33:15,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 334. [2021-10-06 21:33:15,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 3.4864864864864864) internal successors, (1161), 333 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states 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 21:33:15,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 1161 transitions. [2021-10-06 21:33:15,444 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 1161 transitions. Word has length 18 [2021-10-06 21:33:15,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:15,445 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 1161 transitions. [2021-10-06 21:33:15,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:15,445 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 1161 transitions. [2021-10-06 21:33:15,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:33:15,446 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:15,446 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:15,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-06 21:33:15,648 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 21:33:15,649 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 21:33:15,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:15,650 INFO L82 PathProgramCache]: Analyzing trace with hash 885034073, now seen corresponding path program 24 times [2021-10-06 21:33:15,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:15,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828029083] [2021-10-06 21:33:15,651 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:33:15,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:15,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:15,653 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 21:33:15,653 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 21:33:16,715 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:33:16,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:16,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:33:16,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:17,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:18,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:18,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828029083] [2021-10-06 21:33:18,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828029083] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:18,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:18,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:33:18,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688852798] [2021-10-06 21:33:18,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:18,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:18,452 INFO L87 Difference]: Start difference. First operand 334 states and 1161 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:25,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:25,206 INFO L93 Difference]: Finished difference Result 536 states and 1513 transitions. [2021-10-06 21:33:25,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:33:25,207 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:33:25,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:25,209 INFO L225 Difference]: With dead ends: 536 [2021-10-06 21:33:25,209 INFO L226 Difference]: Without dead ends: 526 [2021-10-06 21:33:25,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 6682.8ms TimeCoverageRelationStatistics Valid=628, Invalid=2128, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:33:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-10-06 21:33:25,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 330. [2021-10-06 21:33:25,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 3.474164133738602) internal successors, (1143), 329 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:25,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 1143 transitions. [2021-10-06 21:33:25,217 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 1143 transitions. Word has length 18 [2021-10-06 21:33:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:25,217 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 1143 transitions. [2021-10-06 21:33:25,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 1143 transitions. [2021-10-06 21:33:25,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:33:25,218 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:25,218 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:25,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-06 21:33:25,418 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 21:33:25,419 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 21:33:25,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:25,420 INFO L82 PathProgramCache]: Analyzing trace with hash 476145711, now seen corresponding path program 31 times [2021-10-06 21:33:25,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:25,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064760874] [2021-10-06 21:33:25,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:33:25,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:25,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:25,422 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 21:33:25,424 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 21:33:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:26,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:33:26,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:26,914 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:26,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:28,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:28,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064760874] [2021-10-06 21:33:28,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064760874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:28,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:28,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:33:28,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406237584] [2021-10-06 21:33:28,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:28,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:28,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:28,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:28,311 INFO L87 Difference]: Start difference. First operand 330 states and 1143 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:40,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:40,842 INFO L93 Difference]: Finished difference Result 664 states and 1787 transitions. [2021-10-06 21:33:40,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:33:40,843 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:33:40,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:40,845 INFO L225 Difference]: With dead ends: 664 [2021-10-06 21:33:40,845 INFO L226 Difference]: Without dead ends: 632 [2021-10-06 21:33:40,846 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 12257.4ms TimeCoverageRelationStatistics Valid=936, Invalid=3096, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:33:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-06 21:33:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 352. [2021-10-06 21:33:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 351 states have (on average 3.5213675213675213) internal successors, (1236), 351 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states 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 21:33:40,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 1236 transitions. [2021-10-06 21:33:40,855 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 1236 transitions. Word has length 18 [2021-10-06 21:33:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:40,855 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 1236 transitions. [2021-10-06 21:33:40,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:40,855 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 1236 transitions. [2021-10-06 21:33:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:33:40,856 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:40,856 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:40,870 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 21:33:41,056 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 21:33:41,057 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 21:33:41,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:41,058 INFO L82 PathProgramCache]: Analyzing trace with hash 539744691, now seen corresponding path program 32 times [2021-10-06 21:33:41,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:41,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6650260] [2021-10-06 21:33:41,060 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:33:41,060 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:41,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:41,061 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 21:33:41,066 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 21:33:42,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:33:42,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:33:42,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:33:42,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:42,655 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:42,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:44,118 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:44,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6650260] [2021-10-06 21:33:44,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6650260] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:44,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:44,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:33:44,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719874670] [2021-10-06 21:33:44,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:44,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:44,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:44,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:44,119 INFO L87 Difference]: Start difference. First operand 352 states and 1236 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:54,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:33:54,166 INFO L93 Difference]: Finished difference Result 624 states and 1720 transitions. [2021-10-06 21:33:54,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:33:54,167 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:33:54,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:33:54,169 INFO L225 Difference]: With dead ends: 624 [2021-10-06 21:33:54,169 INFO L226 Difference]: Without dead ends: 604 [2021-10-06 21:33:54,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 590 ImplicationChecksByTransitivity, 10065.0ms TimeCoverageRelationStatistics Valid=709, Invalid=2047, Unknown=0, NotChecked=0, Total=2756 [2021-10-06 21:33:54,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-06 21:33:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 346. [2021-10-06 21:33:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 3.5043478260869567) internal successors, (1209), 345 states have internal predecessors, (1209), 0 states have call successors, (0), 0 states 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 21:33:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 1209 transitions. [2021-10-06 21:33:54,178 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 1209 transitions. Word has length 18 [2021-10-06 21:33:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:33:54,178 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 1209 transitions. [2021-10-06 21:33:54,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:33:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 1209 transitions. [2021-10-06 21:33:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:33:54,179 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:33:54,179 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:33:54,193 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 21:33:54,379 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 21:33:54,380 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 21:33:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:33:54,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2038205901, now seen corresponding path program 25 times [2021-10-06 21:33:54,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:33:54,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267921269] [2021-10-06 21:33:54,382 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:33:54,382 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:33:54,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:33:54,384 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 21:33:54,400 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 21:33:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:33:55,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:33:55,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:33:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:55,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:33:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:33:56,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:33:56,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267921269] [2021-10-06 21:33:56,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267921269] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:33:56,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:33:56,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:33:56,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960640633] [2021-10-06 21:33:56,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:33:56,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:33:56,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:33:56,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:33:56,948 INFO L87 Difference]: Start difference. First operand 346 states and 1209 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:01,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:01,160 INFO L93 Difference]: Finished difference Result 461 states and 1388 transitions. [2021-10-06 21:34:01,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-06 21:34:01,161 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:34:01,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:01,162 INFO L225 Difference]: With dead ends: 461 [2021-10-06 21:34:01,162 INFO L226 Difference]: Without dead ends: 436 [2021-10-06 21:34:01,163 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 4331.5ms TimeCoverageRelationStatistics Valid=406, Invalid=1574, Unknown=0, NotChecked=0, Total=1980 [2021-10-06 21:34:01,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-06 21:34:01,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 358. [2021-10-06 21:34:01,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.436974789915966) internal successors, (1227), 357 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states 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 21:34:01,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1227 transitions. [2021-10-06 21:34:01,169 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1227 transitions. Word has length 18 [2021-10-06 21:34:01,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:01,170 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1227 transitions. [2021-10-06 21:34:01,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:01,170 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1227 transitions. [2021-10-06 21:34:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:34:01,171 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:01,171 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:01,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2021-10-06 21:34:01,372 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 21:34:01,373 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 21:34:01,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:01,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1531100727, now seen corresponding path program 33 times [2021-10-06 21:34:01,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:01,374 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268044333] [2021-10-06 21:34:01,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:34:01,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:01,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:01,376 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 21:34:01,377 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 21:34:02,527 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:34:02,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:02,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:34:02,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:02,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:04,181 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:04,181 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:04,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268044333] [2021-10-06 21:34:04,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268044333] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:04,181 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:04,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:34:04,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682090762] [2021-10-06 21:34:04,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:34:04,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:04,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:34:04,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:34:04,183 INFO L87 Difference]: Start difference. First operand 358 states and 1227 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:20,666 INFO L93 Difference]: Finished difference Result 798 states and 2021 transitions. [2021-10-06 21:34:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-06 21:34:20,667 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:34:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:20,669 INFO L225 Difference]: With dead ends: 798 [2021-10-06 21:34:20,669 INFO L226 Difference]: Without dead ends: 770 [2021-10-06 21:34:20,670 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2125 ImplicationChecksByTransitivity, 15827.8ms TimeCoverageRelationStatistics Valid=1554, Invalid=5418, Unknown=0, NotChecked=0, Total=6972 [2021-10-06 21:34:20,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2021-10-06 21:34:20,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 380. [2021-10-06 21:34:20,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.4828496042216357) internal successors, (1320), 379 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states 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 21:34:20,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1320 transitions. [2021-10-06 21:34:20,685 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1320 transitions. Word has length 18 [2021-10-06 21:34:20,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:20,685 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 1320 transitions. [2021-10-06 21:34:20,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:20,685 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1320 transitions. [2021-10-06 21:34:20,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:34:20,686 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:20,686 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:20,700 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 21:34:20,887 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 21:34:20,887 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 21:34:20,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:20,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1594699707, now seen corresponding path program 34 times [2021-10-06 21:34:20,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:20,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [208992108] [2021-10-06 21:34:20,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:34:20,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:20,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:20,890 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 21:34:20,891 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 21:34:21,956 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:34:21,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:21,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:34:21,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:22,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:23,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:23,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [208992108] [2021-10-06 21:34:23,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [208992108] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:23,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:23,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:34:23,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313092362] [2021-10-06 21:34:23,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:34:23,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:23,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:34:23,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:34:23,773 INFO L87 Difference]: Start difference. First operand 380 states and 1320 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:36,387 INFO L93 Difference]: Finished difference Result 749 states and 1942 transitions. [2021-10-06 21:34:36,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-10-06 21:34:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:34:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:36,391 INFO L225 Difference]: With dead ends: 749 [2021-10-06 21:34:36,391 INFO L226 Difference]: Without dead ends: 734 [2021-10-06 21:34:36,392 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1421 ImplicationChecksByTransitivity, 12033.0ms TimeCoverageRelationStatistics Valid=1155, Invalid=3957, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:34:36,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-10-06 21:34:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 374. [2021-10-06 21:34:36,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4664879356568363) internal successors, (1293), 373 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states 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 21:34:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1293 transitions. [2021-10-06 21:34:36,402 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1293 transitions. Word has length 18 [2021-10-06 21:34:36,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:36,403 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1293 transitions. [2021-10-06 21:34:36,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:36,403 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1293 transitions. [2021-10-06 21:34:36,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:34:36,404 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:36,404 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:36,419 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 21:34:36,604 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 21:34:36,605 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 21:34:36,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:36,605 INFO L82 PathProgramCache]: Analyzing trace with hash -993450335, now seen corresponding path program 35 times [2021-10-06 21:34:36,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:36,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254454437] [2021-10-06 21:34:36,606 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:34:36,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:36,608 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 21:34:36,609 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 21:34:37,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-06 21:34:37,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:37,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-06 21:34:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:38,171 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:38,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:39,632 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:39,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254454437] [2021-10-06 21:34:39,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254454437] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:39,633 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:39,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:34:39,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716798648] [2021-10-06 21:34:39,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:34:39,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:39,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:34:39,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:34:39,634 INFO L87 Difference]: Start difference. First operand 374 states and 1293 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:34:45,645 INFO L93 Difference]: Finished difference Result 552 states and 1596 transitions. [2021-10-06 21:34:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:34:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:34:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:34:45,648 INFO L225 Difference]: With dead ends: 552 [2021-10-06 21:34:45,648 INFO L226 Difference]: Without dead ends: 542 [2021-10-06 21:34:45,648 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 446 ImplicationChecksByTransitivity, 6109.5ms TimeCoverageRelationStatistics Valid=408, Invalid=1662, Unknown=0, NotChecked=0, Total=2070 [2021-10-06 21:34:45,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-06 21:34:45,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 374. [2021-10-06 21:34:45,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 373 states have (on average 3.4664879356568363) internal successors, (1293), 373 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states 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 21:34:45,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 1293 transitions. [2021-10-06 21:34:45,655 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 1293 transitions. Word has length 18 [2021-10-06 21:34:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:34:45,655 INFO L470 AbstractCegarLoop]: Abstraction has 374 states and 1293 transitions. [2021-10-06 21:34:45,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:34:45,656 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 1293 transitions. [2021-10-06 21:34:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:34:45,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:34:45,657 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:34:45,670 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 21:34:45,857 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 21:34:45,857 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 21:34:45,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:34:45,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1822618479, now seen corresponding path program 36 times [2021-10-06 21:34:45,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:34:45,859 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479210576] [2021-10-06 21:34:45,859 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:34:45,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:34:45,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:34:45,861 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 21:34:45,862 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 21:34:47,140 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:34:47,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:34:47,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:34:47,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:34:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:47,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:34:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:34:49,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:34:49,076 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479210576] [2021-10-06 21:34:49,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479210576] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:34:49,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:34:49,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:34:49,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443168145] [2021-10-06 21:34:49,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:34:49,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:34:49,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:34:49,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:34:49,078 INFO L87 Difference]: Start difference. First operand 374 states and 1293 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:00,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:00,051 INFO L93 Difference]: Finished difference Result 705 states and 1952 transitions. [2021-10-06 21:35:00,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:35:00,053 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:35:00,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:00,055 INFO L225 Difference]: With dead ends: 705 [2021-10-06 21:35:00,055 INFO L226 Difference]: Without dead ends: 690 [2021-10-06 21:35:00,055 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 10667.4ms TimeCoverageRelationStatistics Valid=735, Invalid=2571, Unknown=0, NotChecked=0, Total=3306 [2021-10-06 21:35:00,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-06 21:35:00,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 396. [2021-10-06 21:35:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.5240506329113925) internal successors, (1392), 395 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 21:35:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1392 transitions. [2021-10-06 21:35:00,064 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1392 transitions. Word has length 18 [2021-10-06 21:35:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:00,065 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 1392 transitions. [2021-10-06 21:35:00,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:00,065 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1392 transitions. [2021-10-06 21:35:00,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:35:00,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:00,066 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:00,080 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 21:35:00,267 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 21:35:00,267 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 21:35:00,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:00,268 INFO L82 PathProgramCache]: Analyzing trace with hash 392438311, now seen corresponding path program 26 times [2021-10-06 21:35:00,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:00,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248559192] [2021-10-06 21:35:00,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:35:00,269 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:00,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:00,271 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 21:35:00,272 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 21:35:01,505 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:35:01,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:01,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:35:01,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:01,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:03,425 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:03,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:03,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248559192] [2021-10-06 21:35:03,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248559192] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:03,425 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:03,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:35:03,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594519885] [2021-10-06 21:35:03,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:03,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:03,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:03,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:03,426 INFO L87 Difference]: Start difference. First operand 396 states and 1392 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:11,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:11,265 INFO L93 Difference]: Finished difference Result 612 states and 1770 transitions. [2021-10-06 21:35:11,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:35:11,266 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:35:11,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:11,268 INFO L225 Difference]: With dead ends: 612 [2021-10-06 21:35:11,268 INFO L226 Difference]: Without dead ends: 602 [2021-10-06 21:35:11,269 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 661 ImplicationChecksByTransitivity, 7651.1ms TimeCoverageRelationStatistics Valid=709, Invalid=2261, Unknown=0, NotChecked=0, Total=2970 [2021-10-06 21:35:11,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-10-06 21:35:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 382. [2021-10-06 21:35:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 3.4881889763779528) internal successors, (1329), 381 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states 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 21:35:11,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1329 transitions. [2021-10-06 21:35:11,279 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1329 transitions. Word has length 18 [2021-10-06 21:35:11,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:11,279 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1329 transitions. [2021-10-06 21:35:11,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:11,280 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1329 transitions. [2021-10-06 21:35:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:35:11,280 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:11,281 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:11,300 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 21:35:11,481 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 21:35:11,482 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 21:35:11,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:11,482 INFO L82 PathProgramCache]: Analyzing trace with hash 47148929, now seen corresponding path program 37 times [2021-10-06 21:35:11,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:11,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939374756] [2021-10-06 21:35:11,483 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:35:11,483 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:11,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:11,485 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 21:35:11,485 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 21:35:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:35:12,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:35:12,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:13,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:13,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:14,500 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:14,500 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939374756] [2021-10-06 21:35:14,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939374756] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:14,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:14,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:35:14,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802256663] [2021-10-06 21:35:14,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:14,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:14,502 INFO L87 Difference]: Start difference. First operand 382 states and 1329 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:27,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:27,264 INFO L93 Difference]: Finished difference Result 760 states and 2033 transitions. [2021-10-06 21:35:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:35:27,265 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:35:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:27,267 INFO L225 Difference]: With dead ends: 760 [2021-10-06 21:35:27,271 INFO L226 Difference]: Without dead ends: 736 [2021-10-06 21:35:27,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1048 ImplicationChecksByTransitivity, 12302.1ms TimeCoverageRelationStatistics Valid=1013, Invalid=3147, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:35:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-10-06 21:35:27,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 410. [2021-10-06 21:35:27,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.4938875305623474) internal successors, (1429), 409 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states 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 21:35:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1429 transitions. [2021-10-06 21:35:27,282 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1429 transitions. Word has length 18 [2021-10-06 21:35:27,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:27,282 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1429 transitions. [2021-10-06 21:35:27,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1429 transitions. [2021-10-06 21:35:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:35:27,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:27,284 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:27,299 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 21:35:27,484 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 21:35:27,484 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 21:35:27,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:27,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1764165633, now seen corresponding path program 27 times [2021-10-06 21:35:27,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:27,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852343344] [2021-10-06 21:35:27,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:27,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:27,488 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 21:35:27,489 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 21:35:28,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:35:28,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:28,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:35:28,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:29,229 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:29,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:30,613 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:30,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852343344] [2021-10-06 21:35:30,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852343344] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:30,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:30,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:35:30,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127431920] [2021-10-06 21:35:30,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:30,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:30,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:30,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:30,615 INFO L87 Difference]: Start difference. First operand 410 states and 1429 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:36,522 INFO L93 Difference]: Finished difference Result 530 states and 1621 transitions. [2021-10-06 21:35:36,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-06 21:35:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:35:36,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:36,524 INFO L225 Difference]: With dead ends: 530 [2021-10-06 21:35:36,524 INFO L226 Difference]: Without dead ends: 510 [2021-10-06 21:35:36,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 6126.4ms TimeCoverageRelationStatistics Valid=462, Invalid=1430, Unknown=0, NotChecked=0, Total=1892 [2021-10-06 21:35:36,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-10-06 21:35:36,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 410. [2021-10-06 21:35:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.4938875305623474) internal successors, (1429), 409 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states 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 21:35:36,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1429 transitions. [2021-10-06 21:35:36,533 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1429 transitions. Word has length 18 [2021-10-06 21:35:36,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:36,533 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 1429 transitions. [2021-10-06 21:35:36,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:36,533 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1429 transitions. [2021-10-06 21:35:36,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:35:36,535 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:36,535 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:36,554 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 21:35:36,750 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 21:35:36,750 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 21:35:36,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:36,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1038504965, now seen corresponding path program 38 times [2021-10-06 21:35:36,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:36,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [772548589] [2021-10-06 21:35:36,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:35:36,752 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:36,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:36,753 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 21:35:36,788 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 21:35:38,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:35:38,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:38,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:35:38,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:38,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:40,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:40,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [772548589] [2021-10-06 21:35:40,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [772548589] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:40,329 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:40,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:35:40,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591620715] [2021-10-06 21:35:40,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:40,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:40,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:40,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:40,330 INFO L87 Difference]: Start difference. First operand 410 states and 1429 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:56,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:35:56,078 INFO L93 Difference]: Finished difference Result 859 states and 2241 transitions. [2021-10-06 21:35:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-10-06 21:35:56,079 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:35:56,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:35:56,081 INFO L225 Difference]: With dead ends: 859 [2021-10-06 21:35:56,082 INFO L226 Difference]: Without dead ends: 836 [2021-10-06 21:35:56,082 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 15047.1ms TimeCoverageRelationStatistics Valid=1226, Invalid=4176, Unknown=0, NotChecked=0, Total=5402 [2021-10-06 21:35:56,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-10-06 21:35:56,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 430. [2021-10-06 21:35:56,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.526806526806527) internal successors, (1513), 429 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states 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 21:35:56,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1513 transitions. [2021-10-06 21:35:56,100 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1513 transitions. Word has length 18 [2021-10-06 21:35:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:35:56,101 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1513 transitions. [2021-10-06 21:35:56,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:35:56,101 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1513 transitions. [2021-10-06 21:35:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:35:56,102 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:35:56,102 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:35:56,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-06 21:35:56,302 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 21:35:56,303 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:35:56,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:35:56,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1102103945, now seen corresponding path program 39 times [2021-10-06 21:35:56,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:35:56,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862496314] [2021-10-06 21:35:56,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:35:56,305 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:35:56,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:35:56,306 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:35:56,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-06 21:35:57,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:35:57,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:35:57,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:35:57,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:35:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:58,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:35:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:35:59,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:35:59,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862496314] [2021-10-06 21:35:59,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862496314] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:35:59,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:35:59,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:35:59,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908989287] [2021-10-06 21:35:59,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:35:59,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:35:59,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:35:59,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:35:59,384 INFO L87 Difference]: Start difference. First operand 430 states and 1513 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:13,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:13,384 INFO L93 Difference]: Finished difference Result 884 states and 2265 transitions. [2021-10-06 21:36:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-10-06 21:36:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:36:13,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:13,388 INFO L225 Difference]: With dead ends: 884 [2021-10-06 21:36:13,388 INFO L226 Difference]: Without dead ends: 864 [2021-10-06 21:36:13,389 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1794 ImplicationChecksByTransitivity, 13205.7ms TimeCoverageRelationStatistics Valid=1336, Invalid=4826, Unknown=0, NotChecked=0, Total=6162 [2021-10-06 21:36:13,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2021-10-06 21:36:13,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 408. [2021-10-06 21:36:13,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 3.4742014742014744) internal successors, (1414), 407 states have internal predecessors, (1414), 0 states have call successors, (0), 0 states 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 21:36:13,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 1414 transitions. [2021-10-06 21:36:13,405 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 1414 transitions. Word has length 18 [2021-10-06 21:36:13,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:13,405 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 1414 transitions. [2021-10-06 21:36:13,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:13,406 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 1414 transitions. [2021-10-06 21:36:13,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:36:13,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:13,407 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:13,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:13,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:13,623 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:13,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:13,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1486046097, now seen corresponding path program 40 times [2021-10-06 21:36:13,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:13,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494677050] [2021-10-06 21:36:13,625 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:36:13,625 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:13,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:13,627 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:13,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-06 21:36:14,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:36:14,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:14,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:36:14,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:15,288 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:15,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:16,750 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:16,750 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:16,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494677050] [2021-10-06 21:36:16,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494677050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:16,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:16,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:36:16,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889221049] [2021-10-06 21:36:16,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:16,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:16,752 INFO L87 Difference]: Start difference. First operand 408 states and 1414 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:24,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:24,193 INFO L93 Difference]: Finished difference Result 586 states and 1698 transitions. [2021-10-06 21:36:24,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-06 21:36:24,195 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:36:24,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:24,196 INFO L225 Difference]: With dead ends: 586 [2021-10-06 21:36:24,197 INFO L226 Difference]: Without dead ends: 576 [2021-10-06 21:36:24,197 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 605 ImplicationChecksByTransitivity, 7359.9ms TimeCoverageRelationStatistics Valid=488, Invalid=2164, Unknown=0, NotChecked=0, Total=2652 [2021-10-06 21:36:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-10-06 21:36:24,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 406. [2021-10-06 21:36:24,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.4790123456790125) internal successors, (1409), 405 states have internal predecessors, (1409), 0 states have call successors, (0), 0 states 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 21:36:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1409 transitions. [2021-10-06 21:36:24,207 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1409 transitions. Word has length 18 [2021-10-06 21:36:24,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:24,207 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 1409 transitions. [2021-10-06 21:36:24,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:24,207 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1409 transitions. [2021-10-06 21:36:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:36:24,209 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:24,209 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:24,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:24,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:24,419 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:24,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:24,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1512598631, now seen corresponding path program 28 times [2021-10-06 21:36:24,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:24,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956832275] [2021-10-06 21:36:24,421 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:36:24,421 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:24,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:24,422 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:24,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-06 21:36:25,666 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:36:25,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:25,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:36:25,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:26,072 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:26,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:27,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:27,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956832275] [2021-10-06 21:36:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956832275] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:27,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:27,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:36:27,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648484426] [2021-10-06 21:36:27,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:27,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:27,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:27,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:27,207 INFO L87 Difference]: Start difference. First operand 406 states and 1409 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:35,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:35,591 INFO L93 Difference]: Finished difference Result 754 states and 2047 transitions. [2021-10-06 21:36:35,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-10-06 21:36:35,592 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:36:35,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:35,593 INFO L225 Difference]: With dead ends: 754 [2021-10-06 21:36:35,593 INFO L226 Difference]: Without dead ends: 729 [2021-10-06 21:36:35,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 729 ImplicationChecksByTransitivity, 8028.9ms TimeCoverageRelationStatistics Valid=796, Invalid=2744, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:36:35,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-10-06 21:36:35,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 424. [2021-10-06 21:36:35,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 3.5224586288416075) internal successors, (1490), 423 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states 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 21:36:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 1490 transitions. [2021-10-06 21:36:35,603 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 1490 transitions. Word has length 18 [2021-10-06 21:36:35,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:35,603 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 1490 transitions. [2021-10-06 21:36:35,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:35,603 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 1490 transitions. [2021-10-06 21:36:35,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:36:35,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:35,604 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:35,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-06 21:36:35,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:35,805 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:35,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:35,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1448999651, now seen corresponding path program 29 times [2021-10-06 21:36:35,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:35,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570864632] [2021-10-06 21:36:35,806 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:36:35,807 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:35,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:35,808 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:35,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-06 21:36:37,075 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:36:37,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:37,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:36:37,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:37,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:38,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:38,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:38,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570864632] [2021-10-06 21:36:38,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570864632] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:38,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:38,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:36:38,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660575561] [2021-10-06 21:36:38,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:38,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:38,852 INFO L87 Difference]: Start difference. First operand 424 states and 1490 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:48,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:36:48,202 INFO L93 Difference]: Finished difference Result 738 states and 2006 transitions. [2021-10-06 21:36:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:36:48,204 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:36:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:36:48,208 INFO L225 Difference]: With dead ends: 738 [2021-10-06 21:36:48,208 INFO L226 Difference]: Without dead ends: 718 [2021-10-06 21:36:48,209 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 8967.6ms TimeCoverageRelationStatistics Valid=844, Invalid=2696, Unknown=0, NotChecked=0, Total=3540 [2021-10-06 21:36:48,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-10-06 21:36:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 414. [2021-10-06 21:36:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 3.4987893462469732) internal successors, (1445), 413 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states 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 21:36:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1445 transitions. [2021-10-06 21:36:48,223 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1445 transitions. Word has length 18 [2021-10-06 21:36:48,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:36:48,223 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1445 transitions. [2021-10-06 21:36:48,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:36:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1445 transitions. [2021-10-06 21:36:48,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:36:48,225 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:36:48,225 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:36:48,245 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-06 21:36:48,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:36:48,438 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:36:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:36:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash -995445607, now seen corresponding path program 41 times [2021-10-06 21:36:48,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:36:48,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1471609583] [2021-10-06 21:36:48,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:36:48,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:36:48,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:36:48,441 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:36:48,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-06 21:36:49,777 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:36:49,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:36:49,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-06 21:36:49,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:36:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:50,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:36:51,764 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:36:51,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:36:51,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1471609583] [2021-10-06 21:36:51,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1471609583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:36:51,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:36:51,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:36:51,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938159816] [2021-10-06 21:36:51,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:36:51,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:36:51,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:36:51,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:36:51,766 INFO L87 Difference]: Start difference. First operand 414 states and 1445 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:02,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:02,470 INFO L93 Difference]: Finished difference Result 714 states and 1985 transitions. [2021-10-06 21:37:02,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:37:02,471 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:37:02,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:02,473 INFO L225 Difference]: With dead ends: 714 [2021-10-06 21:37:02,473 INFO L226 Difference]: Without dead ends: 682 [2021-10-06 21:37:02,473 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 10389.6ms TimeCoverageRelationStatistics Valid=926, Invalid=2734, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:37:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2021-10-06 21:37:02,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 426. [2021-10-06 21:37:02,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 425 states have (on average 3.5129411764705885) internal successors, (1493), 425 states have internal predecessors, (1493), 0 states have call successors, (0), 0 states 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 21:37:02,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 1493 transitions. [2021-10-06 21:37:02,482 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 1493 transitions. Word has length 18 [2021-10-06 21:37:02,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:02,482 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 1493 transitions. [2021-10-06 21:37:02,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:02,482 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 1493 transitions. [2021-10-06 21:37:02,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:37:02,483 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:02,483 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:02,499 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:02,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:02,684 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:02,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:02,685 INFO L82 PathProgramCache]: Analyzing trace with hash -931846627, now seen corresponding path program 42 times [2021-10-06 21:37:02,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:02,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689392458] [2021-10-06 21:37:02,686 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:37:02,686 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:02,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:02,687 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:02,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-06 21:37:04,155 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:37:04,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:04,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 29 conjunts are in the unsatisfiable core [2021-10-06 21:37:04,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:04,585 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:04,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:06,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:06,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689392458] [2021-10-06 21:37:06,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689392458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:06,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:06,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:37:06,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334479688] [2021-10-06 21:37:06,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:06,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:06,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:06,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:06,054 INFO L87 Difference]: Start difference. First operand 426 states and 1493 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:19,503 INFO L93 Difference]: Finished difference Result 704 states and 1959 transitions. [2021-10-06 21:37:19,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:37:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:37:19,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:19,505 INFO L225 Difference]: With dead ends: 704 [2021-10-06 21:37:19,505 INFO L226 Difference]: Without dead ends: 684 [2021-10-06 21:37:19,506 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1250 ImplicationChecksByTransitivity, 13188.6ms TimeCoverageRelationStatistics Valid=1097, Invalid=3733, Unknown=0, NotChecked=0, Total=4830 [2021-10-06 21:37:19,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-06 21:37:19,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 420. [2021-10-06 21:37:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.4988066825775657) internal successors, (1466), 419 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states 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 21:37:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1466 transitions. [2021-10-06 21:37:19,515 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1466 transitions. Word has length 18 [2021-10-06 21:37:19,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:19,515 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1466 transitions. [2021-10-06 21:37:19,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1466 transitions. [2021-10-06 21:37:19,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:37:19,517 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:19,517 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:19,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:19,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:19,730 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:19,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:19,731 INFO L82 PathProgramCache]: Analyzing trace with hash -69404221, now seen corresponding path program 43 times [2021-10-06 21:37:19,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:19,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221980860] [2021-10-06 21:37:19,732 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:37:19,732 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:19,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:19,734 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:19,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-06 21:37:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:37:21,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:37:21,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:22,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:23,266 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:23,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:23,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221980860] [2021-10-06 21:37:23,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221980860] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:23,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:23,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:37:23,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971600016] [2021-10-06 21:37:23,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:23,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:23,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:23,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:23,268 INFO L87 Difference]: Start difference. First operand 420 states and 1466 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:33,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:33,909 INFO L93 Difference]: Finished difference Result 647 states and 1859 transitions. [2021-10-06 21:37:33,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:37:33,910 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:37:33,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:33,911 INFO L225 Difference]: With dead ends: 647 [2021-10-06 21:37:33,911 INFO L226 Difference]: Without dead ends: 632 [2021-10-06 21:37:33,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1085 ImplicationChecksByTransitivity, 10395.2ms TimeCoverageRelationStatistics Valid=786, Invalid=3374, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:37:33,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-10-06 21:37:33,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 422. [2021-10-06 21:37:33,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.503562945368171) internal successors, (1475), 421 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states 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 21:37:33,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1475 transitions. [2021-10-06 21:37:33,921 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1475 transitions. Word has length 18 [2021-10-06 21:37:33,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:33,921 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1475 transitions. [2021-10-06 21:37:33,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:33,921 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1475 transitions. [2021-10-06 21:37:33,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:37:33,922 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:33,922 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:33,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-06 21:37:34,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:34,123 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:34,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:34,124 INFO L82 PathProgramCache]: Analyzing trace with hash 785170077, now seen corresponding path program 30 times [2021-10-06 21:37:34,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:34,126 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1224989450] [2021-10-06 21:37:34,126 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:37:34,126 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:34,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:34,127 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:34,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-06 21:37:35,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-06 21:37:35,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:35,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:37:35,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:36,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:37,327 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:37,327 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1224989450] [2021-10-06 21:37:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1224989450] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:37,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:37,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:37:37,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126404851] [2021-10-06 21:37:37,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:37,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=365, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:37,329 INFO L87 Difference]: Start difference. First operand 422 states and 1475 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:41,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:41,910 INFO L93 Difference]: Finished difference Result 529 states and 1648 transitions. [2021-10-06 21:37:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-06 21:37:41,911 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:37:41,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:41,912 INFO L225 Difference]: With dead ends: 529 [2021-10-06 21:37:41,912 INFO L226 Difference]: Without dead ends: 514 [2021-10-06 21:37:41,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 4746.5ms TimeCoverageRelationStatistics Valid=395, Invalid=1411, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:37:41,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-10-06 21:37:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 422. [2021-10-06 21:37:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.503562945368171) internal successors, (1475), 421 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states 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 21:37:41,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1475 transitions. [2021-10-06 21:37:41,920 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1475 transitions. Word has length 18 [2021-10-06 21:37:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:41,920 INFO L470 AbstractCegarLoop]: Abstraction has 422 states and 1475 transitions. [2021-10-06 21:37:41,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1475 transitions. [2021-10-06 21:37:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:37:41,921 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:41,921 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:41,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:42,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:42,122 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:42,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:42,123 INFO L82 PathProgramCache]: Analyzing trace with hash -72029997, now seen corresponding path program 44 times [2021-10-06 21:37:42,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:42,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816719098] [2021-10-06 21:37:42,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:37:42,125 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:42,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:42,126 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:42,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-06 21:37:43,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:37:43,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:43,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:37:43,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:44,064 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:44,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:45,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:45,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:45,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816719098] [2021-10-06 21:37:45,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816719098] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:45,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:45,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:37:45,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34812737] [2021-10-06 21:37:45,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:45,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:45,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:45,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:45,369 INFO L87 Difference]: Start difference. First operand 422 states and 1475 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:37:54,858 INFO L93 Difference]: Finished difference Result 643 states and 1913 transitions. [2021-10-06 21:37:54,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-10-06 21:37:54,859 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:37:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:37:54,860 INFO L225 Difference]: With dead ends: 643 [2021-10-06 21:37:54,860 INFO L226 Difference]: Without dead ends: 628 [2021-10-06 21:37:54,860 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 9385.1ms TimeCoverageRelationStatistics Valid=739, Invalid=2921, Unknown=0, NotChecked=0, Total=3660 [2021-10-06 21:37:54,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-06 21:37:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 444. [2021-10-06 21:37:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.5530474040632054) internal successors, (1574), 443 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states 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 21:37:54,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1574 transitions. [2021-10-06 21:37:54,870 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1574 transitions. Word has length 18 [2021-10-06 21:37:54,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:37:54,870 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1574 transitions. [2021-10-06 21:37:54,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:37:54,870 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1574 transitions. [2021-10-06 21:37:54,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:37:54,871 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:37:54,871 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:37:54,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-06 21:37:55,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:37:55,072 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:37:55,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:37:55,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1829925643, now seen corresponding path program 45 times [2021-10-06 21:37:55,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:37:55,074 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93412036] [2021-10-06 21:37:55,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:37:55,075 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:37:55,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:37:55,076 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:37:55,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-06 21:37:56,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-06 21:37:56,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:37:56,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:37:56,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:37:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:57,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:37:58,136 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:37:58,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:37:58,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93412036] [2021-10-06 21:37:58,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93412036] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:37:58,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:37:58,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:37:58,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020060417] [2021-10-06 21:37:58,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:37:58,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:37:58,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:37:58,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:37:58,154 INFO L87 Difference]: Start difference. First operand 444 states and 1574 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:04,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:04,064 INFO L93 Difference]: Finished difference Result 607 states and 1832 transitions. [2021-10-06 21:38:04,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-06 21:38:04,065 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:38:04,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:04,066 INFO L225 Difference]: With dead ends: 607 [2021-10-06 21:38:04,066 INFO L226 Difference]: Without dead ends: 592 [2021-10-06 21:38:04,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 682 ImplicationChecksByTransitivity, 5613.2ms TimeCoverageRelationStatistics Valid=435, Invalid=2427, Unknown=0, NotChecked=0, Total=2862 [2021-10-06 21:38:04,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-06 21:38:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 444. [2021-10-06 21:38:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.5530474040632054) internal successors, (1574), 443 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states 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 21:38:04,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1574 transitions. [2021-10-06 21:38:04,076 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1574 transitions. Word has length 18 [2021-10-06 21:38:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:04,077 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1574 transitions. [2021-10-06 21:38:04,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1574 transitions. [2021-10-06 21:38:04,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:38:04,078 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:04,078 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:04,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:04,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:04,279 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:04,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:04,280 INFO L82 PathProgramCache]: Analyzing trace with hash 976235521, now seen corresponding path program 46 times [2021-10-06 21:38:04,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:04,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [90704394] [2021-10-06 21:38:04,281 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:38:04,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:04,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:04,282 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:04,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2021-10-06 21:38:05,681 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:38:05,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:05,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:38:05,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:06,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:07,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:07,229 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [90704394] [2021-10-06 21:38:07,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [90704394] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:07,229 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:07,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:38:07,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653685662] [2021-10-06 21:38:07,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:38:07,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:38:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:38:07,231 INFO L87 Difference]: Start difference. First operand 444 states and 1574 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:22,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:22,463 INFO L93 Difference]: Finished difference Result 878 states and 2346 transitions. [2021-10-06 21:38:22,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-10-06 21:38:22,464 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:38:22,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:22,466 INFO L225 Difference]: With dead ends: 878 [2021-10-06 21:38:22,466 INFO L226 Difference]: Without dead ends: 854 [2021-10-06 21:38:22,467 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2027 ImplicationChecksByTransitivity, 14461.8ms TimeCoverageRelationStatistics Valid=1355, Invalid=5451, Unknown=0, NotChecked=0, Total=6806 [2021-10-06 21:38:22,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-10-06 21:38:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 446. [2021-10-06 21:38:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.548314606741573) internal successors, (1579), 445 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states 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 21:38:22,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1579 transitions. [2021-10-06 21:38:22,477 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1579 transitions. Word has length 18 [2021-10-06 21:38:22,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:22,477 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1579 transitions. [2021-10-06 21:38:22,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:22,477 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1579 transitions. [2021-10-06 21:38:22,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:38:22,478 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:22,478 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:22,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (88)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:22,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:22,679 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:22,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:22,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1838677927, now seen corresponding path program 47 times [2021-10-06 21:38:22,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:22,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202424130] [2021-10-06 21:38:22,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:38:22,681 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:22,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:22,682 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:22,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2021-10-06 21:38:24,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:38:24,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:24,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-06 21:38:24,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:24,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:24,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:26,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:26,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:26,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202424130] [2021-10-06 21:38:26,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202424130] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:26,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:26,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:38:26,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015654198] [2021-10-06 21:38:26,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:38:26,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:26,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:38:26,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=360, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:38:26,110 INFO L87 Difference]: Start difference. First operand 446 states and 1579 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:37,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:37,646 INFO L93 Difference]: Finished difference Result 687 states and 1997 transitions. [2021-10-06 21:38:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-10-06 21:38:37,647 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:38:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:37,648 INFO L225 Difference]: With dead ends: 687 [2021-10-06 21:38:37,648 INFO L226 Difference]: Without dead ends: 672 [2021-10-06 21:38:37,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1265 ImplicationChecksByTransitivity, 11393.1ms TimeCoverageRelationStatistics Valid=1002, Invalid=3420, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:38:37,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-10-06 21:38:37,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 448. [2021-10-06 21:38:37,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.552572706935123) internal successors, (1588), 447 states have internal predecessors, (1588), 0 states have call successors, (0), 0 states 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 21:38:37,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1588 transitions. [2021-10-06 21:38:37,658 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1588 transitions. Word has length 18 [2021-10-06 21:38:37,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:37,659 INFO L470 AbstractCegarLoop]: Abstraction has 448 states and 1588 transitions. [2021-10-06 21:38:37,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:37,659 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1588 transitions. [2021-10-06 21:38:37,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:38:37,660 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:37,660 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:37,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (89)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:37,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:37,874 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:37,875 INFO L82 PathProgramCache]: Analyzing trace with hash 284718589, now seen corresponding path program 31 times [2021-10-06 21:38:37,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:37,875 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410264494] [2021-10-06 21:38:37,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:38:37,876 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:37,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:37,877 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:37,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2021-10-06 21:38:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:38:39,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:38:39,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:39,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:40,902 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:40,902 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:40,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410264494] [2021-10-06 21:38:40,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410264494] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:40,903 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:40,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:38:40,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16718388] [2021-10-06 21:38:40,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:38:40,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:40,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:38:40,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:38:40,905 INFO L87 Difference]: Start difference. First operand 448 states and 1588 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:49,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:38:49,770 INFO L93 Difference]: Finished difference Result 924 states and 2552 transitions. [2021-10-06 21:38:49,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-06 21:38:49,771 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:38:49,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:38:49,773 INFO L225 Difference]: With dead ends: 924 [2021-10-06 21:38:49,773 INFO L226 Difference]: Without dead ends: 894 [2021-10-06 21:38:49,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1135 ImplicationChecksByTransitivity, 8412.7ms TimeCoverageRelationStatistics Valid=938, Invalid=3484, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:38:49,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-10-06 21:38:49,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 470. [2021-10-06 21:38:49,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 469 states have (on average 3.5756929637526653) internal successors, (1677), 469 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states 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 21:38:49,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 1677 transitions. [2021-10-06 21:38:49,784 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 1677 transitions. Word has length 18 [2021-10-06 21:38:49,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:38:49,785 INFO L470 AbstractCegarLoop]: Abstraction has 470 states and 1677 transitions. [2021-10-06 21:38:49,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:38:49,785 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 1677 transitions. [2021-10-06 21:38:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:38:49,786 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:38:49,786 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:38:49,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2021-10-06 21:38:49,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:38:49,987 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:38:49,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:38:49,988 INFO L82 PathProgramCache]: Analyzing trace with hash 348317569, now seen corresponding path program 32 times [2021-10-06 21:38:49,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:38:49,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234509214] [2021-10-06 21:38:49,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:38:49,989 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:38:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:38:49,990 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:38:49,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2021-10-06 21:38:51,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:38:51,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:38:51,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:38:51,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:38:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:52,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:38:53,318 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:38:53,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:38:53,318 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234509214] [2021-10-06 21:38:53,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234509214] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:38:53,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:38:53,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:38:53,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194440751] [2021-10-06 21:38:53,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:38:53,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:38:53,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:38:53,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:38:53,320 INFO L87 Difference]: Start difference. First operand 470 states and 1677 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:01,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:01,571 INFO L93 Difference]: Finished difference Result 786 states and 2320 transitions. [2021-10-06 21:39:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-10-06 21:39:01,572 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:39:01,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:01,574 INFO L225 Difference]: With dead ends: 786 [2021-10-06 21:39:01,574 INFO L226 Difference]: Without dead ends: 776 [2021-10-06 21:39:01,574 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1523 ImplicationChecksByTransitivity, 7879.8ms TimeCoverageRelationStatistics Valid=1134, Invalid=3978, Unknown=0, NotChecked=0, Total=5112 [2021-10-06 21:39:01,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-10-06 21:39:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 464. [2021-10-06 21:39:01,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 464 states, 463 states have (on average 3.5637149028077753) internal successors, (1650), 463 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states 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 21:39:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 1650 transitions. [2021-10-06 21:39:01,584 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 1650 transitions. Word has length 18 [2021-10-06 21:39:01,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:01,584 INFO L470 AbstractCegarLoop]: Abstraction has 464 states and 1650 transitions. [2021-10-06 21:39:01,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:01,584 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 1650 transitions. [2021-10-06 21:39:01,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:39:01,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:01,585 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:01,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:01,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:01,786 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:01,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:01,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1654027153, now seen corresponding path program 48 times [2021-10-06 21:39:01,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:01,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1134653647] [2021-10-06 21:39:01,788 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:39:01,788 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:01,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:01,789 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:01,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2021-10-06 21:39:03,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-06 21:39:03,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:03,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:39:03,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:03,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:05,024 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:05,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:05,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1134653647] [2021-10-06 21:39:05,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1134653647] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:05,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:05,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:39:05,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125184797] [2021-10-06 21:39:05,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:39:05,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:05,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:39:05,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:39:05,026 INFO L87 Difference]: Start difference. First operand 464 states and 1650 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:12,401 INFO L93 Difference]: Finished difference Result 869 states and 2491 transitions. [2021-10-06 21:39:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:39:12,402 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:39:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:12,404 INFO L225 Difference]: With dead ends: 869 [2021-10-06 21:39:12,404 INFO L226 Difference]: Without dead ends: 854 [2021-10-06 21:39:12,404 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1128 ImplicationChecksByTransitivity, 7055.9ms TimeCoverageRelationStatistics Valid=780, Invalid=3380, Unknown=0, NotChecked=0, Total=4160 [2021-10-06 21:39:12,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-10-06 21:39:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 466. [2021-10-06 21:39:12,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.567741935483871) internal successors, (1659), 465 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states 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 21:39:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1659 transitions. [2021-10-06 21:39:12,414 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1659 transitions. Word has length 18 [2021-10-06 21:39:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:12,414 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 1659 transitions. [2021-10-06 21:39:12,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1659 transitions. [2021-10-06 21:39:12,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:39:12,416 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:12,416 INFO L512 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:12,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (92)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:12,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:12,617 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:12,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:12,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1210759975, now seen corresponding path program 33 times [2021-10-06 21:39:12,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:12,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [352959941] [2021-10-06 21:39:12,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:39:12,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:12,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:12,620 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:12,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2021-10-06 21:39:14,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:39:14,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:14,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:39:14,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:14,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:16,044 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:16,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:16,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [352959941] [2021-10-06 21:39:16,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [352959941] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:16,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:16,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:39:16,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752515369] [2021-10-06 21:39:16,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:39:16,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:39:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:39:16,046 INFO L87 Difference]: Start difference. First operand 466 states and 1659 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:23,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:23,687 INFO L93 Difference]: Finished difference Result 755 states and 2247 transitions. [2021-10-06 21:39:23,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2021-10-06 21:39:23,688 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:39:23,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:23,690 INFO L225 Difference]: With dead ends: 755 [2021-10-06 21:39:23,690 INFO L226 Difference]: Without dead ends: 740 [2021-10-06 21:39:23,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1144 ImplicationChecksByTransitivity, 7468.7ms TimeCoverageRelationStatistics Valid=894, Invalid=3138, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:39:23,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-06 21:39:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 466. [2021-10-06 21:39:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 465 states have (on average 3.567741935483871) internal successors, (1659), 465 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states 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 21:39:23,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1659 transitions. [2021-10-06 21:39:23,707 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1659 transitions. Word has length 18 [2021-10-06 21:39:23,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:23,707 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 1659 transitions. [2021-10-06 21:39:23,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:23,707 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1659 transitions. [2021-10-06 21:39:23,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:39:23,708 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:23,708 INFO L512 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:23,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:23,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:23,909 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:23,910 INFO L82 PathProgramCache]: Analyzing trace with hash -1847287103, now seen corresponding path program 49 times [2021-10-06 21:39:23,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:23,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [860849896] [2021-10-06 21:39:23,911 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:39:23,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:23,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:23,913 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:23,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2021-10-06 21:39:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:39:25,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:39:25,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:25,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:27,047 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:27,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [860849896] [2021-10-06 21:39:27,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [860849896] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:27,048 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:27,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20 [2021-10-06 21:39:27,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526305417] [2021-10-06 21:39:27,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:39:27,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:27,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:39:27,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:39:27,049 INFO L87 Difference]: Start difference. First operand 466 states and 1659 transitions. Second operand has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:36,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:36,964 INFO L93 Difference]: Finished difference Result 888 states and 2513 transitions. [2021-10-06 21:39:36,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-10-06 21:39:36,965 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:39:36,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:36,967 INFO L225 Difference]: With dead ends: 888 [2021-10-06 21:39:36,967 INFO L226 Difference]: Without dead ends: 868 [2021-10-06 21:39:36,967 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1206 ImplicationChecksByTransitivity, 9694.3ms TimeCoverageRelationStatistics Valid=804, Invalid=3618, Unknown=0, NotChecked=0, Total=4422 [2021-10-06 21:39:36,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-10-06 21:39:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 468. [2021-10-06 21:39:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 3.556745182012848) internal successors, (1661), 467 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states 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 21:39:36,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1661 transitions. [2021-10-06 21:39:36,977 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1661 transitions. Word has length 18 [2021-10-06 21:39:36,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:36,977 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1661 transitions. [2021-10-06 21:39:36,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:39:36,977 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1661 transitions. [2021-10-06 21:39:36,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:39:36,978 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:36,979 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:36,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (94)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:37,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:37,179 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:37,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:37,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1689281750, now seen corresponding path program 34 times [2021-10-06 21:39:37,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:37,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2028089138] [2021-10-06 21:39:37,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:39:37,182 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:37,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:37,183 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:37,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2021-10-06 21:39:38,763 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:39:38,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:38,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:39:38,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:39,193 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:39,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:40,555 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:40,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:40,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2028089138] [2021-10-06 21:39:40,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2028089138] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:40,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:40,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:39:40,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874366616] [2021-10-06 21:39:40,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:39:40,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:39:40,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:39:40,558 INFO L87 Difference]: Start difference. First operand 468 states and 1661 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 21:39:44,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:39:44,570 INFO L93 Difference]: Finished difference Result 550 states and 1783 transitions. [2021-10-06 21:39:44,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:39:44,571 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 21:39:44,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:39:44,572 INFO L225 Difference]: With dead ends: 550 [2021-10-06 21:39:44,572 INFO L226 Difference]: Without dead ends: 520 [2021-10-06 21:39:44,573 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 4543.9ms TimeCoverageRelationStatistics Valid=393, Invalid=1413, Unknown=0, NotChecked=0, Total=1806 [2021-10-06 21:39:44,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2021-10-06 21:39:44,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 476. [2021-10-06 21:39:44,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 476 states, 475 states have (on average 3.522105263157895) internal successors, (1673), 475 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states 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 21:39:44,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 1673 transitions. [2021-10-06 21:39:44,580 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 1673 transitions. Word has length 19 [2021-10-06 21:39:44,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:39:44,581 INFO L470 AbstractCegarLoop]: Abstraction has 476 states and 1673 transitions. [2021-10-06 21:39:44,581 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 21:39:44,581 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 1673 transitions. [2021-10-06 21:39:44,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-06 21:39:44,582 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:39:44,582 INFO L512 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:39:44,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:44,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:44,783 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-06 21:39:44,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:39:44,783 INFO L82 PathProgramCache]: Analyzing trace with hash 668180182, now seen corresponding path program 35 times [2021-10-06 21:39:44,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:39:44,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [346038032] [2021-10-06 21:39:44,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:39:44,785 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:39:44,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:39:44,786 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:39:44,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2021-10-06 21:39:46,339 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-06 21:39:46,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:39:46,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:39:46,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:39:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:46,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:39:48,308 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:39:48,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:39:48,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [346038032] [2021-10-06 21:39:48,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [346038032] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:39:48,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:39:48,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-06 21:39:48,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199656545] [2021-10-06 21:39:48,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-06 21:39:48,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:39:48,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-06 21:39:48,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2021-10-06 21:39:48,310 INFO L87 Difference]: Start difference. First operand 476 states and 1673 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 21:39:52,603 WARN L223 SmtUtils]: Removed 13 from assertion stack [2021-10-06 21:39:52,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-06 21:39:52,605 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:39:52,618 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 21:39:52,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2021-10-06 21:39:52,648 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (96)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:39:52,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:39:52,806 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. [2021-10-06 21:39:52,809 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:39:52,810 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:39:52,811 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:39:52,811 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:39:52,815 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:39:52,815 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:39:52,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:39:52 BasicIcfg [2021-10-06 21:39:52,817 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:39:52,818 INFO L168 Benchmark]: Toolchain (without parser) took 819295.21 ms. Allocated memory was 163.6 MB in the beginning and 237.0 MB in the end (delta: 73.4 MB). Free memory was 137.6 MB in the beginning and 72.3 MB in the end (delta: 65.3 MB). Peak memory consumption was 139.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:39:52,818 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:39:52,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.82 ms. Allocated memory is still 163.6 MB. Free memory was 137.3 MB in the beginning and 126.7 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:39:52,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.38 ms. Allocated memory is still 163.6 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:39:52,819 INFO L168 Benchmark]: Boogie Preprocessor took 60.69 ms. Allocated memory is still 163.6 MB. Free memory was 125.1 MB in the beginning and 123.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:39:52,820 INFO L168 Benchmark]: RCFGBuilder took 600.63 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 123.7 MB in the beginning and 173.6 MB in the end (delta: -49.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2021-10-06 21:39:52,820 INFO L168 Benchmark]: TraceAbstraction took 818150.40 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 173.1 MB in the beginning and 72.3 MB in the end (delta: 100.7 MB). Peak memory consumption was 141.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:39:52,822 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 163.6 MB. Free memory is still 130.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 394.82 ms. Allocated memory is still 163.6 MB. Free memory was 137.3 MB in the beginning and 126.7 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 63.38 ms. Allocated memory is still 163.6 MB. Free memory was 126.7 MB in the beginning and 125.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.69 ms. Allocated memory is still 163.6 MB. Free memory was 125.1 MB in the beginning and 123.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 600.63 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 123.7 MB in the beginning and 173.6 MB in the end (delta: -49.9 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 818150.40 ms. Allocated memory was 197.1 MB in the beginning and 237.0 MB in the end (delta: 39.8 MB). Free memory was 173.1 MB in the beginning and 72.3 MB in the end (delta: 100.7 MB). Peak memory consumption was 141.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7640.4ms, 87 PlacesBefore, 32 PlacesAfterwards, 86 TransitionsBefore, 27 TransitionsAfterwards, 576 CoEnabledTransitionPairs, 6 FixpointIterations, 51 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 83 TotalNumberOfCompositions, 665 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 637, positive: 633, positive conditional: 0, positive unconditional: 633, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 346, positive: 342, positive conditional: 0, positive unconditional: 342, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 346, positive: 342, positive conditional: 0, positive unconditional: 342, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 637, positive: 291, positive conditional: 0, positive unconditional: 291, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 346, unknown conditional: 0, unknown unconditional: 346] , 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: 72]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 68]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while BasicCegarLoop was constructing difference of abstraction (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 66]: 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 (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - TimeoutResultAtElement [Line: 67]: 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 (476states) and FLOYD_HOARE automaton (currently 22 states, 24 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 60 for 93ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 99 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 817982.6ms, OverallIterations: 95, TraceHistogramMax: 6, EmptinessCheckTime: 91.7ms, AutomataDifference: 587638.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7698.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4096 SDtfs, 18458 SDslu, 31313 SDs, 0 SdLazy, 36208 SolverSat, 4107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74177.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5571 GetRequests, 1278 SyntacticMatches, 0 SemanticMatches, 4292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58390 ImplicationChecksByTransitivity, 572359.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=94, InterpolantAutomatonStates: 3772, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 778.6ms AutomataMinimizationTime, 94 MinimizatonAttempts, 17916 StatesRemovedByMinimization, 89 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 544.6ms SsaConstructionTime, 11047.9ms SatisfiabilityAnalysisTime, 128342.9ms InterpolantComputationTime, 1519 NumberOfCodeBlocks, 1519 NumberOfCodeBlocksAsserted, 192 NumberOfCheckSat, 2848 ConstructedInterpolants, 4 QuantifiedInterpolants, 47047 SizeOfPredicates, 406 NumberOfNonLiveVariables, 6753 ConjunctsInSsa, 1960 ConjunctsInUnsatCore, 190 InterpolantComputations, 22 PerfectInterpolantSequences, 0/1384 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