/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/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-08 18:14:00,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-08 18:14:00,821 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-08 18:14:00,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-08 18:14:00,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-08 18:14:00,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-08 18:14:00,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-08 18:14:00,912 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-08 18:14:00,970 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-08 18:14:00,973 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-08 18:14:00,973 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-08 18:14:00,973 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-08 18:14:00,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-08 18:14:00,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-08 18:14:00,976 INFO L138 SettingsManager]: * Use SBE=true [2021-10-08 18:14:00,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-08 18:14:00,976 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-08 18:14:00,977 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-08 18:14:00,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-08 18:14:00,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-08 18:14:00,977 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-08 18:14:00,977 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-08 18:14:00,977 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-08 18:14:00,978 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-08 18:14:00,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-08 18:14:00,979 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-08 18:14:00,979 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-08 18:14:00,979 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-08 18:14:00,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-08 18:14:00,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-08 18:14:00,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-08 18:14:00,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-08 18:14:00,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-08 18:14:00,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:14:00,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-08 18:14:00,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-08 18:14:00,982 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-08 18:14:00,982 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-08 18:14:00,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-08 18:14:00,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-08 18:14:00,983 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-08 18:14:01,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-08 18:14:01,427 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-08 18:14:01,430 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-08 18:14:01,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-08 18:14:01,433 INFO L275 PluginConnector]: CDTParser initialized [2021-10-08 18:14:01,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-08 18:14:01,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/743d60712/9e4d69aa0afa4e86a1b254f1d90cbba9/FLAG644f65349 [2021-10-08 18:14:02,135 INFO L306 CDTParser]: Found 1 translation units. [2021-10-08 18:14:02,136 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-08 18:14:02,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/743d60712/9e4d69aa0afa4e86a1b254f1d90cbba9/FLAG644f65349 [2021-10-08 18:14:02,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/743d60712/9e4d69aa0afa4e86a1b254f1d90cbba9 [2021-10-08 18:14:02,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-08 18:14:02,525 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-08 18:14:02,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-08 18:14:02,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-08 18:14:02,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-08 18:14:02,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,538 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a90199b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02, skipping insertion in model container [2021-10-08 18:14:02,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-08 18:14:02,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-08 18:14:02,734 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/test-easy11.wvr.c[1888,1901] [2021-10-08 18:14:02,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:14:02,753 INFO L203 MainTranslator]: Completed pre-run [2021-10-08 18:14:02,777 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/test-easy11.wvr.c[1888,1901] [2021-10-08 18:14:02,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-08 18:14:02,800 INFO L208 MainTranslator]: Completed translation [2021-10-08 18:14:02,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02 WrapperNode [2021-10-08 18:14:02,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-08 18:14:02,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-08 18:14:02,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-08 18:14:02,803 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-08 18:14:02,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-08 18:14:02,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-08 18:14:02,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-08 18:14:02,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-08 18:14:02,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-08 18:14:02,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-08 18:14:02,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-08 18:14:02,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-08 18:14:02,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (1/1) ... [2021-10-08 18:14:02,892 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-08 18:14:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-08 18:14:02,924 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-08 18:14:02,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-08 18:14:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-08 18:14:03,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-08 18:14:03,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-08 18:14:03,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-08 18:14:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-08 18:14:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-08 18:14:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-08 18:14:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-08 18:14:03,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-08 18:14:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-08 18:14:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-08 18:14:03,023 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-08 18:14:03,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-08 18:14:03,471 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-08 18:14:03,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:14:03 BoogieIcfgContainer [2021-10-08 18:14:03,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-08 18:14:03,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-08 18:14:03,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-08 18:14:03,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-08 18:14:03,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.10 06:14:02" (1/3) ... [2021-10-08 18:14:03,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442a777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:14:03, skipping insertion in model container [2021-10-08 18:14:03,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.10 06:14:02" (2/3) ... [2021-10-08 18:14:03,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@442a777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.10 06:14:03, skipping insertion in model container [2021-10-08 18:14:03,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.10 06:14:03" (3/3) ... [2021-10-08 18:14:03,482 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2021-10-08 18:14:03,489 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-08 18:14:03,489 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-08 18:14:03,489 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-08 18:14:03,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,559 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,560 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,560 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,561 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,561 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,561 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,562 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,565 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,565 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,565 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,565 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,566 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,566 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,566 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,567 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,568 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,568 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,568 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,572 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,573 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,573 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,574 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,575 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,577 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,577 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,578 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,579 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,579 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,579 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,580 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,613 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,613 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,614 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,614 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,615 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,615 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,615 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,615 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,616 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,617 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,624 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,625 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,632 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,641 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,642 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,642 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-08 18:14:03,675 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-08 18:14:03,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-08 18:14:03,768 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-08 18:14:03,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-08 18:14:03,818 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-08 18:14:03,830 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 90 transitions, 196 flow [2021-10-08 18:14:03,835 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 90 transitions, 196 flow [2021-10-08 18:14:03,837 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 196 flow [2021-10-08 18:14:03,921 INFO L129 PetriNetUnfolder]: 6/88 cut-off events. [2021-10-08 18:14:03,922 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-08 18:14:03,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 6/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-10-08 18:14:03,933 INFO L116 LiptonReduction]: Number of co-enabled transitions 748 [2021-10-08 18:14:11,385 INFO L131 LiptonReduction]: Checked pairs total: 783 [2021-10-08 18:14:11,386 INFO L133 LiptonReduction]: Total number of compositions: 90 [2021-10-08 18:14:11,396 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-08 18:14:11,416 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:11,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-08 18:14:11,426 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:11,426 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-08 18:14:11,427 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:11,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:11,433 INFO L82 PathProgramCache]: Analyzing trace with hash 351, now seen corresponding path program 1 times [2021-10-08 18:14:11,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:11,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926080639] [2021-10-08 18:14:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:11,447 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:11,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:11,453 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:11,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-08 18:14:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:11,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-08 18:14:11,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:11,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:11,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:11,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:11,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926080639] [2021-10-08 18:14:11,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926080639] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:11,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:11,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-08 18:14:11,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64521832] [2021-10-08 18:14:11,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-08 18:14:11,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-08 18:14:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:14:11,539 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:11,556 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-08 18:14:11,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-08 18:14:11,558 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-08 18:14:11,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:11,569 INFO L225 Difference]: With dead ends: 64 [2021-10-08 18:14:11,569 INFO L226 Difference]: Without dead ends: 64 [2021-10-08 18:14:11,570 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-08 18:14:11,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-08 18:14:11,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-08 18:14:11,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:11,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-08 18:14:11,613 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-08 18:14:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:11,614 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-08 18:14:11,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:11,614 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-08 18:14:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:14:11,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:11,615 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:14:11,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:11,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:11,828 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:11,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:11,830 INFO L82 PathProgramCache]: Analyzing trace with hash 343750, now seen corresponding path program 1 times [2021-10-08 18:14:11,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:11,831 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1552936728] [2021-10-08 18:14:11,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:11,832 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:11,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:11,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:11,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-08 18:14:11,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:11,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:14:11,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:12,150 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 18:14:12,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-08 18:14:12,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:12,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:12,367 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:12,367 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1552936728] [2021-10-08 18:14:12,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1552936728] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:12,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:12,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:14:12,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228796383] [2021-10-08 18:14:12,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:14:12,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:12,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:14:12,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:14:12,378 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:12,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:12,433 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-08 18:14:12,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:12,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:14:12,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:12,436 INFO L225 Difference]: With dead ends: 58 [2021-10-08 18:14:12,436 INFO L226 Difference]: Without dead ends: 58 [2021-10-08 18:14:12,439 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:14:12,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-08 18:14:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-08 18:14:12,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:12,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 18:14:12,458 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-08 18:14:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:12,458 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 18:14:12,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 18:14:12,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-08 18:14:12,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:12,459 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-08 18:14:12,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:12,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:12,675 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:12,676 INFO L82 PathProgramCache]: Analyzing trace with hash 343751, now seen corresponding path program 1 times [2021-10-08 18:14:12,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:12,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010247875] [2021-10-08 18:14:12,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:12,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:12,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:12,710 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:12,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-08 18:14:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:12,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:14:12,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:12,853 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 18:14:12,854 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 [2021-10-08 18:14:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:13,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:13,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:13,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010247875] [2021-10-08 18:14:13,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010247875] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:13,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:13,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:14:13,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341481981] [2021-10-08 18:14:13,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:14:13,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:13,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:14:13,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:13,147 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:13,164 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-08 18:14:13,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:13,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-08 18:14:13,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:13,166 INFO L225 Difference]: With dead ends: 52 [2021-10-08 18:14:13,166 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 18:14:13,166 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 18:14:13,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-08 18:14:13,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-08 18:14:13,173 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-08 18:14:13,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:13,174 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-08 18:14:13,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,174 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-08 18:14:13,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:14:13,175 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:13,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:14:13,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:13,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:13,389 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:13,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:13,390 INFO L82 PathProgramCache]: Analyzing trace with hash 330350117, now seen corresponding path program 1 times [2021-10-08 18:14:13,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:13,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803970269] [2021-10-08 18:14:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:13,391 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:13,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:13,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:13,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-08 18:14:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:13,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-08 18:14:13,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:13,548 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-08 18:14:13,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-08 18:14:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:13,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:13,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:13,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:13,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803970269] [2021-10-08 18:14:13,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [803970269] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:13,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:13,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-08 18:14:13,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971051840] [2021-10-08 18:14:13,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-08 18:14:13,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:13,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-08 18:14:13,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:14:13,707 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:13,722 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-08 18:14:13,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:13,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:14:13,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:13,724 INFO L225 Difference]: With dead ends: 43 [2021-10-08 18:14:13,724 INFO L226 Difference]: Without dead ends: 43 [2021-10-08 18:14:13,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.9ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-08 18:14:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-08 18:14:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-08 18:14:13,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-08 18:14:13,729 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-08 18:14:13,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:13,731 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-08 18:14:13,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:13,731 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-08 18:14:13,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-08 18:14:13,732 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:13,732 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-08 18:14:13,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:13,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:13,948 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:13,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:13,949 INFO L82 PathProgramCache]: Analyzing trace with hash 330350118, now seen corresponding path program 1 times [2021-10-08 18:14:13,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:13,951 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751177731] [2021-10-08 18:14:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:13,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:13,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:13,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:13,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-08 18:14:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:14,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-08 18:14:14,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:14,111 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-08 18:14:14,112 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 [2021-10-08 18:14:14,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:14,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:14,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:14,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751177731] [2021-10-08 18:14:14,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751177731] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:14,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:14,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-08 18:14:14,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993405840] [2021-10-08 18:14:14,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-08 18:14:14,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:14,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-08 18:14:14,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:14,436 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:14,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:14,452 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-08 18:14:14,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-08 18:14:14,453 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-08 18:14:14,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:14,455 INFO L225 Difference]: With dead ends: 34 [2021-10-08 18:14:14,455 INFO L226 Difference]: Without dead ends: 34 [2021-10-08 18:14:14,455 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-08 18:14:14,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-08 18:14:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-08 18:14:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-08 18:14:14,465 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-08 18:14:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:14,466 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-08 18:14:14,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-08 18:14:14,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:14:14,467 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:14,468 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:14,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:14,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:14,684 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:14,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash 1848980154, now seen corresponding path program 1 times [2021-10-08 18:14:14,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:14,685 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185996757] [2021-10-08 18:14:14,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:14,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:14,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:14,686 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:14,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-08 18:14:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:14,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:14,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:14,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:15,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:15,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:15,210 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185996757] [2021-10-08 18:14:15,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185996757] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:15,210 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:15,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:14:15,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252428883] [2021-10-08 18:14:15,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:14:15,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:14:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:15,213 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:15,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:15,421 INFO L93 Difference]: Finished difference Result 59 states and 126 transitions. [2021-10-08 18:14:15,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:14:15,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:14:15,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:15,423 INFO L225 Difference]: With dead ends: 59 [2021-10-08 18:14:15,423 INFO L226 Difference]: Without dead ends: 44 [2021-10-08 18:14:15,424 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 266.9ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:15,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-08 18:14:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-10-08 18:14:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:15,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 82 transitions. [2021-10-08 18:14:15,429 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 82 transitions. Word has length 13 [2021-10-08 18:14:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:15,430 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 82 transitions. [2021-10-08 18:14:15,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:15,430 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 82 transitions. [2021-10-08 18:14:15,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:14:15,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:15,431 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:15,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:15,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:15,643 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:15,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:15,645 INFO L82 PathProgramCache]: Analyzing trace with hash 207226506, now seen corresponding path program 2 times [2021-10-08 18:14:15,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:15,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199208676] [2021-10-08 18:14:15,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:15,647 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:15,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:15,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:15,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-08 18:14:15,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:14:15,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:15,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:15,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:15,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:16,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:16,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:16,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199208676] [2021-10-08 18:14:16,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199208676] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:16,207 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:16,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:14:16,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939130380] [2021-10-08 18:14:16,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:14:16,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:16,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:14:16,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:16,213 INFO L87 Difference]: Start difference. First operand 38 states and 82 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:16,577 INFO L93 Difference]: Finished difference Result 55 states and 125 transitions. [2021-10-08 18:14:16,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:14:16,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:14:16,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:16,579 INFO L225 Difference]: With dead ends: 55 [2021-10-08 18:14:16,579 INFO L226 Difference]: Without dead ends: 46 [2021-10-08 18:14:16,579 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 281.4ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:16,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-08 18:14:16,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-10-08 18:14:16,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 89 transitions. [2021-10-08 18:14:16,584 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 89 transitions. Word has length 13 [2021-10-08 18:14:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:16,584 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 89 transitions. [2021-10-08 18:14:16,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 89 transitions. [2021-10-08 18:14:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:14:16,585 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:16,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:16,608 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:16,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:16,796 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:16,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:16,796 INFO L82 PathProgramCache]: Analyzing trace with hash 833500596, now seen corresponding path program 3 times [2021-10-08 18:14:16,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:16,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982795155] [2021-10-08 18:14:16,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:16,797 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:16,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:16,799 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:16,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-08 18:14:16,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-08 18:14:16,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:16,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:16,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:17,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:17,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:17,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982795155] [2021-10-08 18:14:17,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982795155] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:17,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:17,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:14:17,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383964644] [2021-10-08 18:14:17,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:14:17,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:17,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:14:17,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:17,374 INFO L87 Difference]: Start difference. First operand 40 states and 89 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:17,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:17,768 INFO L93 Difference]: Finished difference Result 59 states and 137 transitions. [2021-10-08 18:14:17,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:14:17,771 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:14:17,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:17,772 INFO L225 Difference]: With dead ends: 59 [2021-10-08 18:14:17,773 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 18:14:17,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 325.4ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:14:17,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 18:14:17,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-08 18:14:17,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:17,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 106 transitions. [2021-10-08 18:14:17,785 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 106 transitions. Word has length 13 [2021-10-08 18:14:17,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:17,785 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 106 transitions. [2021-10-08 18:14:17,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 106 transitions. [2021-10-08 18:14:17,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:14:17,789 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:17,789 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:17,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:17,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:17,997 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:17,998 INFO L82 PathProgramCache]: Analyzing trace with hash 500884128, now seen corresponding path program 4 times [2021-10-08 18:14:17,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:17,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699905066] [2021-10-08 18:14:17,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:18,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:18,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:18,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:18,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-08 18:14:18,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:18,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:18,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:18,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:18,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:18,553 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:18,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699905066] [2021-10-08 18:14:18,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699905066] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:18,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:18,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:14:18,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983662101] [2021-10-08 18:14:18,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:14:18,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:18,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:14:18,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:18,555 INFO L87 Difference]: Start difference. First operand 46 states and 106 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:18,740 INFO L93 Difference]: Finished difference Result 61 states and 137 transitions. [2021-10-08 18:14:18,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:14:18,741 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:14:18,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:18,742 INFO L225 Difference]: With dead ends: 61 [2021-10-08 18:14:18,742 INFO L226 Difference]: Without dead ends: 52 [2021-10-08 18:14:18,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 232.4ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:14:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-08 18:14:18,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-10-08 18:14:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 47 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 111 transitions. [2021-10-08 18:14:18,747 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 111 transitions. Word has length 13 [2021-10-08 18:14:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:18,747 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 111 transitions. [2021-10-08 18:14:18,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:18,748 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 111 transitions. [2021-10-08 18:14:18,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:14:18,749 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:18,749 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:18,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:18,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:18,958 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:18,959 INFO L82 PathProgramCache]: Analyzing trace with hash -121822086, now seen corresponding path program 5 times [2021-10-08 18:14:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:18,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523026160] [2021-10-08 18:14:18,960 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:18,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:18,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:18,962 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:18,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-08 18:14:19,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-08 18:14:19,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:19,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:19,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:19,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:19,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:19,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523026160] [2021-10-08 18:14:19,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523026160] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:19,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:19,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:14:19,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500609841] [2021-10-08 18:14:19,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:14:19,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:19,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:14:19,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:19,541 INFO L87 Difference]: Start difference. First operand 48 states and 111 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:19,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:19,884 INFO L93 Difference]: Finished difference Result 69 states and 165 transitions. [2021-10-08 18:14:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:14:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:14:19,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:19,886 INFO L225 Difference]: With dead ends: 69 [2021-10-08 18:14:19,887 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 18:14:19,887 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 320.1ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:14:19,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 18:14:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-10-08 18:14:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 55 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) [2021-10-08 18:14:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 134 transitions. [2021-10-08 18:14:19,893 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 134 transitions. Word has length 13 [2021-10-08 18:14:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:19,893 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 134 transitions. [2021-10-08 18:14:19,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:19,894 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 134 transitions. [2021-10-08 18:14:19,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-08 18:14:19,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:19,895 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:19,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:20,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:20,101 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:20,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:20,102 INFO L82 PathProgramCache]: Analyzing trace with hash -354422526, now seen corresponding path program 6 times [2021-10-08 18:14:20,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:20,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2055094006] [2021-10-08 18:14:20,103 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:20,103 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:20,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:20,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:20,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-08 18:14:20,207 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-08 18:14:20,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:20,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:20,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:20,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:20,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:20,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2055094006] [2021-10-08 18:14:20,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2055094006] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-08 18:14:20,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-08 18:14:20,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-08 18:14:20,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882562313] [2021-10-08 18:14:20,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:14:20,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:14:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:14:20,665 INFO L87 Difference]: Start difference. First operand 56 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) [2021-10-08 18:14:20,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:20,906 INFO L93 Difference]: Finished difference Result 67 states and 159 transitions. [2021-10-08 18:14:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-08 18:14:20,907 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-08 18:14:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:20,908 INFO L225 Difference]: With dead ends: 67 [2021-10-08 18:14:20,908 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 18:14:20,908 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 249.4ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-08 18:14:20,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 18:14:20,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-08 18:14:20,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-08 18:14:20,919 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 13 [2021-10-08 18:14:20,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:20,924 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-08 18:14:20,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:20,924 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-08 18:14:20,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:20,925 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:20,925 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:20,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:21,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:21,126 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:21,127 INFO L82 PathProgramCache]: Analyzing trace with hash 949738025, now seen corresponding path program 1 times [2021-10-08 18:14:21,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:21,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797243603] [2021-10-08 18:14:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:21,128 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:21,129 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:21,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-08 18:14:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:21,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:14:21,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:21,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:21,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,369 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:21,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797243603] [2021-10-08 18:14:21,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797243603] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:21,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:21,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-10-08 18:14:21,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132832040] [2021-10-08 18:14:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:21,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:21,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:14:21,372 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:21,439 INFO L93 Difference]: Finished difference Result 80 states and 190 transitions. [2021-10-08 18:14:21,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:14:21,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:14:21,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:21,441 INFO L225 Difference]: With dead ends: 80 [2021-10-08 18:14:21,441 INFO L226 Difference]: Without dead ends: 80 [2021-10-08 18:14:21,442 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:14:21,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-08 18:14:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-08 18:14:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.4745762711864407) internal successors, (146), 59 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 146 transitions. [2021-10-08 18:14:21,446 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 146 transitions. Word has length 14 [2021-10-08 18:14:21,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:21,447 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 146 transitions. [2021-10-08 18:14:21,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 146 transitions. [2021-10-08 18:14:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:21,448 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:21,448 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:21,460 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-10-08 18:14:21,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:21,660 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:21,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:21,661 INFO L82 PathProgramCache]: Analyzing trace with hash 754841097, now seen corresponding path program 2 times [2021-10-08 18:14:21,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:21,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116798708] [2021-10-08 18:14:21,661 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:21,662 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:21,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:21,663 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:21,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-08 18:14:21,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:21,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:21,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:14:21,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:21,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:21,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:21,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116798708] [2021-10-08 18:14:21,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116798708] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:21,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:21,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 18:14:21,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839360302] [2021-10-08 18:14:21,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:21,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:14:21,982 INFO L87 Difference]: Start difference. First operand 60 states and 146 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:22,080 INFO L93 Difference]: Finished difference Result 84 states and 192 transitions. [2021-10-08 18:14:22,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:14:22,081 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:14:22,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:22,082 INFO L225 Difference]: With dead ends: 84 [2021-10-08 18:14:22,082 INFO L226 Difference]: Without dead ends: 84 [2021-10-08 18:14:22,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:14:22,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-08 18:14:22,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2021-10-08 18:14:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 55 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) [2021-10-08 18:14:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 134 transitions. [2021-10-08 18:14:22,093 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 134 transitions. Word has length 14 [2021-10-08 18:14:22,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:22,093 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 134 transitions. [2021-10-08 18:14:22,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,094 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 134 transitions. [2021-10-08 18:14:22,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:22,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:22,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:22,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:22,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:22,299 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:22,300 INFO L82 PathProgramCache]: Analyzing trace with hash 406362475, now seen corresponding path program 1 times [2021-10-08 18:14:22,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:22,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742630949] [2021-10-08 18:14:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:22,301 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:22,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:22,303 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:22,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-08 18:14:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:22,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:14:22,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:22,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:22,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:22,582 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:22,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742630949] [2021-10-08 18:14:22,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742630949] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:22,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:22,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 18:14:22,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996513759] [2021-10-08 18:14:22,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:22,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:22,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:22,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:14:22,584 INFO L87 Difference]: Start difference. First operand 56 states and 134 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:22,667 INFO L93 Difference]: Finished difference Result 92 states and 194 transitions. [2021-10-08 18:14:22,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:14:22,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:14:22,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:22,670 INFO L225 Difference]: With dead ends: 92 [2021-10-08 18:14:22,670 INFO L226 Difference]: Without dead ends: 92 [2021-10-08 18:14:22,671 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:14:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-08 18:14:22,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 58. [2021-10-08 18:14:22,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 137 transitions. [2021-10-08 18:14:22,675 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 137 transitions. Word has length 14 [2021-10-08 18:14:22,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:22,675 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 137 transitions. [2021-10-08 18:14:22,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:22,676 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 137 transitions. [2021-10-08 18:14:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:22,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:22,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:22,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:22,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:22,889 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:22,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:22,890 INFO L82 PathProgramCache]: Analyzing trace with hash -796860709, now seen corresponding path program 3 times [2021-10-08 18:14:22,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:22,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543220813] [2021-10-08 18:14:22,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:22,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:22,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:22,893 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:22,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-08 18:14:23,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:14:23,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:23,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:14:23,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:23,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:23,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:23,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543220813] [2021-10-08 18:14:23,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543220813] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:23,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:23,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 18:14:23,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853500130] [2021-10-08 18:14:23,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:23,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:23,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:23,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:14:23,177 INFO L87 Difference]: Start difference. First operand 58 states and 137 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:23,272 INFO L93 Difference]: Finished difference Result 84 states and 181 transitions. [2021-10-08 18:14:23,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-08 18:14:23,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:14:23,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:23,274 INFO L225 Difference]: With dead ends: 84 [2021-10-08 18:14:23,274 INFO L226 Difference]: Without dead ends: 84 [2021-10-08 18:14:23,275 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.7ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:14:23,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-08 18:14:23,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2021-10-08 18:14:23,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 130 transitions. [2021-10-08 18:14:23,283 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 130 transitions. Word has length 14 [2021-10-08 18:14:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:23,283 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 130 transitions. [2021-10-08 18:14:23,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 130 transitions. [2021-10-08 18:14:23,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:23,287 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:23,287 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:23,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:23,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:23,488 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:23,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:23,489 INFO L82 PathProgramCache]: Analyzing trace with hash -2059515939, now seen corresponding path program 2 times [2021-10-08 18:14:23,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:23,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956732000] [2021-10-08 18:14:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:23,490 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:23,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:23,491 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:23,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-08 18:14:23,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:23,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:23,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:14:23,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:23,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:23,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:23,784 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:23,784 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956732000] [2021-10-08 18:14:23,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956732000] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:23,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:23,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 18:14:23,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862262939] [2021-10-08 18:14:23,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:23,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:23,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:23,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:14:23,787 INFO L87 Difference]: Start difference. First operand 56 states and 130 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:23,872 INFO L93 Difference]: Finished difference Result 84 states and 180 transitions. [2021-10-08 18:14:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:14:23,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:14:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:23,873 INFO L225 Difference]: With dead ends: 84 [2021-10-08 18:14:23,873 INFO L226 Difference]: Without dead ends: 84 [2021-10-08 18:14:23,874 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 66.8ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:14:23,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-08 18:14:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2021-10-08 18:14:23,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 125 transitions. [2021-10-08 18:14:23,879 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 125 transitions. Word has length 14 [2021-10-08 18:14:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:23,880 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 125 transitions. [2021-10-08 18:14:23,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 125 transitions. [2021-10-08 18:14:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-08 18:14:23,880 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:23,880 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:23,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:24,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:24,093 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:24,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:24,094 INFO L82 PathProgramCache]: Analyzing trace with hash -533242891, now seen corresponding path program 3 times [2021-10-08 18:14:24,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:24,095 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007846115] [2021-10-08 18:14:24,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:24,095 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:24,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:24,096 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:24,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-08 18:14:24,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:14:24,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:24,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-08 18:14:24,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:24,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:24,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:24,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:24,354 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:24,354 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007846115] [2021-10-08 18:14:24,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007846115] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:14:24,354 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:14:24,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-10-08 18:14:24,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436218034] [2021-10-08 18:14:24,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-08 18:14:24,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:24,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-08 18:14:24,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-08 18:14:24,357 INFO L87 Difference]: Start difference. First operand 54 states and 125 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:24,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:24,415 INFO L93 Difference]: Finished difference Result 60 states and 136 transitions. [2021-10-08 18:14:24,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-08 18:14:24,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-08 18:14:24,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:24,416 INFO L225 Difference]: With dead ends: 60 [2021-10-08 18:14:24,416 INFO L226 Difference]: Without dead ends: 60 [2021-10-08 18:14:24,418 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-08 18:14:24,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-08 18:14:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-10-08 18:14:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:24,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-08 18:14:24,421 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-08 18:14:24,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:24,422 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-08 18:14:24,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:24,427 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-08 18:14:24,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:24,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:24,428 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:24,442 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:24,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:24,629 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:24,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:24,630 INFO L82 PathProgramCache]: Analyzing trace with hash -622252698, now seen corresponding path program 1 times [2021-10-08 18:14:24,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:24,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580358722] [2021-10-08 18:14:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-08 18:14:24,631 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:24,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:24,632 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:24,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-08 18:14:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:24,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:14:24,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:25,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:25,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:25,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:25,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:25,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580358722] [2021-10-08 18:14:25,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580358722] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:25,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:25,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:25,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877520284] [2021-10-08 18:14:25,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:25,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:25,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:25,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:25,783 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:26,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:26,525 INFO L93 Difference]: Finished difference Result 93 states and 195 transitions. [2021-10-08 18:14:26,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:14:26,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:26,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:26,527 INFO L225 Difference]: With dead ends: 93 [2021-10-08 18:14:26,527 INFO L226 Difference]: Without dead ends: 74 [2021-10-08 18:14:26,528 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 990.2ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:14:26,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-08 18:14:26,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2021-10-08 18:14:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.272727272727273) internal successors, (125), 55 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:26,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 125 transitions. [2021-10-08 18:14:26,531 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 125 transitions. Word has length 15 [2021-10-08 18:14:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:26,531 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 125 transitions. [2021-10-08 18:14:26,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:26,532 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 125 transitions. [2021-10-08 18:14:26,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:26,532 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:26,532 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:26,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:26,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:26,741 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:26,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:26,741 INFO L82 PathProgramCache]: Analyzing trace with hash 22991766, now seen corresponding path program 2 times [2021-10-08 18:14:26,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:26,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196602375] [2021-10-08 18:14:26,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:26,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:26,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:26,744 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:26,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-08 18:14:26,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:26,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:26,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:14:26,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:27,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:27,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:27,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:27,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196602375] [2021-10-08 18:14:27,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1196602375] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:27,950 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:27,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:27,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853491771] [2021-10-08 18:14:27,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:27,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:27,952 INFO L87 Difference]: Start difference. First operand 56 states and 125 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:30,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:30,345 INFO L93 Difference]: Finished difference Result 136 states and 335 transitions. [2021-10-08 18:14:30,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-08 18:14:30,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:30,347 INFO L225 Difference]: With dead ends: 136 [2021-10-08 18:14:30,348 INFO L226 Difference]: Without dead ends: 118 [2021-10-08 18:14:30,348 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2254.1ms TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:14:30,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-08 18:14:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 74. [2021-10-08 18:14:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.4246575342465753) internal successors, (177), 73 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 177 transitions. [2021-10-08 18:14:30,377 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 177 transitions. Word has length 15 [2021-10-08 18:14:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:30,377 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 177 transitions. [2021-10-08 18:14:30,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 177 transitions. [2021-10-08 18:14:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:30,378 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:30,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:30,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:30,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:30,584 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:30,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:30,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1467739308, now seen corresponding path program 3 times [2021-10-08 18:14:30,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:30,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003982540] [2021-10-08 18:14:30,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:14:30,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:30,588 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:30,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-08 18:14:30,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:14:30,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:30,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:14:30,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:31,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:31,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:31,670 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:31,670 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003982540] [2021-10-08 18:14:31,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003982540] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:31,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:31,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:31,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674216613] [2021-10-08 18:14:31,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:31,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:31,673 INFO L87 Difference]: Start difference. First operand 74 states and 177 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:36,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:36,703 INFO L93 Difference]: Finished difference Result 207 states and 528 transitions. [2021-10-08 18:14:36,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:14:36,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:36,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:36,706 INFO L225 Difference]: With dead ends: 207 [2021-10-08 18:14:36,706 INFO L226 Difference]: Without dead ends: 188 [2021-10-08 18:14:36,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4357.6ms TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 18:14:36,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-08 18:14:36,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 92. [2021-10-08 18:14:36,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.7252747252747254) internal successors, (248), 91 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 248 transitions. [2021-10-08 18:14:36,713 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 248 transitions. Word has length 15 [2021-10-08 18:14:36,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:36,714 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 248 transitions. [2021-10-08 18:14:36,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:36,714 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 248 transitions. [2021-10-08 18:14:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:36,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:36,715 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:36,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:36,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:36,928 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:36,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:36,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1700339748, now seen corresponding path program 4 times [2021-10-08 18:14:36,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:36,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900712707] [2021-10-08 18:14:36,930 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:14:36,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:36,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:36,932 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:36,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-08 18:14:37,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:14:37,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:37,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:14:37,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:37,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:38,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:38,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900712707] [2021-10-08 18:14:38,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900712707] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:38,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:38,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:38,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684736928] [2021-10-08 18:14:38,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:38,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:38,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:38,069 INFO L87 Difference]: Start difference. First operand 92 states and 248 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:42,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:42,776 INFO L93 Difference]: Finished difference Result 220 states and 566 transitions. [2021-10-08 18:14:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:14:42,777 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:42,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:42,779 INFO L225 Difference]: With dead ends: 220 [2021-10-08 18:14:42,779 INFO L226 Difference]: Without dead ends: 208 [2021-10-08 18:14:42,780 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 4201.7ms TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:14:42,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-08 18:14:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 94. [2021-10-08 18:14:42,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.6989247311827955) internal successors, (251), 93 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:42,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 251 transitions. [2021-10-08 18:14:42,787 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 251 transitions. Word has length 15 [2021-10-08 18:14:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:42,787 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 251 transitions. [2021-10-08 18:14:42,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:42,788 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 251 transitions. [2021-10-08 18:14:42,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:42,788 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:42,788 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:42,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:43,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:43,002 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:43,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:43,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1925877126, now seen corresponding path program 5 times [2021-10-08 18:14:43,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:43,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522549603] [2021-10-08 18:14:43,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:14:43,005 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:43,006 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:43,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-08 18:14:43,223 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:43,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:43,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:14:43,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:43,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:43,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:43,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:43,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:43,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522549603] [2021-10-08 18:14:43,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522549603] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:43,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:43,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-08 18:14:43,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383615264] [2021-10-08 18:14:43,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:14:43,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:14:43,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:14:43,844 INFO L87 Difference]: Start difference. First operand 94 states and 251 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:45,255 INFO L93 Difference]: Finished difference Result 171 states and 418 transitions. [2021-10-08 18:14:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:14:45,255 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:45,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:45,257 INFO L225 Difference]: With dead ends: 171 [2021-10-08 18:14:45,257 INFO L226 Difference]: Without dead ends: 154 [2021-10-08 18:14:45,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1125.5ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:14:45,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-08 18:14:45,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 112. [2021-10-08 18:14:45,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.81981981981982) internal successors, (313), 111 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:45,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 313 transitions. [2021-10-08 18:14:45,266 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 313 transitions. Word has length 15 [2021-10-08 18:14:45,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:45,267 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 313 transitions. [2021-10-08 18:14:45,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:45,267 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 313 transitions. [2021-10-08 18:14:45,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:45,270 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:45,271 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:45,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:45,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:45,484 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:45,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:45,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1312637842, now seen corresponding path program 6 times [2021-10-08 18:14:45,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:45,485 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1969224126] [2021-10-08 18:14:45,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:14:45,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:45,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:45,487 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:45,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-08 18:14:45,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:14:45,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:45,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:14:45,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:46,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:46,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:46,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:46,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1969224126] [2021-10-08 18:14:46,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1969224126] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:46,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:46,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:46,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858844858] [2021-10-08 18:14:46,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:46,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:46,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:46,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:46,821 INFO L87 Difference]: Start difference. First operand 112 states and 313 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:51,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:51,504 INFO L93 Difference]: Finished difference Result 258 states and 662 transitions. [2021-10-08 18:14:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:14:51,505 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:51,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:51,507 INFO L225 Difference]: With dead ends: 258 [2021-10-08 18:14:51,507 INFO L226 Difference]: Without dead ends: 244 [2021-10-08 18:14:51,508 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 4146.9ms TimeCoverageRelationStatistics Valid=403, Invalid=1759, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:14:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-08 18:14:51,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 136. [2021-10-08 18:14:51,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.0) internal successors, (405), 135 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:51,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 405 transitions. [2021-10-08 18:14:51,519 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 405 transitions. Word has length 15 [2021-10-08 18:14:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:51,519 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 405 transitions. [2021-10-08 18:14:51,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:51,519 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 405 transitions. [2021-10-08 18:14:51,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:51,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:51,521 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:51,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:51,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:51,734 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:51,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:51,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1080037402, now seen corresponding path program 7 times [2021-10-08 18:14:51,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:51,736 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802378776] [2021-10-08 18:14:51,736 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:14:51,736 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:51,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:51,738 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:51,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-08 18:14:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:14:51,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:14:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:52,275 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:52,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:52,890 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:52,891 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:52,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802378776] [2021-10-08 18:14:52,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802378776] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:52,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:52,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:52,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792806747] [2021-10-08 18:14:52,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:52,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:52,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:52,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:52,893 INFO L87 Difference]: Start difference. First operand 136 states and 405 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:57,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:14:57,517 INFO L93 Difference]: Finished difference Result 240 states and 622 transitions. [2021-10-08 18:14:57,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:14:57,518 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:14:57,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:14:57,520 INFO L225 Difference]: With dead ends: 240 [2021-10-08 18:14:57,520 INFO L226 Difference]: Without dead ends: 228 [2021-10-08 18:14:57,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 4166.4ms TimeCoverageRelationStatistics Valid=445, Invalid=1717, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:14:57,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-08 18:14:57,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 132. [2021-10-08 18:14:57,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.954198473282443) internal successors, (387), 131 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:57,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 387 transitions. [2021-10-08 18:14:57,529 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 387 transitions. Word has length 15 [2021-10-08 18:14:57,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:14:57,529 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 387 transitions. [2021-10-08 18:14:57,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:14:57,529 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 387 transitions. [2021-10-08 18:14:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:14:57,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:14:57,530 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:14:57,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-08 18:14:57,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:14:57,743 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:14:57,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:14:57,744 INFO L82 PathProgramCache]: Analyzing trace with hash 224136102, now seen corresponding path program 8 times [2021-10-08 18:14:57,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:14:57,745 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323753231] [2021-10-08 18:14:57,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:14:57,745 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:14:57,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:14:57,747 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:14:57,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-08 18:14:57,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:14:57,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:14:57,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:14:57,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:14:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:58,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:14:59,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:14:59,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:14:59,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323753231] [2021-10-08 18:14:59,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323753231] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:14:59,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:14:59,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:14:59,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123940013] [2021-10-08 18:14:59,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:14:59,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:14:59,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:14:59,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:14:59,351 INFO L87 Difference]: Start difference. First operand 132 states and 387 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:03,722 INFO L93 Difference]: Finished difference Result 242 states and 610 transitions. [2021-10-08 18:15:03,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:15:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:15:03,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:03,725 INFO L225 Difference]: With dead ends: 242 [2021-10-08 18:15:03,725 INFO L226 Difference]: Without dead ends: 218 [2021-10-08 18:15:03,725 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 4335.1ms TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2021-10-08 18:15:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-08 18:15:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 144. [2021-10-08 18:15:03,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 3.027972027972028) internal successors, (433), 143 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 433 transitions. [2021-10-08 18:15:03,732 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 433 transitions. Word has length 15 [2021-10-08 18:15:03,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:03,733 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 433 transitions. [2021-10-08 18:15:03,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 433 transitions. [2021-10-08 18:15:03,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:03,734 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:03,734 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:03,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:03,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:03,937 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:03,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:03,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1067761396, now seen corresponding path program 9 times [2021-10-08 18:15:03,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:03,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140527121] [2021-10-08 18:15:03,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:15:03,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:03,940 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:03,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-08 18:15:04,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:15:04,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:04,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:15:04,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:04,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:04,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:05,066 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:05,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140527121] [2021-10-08 18:15:05,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140527121] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:05,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:05,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:15:05,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610325250] [2021-10-08 18:15:05,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:15:05,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:05,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:15:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:15:05,069 INFO L87 Difference]: Start difference. First operand 144 states and 433 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:08,384 INFO L93 Difference]: Finished difference Result 295 states and 856 transitions. [2021-10-08 18:15:08,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:15:08,385 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:15:08,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:08,389 INFO L225 Difference]: With dead ends: 295 [2021-10-08 18:15:08,389 INFO L226 Difference]: Without dead ends: 278 [2021-10-08 18:15:08,390 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2938.2ms TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:15:08,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-08 18:15:08,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 148. [2021-10-08 18:15:08,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 3.0136054421768708) internal successors, (443), 147 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:08,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 443 transitions. [2021-10-08 18:15:08,399 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 443 transitions. Word has length 15 [2021-10-08 18:15:08,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:08,400 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 443 transitions. [2021-10-08 18:15:08,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:08,400 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 443 transitions. [2021-10-08 18:15:08,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:08,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:08,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:08,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-08 18:15:08,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:08,615 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:08,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:08,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1091316596, now seen corresponding path program 10 times [2021-10-08 18:15:08,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:08,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046165466] [2021-10-08 18:15:08,616 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:15:08,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:08,617 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:08,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-08 18:15:08,860 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:15:08,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:08,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:15:08,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:09,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:09,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:09,693 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:09,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046165466] [2021-10-08 18:15:09,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046165466] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:09,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:09,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:15:09,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727077638] [2021-10-08 18:15:09,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:15:09,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:09,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:15:09,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:15:09,696 INFO L87 Difference]: Start difference. First operand 148 states and 443 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:11,211 INFO L93 Difference]: Finished difference Result 209 states and 569 transitions. [2021-10-08 18:15:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:15:11,212 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:15:11,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:11,213 INFO L225 Difference]: With dead ends: 209 [2021-10-08 18:15:11,214 INFO L226 Difference]: Without dead ends: 196 [2021-10-08 18:15:11,214 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1371.6ms TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:15:11,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-08 18:15:11,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 162. [2021-10-08 18:15:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 3.018633540372671) internal successors, (486), 161 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 486 transitions. [2021-10-08 18:15:11,222 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 486 transitions. Word has length 15 [2021-10-08 18:15:11,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:11,222 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 486 transitions. [2021-10-08 18:15:11,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:11,223 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 486 transitions. [2021-10-08 18:15:11,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:11,223 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:11,223 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:11,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:11,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:11,437 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:11,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:11,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1161140828, now seen corresponding path program 11 times [2021-10-08 18:15:11,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:11,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1796780460] [2021-10-08 18:15:11,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:15:11,439 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:11,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:11,440 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:11,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-08 18:15:11,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:15:11,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:11,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:15:11,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:12,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:12,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:12,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:12,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:12,566 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1796780460] [2021-10-08 18:15:12,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1796780460] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:12,566 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:12,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:15:12,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684977425] [2021-10-08 18:15:12,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:15:12,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:12,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:15:12,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:15:12,568 INFO L87 Difference]: Start difference. First operand 162 states and 486 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:15,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:15,737 INFO L93 Difference]: Finished difference Result 320 states and 842 transitions. [2021-10-08 18:15:15,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-08 18:15:15,738 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:15:15,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:15,741 INFO L225 Difference]: With dead ends: 320 [2021-10-08 18:15:15,741 INFO L226 Difference]: Without dead ends: 296 [2021-10-08 18:15:15,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3088.8ms TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:15:15,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-08 18:15:15,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 192. [2021-10-08 18:15:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.031413612565445) internal successors, (579), 191 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 579 transitions. [2021-10-08 18:15:15,752 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 579 transitions. Word has length 15 [2021-10-08 18:15:15,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:15,753 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 579 transitions. [2021-10-08 18:15:15,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 579 transitions. [2021-10-08 18:15:15,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:15,754 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:15,754 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:15,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2021-10-08 18:15:15,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:15,966 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:15,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:15,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1504940070, now seen corresponding path program 12 times [2021-10-08 18:15:15,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:15,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [508531585] [2021-10-08 18:15:15,968 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:15:15,968 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:15,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:15,970 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:15,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-08 18:15:16,224 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:15:16,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:16,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:15:16,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:16,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:17,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:17,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [508531585] [2021-10-08 18:15:17,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [508531585] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:17,137 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:17,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:15:17,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607148517] [2021-10-08 18:15:17,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:15:17,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:17,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:15:17,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:15:17,139 INFO L87 Difference]: Start difference. First operand 192 states and 579 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:22,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:22,302 INFO L93 Difference]: Finished difference Result 466 states and 1390 transitions. [2021-10-08 18:15:22,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:15:22,304 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:15:22,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:22,308 INFO L225 Difference]: With dead ends: 466 [2021-10-08 18:15:22,308 INFO L226 Difference]: Without dead ends: 448 [2021-10-08 18:15:22,309 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 4458.7ms TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:15:22,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-08 18:15:22,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 214. [2021-10-08 18:15:22,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.107981220657277) internal successors, (662), 213 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:22,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 662 transitions. [2021-10-08 18:15:22,321 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 662 transitions. Word has length 15 [2021-10-08 18:15:22,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:22,321 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 662 transitions. [2021-10-08 18:15:22,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:22,322 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 662 transitions. [2021-10-08 18:15:22,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-08 18:15:22,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:22,323 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:22,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:22,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:22,537 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:22,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1272339630, now seen corresponding path program 13 times [2021-10-08 18:15:22,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:22,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592343539] [2021-10-08 18:15:22,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:15:22,538 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:22,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:22,540 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:22,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-08 18:15:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:22,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:15:22,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:23,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:23,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:23,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:23,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592343539] [2021-10-08 18:15:23,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592343539] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:23,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:23,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-08 18:15:23,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499137382] [2021-10-08 18:15:23,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-08 18:15:23,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:23,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-08 18:15:23,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-08 18:15:23,618 INFO L87 Difference]: Start difference. First operand 214 states and 662 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:24,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:24,755 INFO L93 Difference]: Finished difference Result 253 states and 724 transitions. [2021-10-08 18:15:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:15:24,756 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-08 18:15:24,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:24,758 INFO L225 Difference]: With dead ends: 253 [2021-10-08 18:15:24,758 INFO L226 Difference]: Without dead ends: 244 [2021-10-08 18:15:24,758 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1084.7ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:15:24,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-08 18:15:24,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 210. [2021-10-08 18:15:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.062200956937799) internal successors, (640), 209 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 640 transitions. [2021-10-08 18:15:24,767 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 640 transitions. Word has length 15 [2021-10-08 18:15:24,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:24,767 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 640 transitions. [2021-10-08 18:15:24,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 640 transitions. [2021-10-08 18:15:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:24,768 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:24,769 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:24,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:24,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:24,982 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:24,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:24,983 INFO L82 PathProgramCache]: Analyzing trace with hash -1505512171, now seen corresponding path program 14 times [2021-10-08 18:15:24,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:24,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650875390] [2021-10-08 18:15:24,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:15:24,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:24,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:24,985 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:24,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-08 18:15:25,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:15:25,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:25,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:25,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:25,349 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:25,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:25,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:25,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650875390] [2021-10-08 18:15:25,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650875390] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:25,449 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:25,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-08 18:15:25,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314332850] [2021-10-08 18:15:25,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 18:15:25,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:25,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 18:15:25,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:15:25,451 INFO L87 Difference]: Start difference. First operand 210 states and 640 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:25,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:25,632 INFO L93 Difference]: Finished difference Result 278 states and 787 transitions. [2021-10-08 18:15:25,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:15:25,638 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:25,640 INFO L225 Difference]: With dead ends: 278 [2021-10-08 18:15:25,641 INFO L226 Difference]: Without dead ends: 278 [2021-10-08 18:15:25,641 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 128.0ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:15:25,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-08 18:15:25,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 204. [2021-10-08 18:15:25,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.0591133004926108) internal successors, (621), 203 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:25,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 621 transitions. [2021-10-08 18:15:25,650 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 621 transitions. Word has length 16 [2021-10-08 18:15:25,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:25,651 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 621 transitions. [2021-10-08 18:15:25,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:25,651 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 621 transitions. [2021-10-08 18:15:25,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:25,652 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:25,652 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:25,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:25,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:25,866 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:25,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:25,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1588209405, now seen corresponding path program 15 times [2021-10-08 18:15:25,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:25,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642980469] [2021-10-08 18:15:25,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:15:25,869 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:25,869 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:25,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-08 18:15:26,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:15:26,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:26,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:26,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:26,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:26,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:26,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:26,376 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:26,376 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642980469] [2021-10-08 18:15:26,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642980469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:26,377 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:26,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-08 18:15:26,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346266227] [2021-10-08 18:15:26,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:26,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:26,379 INFO L87 Difference]: Start difference. First operand 204 states and 621 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:26,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:26,989 INFO L93 Difference]: Finished difference Result 324 states and 873 transitions. [2021-10-08 18:15:26,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:15:26,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:26,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:26,992 INFO L225 Difference]: With dead ends: 324 [2021-10-08 18:15:26,992 INFO L226 Difference]: Without dead ends: 324 [2021-10-08 18:15:26,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 454.9ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:15:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-08 18:15:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 202. [2021-10-08 18:15:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 3.0646766169154227) internal successors, (616), 201 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 616 transitions. [2021-10-08 18:15:27,001 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 616 transitions. Word has length 16 [2021-10-08 18:15:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:27,002 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 616 transitions. [2021-10-08 18:15:27,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 616 transitions. [2021-10-08 18:15:27,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:27,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:27,003 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:27,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:27,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:27,217 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:27,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:27,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1450331339, now seen corresponding path program 16 times [2021-10-08 18:15:27,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:27,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819702589] [2021-10-08 18:15:27,219 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:15:27,219 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:27,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:27,220 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:27,221 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-08 18:15:27,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:15:27,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:27,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:27,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:27,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:27,705 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:27,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819702589] [2021-10-08 18:15:27,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819702589] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:27,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:27,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-08 18:15:27,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168335748] [2021-10-08 18:15:27,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:27,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:27,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:27,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:27,707 INFO L87 Difference]: Start difference. First operand 202 states and 616 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:28,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:28,179 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2021-10-08 18:15:28,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 18:15:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:28,182 INFO L225 Difference]: With dead ends: 290 [2021-10-08 18:15:28,182 INFO L226 Difference]: Without dead ends: 290 [2021-10-08 18:15:28,182 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 282.4ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:15:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-08 18:15:28,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 196. [2021-10-08 18:15:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.051282051282051) internal successors, (595), 195 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:28,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 595 transitions. [2021-10-08 18:15:28,191 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 595 transitions. Word has length 16 [2021-10-08 18:15:28,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:28,191 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 595 transitions. [2021-10-08 18:15:28,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:28,191 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 595 transitions. [2021-10-08 18:15:28,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:28,192 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:28,192 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:28,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:28,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:28,405 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1601915197, now seen corresponding path program 17 times [2021-10-08 18:15:28,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:28,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [877872023] [2021-10-08 18:15:28,407 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:15:28,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:28,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:28,409 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:28,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-08 18:15:28,675 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:15:28,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:28,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:28,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:28,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:28,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:28,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:28,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [877872023] [2021-10-08 18:15:28,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [877872023] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:28,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:28,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-10-08 18:15:28,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826430716] [2021-10-08 18:15:28,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:28,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:28,874 INFO L87 Difference]: Start difference. First operand 196 states and 595 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:29,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:29,288 INFO L93 Difference]: Finished difference Result 310 states and 832 transitions. [2021-10-08 18:15:29,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-08 18:15:29,289 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:29,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:29,292 INFO L225 Difference]: With dead ends: 310 [2021-10-08 18:15:29,292 INFO L226 Difference]: Without dead ends: 310 [2021-10-08 18:15:29,292 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 278.7ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:15:29,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-08 18:15:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 200. [2021-10-08 18:15:29,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 3.07035175879397) internal successors, (611), 199 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:29,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 611 transitions. [2021-10-08 18:15:29,301 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 611 transitions. Word has length 16 [2021-10-08 18:15:29,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:29,301 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 611 transitions. [2021-10-08 18:15:29,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:29,301 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 611 transitions. [2021-10-08 18:15:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:29,302 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:29,302 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:29,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:29,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:29,504 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:29,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1120913521, now seen corresponding path program 18 times [2021-10-08 18:15:29,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:29,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802963552] [2021-10-08 18:15:29,506 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:15:29,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:29,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:29,507 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:29,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-08 18:15:29,804 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 18:15:29,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:29,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:29,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:29,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:29,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:30,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:30,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802963552] [2021-10-08 18:15:30,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [802963552] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:30,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:30,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-08 18:15:30,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909483378] [2021-10-08 18:15:30,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:30,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:30,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:30,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:30,013 INFO L87 Difference]: Start difference. First operand 200 states and 611 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:30,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:30,618 INFO L93 Difference]: Finished difference Result 274 states and 764 transitions. [2021-10-08 18:15:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:15:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:30,621 INFO L225 Difference]: With dead ends: 274 [2021-10-08 18:15:30,621 INFO L226 Difference]: Without dead ends: 274 [2021-10-08 18:15:30,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 475.6ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:15:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-08 18:15:30,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 198. [2021-10-08 18:15:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.0862944162436547) internal successors, (608), 197 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:30,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 608 transitions. [2021-10-08 18:15:30,630 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 608 transitions. Word has length 16 [2021-10-08 18:15:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:30,630 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 608 transitions. [2021-10-08 18:15:30,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 608 transitions. [2021-10-08 18:15:30,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:30,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:30,631 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:30,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:30,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:30,832 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:30,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:30,833 INFO L82 PathProgramCache]: Analyzing trace with hash -567303287, now seen corresponding path program 19 times [2021-10-08 18:15:30,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:30,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1120366583] [2021-10-08 18:15:30,834 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:15:30,835 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:30,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:30,836 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:30,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-08 18:15:31,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:15:31,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:31,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:31,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:31,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:31,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1120366583] [2021-10-08 18:15:31,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1120366583] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:31,324 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:31,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-08 18:15:31,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750304911] [2021-10-08 18:15:31,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:15:31,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:15:31,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:15:31,326 INFO L87 Difference]: Start difference. First operand 198 states and 608 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:31,813 INFO L93 Difference]: Finished difference Result 262 states and 745 transitions. [2021-10-08 18:15:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:15:31,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:31,816 INFO L225 Difference]: With dead ends: 262 [2021-10-08 18:15:31,816 INFO L226 Difference]: Without dead ends: 262 [2021-10-08 18:15:31,817 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 391.0ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:15:31,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-08 18:15:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 192. [2021-10-08 18:15:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.06282722513089) internal successors, (585), 191 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 585 transitions. [2021-10-08 18:15:31,825 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 585 transitions. Word has length 16 [2021-10-08 18:15:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:31,825 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 585 transitions. [2021-10-08 18:15:31,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 585 transitions. [2021-10-08 18:15:31,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-08 18:15:31,826 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:31,826 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:31,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:32,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:32,040 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:32,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:32,041 INFO L82 PathProgramCache]: Analyzing trace with hash -386280253, now seen corresponding path program 20 times [2021-10-08 18:15:32,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:32,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435005688] [2021-10-08 18:15:32,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:15:32,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:32,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:32,043 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:32,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-08 18:15:32,352 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:15:32,353 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:32,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:15:32,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:32,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:32,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:32,537 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435005688] [2021-10-08 18:15:32,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435005688] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:32,538 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:32,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-08 18:15:32,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344838939] [2021-10-08 18:15:32,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-08 18:15:32,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:32,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-08 18:15:32,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-08 18:15:32,540 INFO L87 Difference]: Start difference. First operand 192 states and 585 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:32,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:32,732 INFO L93 Difference]: Finished difference Result 242 states and 701 transitions. [2021-10-08 18:15:32,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:15:32,733 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-08 18:15:32,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:32,734 INFO L225 Difference]: With dead ends: 242 [2021-10-08 18:15:32,734 INFO L226 Difference]: Without dead ends: 242 [2021-10-08 18:15:32,734 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 148.4ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:15:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-08 18:15:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 180. [2021-10-08 18:15:32,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 3.011173184357542) internal successors, (539), 179 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 539 transitions. [2021-10-08 18:15:32,741 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 539 transitions. Word has length 16 [2021-10-08 18:15:32,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:32,741 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 539 transitions. [2021-10-08 18:15:32,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:32,742 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 539 transitions. [2021-10-08 18:15:32,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:15:32,742 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:32,743 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:32,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:32,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:32,956 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:32,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:32,957 INFO L82 PathProgramCache]: Analyzing trace with hash 574402554, now seen corresponding path program 21 times [2021-10-08 18:15:32,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:32,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988141767] [2021-10-08 18:15:32,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:15:32,958 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:32,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:32,959 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:32,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-08 18:15:33,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:15:33,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:33,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:15:33,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:33,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:34,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:34,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:34,761 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988141767] [2021-10-08 18:15:34,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988141767] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:34,761 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:34,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:15:34,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553729916] [2021-10-08 18:15:34,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:15:34,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:15:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:15:34,763 INFO L87 Difference]: Start difference. First operand 180 states and 539 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:39,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:39,334 INFO L93 Difference]: Finished difference Result 410 states and 1116 transitions. [2021-10-08 18:15:39,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:15:39,335 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:15:39,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:39,337 INFO L225 Difference]: With dead ends: 410 [2021-10-08 18:15:39,337 INFO L226 Difference]: Without dead ends: 366 [2021-10-08 18:15:39,338 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 4672.0ms TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:15:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-08 18:15:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 248. [2021-10-08 18:15:39,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.9959514170040484) internal successors, (740), 247 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:39,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 740 transitions. [2021-10-08 18:15:39,348 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 740 transitions. Word has length 17 [2021-10-08 18:15:39,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:39,349 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 740 transitions. [2021-10-08 18:15:39,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:39,349 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 740 transitions. [2021-10-08 18:15:39,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:15:39,350 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:39,350 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:39,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:39,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:39,564 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:39,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash 2083050988, now seen corresponding path program 22 times [2021-10-08 18:15:39,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:39,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977875062] [2021-10-08 18:15:39,566 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:15:39,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:39,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:39,567 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:39,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-08 18:15:39,873 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:15:39,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:39,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:15:39,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:40,401 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:40,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:41,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:41,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:41,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977875062] [2021-10-08 18:15:41,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977875062] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:41,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:41,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:15:41,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531153852] [2021-10-08 18:15:41,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:15:41,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:41,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:15:41,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:15:41,302 INFO L87 Difference]: Start difference. First operand 248 states and 740 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:46,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:46,041 INFO L93 Difference]: Finished difference Result 379 states and 1037 transitions. [2021-10-08 18:15:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-08 18:15:46,043 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:15:46,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:46,045 INFO L225 Difference]: With dead ends: 379 [2021-10-08 18:15:46,045 INFO L226 Difference]: Without dead ends: 366 [2021-10-08 18:15:46,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4251.1ms TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:15:46,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-08 18:15:46,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 266. [2021-10-08 18:15:46,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.0150943396226415) internal successors, (799), 265 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 799 transitions. [2021-10-08 18:15:46,056 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 799 transitions. Word has length 17 [2021-10-08 18:15:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:46,056 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 799 transitions. [2021-10-08 18:15:46,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:46,057 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 799 transitions. [2021-10-08 18:15:46,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:15:46,058 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:46,058 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:46,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:46,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:46,266 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:46,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:46,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1850450548, now seen corresponding path program 23 times [2021-10-08 18:15:46,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:46,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801459730] [2021-10-08 18:15:46,268 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:15:46,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:46,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:46,270 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:46,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-08 18:15:46,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:15:46,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:46,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:15:46,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:46,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:46,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:47,693 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:47,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:47,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801459730] [2021-10-08 18:15:47,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801459730] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:47,694 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:47,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:15:47,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709009049] [2021-10-08 18:15:47,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:15:47,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:47,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:15:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:15:47,696 INFO L87 Difference]: Start difference. First operand 266 states and 799 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:53,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:15:53,877 INFO L93 Difference]: Finished difference Result 452 states and 1238 transitions. [2021-10-08 18:15:53,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:15:53,878 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:15:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:15:53,881 INFO L225 Difference]: With dead ends: 452 [2021-10-08 18:15:53,882 INFO L226 Difference]: Without dead ends: 436 [2021-10-08 18:15:53,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 5044.6ms TimeCoverageRelationStatistics Valid=431, Invalid=2431, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 18:15:53,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-08 18:15:53,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 306. [2021-10-08 18:15:53,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.0721311475409836) internal successors, (937), 305 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:53,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 937 transitions. [2021-10-08 18:15:53,894 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 937 transitions. Word has length 17 [2021-10-08 18:15:53,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:15:53,894 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 937 transitions. [2021-10-08 18:15:53,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:15:53,895 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 937 transitions. [2021-10-08 18:15:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:15:53,896 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:15:53,896 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:15:53,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-08 18:15:54,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:15:54,111 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:15:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:15:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash 942955004, now seen corresponding path program 24 times [2021-10-08 18:15:54,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:15:54,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528904322] [2021-10-08 18:15:54,113 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:15:54,113 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:15:54,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:15:54,114 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:15:54,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-08 18:15:54,471 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:15:54,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:15:54,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:15:54,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:15:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:54,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:15:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:15:55,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:15:55,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528904322] [2021-10-08 18:15:55,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528904322] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:15:55,687 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:15:55,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:15:55,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629926806] [2021-10-08 18:15:55,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:15:55,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:15:55,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:15:55,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:15:55,688 INFO L87 Difference]: Start difference. First operand 306 states and 937 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:02,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:02,655 INFO L93 Difference]: Finished difference Result 511 states and 1417 transitions. [2021-10-08 18:16:02,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-08 18:16:02,657 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:02,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:02,660 INFO L225 Difference]: With dead ends: 511 [2021-10-08 18:16:02,660 INFO L226 Difference]: Without dead ends: 484 [2021-10-08 18:16:02,661 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 6338.2ms TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2021-10-08 18:16:02,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-08 18:16:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 322. [2021-10-08 18:16:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.0903426791277258) internal successors, (992), 321 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:02,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 992 transitions. [2021-10-08 18:16:02,673 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 992 transitions. Word has length 17 [2021-10-08 18:16:02,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:02,674 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 992 transitions. [2021-10-08 18:16:02,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:02,674 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 992 transitions. [2021-10-08 18:16:02,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:02,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:02,675 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:02,688 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2021-10-08 18:16:02,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:02,884 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:02,885 INFO L82 PathProgramCache]: Analyzing trace with hash 450022350, now seen corresponding path program 25 times [2021-10-08 18:16:02,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:02,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157517527] [2021-10-08 18:16:02,886 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:16:02,886 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:02,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:02,887 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:02,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-08 18:16:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:16:03,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:16:03,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:03,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:03,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:04,803 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:04,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:04,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157517527] [2021-10-08 18:16:04,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157517527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:04,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:04,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:16:04,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760199776] [2021-10-08 18:16:04,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:16:04,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:04,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:16:04,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:16:04,805 INFO L87 Difference]: Start difference. First operand 322 states and 992 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:11,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:11,672 INFO L93 Difference]: Finished difference Result 527 states and 1496 transitions. [2021-10-08 18:16:11,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:16:11,674 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 [2021-10-08 18:16:11,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:11,677 INFO L225 Difference]: With dead ends: 527 [2021-10-08 18:16:11,677 INFO L226 Difference]: Without dead ends: 516 [2021-10-08 18:16:11,678 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 6665.0ms TimeCoverageRelationStatistics Valid=604, Invalid=2366, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:16:11,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-08 18:16:11,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 336. [2021-10-08 18:16:11,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.083582089552239) internal successors, (1033), 335 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:11,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1033 transitions. [2021-10-08 18:16:11,690 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1033 transitions. Word has length 17 [2021-10-08 18:16:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:11,690 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1033 transitions. [2021-10-08 18:16:11,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1033 transitions. [2021-10-08 18:16:11,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:11,692 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:11,692 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:11,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:11,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:11,906 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:11,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:11,907 INFO L82 PathProgramCache]: Analyzing trace with hash -272882572, now seen corresponding path program 26 times [2021-10-08 18:16:11,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:11,908 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [580705679] [2021-10-08 18:16:11,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:16:11,908 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:11,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:11,909 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:11,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-08 18:16:12,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:16:12,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:12,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:16:12,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:12,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:13,883 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:13,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:13,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [580705679] [2021-10-08 18:16:13,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [580705679] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:13,884 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:13,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:16:13,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491123678] [2021-10-08 18:16:13,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:16:13,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:13,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:16:13,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:16:13,886 INFO L87 Difference]: Start difference. First operand 336 states and 1033 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:21,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:21,082 INFO L93 Difference]: Finished difference Result 640 states and 1810 transitions. [2021-10-08 18:16:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:16:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:21,088 INFO L225 Difference]: With dead ends: 640 [2021-10-08 18:16:21,088 INFO L226 Difference]: Without dead ends: 628 [2021-10-08 18:16:21,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 6808.7ms TimeCoverageRelationStatistics Valid=649, Invalid=2543, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 18:16:21,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-08 18:16:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 358. [2021-10-08 18:16:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.081232492997199) internal successors, (1100), 357 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1100 transitions. [2021-10-08 18:16:21,103 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1100 transitions. Word has length 17 [2021-10-08 18:16:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:21,103 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1100 transitions. [2021-10-08 18:16:21,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1100 transitions. [2021-10-08 18:16:21,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:21,105 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:21,105 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:21,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:21,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:21,320 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:21,320 INFO L82 PathProgramCache]: Analyzing trace with hash 1838059436, now seen corresponding path program 27 times [2021-10-08 18:16:21,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:21,321 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953358028] [2021-10-08 18:16:21,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:16:21,322 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:21,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:21,323 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:21,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-08 18:16:21,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:16:21,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:21,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:16:21,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:22,071 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:22,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:22,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:22,845 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:22,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953358028] [2021-10-08 18:16:22,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953358028] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:22,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:22,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:16:22,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750782723] [2021-10-08 18:16:22,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:16:22,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:22,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:16:22,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:16:22,847 INFO L87 Difference]: Start difference. First operand 358 states and 1100 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:28,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:28,445 INFO L93 Difference]: Finished difference Result 634 states and 1830 transitions. [2021-10-08 18:16:28,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-08 18:16:28,446 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:28,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:28,450 INFO L225 Difference]: With dead ends: 634 [2021-10-08 18:16:28,450 INFO L226 Difference]: Without dead ends: 604 [2021-10-08 18:16:28,451 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 4821.5ms TimeCoverageRelationStatistics Valid=420, Invalid=2232, Unknown=0, NotChecked=0, Total=2652 [2021-10-08 18:16:28,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-08 18:16:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 444. [2021-10-08 18:16:28,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.239277652370203) internal successors, (1435), 443 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:28,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1435 transitions. [2021-10-08 18:16:28,466 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1435 transitions. Word has length 17 [2021-10-08 18:16:28,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:28,466 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1435 transitions. [2021-10-08 18:16:28,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1435 transitions. [2021-10-08 18:16:28,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:28,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:28,468 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:28,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:28,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:28,683 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:28,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1605458996, now seen corresponding path program 28 times [2021-10-08 18:16:28,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:28,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1729106732] [2021-10-08 18:16:28,684 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:16:28,685 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:28,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:28,686 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:28,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-08 18:16:29,054 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:16:29,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:29,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:16:29,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:29,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:30,677 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:30,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1729106732] [2021-10-08 18:16:30,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1729106732] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:30,677 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:30,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:16:30,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172828583] [2021-10-08 18:16:30,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:16:30,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:16:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:16:30,679 INFO L87 Difference]: Start difference. First operand 444 states and 1435 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:37,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:37,311 INFO L93 Difference]: Finished difference Result 632 states and 1879 transitions. [2021-10-08 18:16:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:16:37,313 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:37,316 INFO L225 Difference]: With dead ends: 632 [2021-10-08 18:16:37,316 INFO L226 Difference]: Without dead ends: 616 [2021-10-08 18:16:37,317 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 6428.4ms TimeCoverageRelationStatistics Valid=723, Invalid=2033, Unknown=0, NotChecked=0, Total=2756 [2021-10-08 18:16:37,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-08 18:16:37,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 442. [2021-10-08 18:16:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.2154195011337867) internal successors, (1418), 441 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:37,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1418 transitions. [2021-10-08 18:16:37,333 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1418 transitions. Word has length 17 [2021-10-08 18:16:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:37,334 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1418 transitions. [2021-10-08 18:16:37,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:37,334 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1418 transitions. [2021-10-08 18:16:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:37,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:37,336 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:37,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2021-10-08 18:16:37,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:37,550 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:37,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:37,551 INFO L82 PathProgramCache]: Analyzing trace with hash 749557696, now seen corresponding path program 29 times [2021-10-08 18:16:37,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:37,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124748975] [2021-10-08 18:16:37,552 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:16:37,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:37,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:37,553 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:37,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-08 18:16:37,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:16:37,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:37,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:16:37,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:38,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:38,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:38,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:38,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124748975] [2021-10-08 18:16:38,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124748975] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:38,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:38,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:16:38,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202088538] [2021-10-08 18:16:38,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:16:38,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:38,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:16:38,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:16:38,975 INFO L87 Difference]: Start difference. First operand 442 states and 1418 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:40,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:40,408 INFO L93 Difference]: Finished difference Result 487 states and 1500 transitions. [2021-10-08 18:16:40,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:16:40,409 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:40,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:40,412 INFO L225 Difference]: With dead ends: 487 [2021-10-08 18:16:40,413 INFO L226 Difference]: Without dead ends: 474 [2021-10-08 18:16:40,413 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1284.9ms TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:16:40,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-08 18:16:40,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 430. [2021-10-08 18:16:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.1888111888111887) internal successors, (1368), 429 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:40,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1368 transitions. [2021-10-08 18:16:40,425 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1368 transitions. Word has length 17 [2021-10-08 18:16:40,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:40,426 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1368 transitions. [2021-10-08 18:16:40,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1368 transitions. [2021-10-08 18:16:40,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:40,428 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:40,428 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:40,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:40,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:40,643 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:40,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:40,643 INFO L82 PathProgramCache]: Analyzing trace with hash -13578828, now seen corresponding path program 30 times [2021-10-08 18:16:40,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:40,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1971272421] [2021-10-08 18:16:40,644 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:16:40,644 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:40,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:40,646 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:40,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-08 18:16:41,043 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 18:16:41,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:41,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:16:41,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:41,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:41,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:43,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:43,073 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:43,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1971272421] [2021-10-08 18:16:43,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1971272421] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:43,074 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:43,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:16:43,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080240641] [2021-10-08 18:16:43,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:16:43,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:16:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:16:43,076 INFO L87 Difference]: Start difference. First operand 430 states and 1368 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:48,149 INFO L93 Difference]: Finished difference Result 563 states and 1679 transitions. [2021-10-08 18:16:48,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-08 18:16:48,150 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:48,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:48,153 INFO L225 Difference]: With dead ends: 563 [2021-10-08 18:16:48,154 INFO L226 Difference]: Without dead ends: 542 [2021-10-08 18:16:48,155 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 5312.8ms TimeCoverageRelationStatistics Valid=359, Invalid=1621, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:16:48,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-08 18:16:48,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 394. [2021-10-08 18:16:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.114503816793893) internal successors, (1224), 393 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2021-10-08 18:16:48,172 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 17 [2021-10-08 18:16:48,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:48,172 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2021-10-08 18:16:48,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2021-10-08 18:16:48,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:48,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:48,174 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:48,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:48,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:48,388 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:48,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:48,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1118152384, now seen corresponding path program 31 times [2021-10-08 18:16:48,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:48,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490118322] [2021-10-08 18:16:48,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:16:48,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:48,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:48,391 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:48,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-08 18:16:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:16:48,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-08 18:16:48,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:16:48,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:16:49,025 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:49,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490118322] [2021-10-08 18:16:49,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1490118322] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:49,026 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:49,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-10-08 18:16:49,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078092319] [2021-10-08 18:16:49,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:16:49,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:49,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:16:49,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:16:49,027 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:49,678 INFO L93 Difference]: Finished difference Result 414 states and 1265 transitions. [2021-10-08 18:16:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:16:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:49,681 INFO L225 Difference]: With dead ends: 414 [2021-10-08 18:16:49,682 INFO L226 Difference]: Without dead ends: 410 [2021-10-08 18:16:49,682 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 523.6ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:16:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-08 18:16:49,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 390. [2021-10-08 18:16:49,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.1105398457583546) internal successors, (1210), 389 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:49,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1210 transitions. [2021-10-08 18:16:49,693 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1210 transitions. Word has length 17 [2021-10-08 18:16:49,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:49,693 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 1210 transitions. [2021-10-08 18:16:49,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:49,694 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1210 transitions. [2021-10-08 18:16:49,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:49,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:49,695 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:49,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-08 18:16:49,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:49,910 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:49,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1974858746, now seen corresponding path program 32 times [2021-10-08 18:16:49,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:49,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672720500] [2021-10-08 18:16:49,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:16:49,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:49,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:49,913 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:49,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-08 18:16:50,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:16:50,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:16:50,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:16:50,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:16:50,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:50,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:16:52,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:16:52,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:16:52,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672720500] [2021-10-08 18:16:52,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1672720500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:16:52,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:16:52,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:16:52,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626050617] [2021-10-08 18:16:52,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:16:52,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:16:52,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:16:52,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:16:52,095 INFO L87 Difference]: Start difference. First operand 390 states and 1210 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:59,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:16:59,386 INFO L93 Difference]: Finished difference Result 646 states and 1853 transitions. [2021-10-08 18:16:59,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:16:59,388 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:16:59,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:16:59,391 INFO L225 Difference]: With dead ends: 646 [2021-10-08 18:16:59,391 INFO L226 Difference]: Without dead ends: 620 [2021-10-08 18:16:59,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 7301.3ms TimeCoverageRelationStatistics Valid=649, Invalid=2543, Unknown=0, NotChecked=0, Total=3192 [2021-10-08 18:16:59,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-08 18:16:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 420. [2021-10-08 18:16:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.143198090692124) internal successors, (1317), 419 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:59,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1317 transitions. [2021-10-08 18:16:59,407 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1317 transitions. Word has length 17 [2021-10-08 18:16:59,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:16:59,407 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1317 transitions. [2021-10-08 18:16:59,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:16:59,407 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1317 transitions. [2021-10-08 18:16:59,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:16:59,409 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:16:59,409 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:16:59,423 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2021-10-08 18:16:59,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:16:59,622 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:16:59,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:16:59,623 INFO L82 PathProgramCache]: Analyzing trace with hash 886357006, now seen corresponding path program 33 times [2021-10-08 18:16:59,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:16:59,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238824118] [2021-10-08 18:16:59,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:16:59,624 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:16:59,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:16:59,625 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:16:59,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-08 18:17:00,110 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:17:00,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:00,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:17:00,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:00,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:01,534 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:01,534 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:01,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238824118] [2021-10-08 18:17:01,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238824118] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:01,535 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:17:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364090503] [2021-10-08 18:17:01,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:17:01,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:01,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:17:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:17:01,536 INFO L87 Difference]: Start difference. First operand 420 states and 1317 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:07,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:07,406 INFO L93 Difference]: Finished difference Result 571 states and 1674 transitions. [2021-10-08 18:17:07,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-08 18:17:07,407 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:17:07,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:07,410 INFO L225 Difference]: With dead ends: 571 [2021-10-08 18:17:07,410 INFO L226 Difference]: Without dead ends: 546 [2021-10-08 18:17:07,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 5505.1ms TimeCoverageRelationStatistics Valid=422, Invalid=2548, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:17:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-08 18:17:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 418. [2021-10-08 18:17:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 3.13189448441247) internal successors, (1306), 417 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:07,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2021-10-08 18:17:07,423 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 17 [2021-10-08 18:17:07,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:07,424 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2021-10-08 18:17:07,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:07,424 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2021-10-08 18:17:07,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:07,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:07,425 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:07,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:07,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:07,640 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash 123220482, now seen corresponding path program 34 times [2021-10-08 18:17:07,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:07,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142743934] [2021-10-08 18:17:07,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:17:07,642 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:07,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:07,643 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:07,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-08 18:17:08,110 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:17:08,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:08,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:17:08,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:08,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:09,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:09,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142743934] [2021-10-08 18:17:09,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142743934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:09,334 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:09,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:17:09,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955618216] [2021-10-08 18:17:09,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:17:09,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:09,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:17:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:17:09,336 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:11,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:11,657 INFO L93 Difference]: Finished difference Result 459 states and 1375 transitions. [2021-10-08 18:17:11,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:17:11,659 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:17:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:11,662 INFO L225 Difference]: With dead ends: 459 [2021-10-08 18:17:11,662 INFO L226 Difference]: Without dead ends: 448 [2021-10-08 18:17:11,662 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2451.4ms TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 18:17:11,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-08 18:17:11,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 420. [2021-10-08 18:17:11,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.1097852028639617) internal successors, (1303), 419 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:11,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1303 transitions. [2021-10-08 18:17:11,673 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1303 transitions. Word has length 17 [2021-10-08 18:17:11,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:11,674 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1303 transitions. [2021-10-08 18:17:11,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:11,674 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1303 transitions. [2021-10-08 18:17:11,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:11,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:11,676 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:11,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:11,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:11,890 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:11,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:11,891 INFO L82 PathProgramCache]: Analyzing trace with hash 868405076, now seen corresponding path program 35 times [2021-10-08 18:17:11,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:11,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1317106709] [2021-10-08 18:17:11,892 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:17:11,892 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:11,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:11,893 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:11,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-08 18:17:12,351 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:17:12,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:12,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:17:12,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:12,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:13,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:13,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:13,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1317106709] [2021-10-08 18:17:13,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1317106709] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:13,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:13,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:17:13,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899903209] [2021-10-08 18:17:13,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:17:13,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:13,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:17:13,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:17:13,421 INFO L87 Difference]: Start difference. First operand 420 states and 1303 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:14,875 INFO L93 Difference]: Finished difference Result 467 states and 1420 transitions. [2021-10-08 18:17:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:17:14,877 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 17 [2021-10-08 18:17:14,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:14,881 INFO L225 Difference]: With dead ends: 467 [2021-10-08 18:17:14,882 INFO L226 Difference]: Without dead ends: 458 [2021-10-08 18:17:14,882 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1367.2ms TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-08 18:17:14,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-08 18:17:14,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 432. [2021-10-08 18:17:14,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.1067285382830625) internal successors, (1339), 431 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:14,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1339 transitions. [2021-10-08 18:17:14,892 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1339 transitions. Word has length 17 [2021-10-08 18:17:14,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:14,892 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1339 transitions. [2021-10-08 18:17:14,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:14,892 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1339 transitions. [2021-10-08 18:17:14,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:14,894 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:14,894 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:14,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:15,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:15,099 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:15,099 INFO L82 PathProgramCache]: Analyzing trace with hash 105268552, now seen corresponding path program 36 times [2021-10-08 18:17:15,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:15,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771803979] [2021-10-08 18:17:15,100 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:17:15,100 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:15,102 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:15,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-08 18:17:15,608 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-08 18:17:15,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:15,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-08 18:17:15,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:16,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:17,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:17,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:17,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771803979] [2021-10-08 18:17:17,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [771803979] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:17,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:17,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-08 18:17:17,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606106308] [2021-10-08 18:17:17,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-08 18:17:17,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:17,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-08 18:17:17,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-08 18:17:17,167 INFO L87 Difference]: Start difference. First operand 432 states and 1339 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:23,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:23,559 INFO L93 Difference]: Finished difference Result 855 states and 2671 transitions. [2021-10-08 18:17:23,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-08 18:17:23,560 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 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 17 [2021-10-08 18:17:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:23,566 INFO L225 Difference]: With dead ends: 855 [2021-10-08 18:17:23,566 INFO L226 Difference]: Without dead ends: 834 [2021-10-08 18:17:23,567 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 6101.1ms TimeCoverageRelationStatistics Valid=426, Invalid=2544, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:17:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-10-08 18:17:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 432. [2021-10-08 18:17:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.102088167053364) internal successors, (1337), 431 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:23,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1337 transitions. [2021-10-08 18:17:23,579 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1337 transitions. Word has length 17 [2021-10-08 18:17:23,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:23,579 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1337 transitions. [2021-10-08 18:17:23,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:23,579 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1337 transitions. [2021-10-08 18:17:23,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:23,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:23,581 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:23,595 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-10-08 18:17:23,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:23,794 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:23,795 INFO L82 PathProgramCache]: Analyzing trace with hash -2025147552, now seen corresponding path program 37 times [2021-10-08 18:17:23,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:23,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [856249004] [2021-10-08 18:17:23,796 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:17:23,796 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:23,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:23,797 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:23,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-08 18:17:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:17:24,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:17:24,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:24,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:25,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:25,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:25,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [856249004] [2021-10-08 18:17:25,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [856249004] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:25,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:25,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:17:25,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023248193] [2021-10-08 18:17:25,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:17:25,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:17:25,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:17:25,682 INFO L87 Difference]: Start difference. First operand 432 states and 1337 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:27,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:27,409 INFO L93 Difference]: Finished difference Result 571 states and 1778 transitions. [2021-10-08 18:17:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-08 18:17:27,409 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:17:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:27,414 INFO L225 Difference]: With dead ends: 571 [2021-10-08 18:17:27,414 INFO L226 Difference]: Without dead ends: 558 [2021-10-08 18:17:27,415 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 2010.8ms TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:17:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-08 18:17:27,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 432. [2021-10-08 18:17:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.097447795823666) internal successors, (1335), 431 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:27,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1335 transitions. [2021-10-08 18:17:27,429 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1335 transitions. Word has length 17 [2021-10-08 18:17:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:27,429 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1335 transitions. [2021-10-08 18:17:27,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1335 transitions. [2021-10-08 18:17:27,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:27,431 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:27,431 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:27,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:27,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:27,644 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:27,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:27,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1784450246, now seen corresponding path program 38 times [2021-10-08 18:17:27,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:27,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [599621462] [2021-10-08 18:17:27,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:17:27,646 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:27,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:27,647 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:27,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-08 18:17:28,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:17:28,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:28,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-08 18:17:28,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:28,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:28,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:29,897 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:29,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [599621462] [2021-10-08 18:17:29,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [599621462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:29,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:29,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:17:29,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883692847] [2021-10-08 18:17:29,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:17:29,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:17:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:17:29,900 INFO L87 Difference]: Start difference. First operand 432 states and 1335 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:39,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:39,723 INFO L93 Difference]: Finished difference Result 862 states and 2464 transitions. [2021-10-08 18:17:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-08 18:17:39,725 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:17:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:39,730 INFO L225 Difference]: With dead ends: 862 [2021-10-08 18:17:39,731 INFO L226 Difference]: Without dead ends: 840 [2021-10-08 18:17:39,731 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 8926.0ms TimeCoverageRelationStatistics Valid=921, Invalid=3635, Unknown=0, NotChecked=0, Total=4556 [2021-10-08 18:17:39,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-10-08 18:17:39,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 526. [2021-10-08 18:17:39,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.196190476190476) internal successors, (1678), 525 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:39,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1678 transitions. [2021-10-08 18:17:39,749 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1678 transitions. Word has length 17 [2021-10-08 18:17:39,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:39,749 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1678 transitions. [2021-10-08 18:17:39,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:39,749 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1678 transitions. [2021-10-08 18:17:39,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:39,750 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:39,751 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:39,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:39,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:39,960 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:39,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:39,960 INFO L82 PathProgramCache]: Analyzing trace with hash -2017050686, now seen corresponding path program 39 times [2021-10-08 18:17:39,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:39,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163586588] [2021-10-08 18:17:39,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:17:39,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:39,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:39,963 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:39,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-08 18:17:40,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:17:40,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:40,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:17:40,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:40,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:17:40,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-08 18:17:41,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:41,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163586588] [2021-10-08 18:17:41,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163586588] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:41,219 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:41,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:17:41,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526991545] [2021-10-08 18:17:41,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:17:41,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:17:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:17:41,220 INFO L87 Difference]: Start difference. First operand 526 states and 1678 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:41,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:41,655 INFO L93 Difference]: Finished difference Result 577 states and 1806 transitions. [2021-10-08 18:17:41,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:17:41,655 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:17:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:41,665 INFO L225 Difference]: With dead ends: 577 [2021-10-08 18:17:41,666 INFO L226 Difference]: Without dead ends: 556 [2021-10-08 18:17:41,666 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 281.8ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:17:41,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-08 18:17:41,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 404. [2021-10-08 18:17:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.826302729528536) internal successors, (1139), 403 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1139 transitions. [2021-10-08 18:17:41,687 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1139 transitions. Word has length 17 [2021-10-08 18:17:41,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:41,687 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1139 transitions. [2021-10-08 18:17:41,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:41,687 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1139 transitions. [2021-10-08 18:17:41,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-08 18:17:41,689 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:41,689 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:41,705 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-08 18:17:41,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:41,905 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:41,906 INFO L82 PathProgramCache]: Analyzing trace with hash 658878786, now seen corresponding path program 40 times [2021-10-08 18:17:41,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:41,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960261015] [2021-10-08 18:17:41,907 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:17:41,907 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:41,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:41,908 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:41,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-08 18:17:42,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:17:42,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:42,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-08 18:17:42,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:42,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:42,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:43,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:43,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960261015] [2021-10-08 18:17:43,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960261015] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:43,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:43,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-08 18:17:43,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183493009] [2021-10-08 18:17:43,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-08 18:17:43,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:43,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-08 18:17:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-08 18:17:43,633 INFO L87 Difference]: Start difference. First operand 404 states and 1139 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:44,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:44,690 INFO L93 Difference]: Finished difference Result 449 states and 1243 transitions. [2021-10-08 18:17:44,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-08 18:17:44,692 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-08 18:17:44,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:44,695 INFO L225 Difference]: With dead ends: 449 [2021-10-08 18:17:44,695 INFO L226 Difference]: Without dead ends: 438 [2021-10-08 18:17:44,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1359.8ms TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-10-08 18:17:44,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-08 18:17:44,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 404. [2021-10-08 18:17:44,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.8213399503722085) internal successors, (1137), 403 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:44,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1137 transitions. [2021-10-08 18:17:44,706 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1137 transitions. Word has length 17 [2021-10-08 18:17:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:44,706 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1137 transitions. [2021-10-08 18:17:44,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1137 transitions. [2021-10-08 18:17:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:44,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:44,707 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:44,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:44,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:44,908 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:44,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash -620745253, now seen corresponding path program 41 times [2021-10-08 18:17:44,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:44,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [38424612] [2021-10-08 18:17:44,910 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:17:44,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:44,911 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:44,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-08 18:17:45,453 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:17:45,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:45,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:17:45,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:45,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:45,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:45,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [38424612] [2021-10-08 18:17:45,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [38424612] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:45,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:45,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-10-08 18:17:45,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273350988] [2021-10-08 18:17:45,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:17:45,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:45,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:17:45,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:17:45,751 INFO L87 Difference]: Start difference. First operand 404 states and 1137 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:46,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:46,187 INFO L93 Difference]: Finished difference Result 512 states and 1360 transitions. [2021-10-08 18:17:46,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-08 18:17:46,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:17:46,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:46,192 INFO L225 Difference]: With dead ends: 512 [2021-10-08 18:17:46,192 INFO L226 Difference]: Without dead ends: 512 [2021-10-08 18:17:46,193 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 356.9ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:17:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-08 18:17:46,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 400. [2021-10-08 18:17:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.8095238095238093) internal successors, (1121), 399 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1121 transitions. [2021-10-08 18:17:46,203 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1121 transitions. Word has length 18 [2021-10-08 18:17:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:46,203 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1121 transitions. [2021-10-08 18:17:46,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1121 transitions. [2021-10-08 18:17:46,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:46,204 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:46,204 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:46,216 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:46,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:46,405 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:46,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:46,406 INFO L82 PathProgramCache]: Analyzing trace with hash -446780471, now seen corresponding path program 42 times [2021-10-08 18:17:46,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:46,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044546403] [2021-10-08 18:17:46,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:17:46,407 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:46,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:46,408 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:46,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-08 18:17:46,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:17:46,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:46,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:17:46,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:47,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:47,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:47,347 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:47,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2044546403] [2021-10-08 18:17:47,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2044546403] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:47,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:47,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-08 18:17:47,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764015169] [2021-10-08 18:17:47,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:17:47,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:47,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:17:47,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:17:47,349 INFO L87 Difference]: Start difference. First operand 400 states and 1121 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:48,639 INFO L93 Difference]: Finished difference Result 572 states and 1478 transitions. [2021-10-08 18:17:48,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:17:48,640 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:17:48,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:48,642 INFO L225 Difference]: With dead ends: 572 [2021-10-08 18:17:48,642 INFO L226 Difference]: Without dead ends: 572 [2021-10-08 18:17:48,643 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1097.7ms TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-10-08 18:17:48,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-08 18:17:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 400. [2021-10-08 18:17:48,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.8095238095238093) internal successors, (1121), 399 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1121 transitions. [2021-10-08 18:17:48,651 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1121 transitions. Word has length 18 [2021-10-08 18:17:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:48,652 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1121 transitions. [2021-10-08 18:17:48,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1121 transitions. [2021-10-08 18:17:48,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:48,653 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:48,653 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:48,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:48,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:48,856 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1867039915, now seen corresponding path program 43 times [2021-10-08 18:17:48,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:48,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484337137] [2021-10-08 18:17:48,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:17:48,857 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:48,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:48,859 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:48,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-08 18:17:49,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:17:49,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:17:49,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:49,524 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:49,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:49,822 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:49,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484337137] [2021-10-08 18:17:49,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484337137] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:49,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:49,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-08 18:17:49,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484106947] [2021-10-08 18:17:49,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-08 18:17:49,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-08 18:17:49,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-08 18:17:49,824 INFO L87 Difference]: Start difference. First operand 400 states and 1121 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:51,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:51,503 INFO L93 Difference]: Finished difference Result 598 states and 1493 transitions. [2021-10-08 18:17:51,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-08 18:17:51,504 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:17:51,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:51,506 INFO L225 Difference]: With dead ends: 598 [2021-10-08 18:17:51,506 INFO L226 Difference]: Without dead ends: 598 [2021-10-08 18:17:51,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1220.9ms TimeCoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2021-10-08 18:17:51,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-08 18:17:51,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 384. [2021-10-08 18:17:51,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.77023498694517) internal successors, (1061), 383 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1061 transitions. [2021-10-08 18:17:51,517 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1061 transitions. Word has length 18 [2021-10-08 18:17:51,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:51,517 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1061 transitions. [2021-10-08 18:17:51,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:51,518 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1061 transitions. [2021-10-08 18:17:51,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:51,518 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:51,518 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:51,530 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Ended with exit code 0 [2021-10-08 18:17:51,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:51,719 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:51,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:51,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1430017607, now seen corresponding path program 44 times [2021-10-08 18:17:51,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:51,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [759015039] [2021-10-08 18:17:51,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:17:51,721 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:51,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:51,722 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:51,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-08 18:17:52,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:17:52,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:52,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:17:52,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:52,430 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:52,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:52,668 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:52,669 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:52,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [759015039] [2021-10-08 18:17:52,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [759015039] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:52,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:52,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-08 18:17:52,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344020494] [2021-10-08 18:17:52,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:17:52,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:52,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:17:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:17:52,671 INFO L87 Difference]: Start difference. First operand 384 states and 1061 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:54,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:54,314 INFO L93 Difference]: Finished difference Result 594 states and 1542 transitions. [2021-10-08 18:17:54,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:17:54,315 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:17:54,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:54,317 INFO L225 Difference]: With dead ends: 594 [2021-10-08 18:17:54,317 INFO L226 Difference]: Without dead ends: 594 [2021-10-08 18:17:54,318 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1285.2ms TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-10-08 18:17:54,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-10-08 18:17:54,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 394. [2021-10-08 18:17:54,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 2.7888040712468194) internal successors, (1096), 393 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1096 transitions. [2021-10-08 18:17:54,327 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1096 transitions. Word has length 18 [2021-10-08 18:17:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:54,327 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1096 transitions. [2021-10-08 18:17:54,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:54,328 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1096 transitions. [2021-10-08 18:17:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:54,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:54,329 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:54,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2021-10-08 18:17:54,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:54,529 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:54,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:54,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1845597751, now seen corresponding path program 45 times [2021-10-08 18:17:54,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:54,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077657434] [2021-10-08 18:17:54,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:17:54,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:54,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:54,533 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:54,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-08 18:17:55,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:17:55,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:55,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:17:55,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:55,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:17:55,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:55,617 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-08 18:17:55,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:55,618 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077657434] [2021-10-08 18:17:55,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077657434] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-08 18:17:55,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-08 18:17:55,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-08 18:17:55,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314660996] [2021-10-08 18:17:55,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-08 18:17:55,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:55,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-08 18:17:55,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:17:55,620 INFO L87 Difference]: Start difference. First operand 394 states and 1096 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:55,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:55,728 INFO L93 Difference]: Finished difference Result 415 states and 1136 transitions. [2021-10-08 18:17:55,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:17:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:17:55,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:55,729 INFO L225 Difference]: With dead ends: 415 [2021-10-08 18:17:55,730 INFO L226 Difference]: Without dead ends: 372 [2021-10-08 18:17:55,730 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 216.6ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:17:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-08 18:17:55,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 252. [2021-10-08 18:17:55,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.49800796812749) internal successors, (627), 251 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:55,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 627 transitions. [2021-10-08 18:17:55,736 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 627 transitions. Word has length 18 [2021-10-08 18:17:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:55,736 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 627 transitions. [2021-10-08 18:17:55,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 627 transitions. [2021-10-08 18:17:55,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:55,737 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:55,737 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:55,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-08 18:17:55,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:55,938 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:55,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:55,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1162012083, now seen corresponding path program 46 times [2021-10-08 18:17:55,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:55,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [190925602] [2021-10-08 18:17:55,939 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:17:55,940 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:55,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:55,941 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:55,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-08 18:17:56,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:17:56,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:56,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:17:56,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:56,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:56,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:56,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:56,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [190925602] [2021-10-08 18:17:56,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [190925602] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:56,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:56,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-10-08 18:17:56,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998587515] [2021-10-08 18:17:56,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:17:56,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:56,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:17:56,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:17:56,833 INFO L87 Difference]: Start difference. First operand 252 states and 627 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:58,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:17:58,198 INFO L93 Difference]: Finished difference Result 406 states and 979 transitions. [2021-10-08 18:17:58,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:17:58,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:17:58,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:17:58,200 INFO L225 Difference]: With dead ends: 406 [2021-10-08 18:17:58,200 INFO L226 Difference]: Without dead ends: 398 [2021-10-08 18:17:58,200 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1152.7ms TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2021-10-08 18:17:58,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-08 18:17:58,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 250. [2021-10-08 18:17:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.497991967871486) internal successors, (622), 249 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 622 transitions. [2021-10-08 18:17:58,208 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 622 transitions. Word has length 18 [2021-10-08 18:17:58,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:17:58,209 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 622 transitions. [2021-10-08 18:17:58,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:17:58,209 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 622 transitions. [2021-10-08 18:17:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:17:58,210 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:17:58,210 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:17:58,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-08 18:17:58,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:17:58,423 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:17:58,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:17:58,423 INFO L82 PathProgramCache]: Analyzing trace with hash 57658325, now seen corresponding path program 47 times [2021-10-08 18:17:58,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:17:58,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [707745318] [2021-10-08 18:17:58,424 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:17:58,425 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:17:58,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:17:58,426 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:17:58,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-08 18:17:59,009 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:17:59,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:17:59,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:17:59,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:17:59,091 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:59,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:17:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:17:59,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:17:59,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [707745318] [2021-10-08 18:17:59,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [707745318] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:17:59,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:17:59,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-10-08 18:17:59,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449823162] [2021-10-08 18:17:59,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:17:59,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:17:59,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:17:59,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:17:59,363 INFO L87 Difference]: Start difference. First operand 250 states and 622 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:00,861 INFO L93 Difference]: Finished difference Result 424 states and 1015 transitions. [2021-10-08 18:18:00,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 18:18:00,861 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:18:00,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:00,862 INFO L225 Difference]: With dead ends: 424 [2021-10-08 18:18:00,862 INFO L226 Difference]: Without dead ends: 424 [2021-10-08 18:18:00,862 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1289.8ms TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2021-10-08 18:18:00,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-08 18:18:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 296. [2021-10-08 18:18:00,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.511864406779661) internal successors, (741), 295 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:00,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 741 transitions. [2021-10-08 18:18:00,871 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 741 transitions. Word has length 18 [2021-10-08 18:18:00,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:00,872 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 741 transitions. [2021-10-08 18:18:00,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:00,872 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 741 transitions. [2021-10-08 18:18:00,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:18:00,872 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:00,873 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:00,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:01,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:01,073 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:01,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:01,074 INFO L82 PathProgramCache]: Analyzing trace with hash -2012883997, now seen corresponding path program 48 times [2021-10-08 18:18:01,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:01,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496076322] [2021-10-08 18:18:01,076 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:18:01,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:01,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:01,078 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:01,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-08 18:18:01,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:18:01,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:01,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:18:01,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:01,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:01,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:01,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496076322] [2021-10-08 18:18:01,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496076322] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:01,997 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:01,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-10-08 18:18:01,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518314765] [2021-10-08 18:18:01,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:18:01,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:01,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:18:01,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:18:01,998 INFO L87 Difference]: Start difference. First operand 296 states and 741 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:03,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:03,017 INFO L93 Difference]: Finished difference Result 418 states and 1011 transitions. [2021-10-08 18:18:03,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-08 18:18:03,018 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:18:03,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:03,019 INFO L225 Difference]: With dead ends: 418 [2021-10-08 18:18:03,019 INFO L226 Difference]: Without dead ends: 410 [2021-10-08 18:18:03,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 857.5ms TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:18:03,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-08 18:18:03,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 290. [2021-10-08 18:18:03,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.491349480968858) internal successors, (720), 289 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) [2021-10-08 18:18:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 720 transitions. [2021-10-08 18:18:03,027 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 720 transitions. Word has length 18 [2021-10-08 18:18:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:03,028 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 720 transitions. [2021-10-08 18:18:03,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 720 transitions. [2021-10-08 18:18:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:18:03,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:03,029 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:03,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:03,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:03,231 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:03,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:03,232 INFO L82 PathProgramCache]: Analyzing trace with hash 178889565, now seen corresponding path program 49 times [2021-10-08 18:18:03,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:03,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659280020] [2021-10-08 18:18:03,233 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:18:03,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:03,234 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:03,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-08 18:18:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:18:03,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:18:03,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:03,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:04,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:04,097 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:04,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659280020] [2021-10-08 18:18:04,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659280020] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:04,098 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:04,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-08 18:18:04,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321575611] [2021-10-08 18:18:04,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:18:04,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:04,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:18:04,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:18:04,099 INFO L87 Difference]: Start difference. First operand 290 states and 720 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:04,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:04,998 INFO L93 Difference]: Finished difference Result 366 states and 890 transitions. [2021-10-08 18:18:04,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-08 18:18:04,999 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:18:04,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:05,000 INFO L225 Difference]: With dead ends: 366 [2021-10-08 18:18:05,000 INFO L226 Difference]: Without dead ends: 366 [2021-10-08 18:18:05,000 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 753.4ms TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2021-10-08 18:18:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-08 18:18:05,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 294. [2021-10-08 18:18:05,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.5119453924914676) internal successors, (736), 293 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 736 transitions. [2021-10-08 18:18:05,006 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 736 transitions. Word has length 18 [2021-10-08 18:18:05,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:05,006 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 736 transitions. [2021-10-08 18:18:05,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:05,006 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 736 transitions. [2021-10-08 18:18:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-08 18:18:05,007 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:05,007 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:05,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:05,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:05,208 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:05,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:05,209 INFO L82 PathProgramCache]: Analyzing trace with hash 1768978997, now seen corresponding path program 50 times [2021-10-08 18:18:05,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:05,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178670753] [2021-10-08 18:18:05,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:18:05,210 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:05,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:05,211 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:05,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-08 18:18:05,794 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:18:05,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:05,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:18:05,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:05,933 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:05,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:06,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:06,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178670753] [2021-10-08 18:18:06,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178670753] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:06,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:06,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-10-08 18:18:06,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336014647] [2021-10-08 18:18:06,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-08 18:18:06,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-08 18:18:06,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-08 18:18:06,111 INFO L87 Difference]: Start difference. First operand 294 states and 736 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:06,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:06,582 INFO L93 Difference]: Finished difference Result 378 states and 940 transitions. [2021-10-08 18:18:06,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-08 18:18:06,583 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-08 18:18:06,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:06,584 INFO L225 Difference]: With dead ends: 378 [2021-10-08 18:18:06,584 INFO L226 Difference]: Without dead ends: 378 [2021-10-08 18:18:06,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 394.3ms TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:18:06,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-08 18:18:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 286. [2021-10-08 18:18:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.4842105263157896) internal successors, (708), 285 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:06,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 708 transitions. [2021-10-08 18:18:06,590 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 708 transitions. Word has length 18 [2021-10-08 18:18:06,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:06,590 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 708 transitions. [2021-10-08 18:18:06,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:06,590 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 708 transitions. [2021-10-08 18:18:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:06,591 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:06,591 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:06,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:06,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:06,792 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:06,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:06,793 INFO L82 PathProgramCache]: Analyzing trace with hash -113664492, now seen corresponding path program 51 times [2021-10-08 18:18:06,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:06,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514226160] [2021-10-08 18:18:06,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:18:06,794 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:06,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:06,795 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:06,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-08 18:18:07,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-08 18:18:07,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:07,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:18:07,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:07,687 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:18:07,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:08,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:18:08,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:08,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514226160] [2021-10-08 18:18:08,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514226160] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:08,186 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:08,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:18:08,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500644425] [2021-10-08 18:18:08,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:18:08,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:08,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:18:08,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:18:08,188 INFO L87 Difference]: Start difference. First operand 286 states and 708 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:08,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:08,379 INFO L93 Difference]: Finished difference Result 321 states and 782 transitions. [2021-10-08 18:18:08,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:18:08,380 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 19 [2021-10-08 18:18:08,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:08,380 INFO L225 Difference]: With dead ends: 321 [2021-10-08 18:18:08,380 INFO L226 Difference]: Without dead ends: 140 [2021-10-08 18:18:08,381 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 276.7ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:18:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-08 18:18:08,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 90. [2021-10-08 18:18:08,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 89 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:08,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 186 transitions. [2021-10-08 18:18:08,383 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 186 transitions. Word has length 19 [2021-10-08 18:18:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:08,383 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 186 transitions. [2021-10-08 18:18:08,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 186 transitions. [2021-10-08 18:18:08,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:08,383 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:08,383 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:08,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:08,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:08,586 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:08,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:08,586 INFO L82 PathProgramCache]: Analyzing trace with hash -346264932, now seen corresponding path program 52 times [2021-10-08 18:18:08,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:08,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308731576] [2021-10-08 18:18:08,587 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:18:08,587 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:08,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:08,589 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:08,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-08 18:18:09,137 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:18:09,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:09,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:18:09,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:09,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:09,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:11,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:11,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:11,402 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308731576] [2021-10-08 18:18:11,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308731576] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:11,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:11,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 18:18:11,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196940358] [2021-10-08 18:18:11,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 18:18:11,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:11,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 18:18:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:18:11,404 INFO L87 Difference]: Start difference. First operand 90 states and 186 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) [2021-10-08 18:18:22,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:22,167 INFO L93 Difference]: Finished difference Result 218 states and 419 transitions. [2021-10-08 18:18:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-08 18:18:22,168 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 [2021-10-08 18:18:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:22,169 INFO L225 Difference]: With dead ends: 218 [2021-10-08 18:18:22,169 INFO L226 Difference]: Without dead ends: 206 [2021-10-08 18:18:22,169 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 10823.7ms TimeCoverageRelationStatistics Valid=1107, Invalid=3723, Unknown=0, NotChecked=0, Total=4830 [2021-10-08 18:18:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-08 18:18:22,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 102. [2021-10-08 18:18:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.108910891089109) internal successors, (213), 101 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:22,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 213 transitions. [2021-10-08 18:18:22,172 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 213 transitions. Word has length 19 [2021-10-08 18:18:22,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:22,172 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 213 transitions. [2021-10-08 18:18:22,172 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) [2021-10-08 18:18:22,172 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 213 transitions. [2021-10-08 18:18:22,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:22,173 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:22,173 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:22,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:22,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:22,374 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:22,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1980226596, now seen corresponding path program 53 times [2021-10-08 18:18:22,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:22,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [512373323] [2021-10-08 18:18:22,375 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:18:22,375 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:22,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:22,377 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:22,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-08 18:18:23,013 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-08 18:18:23,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:23,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-08 18:18:23,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:23,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:24,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:24,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [512373323] [2021-10-08 18:18:24,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [512373323] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:24,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:24,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:18:24,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843636984] [2021-10-08 18:18:24,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:18:24,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:18:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:18:24,429 INFO L87 Difference]: Start difference. First operand 102 states and 213 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:28,137 INFO L93 Difference]: Finished difference Result 165 states and 314 transitions. [2021-10-08 18:18:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-08 18:18:28,138 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 19 [2021-10-08 18:18:28,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:28,139 INFO L225 Difference]: With dead ends: 165 [2021-10-08 18:18:28,139 INFO L226 Difference]: Without dead ends: 154 [2021-10-08 18:18:28,139 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 3224.4ms TimeCoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2021-10-08 18:18:28,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-08 18:18:28,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 106. [2021-10-08 18:18:28,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.123809523809524) internal successors, (223), 105 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:28,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 223 transitions. [2021-10-08 18:18:28,143 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 223 transitions. Word has length 19 [2021-10-08 18:18:28,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:28,143 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 223 transitions. [2021-10-08 18:18:28,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:28,144 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 223 transitions. [2021-10-08 18:18:28,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:28,144 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:28,144 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:28,156 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-10-08 18:18:28,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:28,345 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:28,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:28,346 INFO L82 PathProgramCache]: Analyzing trace with hash -1113640814, now seen corresponding path program 54 times [2021-10-08 18:18:28,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:28,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962477526] [2021-10-08 18:18:28,347 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:18:28,347 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:28,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:28,348 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:28,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-08 18:18:29,014 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-08 18:18:29,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:29,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:18:29,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:29,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:30,869 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:30,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:30,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962477526] [2021-10-08 18:18:30,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962477526] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:30,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:30,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:18:30,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329598031] [2021-10-08 18:18:30,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:18:30,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:18:30,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:18:30,874 INFO L87 Difference]: Start difference. First operand 106 states and 223 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:34,853 INFO L93 Difference]: Finished difference Result 198 states and 399 transitions. [2021-10-08 18:18:34,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:18:34,854 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 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 19 [2021-10-08 18:18:34,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:34,855 INFO L225 Difference]: With dead ends: 198 [2021-10-08 18:18:34,855 INFO L226 Difference]: Without dead ends: 176 [2021-10-08 18:18:34,855 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 4243.2ms TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2021-10-08 18:18:34,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-08 18:18:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 130. [2021-10-08 18:18:34,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.1627906976744184) internal successors, (279), 129 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:34,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 279 transitions. [2021-10-08 18:18:34,858 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 279 transitions. Word has length 19 [2021-10-08 18:18:34,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:34,858 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 279 transitions. [2021-10-08 18:18:34,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:34,859 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 279 transitions. [2021-10-08 18:18:34,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:34,859 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:34,859 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:34,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:35,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:35,060 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:35,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:35,061 INFO L82 PathProgramCache]: Analyzing trace with hash -852707546, now seen corresponding path program 55 times [2021-10-08 18:18:35,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:35,061 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1464218463] [2021-10-08 18:18:35,062 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:18:35,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:35,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:35,063 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:35,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-08 18:18:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:18:35,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-08 18:18:35,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:36,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:37,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:37,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1464218463] [2021-10-08 18:18:37,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1464218463] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:37,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:37,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 18:18:37,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451063230] [2021-10-08 18:18:37,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 18:18:37,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:37,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 18:18:37,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:18:37,947 INFO L87 Difference]: Start difference. First operand 130 states and 279 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) [2021-10-08 18:18:42,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:42,260 INFO L93 Difference]: Finished difference Result 201 states and 401 transitions. [2021-10-08 18:18:42,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-08 18:18:42,261 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 [2021-10-08 18:18:42,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:42,262 INFO L225 Difference]: With dead ends: 201 [2021-10-08 18:18:42,262 INFO L226 Difference]: Without dead ends: 188 [2021-10-08 18:18:42,262 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 4985.1ms TimeCoverageRelationStatistics Valid=454, Invalid=1708, Unknown=0, NotChecked=0, Total=2162 [2021-10-08 18:18:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-08 18:18:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2021-10-08 18:18:42,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.143884892086331) internal successors, (298), 139 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:42,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 298 transitions. [2021-10-08 18:18:42,265 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 298 transitions. Word has length 19 [2021-10-08 18:18:42,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:42,265 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 298 transitions. [2021-10-08 18:18:42,266 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) [2021-10-08 18:18:42,266 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 298 transitions. [2021-10-08 18:18:42,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:42,266 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:42,266 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:42,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:42,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:42,468 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:42,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1615839844, now seen corresponding path program 56 times [2021-10-08 18:18:42,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:42,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644166784] [2021-10-08 18:18:42,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:18:42,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:42,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:42,471 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:42,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-08 18:18:43,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:18:43,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:43,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-08 18:18:43,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:43,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:45,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:45,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644166784] [2021-10-08 18:18:45,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644166784] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:45,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:45,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-08 18:18:45,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140085058] [2021-10-08 18:18:45,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-08 18:18:45,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:45,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-08 18:18:45,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-10-08 18:18:45,687 INFO L87 Difference]: Start difference. First operand 140 states and 298 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) [2021-10-08 18:18:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:52,910 INFO L93 Difference]: Finished difference Result 218 states and 428 transitions. [2021-10-08 18:18:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-08 18:18:52,911 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 [2021-10-08 18:18:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:52,911 INFO L225 Difference]: With dead ends: 218 [2021-10-08 18:18:52,911 INFO L226 Difference]: Without dead ends: 202 [2021-10-08 18:18:52,912 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 7985.8ms TimeCoverageRelationStatistics Valid=425, Invalid=2545, Unknown=0, NotChecked=0, Total=2970 [2021-10-08 18:18:52,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-08 18:18:52,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 148. [2021-10-08 18:18:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.122448979591837) internal successors, (312), 147 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) [2021-10-08 18:18:52,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 312 transitions. [2021-10-08 18:18:52,917 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 312 transitions. Word has length 19 [2021-10-08 18:18:52,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:52,917 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 312 transitions. [2021-10-08 18:18:52,917 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) [2021-10-08 18:18:52,917 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 312 transitions. [2021-10-08 18:18:52,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:52,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:52,918 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:52,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:53,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:53,120 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:53,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:53,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1501477216, now seen corresponding path program 57 times [2021-10-08 18:18:53,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:53,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511034536] [2021-10-08 18:18:53,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:18:53,121 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:53,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:53,123 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:53,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-08 18:18:53,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:18:53,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:53,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:18:53,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:54,133 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:18:54,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:54,532 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-08 18:18:54,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:54,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511034536] [2021-10-08 18:18:54,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511034536] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:54,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:54,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:18:54,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713113139] [2021-10-08 18:18:54,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:18:54,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:54,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:18:54,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:18:54,533 INFO L87 Difference]: Start difference. First operand 148 states and 312 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:54,740 INFO L93 Difference]: Finished difference Result 153 states and 316 transitions. [2021-10-08 18:18:54,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:18:54,741 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 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 19 [2021-10-08 18:18:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:54,741 INFO L225 Difference]: With dead ends: 153 [2021-10-08 18:18:54,741 INFO L226 Difference]: Without dead ends: 128 [2021-10-08 18:18:54,742 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 300.2ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:18:54,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-08 18:18:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 108. [2021-10-08 18:18:54,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 107 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:54,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 221 transitions. [2021-10-08 18:18:54,744 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 221 transitions. Word has length 19 [2021-10-08 18:18:54,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:54,745 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 221 transitions. [2021-10-08 18:18:54,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 221 transitions. [2021-10-08 18:18:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:54,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:54,745 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:54,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-10-08 18:18:54,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:54,946 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:54,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:54,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1276185762, now seen corresponding path program 58 times [2021-10-08 18:18:54,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:54,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154470713] [2021-10-08 18:18:54,948 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:18:54,948 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:54,949 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:54,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-08 18:18:55,580 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:18:55,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:55,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-08 18:18:55,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:55,720 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:18:55,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:55,971 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-08 18:18:55,971 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:55,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154470713] [2021-10-08 18:18:55,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154470713] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:55,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:55,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-08 18:18:55,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079064416] [2021-10-08 18:18:55,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-08 18:18:55,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-08 18:18:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-08 18:18:55,973 INFO L87 Difference]: Start difference. First operand 108 states and 221 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:56,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:18:56,721 INFO L93 Difference]: Finished difference Result 138 states and 264 transitions. [2021-10-08 18:18:56,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-08 18:18:56,722 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:18:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:18:56,723 INFO L225 Difference]: With dead ends: 138 [2021-10-08 18:18:56,723 INFO L226 Difference]: Without dead ends: 138 [2021-10-08 18:18:56,723 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 766.2ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-08 18:18:56,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-08 18:18:56,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 102. [2021-10-08 18:18:56,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 101 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) [2021-10-08 18:18:56,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 208 transitions. [2021-10-08 18:18:56,725 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 208 transitions. Word has length 19 [2021-10-08 18:18:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:18:56,725 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 208 transitions. [2021-10-08 18:18:56,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:18:56,726 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 208 transitions. [2021-10-08 18:18:56,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:18:56,726 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:18:56,726 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:18:56,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-08 18:18:56,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:18:56,927 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:18:56,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:18:56,928 INFO L82 PathProgramCache]: Analyzing trace with hash -484424676, now seen corresponding path program 59 times [2021-10-08 18:18:56,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:18:56,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852588197] [2021-10-08 18:18:56,928 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:18:56,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:18:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:18:56,930 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:18:56,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-08 18:18:57,615 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-08 18:18:57,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:18:57,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:18:57,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:18:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:58,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:18:59,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:18:59,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:18:59,194 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852588197] [2021-10-08 18:18:59,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852588197] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:18:59,194 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:18:59,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:18:59,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882627396] [2021-10-08 18:18:59,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:18:59,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:18:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:18:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:18:59,195 INFO L87 Difference]: Start difference. First operand 102 states and 208 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:01,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:01,064 INFO L93 Difference]: Finished difference Result 155 states and 294 transitions. [2021-10-08 18:19:01,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-08 18:19:01,065 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:19:01,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:01,066 INFO L225 Difference]: With dead ends: 155 [2021-10-08 18:19:01,066 INFO L226 Difference]: Without dead ends: 140 [2021-10-08 18:19:01,066 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2549.6ms TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:19:01,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-08 18:19:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 104. [2021-10-08 18:19:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:01,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 213 transitions. [2021-10-08 18:19:01,068 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 213 transitions. Word has length 19 [2021-10-08 18:19:01,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:01,068 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 213 transitions. [2021-10-08 18:19:01,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:01,069 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 213 transitions. [2021-10-08 18:19:01,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-08 18:19:01,069 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:01,069 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:01,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-08 18:19:01,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:01,270 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:01,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:01,271 INFO L82 PathProgramCache]: Analyzing trace with hash 1116013178, now seen corresponding path program 60 times [2021-10-08 18:19:01,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:01,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1679743733] [2021-10-08 18:19:01,272 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:19:01,272 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:01,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:01,274 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:01,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-08 18:19:01,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-08 18:19:01,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:19:01,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-08 18:19:01,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:02,500 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:02,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:03,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:03,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1679743733] [2021-10-08 18:19:03,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1679743733] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:03,555 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:03,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-08 18:19:03,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425770545] [2021-10-08 18:19:03,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-08 18:19:03,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-08 18:19:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-10-08 18:19:03,556 INFO L87 Difference]: Start difference. First operand 104 states and 213 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:09,096 INFO L93 Difference]: Finished difference Result 202 states and 419 transitions. [2021-10-08 18:19:09,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-08 18:19:09,096 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-08 18:19:09,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:09,097 INFO L225 Difference]: With dead ends: 202 [2021-10-08 18:19:09,097 INFO L226 Difference]: Without dead ends: 184 [2021-10-08 18:19:09,097 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 5848.6ms TimeCoverageRelationStatistics Valid=373, Invalid=2077, Unknown=0, NotChecked=0, Total=2450 [2021-10-08 18:19:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-08 18:19:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 112. [2021-10-08 18:19:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.171171171171171) internal successors, (241), 111 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 241 transitions. [2021-10-08 18:19:09,100 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 241 transitions. Word has length 19 [2021-10-08 18:19:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:09,100 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 241 transitions. [2021-10-08 18:19:09,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 241 transitions. [2021-10-08 18:19:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:19:09,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:09,101 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:09,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-08 18:19:09,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:09,301 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:09,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:09,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1873200117, now seen corresponding path program 61 times [2021-10-08 18:19:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:09,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [876793157] [2021-10-08 18:19:09,303 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:19:09,303 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:09,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:09,305 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:09,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-08 18:19:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:19:10,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:19:10,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:10,199 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:10,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:10,612 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:10,612 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:10,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [876793157] [2021-10-08 18:19:10,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [876793157] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:10,612 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:10,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-08 18:19:10,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106239832] [2021-10-08 18:19:10,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-08 18:19:10,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:10,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-08 18:19:10,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-08 18:19:10,614 INFO L87 Difference]: Start difference. First operand 112 states and 241 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:13,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:13,633 INFO L93 Difference]: Finished difference Result 204 states and 409 transitions. [2021-10-08 18:19:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-08 18:19:13,633 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:19:13,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:13,634 INFO L225 Difference]: With dead ends: 204 [2021-10-08 18:19:13,634 INFO L226 Difference]: Without dead ends: 196 [2021-10-08 18:19:13,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2703.7ms TimeCoverageRelationStatistics Valid=360, Invalid=1620, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:19:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-08 18:19:13,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 122. [2021-10-08 18:19:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 121 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 260 transitions. [2021-10-08 18:19:13,637 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 260 transitions. Word has length 20 [2021-10-08 18:19:13,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:13,637 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 260 transitions. [2021-10-08 18:19:13,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:13,637 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 260 transitions. [2021-10-08 18:19:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:19:13,637 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:13,638 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:13,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-08 18:19:13,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:13,838 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:13,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:13,839 INFO L82 PathProgramCache]: Analyzing trace with hash -603460413, now seen corresponding path program 62 times [2021-10-08 18:19:13,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:13,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498703328] [2021-10-08 18:19:13,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:19:13,840 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:13,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:13,842 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:13,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-08 18:19:14,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:19:14,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:19:14,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-08 18:19:14,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:14,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:15,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:15,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498703328] [2021-10-08 18:19:15,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498703328] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:15,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:15,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-10-08 18:19:15,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859144831] [2021-10-08 18:19:15,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-08 18:19:15,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-08 18:19:15,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-10-08 18:19:15,126 INFO L87 Difference]: Start difference. First operand 122 states and 260 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:16,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:16,066 INFO L93 Difference]: Finished difference Result 172 states and 337 transitions. [2021-10-08 18:19:16,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-08 18:19:16,067 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-08 18:19:16,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:16,067 INFO L225 Difference]: With dead ends: 172 [2021-10-08 18:19:16,068 INFO L226 Difference]: Without dead ends: 172 [2021-10-08 18:19:16,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 901.9ms TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-10-08 18:19:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-08 18:19:16,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2021-10-08 18:19:16,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 121 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:16,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 260 transitions. [2021-10-08 18:19:16,070 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 260 transitions. Word has length 20 [2021-10-08 18:19:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:16,070 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 260 transitions. [2021-10-08 18:19:16,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:16,071 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 260 transitions. [2021-10-08 18:19:16,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-08 18:19:16,071 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:16,071 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:16,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Ended with exit code 0 [2021-10-08 18:19:16,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:16,272 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1417876675, now seen corresponding path program 63 times [2021-10-08 18:19:16,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:16,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288347309] [2021-10-08 18:19:16,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:19:16,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:16,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:16,275 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:16,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-08 18:19:17,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-08 18:19:17,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:19:17,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:19:17,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:17,285 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 18:19:17,285 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-08 18:19:17,539 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:17,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288347309] [2021-10-08 18:19:17,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288347309] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:17,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:17,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-08 18:19:17,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606519908] [2021-10-08 18:19:17,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-08 18:19:17,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:17,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-08 18:19:17,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:19:17,541 INFO L87 Difference]: Start difference. First operand 122 states and 260 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:17,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:17,672 INFO L93 Difference]: Finished difference Result 129 states and 267 transitions. [2021-10-08 18:19:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:19:17,672 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 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 20 [2021-10-08 18:19:17,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:17,672 INFO L225 Difference]: With dead ends: 129 [2021-10-08 18:19:17,672 INFO L226 Difference]: Without dead ends: 70 [2021-10-08 18:19:17,673 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 222.3ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-08 18:19:17,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-08 18:19:17,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2021-10-08 18:19:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:17,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-10-08 18:19:17,674 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 20 [2021-10-08 18:19:17,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:17,674 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-10-08 18:19:17,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:17,674 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-10-08 18:19:17,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-08 18:19:17,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:17,675 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:17,686 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2021-10-08 18:19:17,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:17,875 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:17,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:17,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1511190324, now seen corresponding path program 64 times [2021-10-08 18:19:17,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:17,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093092660] [2021-10-08 18:19:17,877 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-08 18:19:17,877 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:17,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:17,879 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:17,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-08 18:19:18,585 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-08 18:19:18,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:19:18,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-08 18:19:18,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:19,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:19,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:21,484 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:21,484 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:21,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093092660] [2021-10-08 18:19:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093092660] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:21,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:21,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-08 18:19:21,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225341732] [2021-10-08 18:19:21,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-08 18:19:21,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:21,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-08 18:19:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2021-10-08 18:19:21,486 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:29,044 INFO L93 Difference]: Finished difference Result 124 states and 223 transitions. [2021-10-08 18:19:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-08 18:19:29,045 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-08 18:19:29,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:29,045 INFO L225 Difference]: With dead ends: 124 [2021-10-08 18:19:29,045 INFO L226 Difference]: Without dead ends: 88 [2021-10-08 18:19:29,046 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 8411.1ms TimeCoverageRelationStatistics Valid=813, Invalid=2727, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 18:19:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-08 18:19:29,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2021-10-08 18:19:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.8524590163934427) internal successors, (113), 61 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) [2021-10-08 18:19:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 113 transitions. [2021-10-08 18:19:29,047 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 113 transitions. Word has length 21 [2021-10-08 18:19:29,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:29,047 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 113 transitions. [2021-10-08 18:19:29,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:29,048 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 113 transitions. [2021-10-08 18:19:29,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:19:29,048 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:29,048 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:29,060 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2021-10-08 18:19:29,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:29,249 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:29,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1500009820, now seen corresponding path program 65 times [2021-10-08 18:19:29,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:29,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [111978874] [2021-10-08 18:19:29,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-08 18:19:29,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:29,253 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:29,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-08 18:19:30,018 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-08 18:19:30,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:19:30,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:19:30,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:30,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:30,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:32,827 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:32,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:32,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [111978874] [2021-10-08 18:19:32,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [111978874] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:32,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:32,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-08 18:19:32,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250932853] [2021-10-08 18:19:32,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 18:19:32,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:32,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 18:19:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2021-10-08 18:19:32,829 INFO L87 Difference]: Start difference. First operand 62 states and 113 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:44,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:44,702 INFO L93 Difference]: Finished difference Result 197 states and 345 transitions. [2021-10-08 18:19:44,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-08 18:19:44,703 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:19:44,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:44,703 INFO L225 Difference]: With dead ends: 197 [2021-10-08 18:19:44,703 INFO L226 Difference]: Without dead ends: 188 [2021-10-08 18:19:44,704 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 12264.2ms TimeCoverageRelationStatistics Valid=804, Invalid=4452, Unknown=0, NotChecked=0, Total=5256 [2021-10-08 18:19:44,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-08 18:19:44,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 66. [2021-10-08 18:19:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 65 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:44,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 121 transitions. [2021-10-08 18:19:44,706 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 121 transitions. Word has length 23 [2021-10-08 18:19:44,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:44,706 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 121 transitions. [2021-10-08 18:19:44,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:44,706 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2021-10-08 18:19:44,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-08 18:19:44,707 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:44,707 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:44,719 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-08 18:19:44,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:44,908 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:44,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:44,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1501927244, now seen corresponding path program 66 times [2021-10-08 18:19:44,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:44,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [993666738] [2021-10-08 18:19:44,909 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-08 18:19:44,910 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:44,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:44,911 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:44,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-08 18:19:45,719 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-08 18:19:45,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:19:45,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-08 18:19:45,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:46,433 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:46,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:48,391 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:48,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [993666738] [2021-10-08 18:19:48,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [993666738] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:48,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:48,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-08 18:19:48,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991271796] [2021-10-08 18:19:48,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-08 18:19:48,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:48,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-08 18:19:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-10-08 18:19:48,392 INFO L87 Difference]: Start difference. First operand 66 states and 121 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:56,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:19:56,335 INFO L93 Difference]: Finished difference Result 150 states and 274 transitions. [2021-10-08 18:19:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-08 18:19:56,336 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-08 18:19:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:19:56,337 INFO L225 Difference]: With dead ends: 150 [2021-10-08 18:19:56,337 INFO L226 Difference]: Without dead ends: 134 [2021-10-08 18:19:56,337 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 8391.2ms TimeCoverageRelationStatistics Valid=744, Invalid=2796, Unknown=0, NotChecked=0, Total=3540 [2021-10-08 18:19:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-08 18:19:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 80. [2021-10-08 18:19:56,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.7974683544303798) internal successors, (142), 79 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:56,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 142 transitions. [2021-10-08 18:19:56,339 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 142 transitions. Word has length 23 [2021-10-08 18:19:56,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:19:56,339 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 142 transitions. [2021-10-08 18:19:56,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:19:56,339 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 142 transitions. [2021-10-08 18:19:56,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:19:56,340 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:19:56,340 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:19:56,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2021-10-08 18:19:56,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:19:56,541 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:19:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:19:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash -406688061, now seen corresponding path program 67 times [2021-10-08 18:19:56,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:19:56,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709864515] [2021-10-08 18:19:56,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-08 18:19:56,544 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:19:56,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:19:56,545 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:19:56,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-08 18:19:57,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-08 18:19:57,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:19:57,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:19:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:57,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:19:58,547 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:19:58,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:19:58,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709864515] [2021-10-08 18:19:58,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709864515] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:19:58,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:19:58,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-10-08 18:19:58,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849448121] [2021-10-08 18:19:58,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-08 18:19:58,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:19:58,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-08 18:19:58,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-10-08 18:19:58,551 INFO L87 Difference]: Start difference. First operand 80 states and 142 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:00,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:00,814 INFO L93 Difference]: Finished difference Result 142 states and 240 transitions. [2021-10-08 18:20:00,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-08 18:20:00,814 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-08 18:20:00,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:00,815 INFO L225 Difference]: With dead ends: 142 [2021-10-08 18:20:00,815 INFO L226 Difference]: Without dead ends: 106 [2021-10-08 18:20:00,815 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2367.2ms TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2021-10-08 18:20:00,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-08 18:20:00,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2021-10-08 18:20:00,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2021-10-08 18:20:00,817 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 24 [2021-10-08 18:20:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:00,817 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2021-10-08 18:20:00,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:00,817 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2021-10-08 18:20:00,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-08 18:20:00,817 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:00,817 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:20:00,832 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:01,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:01,018 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:20:01,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:01,019 INFO L82 PathProgramCache]: Analyzing trace with hash -562802557, now seen corresponding path program 68 times [2021-10-08 18:20:01,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:01,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925569138] [2021-10-08 18:20:01,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-08 18:20:01,021 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:01,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:01,022 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:01,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-08 18:20:01,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-08 18:20:01,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:20:01,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-08 18:20:01,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:01,960 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:01,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-08 18:20:02,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:02,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925569138] [2021-10-08 18:20:02,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925569138] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:20:02,636 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:20:02,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 22 [2021-10-08 18:20:02,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320606290] [2021-10-08 18:20:02,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-08 18:20:02,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-08 18:20:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-10-08 18:20:02,637 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:04,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:04,368 INFO L93 Difference]: Finished difference Result 96 states and 169 transitions. [2021-10-08 18:20:04,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-08 18:20:04,369 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 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 24 [2021-10-08 18:20:04,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:04,370 INFO L225 Difference]: With dead ends: 96 [2021-10-08 18:20:04,370 INFO L226 Difference]: Without dead ends: 82 [2021-10-08 18:20:04,370 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1826.5ms TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-10-08 18:20:04,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-08 18:20:04,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2021-10-08 18:20:04,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:04,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2021-10-08 18:20:04,372 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 24 [2021-10-08 18:20:04,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:04,372 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2021-10-08 18:20:04,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:04,373 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2021-10-08 18:20:04,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-08 18:20:04,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-08 18:20:04,373 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-08 18:20:04,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Ended with exit code 0 [2021-10-08 18:20:04,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:04,578 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-08 18:20:04,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-08 18:20:04,579 INFO L82 PathProgramCache]: Analyzing trace with hash -92005388, now seen corresponding path program 69 times [2021-10-08 18:20:04,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-08 18:20:04,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [615588026] [2021-10-08 18:20:04,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-08 18:20:04,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-08 18:20:04,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-08 18:20:04,582 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-08 18:20:04,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-08 18:20:05,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-08 18:20:05,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-08 18:20:05,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-08 18:20:05,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-08 18:20:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 18:20:05,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-08 18:20:06,324 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-08 18:20:06,325 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-08 18:20:06,325 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [615588026] [2021-10-08 18:20:06,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [615588026] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-08 18:20:06,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-08 18:20:06,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-08 18:20:06,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101253401] [2021-10-08 18:20:06,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-08 18:20:06,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-08 18:20:06,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-08 18:20:06,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:20:06,327 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:06,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-08 18:20:06,432 INFO L93 Difference]: Finished difference Result 69 states and 127 transitions. [2021-10-08 18:20:06,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-08 18:20:06,432 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 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 25 [2021-10-08 18:20:06,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-08 18:20:06,432 INFO L225 Difference]: With dead ends: 69 [2021-10-08 18:20:06,433 INFO L226 Difference]: Without dead ends: 0 [2021-10-08 18:20:06,433 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 286.1ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-08 18:20:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-08 18:20:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-08 18:20:06,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:06,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-08 18:20:06,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-08 18:20:06,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-08 18:20:06,434 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-08 18:20:06,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-08 18:20:06,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-08 18:20:06,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-08 18:20:06,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-08 18:20:06,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-08 18:20:06,437 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-08 18:20:06,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-08 18:20:06,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-08 18:20:06,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-08 18:20:06,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-08 18:20:06,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-08 18:20:06,438 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:20:06,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-08 18:20:06,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-08 18:20:06,439 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-08 18:20:06,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-08 18:20:06,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-08 18:20:06,648 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-08 18:20:06,649 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-08 18:20:06,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.10 06:20:06 BasicIcfg [2021-10-08 18:20:06,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-08 18:20:06,654 INFO L168 Benchmark]: Toolchain (without parser) took 364135.70 ms. Allocated memory was 164.6 MB in the beginning and 257.9 MB in the end (delta: 93.3 MB). Free memory was 140.6 MB in the beginning and 177.2 MB in the end (delta: -36.6 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-10-08 18:20:06,654 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 164.6 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-08 18:20:06,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.00 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 129.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-08 18:20:06,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.26 ms. Allocated memory is still 164.6 MB. Free memory was 129.3 MB in the beginning and 127.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:20:06,656 INFO L168 Benchmark]: Boogie Preprocessor took 32.16 ms. Allocated memory is still 164.6 MB. Free memory was 127.9 MB in the beginning and 126.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-08 18:20:06,656 INFO L168 Benchmark]: RCFGBuilder took 592.16 ms. Allocated memory is still 164.6 MB. Free memory was 126.6 MB in the beginning and 114.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-08 18:20:06,656 INFO L168 Benchmark]: TraceAbstraction took 363176.25 ms. Allocated memory was 164.6 MB in the beginning and 257.9 MB in the end (delta: 93.3 MB). Free memory was 114.0 MB in the beginning and 177.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. [2021-10-08 18:20:06,658 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 164.6 MB. Free memory is still 135.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.00 ms. Allocated memory is still 164.6 MB. Free memory was 140.2 MB in the beginning and 129.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 45.26 ms. Allocated memory is still 164.6 MB. Free memory was 129.3 MB in the beginning and 127.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.16 ms. Allocated memory is still 164.6 MB. Free memory was 127.9 MB in the beginning and 126.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 592.16 ms. Allocated memory is still 164.6 MB. Free memory was 126.6 MB in the beginning and 114.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 363176.25 ms. Allocated memory was 164.6 MB in the beginning and 257.9 MB in the end (delta: 93.3 MB). Free memory was 114.0 MB in the beginning and 177.2 MB in the end (delta: -63.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7551.3ms, 91 PlacesBefore, 32 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 90 TotalNumberOfCompositions, 783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 783, positive: 783, positive conditional: 0, positive unconditional: 783, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 454, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 454, positive: 451, positive conditional: 0, positive unconditional: 451, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 23, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 783, positive: 329, positive conditional: 0, positive unconditional: 329, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 454, unknown conditional: 0, unknown unconditional: 454] , 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 - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 62]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 362896.5ms, OverallIterations: 86, TraceHistogramMax: 6, EmptinessCheckTime: 91.6ms, AutomataDifference: 224758.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7647.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2818 SDtfs, 7116 SDslu, 17604 SDs, 0 SdLazy, 20745 SolverSat, 4224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47271.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3993 GetRequests, 1466 SyntacticMatches, 45 SemanticMatches, 2482 ConstructedPredicates, 0 IntricatePredicates, 53 DeprecatedPredicates, 24991 ImplicationChecksByTransitivity, 217237.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=526occurred in iteration=55, InterpolantAutomatonStates: 1906, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 700.1ms AutomataMinimizationTime, 86 MinimizatonAttempts, 7110 StatesRemovedByMinimization, 80 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 503.2ms SsaConstructionTime, 4817.8ms SatisfiabilityAnalysisTime, 77694.0ms InterpolantComputationTime, 1396 NumberOfCodeBlocks, 1383 NumberOfCodeBlocksAsserted, 162 NumberOfCheckSat, 2620 ConstructedInterpolants, 195 QuantifiedInterpolants, 24389 SizeOfPredicates, 302 NumberOfNonLiveVariables, 6125 ConjunctsInSsa, 1081 ConjunctsInUnsatCore, 172 InterpolantComputations, 29 PerfectInterpolantSequences, 218/1268 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 - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-08 18:20:06,717 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...